commit 31de8b0d844b1480d2176eba92bc2c281137933d
Author: vuongps38770 <166083538+vuongps38770@users.noreply.github.com>
Date:   Thu Dec 25 18:06:29 2025 +0700

    check point

diff --git a/.env b/.env
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index 0000000..e69de29
diff --git a/API.md b/API.md
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index 0000000..893f6fa
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+++ b/API.md
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+# Game Generator API
+
+## Game Types
+
+| type_id | game_type | Mô tả |
+|---------|-----------|-------|
+| 1 | quiz | Multiple choice questions |
+| 2 | sequence_sentence | Sắp xếp câu |
+| 3 | sequence_word | Sắp xếp từ |
+
+---
+
+## 1. POST /generate
+
+Analyze + Generate nhiều games.
+
+**Request:**
+```json
+{
+    "text": "Mặt Trời là ngôi sao...",
+    "enabled_game_ids": [1, 2],      // optional, default: all
+    "max_items": 3,                   // optional, default: 3
+    "min_score": 30,                  // optional, default: 30
+    "run_validator": true             // optional, default: true
+}
+```
+
+**Response:**
+```json
+{
+    "success": true,
+    "games": [1, 2],
+    "game_scores": [
+        {"type_id": 1, "score": 85, "reason": "..."}
+    ],
+    "results": {
+        "1": [{"question": "...", "answers": "...", ...}],
+        "2": [{"sentence": "...", ...}]
+    },
+    "token_usage": {"prompt_tokens": 100, "completion_tokens": 50},
+    "llm": "gemini/gemini-2.0-flash-lite"
+}
+```
+
+---
+
+## 2. POST /generate/single
+
+1 API call = Analyze + Generate 1 game tốt nhất.
+
+**Request:**
+```json
+{
+    "text": "Python là ngôn ngữ...",
+    "enabled_game_ids": [1, 2, 3],   // optional
+    "max_items": 3                    // optional
+}
+```
+
+**Response:**
+```json
+{
+    "success": true,
+    "type_id": 1,
+    "reason": "Text has clear facts",
+    "items": [{"question": "...", ...}],
+    "token_usage": {...},
+    "llm": "..."
+}
+```
+
+---
+
+## 3. POST /generate/{type_id}
+
+Generate trực tiếp 1 game (không analyze).
+
+### Quiz (type_id = 1)
+
+**Input format:**
+```
+Question: Thủ đô Việt Nam?
+A. Hà Nội
+B. TP HCM
+C. Đà Nẵng
+D. Huế
+Correct: A
+```
+
+**Request:**
+```json
+{
+    "text": "Question: ...\\nA. ...\\nB. ...\\nCorrect: A",
+    "max_items": 5
+}
+```
+
+### Sequence Sentence (type_id = 2)
+
+**Input format:**
+```
+sentence1; sentence2; sentence3
+```
+
+**Request:**
+```json
+{
+    "text": "Mặt trời mọc; Chim hót; Người thức dậy",
+    "max_items": 10
+}
+```
+
+### Sequence Word (type_id = 3)
+
+**Input format:**
+```
+word1; word2; word3
+```
+
+**Request:**
+```json
+{
+    "text": "Apple; Banana; Orange; Grape",
+    "max_items": 10
+}
+```
+
+**Response (all direct):**
+```json
+{
+    "success": true,
+    "type_id": 1,
+    "items": [...],
+    "token_usage": {...},
+    "llm": "..."
+}
+```
+
+---
+
+## 4. GET /games
+
+**Response:**
+```json
+{
+    "total": 3,
+    "active_count": 3,
+    "games": [
+        {"type_id": 1, "game_type": "quiz", "display_name": "Quiz", "active": true},
+        {"type_id": 2, "game_type": "sequence_sentence", ...},
+        {"type_id": 3, "game_type": "sequence_word", ...}
+    ]
+}
+```
+
+---
+
+## 5. POST /llm
+
+**Request:**
+```json
+{
+    "provider": "gemini",
+    "model_name": "gemini-2.0-flash-lite",
+    "temperature": 0.1
+}
+```
+
+Ollama:
+```json
+{
+    "provider": "ollama",
+    "model_name": "qwen2.5:14b",
+    "base_url": "http://localhost:11434"
+}
+```
+
+---
+
+## 6. Other Endpoints
+
+- `GET /llm` - Xem LLM config hiện tại
+- `POST /reload` - Reload game definitions
+- `GET /health` - Health check
+- `POST /games/{game_type}/activate` - Bật game
+- `POST /games/{game_type}/deactivate` - Tắt game
diff --git a/Dockerfile b/Dockerfile
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--- /dev/null
+++ b/Dockerfile
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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy source code
+COPY . .
+
+# Expose port
+EXPOSE 2009
+
+# Start command
+CMD ["uvicorn", "api:app", "--host", "0.0.0.0", "--port", "2009"]
diff --git a/README.md b/README.md
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+++ b/README.md
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+# GAME GENERATOR
+
+## 🚀 TỐI ƯU API CALLS
+
+| Trước | Sau |
+|-------|-----|
+| Analyzer: 1 call | Analyzer: 1 call |
+| Generate: N calls (1 per game) | Generate: **1 call** (tất cả games) |
+| Validator: N calls | Validator: **0 call** (Python) |
+| **Tổng: N+1 calls** | **Tổng: 1-2 calls** |
+
+---
+
+## 📁 Cấu trúc
+
+```
+gen_using_graph/
+├── api.py                # FastAPI server
+├── requirements.txt
+│
+└── src/
+    ├── core.py           # Core engine (tối ưu API calls)
+    ├── game_registry.py  # Auto-load games
+    ├── validator.py      # Hallucination check (không dùng API)
+    │
+    └── games/            # Game definitions
+        ├── _template.py  # Template
+        ├── quiz.py       # Quiz game
+        └── fill_blank.py # Fill-blank game
+```
+
+---
+
+## 🔌 API ENDPOINTS
+
+### Generate games
+```bash
+POST /generate
+{
+    "text": "Văn bản...",
+    "enabled_games": ["quiz", "fill_blank"],
+    "run_analyzer": true,
+    "run_validator": true,
+    "max_items": 3
+}
+
+# Response includes:
+# "api_calls": 2  <-- Số lần gọi LLM
+```
+
+### Xem games
+```bash
+GET /games
+```
+
+### Bật/Tắt game
+```bash
+POST /games/quiz/activate
+POST /games/quiz/deactivate
+```
+
+### Reload
+```bash
+POST /reload
+```
+
+---
+
+## 🎮 THÊM GAME MỚI
+
+1. Copy `src/games/_template.py` → `src/games/new_game.py`
+2. Sửa nội dung
+3. Gọi `POST /reload`
+
+---
+
+## ✅ BẬT/TẮT GAME
+
+```python
+# Trong file game
+GAME_CONFIG = {
+    "active": True,   # Bật
+    "active": False,  # Tắt
+}
+```
+
+Hoặc qua API:
+```bash
+curl -X POST http://localhost:8000/games/quiz/deactivate
+```
+
+---
+
+## 🚀 Chạy
+
+```bash
+pip install -r requirements.txt
+export GOOGLE_API_KEY=your_key
+uvicorn api:app --port 8000
+```
diff --git a/api.py b/api.py
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index 0000000..e4fddca
--- /dev/null
+++ b/api.py
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+import os
+from typing import List, Dict, Any, Optional
+from fastapi import FastAPI, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+from pydantic import BaseModel, Field
+from pathlib import Path
+import re
+
+from src import (
+    GameCore, get_registry, reload_games, 
+    get_active_game_types, get_active_type_ids,
+    get_game_by_id, id_to_type, type_to_id,
+    ModelConfig
+)
+
+
+# ============== APP ==============
+app = FastAPI(
+    title="Game Generator API",
+    description="API tạo game giáo dục từ văn bản",
+    version="2.0.0"
+)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+# ============== REQUEST/RESPONSE MODELS ==============
+
+class LLMConfigRequest(BaseModel):
+    provider: str = Field(default="gemini", description="ollama, gemini, openai")
+    model_name: str = Field(default="gemini-2.0-flash-lite")
+    api_key: Optional[str] = Field(default=None, description="API key (None = lấy từ env)")
+    temperature: float = Field(default=0.1)
+    base_url: Optional[str] = Field(default=None, description="Base URL cho Ollama")
+
+
+class GenerateRequest(BaseModel):
+    text: str = Field(description="Input text", min_length=10)
+    enabled_game_ids: Optional[List[int]] = Field(default=None, description="List of type_ids (1=quiz, 2=sequence_sentence, 3=sequence_word)")
+    run_analyzer: bool = Field(default=True)
+    run_validator: bool = Field(default=True)
+    max_items: Optional[int] = Field(default=3)
+    min_score: int = Field(default=50, description="Minimum score (0-100) for analyzer to include a game")
+    debug: bool = Field(default=False, description="Print prompts to server log")
+    
+    # LLM config (optional - override global)
+    llm_config: Optional[LLMConfigRequest] = Field(default=None, description="Override LLM config")
+
+
+class TokenUsageResponse(BaseModel):
+    prompt_tokens: int = 0
+    completion_tokens: int = 0
+    total_tokens: int = 0
+
+
+class GameScoreInfo(BaseModel):
+    type_id: int
+    score: int
+    reason: str = ""
+
+
+class GameResultData(BaseModel):
+    """Structure thống nhất cho mỗi game result"""
+    items: List[Dict[str, Any]] = []
+    metadata: Optional[Dict[str, Any]] = None
+
+
+class CommonMetadataResponse(BaseModel):
+    """Metadata chung cho toàn bộ kết quả generate"""
+    title: str = ""
+    description: str = ""
+    grade: int = 0
+    difficulty: int = 0
+
+
+class GenerateResponse(BaseModel):
+    success: bool
+    games: List[int]  # type_ids
+    game_scores: List[GameScoreInfo] = []
+    metadata: Optional[CommonMetadataResponse] = None  # Metadata chung từ analyzer
+    results: Dict[int, GameResultData]  # keyed by type_id, value is {items, metadata}
+    llm: Optional[str] = None
+    api_calls: Optional[int] = None
+    token_usage: Optional[TokenUsageResponse] = None
+    errors: List[str] = []
+
+
+class GameInfo(BaseModel):
+    type_id: int
+    game_type: str  # Keep for reference
+    display_name: str
+    description: str
+    active: bool
+    max_items: int
+
+
+class GamesListResponse(BaseModel):
+    total: int
+    active_count: int
+    games: List[GameInfo]
+
+
+class ActionResponse(BaseModel):
+    success: bool
+    message: str
+    game_type: Optional[str] = None
+    active: Optional[bool] = None
+
+
+class LLMConfigResponse(BaseModel):
+    provider: str
+    model_name: str
+    temperature: float
+    base_url: Optional[str] = None
+
+
+# ============== GLOBAL ==============
+_core: Optional[GameCore] = None
+_current_config: Optional[ModelConfig] = None
+
+
+def get_core(config_override: Optional[LLMConfigRequest] = None) -> GameCore:
+    """Get or create GameCore with optional config override"""
+    global _core, _current_config
+    
+    if config_override:
+        # Create new core with override config
+        config = ModelConfig(
+            provider=config_override.provider,
+            model_name=config_override.model_name,
+            api_key=config_override.api_key,
+            temperature=config_override.temperature,
+            base_url=config_override.base_url
+        )
+        return GameCore(llm_config=config)
+    
+    if _core is None:
+        # Default: tự detect từ env
+        _core = GameCore()
+        _current_config = _core.llm_config
+    
+    return _core
+
+
+# ============== ENDPOINTS ==============
+
+@app.post("/generate", response_model=GenerateResponse)
+async def generate_games(request: GenerateRequest):
+    """Generate games from text with scoring"""
+    try:
+        core = get_core(request.llm_config)
+        
+        # Convert type_ids to game_types
+        if request.enabled_game_ids:
+            games = [id_to_type(tid) for tid in request.enabled_game_ids if id_to_type(tid)]
+        else:
+            games = get_active_game_types()
+        
+        result = core.run_multi(
+            text=request.text,
+            enabled_games=games,
+            max_items=request.max_items or 3,
+            min_score=request.min_score,
+            validate=request.run_validator,
+            debug=request.debug
+        )
+        
+        # Convert game_types to type_ids in response
+        game_ids = [type_to_id(g) for g in result.get("games", [])]
+        
+        # Convert game_scores
+        game_scores = []
+        for s in result.get("game_scores", []):
+            game_scores.append(GameScoreInfo(
+                type_id=type_to_id(s.get("type", "")),
+                score=s.get("score", 0),
+                reason=s.get("reason", "")
+            ))
+        
+        # Convert results keys to type_ids
+        results_by_id = {}
+        for game_type, items in result.get("results", {}).items():
+            tid = type_to_id(game_type)
+            if tid > 0:
+                results_by_id[tid] = items
+        
+        # Get common metadata from analyzer
+        core_meta = result.get("metadata", {})
+        common_metadata = CommonMetadataResponse(
+            title=core_meta.get("title", ""),
+            description=core_meta.get("description", ""),
+            grade=core_meta.get("grade", 0),
+            difficulty=core_meta.get("difficulty", 0)
+        ) if core_meta else None
+        
+        return GenerateResponse(
+            success=result.get("success", False),
+            games=game_ids,
+            game_scores=game_scores,
+            metadata=common_metadata,
+            results=results_by_id,
+            llm=result.get("llm"),
+            token_usage=result.get("token_usage"),
+            errors=result.get("errors", [])
+        )
+    
+    except Exception as e:
+        return GenerateResponse(
+            success=False,
+            games=[],
+            game_scores=[],
+            results={},
+            errors=[str(e)]
+        )
+
+
+# ============== SINGLE BEST (1 PROMPT) ==============
+
+class SingleGenerateRequest(BaseModel):
+    text: str = Field(description="Input text", min_length=10)
+    enabled_game_ids: Optional[List[int]] = Field(default=None, description="Limit type_ids to choose from")
+    max_items: int = Field(default=3, description="Max items to generate")
+    run_validator: bool = Field(default=True)
+    debug: bool = Field(default=False)
+    llm_config: Optional[LLMConfigRequest] = Field(default=None)
+
+
+class SingleGenerateResponse(BaseModel):
+    success: bool
+    type_id: Optional[int] = None
+    reason: Optional[str] = None
+    items: List[Dict[str, Any]] = []
+    token_usage: Optional[TokenUsageResponse] = None
+    llm: Optional[str] = None
+    errors: List[str] = []
+
+
+@app.post("/generate/single", response_model=SingleGenerateResponse)
+async def generate_single_game(request: SingleGenerateRequest):
+    """
+    Generate 1 game phù hợp nhất trong 1 prompt duy nhất.
+    
+    - Analyze text để chọn game type tốt nhất
+    - Generate items cho game đó
+    - Tất cả trong 1 API call
+    """
+    try:
+        core = get_core(request.llm_config)
+        
+        # Convert type_ids to game_types
+        if request.enabled_game_ids:
+            games = [id_to_type(tid) for tid in request.enabled_game_ids if id_to_type(tid)]
+        else:
+            games = None
+        
+        result = core.run_single(
+            text=request.text,
+            enabled_games=games,
+            max_items=request.max_items,
+            debug=request.debug,
+            validate=request.run_validator
+        )
+        
+        # Convert game_type to type_id
+        game_type = result.get("game_type")
+        tid = type_to_id(game_type) if game_type else None
+        
+        return SingleGenerateResponse(
+            success=result.get("success", False),
+            type_id=tid,
+            reason=result.get("reason"),
+            items=result.get("items", []),
+            token_usage=result.get("token_usage"),
+            llm=result.get("llm"),
+            errors=result.get("errors", [])
+        )
+    
+    except Exception as e:
+        return SingleGenerateResponse(
+            success=False,
+            errors=[str(e)]
+        )
+
+
+# ============== DIRECT GENERATE (1 game cụ thể, không analyze) ==============
+
+class DirectGenerateRequest(BaseModel):
+    text: str = Field(description="Input text", min_length=10)
+    max_items: int = Field(default=3, description="Max items to generate")
+    run_validator: bool = Field(default=True)
+    debug: bool = Field(default=False)
+    llm_config: Optional[LLMConfigRequest] = Field(default=None)
+
+
+class DirectGenerateResponse(BaseModel):
+    """Response thống nhất, giống GenerateResponse nhưng cho 1 game"""
+    success: bool
+    games: List[int] = []  # Single type_id in list
+    results: Dict[int, GameResultData] = {}  # Same structure as GenerateResponse
+    is_format_error: bool = False
+    format_error: Optional[str] = None
+    token_usage: Optional[TokenUsageResponse] = None
+    llm: Optional[str] = None
+    errors: List[str] = []
+
+
+@app.post("/generate/{type_id}", response_model=DirectGenerateResponse)
+async def generate_direct(type_id: int, request: DirectGenerateRequest):
+    """
+    Generate 1 game cụ thể, KHÔNG analyze.
+    Response format giống với /generate nhưng chỉ có 1 game.
+    """
+    try:
+        # Get game by type_id
+        game_type = id_to_type(type_id)
+        if not game_type:
+            return DirectGenerateResponse(
+                success=False,
+                games=[type_id],
+                errors=[f"Game with type_id={type_id} not found"]
+            )
+        
+        core = get_core(request.llm_config)
+        
+        result = core.generate(
+            game_type=game_type,
+            text=request.text,
+            max_items=request.max_items,
+            validate=request.run_validator,
+            debug=request.debug
+        )
+        
+        format_error = result.get("format_error")
+        data = result.get("data") or {}
+        
+        # Build results với structure thống nhất
+        game_result = GameResultData(
+            items=data.get("items", []) if isinstance(data, dict) else [],
+            metadata=data.get("metadata") if isinstance(data, dict) else None
+        )
+        
+        return DirectGenerateResponse(
+            success=result.get("success", False),
+            games=[type_id],
+            results={type_id: game_result},
+            is_format_error=format_error is not None,
+            format_error=format_error,
+            token_usage=result.get("token_usage"),
+            llm=result.get("llm"),
+            errors=result.get("errors", [])
+        )
+    
+    except Exception as e:
+        return DirectGenerateResponse(
+            success=False,
+            games=[type_id],
+            errors=[str(e)]
+        )
+
+
+@app.get("/games", response_model=GamesListResponse)
+async def list_games():
+    """Lấy danh sách games"""
+    registry = get_registry()
+    all_games = registry.get_all_games_including_inactive()
+    
+    games_list = []
+    active_count = 0
+    
+    for game_type, game in all_games.items():
+        games_list.append(GameInfo(
+            type_id=game.type_id,
+            game_type=game.game_type,
+            display_name=game.display_name,
+            description=game.description,
+            active=game.active,
+            max_items=game.max_items,
+        ))
+        if game.active:
+            active_count += 1
+    
+    # Sort by type_id
+    games_list.sort(key=lambda g: g.type_id)
+    
+    return GamesListResponse(
+        total=len(games_list),
+        active_count=active_count,
+        games=games_list
+    )
+
+
+@app.post("/games/{game_type}/activate", response_model=ActionResponse)
+async def activate_game(game_type: str):
+    """Bật game"""
+    return _set_game_active(game_type, True)
+
+
+@app.post("/games/{game_type}/deactivate", response_model=ActionResponse)
+async def deactivate_game(game_type: str):
+    """Tắt game"""
+    return _set_game_active(game_type, False)
+
+
+def _set_game_active(game_type: str, active: bool) -> ActionResponse:
+    games_dir = Path(__file__).parent / "src" / "games"
+    game_file = games_dir / f"{game_type}.py"
+    
+    if not game_file.exists():
+        raise HTTPException(404, f"Game '{game_type}' not found")
+    
+    content = game_file.read_text(encoding="utf-8")
+    pattern = r'("active"\s*:\s*)(True|False)'
+    new_value = "True" if active else "False"
+    
+    if not re.search(pattern, content):
+        raise HTTPException(400, f"Cannot find 'active' field in {game_type}.py")
+    
+    new_content = re.sub(pattern, f'\\1{new_value}', content)
+    game_file.write_text(new_content, encoding="utf-8")
+    
+    reload_games()
+    
+    action = "activated" if active else "deactivated"
+    return ActionResponse(
+        success=True,
+        message=f"Game '{game_type}' has been {action}",
+        game_type=game_type,
+        active=active
+    )
+
+
+@app.get("/llm", response_model=LLMConfigResponse)
+async def get_llm_config():
+    """Xem LLM config hiện tại"""
+    global _current_config
+    
+    if _current_config is None:
+        core = get_core()
+        _current_config = core.llm_config
+    
+    return LLMConfigResponse(
+        provider=_current_config.provider,
+        model_name=_current_config.model_name,
+        temperature=_current_config.temperature,
+        base_url=_current_config.base_url
+    )
+
+
+@app.post("/llm", response_model=ActionResponse)
+async def set_llm_config(config: LLMConfigRequest):
+    """Đổi LLM config global"""
+    global _core, _current_config
+    
+    new_config = ModelConfig(
+        provider=config.provider,
+        model_name=config.model_name,
+        api_key=config.api_key,
+        temperature=config.temperature,
+        base_url=config.base_url
+    )
+    
+    try:
+        _core = GameCore(llm_config=new_config)
+        _current_config = new_config
+        
+        return ActionResponse(
+            success=True,
+            message=f"LLM changed to {config.provider}/{config.model_name}"
+        )
+    except Exception as e:
+        return ActionResponse(
+            success=False,
+            message=f"Failed to change LLM: {str(e)}"
+        )
+
+
+@app.post("/reload", response_model=ActionResponse)
+async def reload_all_games():
+    """Reload games"""
+    global _core
+    
+    reload_games()
+    _core = None
+    
+    return ActionResponse(
+        success=True,
+        message=f"Reloaded. Active games: {get_active_game_types()}"
+    )
+
+
+@app.get("/health")
+async def health_check():
+    return {
+        "status": "healthy",
+        "active_games": get_active_game_types()
+    }
+
+
+# ============== STARTUP ==============
+@app.on_event("startup")
+async def startup():
+    print("🚀 Game Generator API started")
+    print(f"📋 Active games: {get_active_game_types()}")
+
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=2088)
diff --git a/backup_source/match.py b/backup_source/match.py
new file mode 100644
index 0000000..54241ea
--- /dev/null
+++ b/backup_source/match.py
@@ -0,0 +1,81 @@
+"""
+games/match.py - Match Game - Match sentences with images
+"""
+from typing import List
+from pydantic import BaseModel, Field
+from langchain_core.output_parsers import PydanticOutputParser
+
+
+# ============== SCHEMA ==============
+class MatchItem(BaseModel):
+    word: str = Field(description="The sentence to be matched (EXACT copy from source)")
+    match_with: str = Field(description="Short keyword for reference")
+    original_quote: str = Field(description="EXACT quote from source text")
+    image_description: str = Field(default="", description="Detailed visual description for image generation/search")
+    image_is_complex: bool = Field(default=False, description="True if image needs precise quantities, humans, or multiple detailed objects")
+
+
+class MatchOutput(BaseModel):
+    """Output wrapper for match items"""
+    items: List[MatchItem] = Field(description="List of match items generated from source text")
+
+
+# Output parser
+output_parser = PydanticOutputParser(pydantic_object=MatchOutput)
+
+
+# ============== CONFIG ==============
+GAME_CONFIG = {
+    "game_type": "match",
+    "display_name": "Match with Image",
+    "description": "Match sentences with images",
+    
+    "active": True,
+    
+    "min_items": 2,
+    "max_items": 10,
+    "schema": MatchItem,
+    "output_schema": MatchOutput,
+    "output_parser": output_parser,
+    
+    "system_prompt": """Extract sentences and create image descriptions for matching game.
+The game will show images and players must match them with the correct sentences.
+
+YOUR TASK:
+1. Extract meaningful sentences from the source text
+2. Create a DETAILED image_description that clearly represents the sentence
+3. The image should be distinct enough to match with its sentence
+
+CRITICAL RULES:
+1. KEEP THE ORIGINAL LANGUAGE - Do NOT translate the source text
+2. original_quote MUST be an EXACT copy from source text
+3. image_description must be DETAILED and SPECIFIC to the sentence content
+4. Each image should be visually distinguishable from others""",
+}
+
+
+# ============== EXAMPLES ==============
+EXAMPLES = [
+    {
+        "input": "The Sun is a star. The Moon orbits Earth.",
+        "output": {
+            "items": [
+                {
+                    "word": "The Sun is a star.",
+                    "match_with": "sun",
+                    "original_quote": "The Sun is a star.",
+                    "image_description": "A bright glowing yellow sun with solar flares",
+                    "image_is_complex": False
+                },
+                {
+                    "word": "The Moon orbits Earth.",
+                    "match_with": "moon",
+                    "original_quote": "The Moon orbits Earth.",
+                    "image_description": "A grey moon circling around the blue Earth planet",
+                    "image_is_complex": False
+                }
+            ]
+        },
+        "why_suitable": "Has distinct concepts that can be visualized and matched"
+    }
+]
diff --git a/backup_source/memory_card.py b/backup_source/memory_card.py
new file mode 100644
index 0000000..1d2d6f1
--- /dev/null
+++ b/backup_source/memory_card.py
@@ -0,0 +1,61 @@
+"""
+games/memory_card.py - Memory Card Game - Flip cards to find pairs
+"""
+from typing import List
+from pydantic import BaseModel, Field
+from langchain_core.output_parsers import PydanticOutputParser
+
+
+# ============== SCHEMA ==============
+class MemoryCardItem(BaseModel):
+    name: str = Field(description="Card content/label")
+    pair_id: str = Field(description="ID to match pairs (same pair_id = matching cards)")
+    original_quote: str = Field(description="EXACT quote from source text")
+    image_description: str = Field(default="", description="Visual description for the card")
+    image_is_complex: bool = Field(default=False, description="True if image needs precise quantities, humans, or multiple detailed objects")
+
+
+class MemoryCardOutput(BaseModel):
+    """Output wrapper for memory card items"""
+    items: List[MemoryCardItem] = Field(description="List of memory card items generated from source text")
+
+
+# Output parser
+output_parser = PydanticOutputParser(pydantic_object=MemoryCardOutput)
+
+
+# ============== CONFIG ==============
+GAME_CONFIG = {
+    "game_type": "memory_card",
+    "display_name": "Memory Card",
+    "description": "Flip cards to find pairs",
+    
+    "active": False,  # Disabled
+    
+    "min_items": 4,
+    "max_items": 10,
+    "schema": MemoryCardItem,
+    "output_schema": MemoryCardOutput,
+    "output_parser": output_parser,
+    
+    "system_prompt": """Create memory card pairs.
+CRITICAL RULES:
+1. KEEP THE ORIGINAL LANGUAGE - Do NOT translate the source text
+2. original_quote MUST be an EXACT copy from source text
+3. ALL content must come from the source text only""",
+}
+
+
+# ============== EXAMPLES ==============
+EXAMPLES = [
+    {
+        "input": "The Sun is a star.",
+        "output": {
+            "items": [
+                {"name": "The Sun", "pair_id": "p1", "original_quote": "The Sun is a star.", "image_description": "A bright sun", "image_is_complex": False},
+                {"name": "a star", "pair_id": "p1", "original_quote": "The Sun is a star.", "image_description": "A glowing star", "image_is_complex": False}
+            ]
+        },
+        "why_suitable": "Has concept pairs"
+    }
+]
diff --git a/backup_source/sequence_sentence.py b/backup_source/sequence_sentence.py
new file mode 100644
index 0000000..5fb4a02
--- /dev/null
+++ b/backup_source/sequence_sentence.py
@@ -0,0 +1,127 @@
+"""
+games/sequence_sentence.py - Arrange Sentences Game
+type_id = 2
+"""
+from typing import List
+from pydantic import BaseModel, Field
+from langchain_core.output_parsers import PydanticOutputParser
+
+
+# ============== SCHEMA ==============
+class SentenceItem(BaseModel):
+    sentence: str = Field(description="Full sentence to arrange (EXACT from source)")
+    original_quote: str = Field(description="EXACT quote from source text")
+    image_description: str = Field(default="", description="Visual description of the content")
+    image_keywords: List[str] = Field(default=[], description="Keywords for image search")
+    image_is_complex: bool = Field(default=False, description="True if image needs precise quantities, humans, or multiple detailed objects")
+
+
+class SentenceMetadata(BaseModel):
+    """Metadata đánh giá nội dung"""
+    title: str = Field(
+        description="Title for this content. Prefer title from source document if available and suitable, otherwise create a short descriptive title."
+    )
+    description: str = Field(
+        description="Short description summarizing the content/topic."
+    )
+    grade: int = Field(
+        description="Estimated grade level 1-5 (1=easy/young, 5=advanced/older). Judge by vocabulary, concepts."
+    )
+    type: str = Field(default="sequence_sentence", description="Game type")
+    difficulty: int = Field(
+        description="Difficulty 1-5 for that grade (1=very easy, 5=very hard). Judge by sentence complexity, vocabulary."
+    )
+
+
+class SentenceOutput(BaseModel):
+    """Output wrapper for sentence items"""
+    items: List[SentenceItem] = Field(description="List of sentence items generated from source text")
+    metadata: SentenceMetadata = Field(description="Metadata about the content")
+
+
+# Output parser
+output_parser = PydanticOutputParser(pydantic_object=SentenceOutput)
+
+
+# ============== CONFIG ==============
+GAME_CONFIG = {
+    "game_type": "sequence_sentence",
+    "display_name": "Arrange Sentences",
+    "description": "Arrange sentences in order",
+    "type_id": 2,
+    
+    "active": True,
+    
+    "max_items": 10,
+    "schema": SentenceItem,
+    "output_schema": SentenceOutput,
+    "output_parser": output_parser,
+    
+    # Dùng cho analyze + generate (không có format rules)
+    "system_prompt": """Extract sentences from source text.
+
+RULES:
+1. KEEP THE ORIGINAL LANGUAGE - Do NOT translate
+2. sentence = EXACT copy from source text
+3. original_quote = same as sentence value
+4. image_description = ALWAYS provide a short visual description (NEVER empty)
+5. image_is_complex = FALSE for simple/static objects, TRUE for quantities/humans/complex scenes""",
+    
+    # Dùng cho generate trực tiếp (CÓ format rules)
+    "direct_prompt": """Extract sentences from source text.
+
+EXPECTED INPUT: List of sentences (separated by semicolon, newline, or similar)
+
+STEP 1 - VALIDATE INPUT:
+Analyze if input looks like a list of sentences suitable for "arrange sentences" game.
+- Should contain multiple complete sentences
+- Should NOT be a quiz, single word list, or Q&A format
+
+If input is clearly NOT suitable (e.g. it's a quiz, single words only, or wrong format), return:
+{{"items": [], "format_error": "Input không phù hợp cho game sắp xếp câu"}}
+
+STEP 2 - EXTRACT (if valid):
+RULES:
+1. KEEP THE ORIGINAL LANGUAGE - Do NOT translate
+2. Extract ALL sentences from source
+3. sentence = EXACT sentence from source (trim whitespace)
+4. original_quote = same as sentence value
+5. image_description = ALWAYS provide a short visual description (NEVER leave empty)
+6. image_is_complex:
+   - FALSE: simple objects, static things, no specific quantities (e.g. "a sun", "a tree")
+   - TRUE: needs exact quantities, humans/people, or complex details (e.g. "3 birds", "a boy reading")""",
+}
+
+
+# ============== EXAMPLES ==============
+EXAMPLES = [
+    {
+        "input": "The Sun is a star; The Moon orbits Earth; Mars is red",
+        "output": {
+            "items": [
+                {
+                    "sentence": "The Sun is a star",
+                    "original_quote": "The Sun is a star",
+                    "image_description": "A bright glowing sun",
+                    "image_keywords": ["sun", "star"],
+                    "image_is_complex": False
+                },
+                {
+                    "sentence": "The Moon orbits Earth",
+                    "original_quote": "The Moon orbits Earth",
+                    "image_description": "Moon circling around Earth",
+                    "image_keywords": ["moon", "earth", "orbit"],
+                    "image_is_complex": False
+                },
+                {
+                    "sentence": "Mars is red",
+                    "original_quote": "Mars is red",
+                    "image_description": "Red planet Mars",
+                    "image_keywords": ["mars", "red", "planet"],
+                    "image_is_complex": False
+                }
+            ]
+        },
+        "why_suitable": "Source has sentences separated by semicolons"
+    }
+]
diff --git a/backup_source/sequence_word.py b/backup_source/sequence_word.py
new file mode 100644
index 0000000..f6e6a38
--- /dev/null
+++ b/backup_source/sequence_word.py
@@ -0,0 +1,134 @@
+"""
+games/sequence_word.py - Arrange Words Game
+type_id = 3
+"""
+from typing import List
+from pydantic import BaseModel, Field
+from langchain_core.output_parsers import PydanticOutputParser
+
+
+# ============== SCHEMA ==============
+class WordItem(BaseModel):
+    word: str = Field(description="Word or phrase to arrange (EXACT from source)")
+    original_quote: str = Field(description="EXACT quote from source text")
+    image_description: str = Field(default="", description="Visual description of the content")
+    image_keywords: List[str] = Field(default=[], description="Keywords for image search")
+    image_is_complex: bool = Field(default=False, description="True if image needs precise quantities, humans, or multiple detailed objects")
+
+
+class WordMetadata(BaseModel):
+    """Metadata đánh giá nội dung"""
+    title: str = Field(
+        description="Title for this content. Prefer title from source document if available and suitable, otherwise create a short descriptive title."
+    )
+    description: str = Field(
+        description="Short description summarizing the content/topic."
+    )
+    grade: int = Field(
+        description="Estimated grade level 1-5 (1=easy/young, 5=advanced/older). Judge by vocabulary complexity."
+    )
+    type: str = Field(default="sequence_word", description="Game type")
+    difficulty: int = Field(
+        description="Difficulty 1-5 for that grade (1=very easy, 5=very hard). Judge by word complexity, number of items."
+    )
+
+
+class WordOutput(BaseModel):
+    """Output wrapper for word items"""
+    items: List[WordItem] = Field(description="List of word items generated from source text")
+    metadata: WordMetadata = Field(description="Metadata about the content")
+
+
+# Output parser
+output_parser = PydanticOutputParser(pydantic_object=WordOutput)
+
+
+# ============== CONFIG ==============
+GAME_CONFIG = {
+    "game_type": "sequence_word",
+    "display_name": "Arrange Words",
+    "description": "Arrange words or phrases in order",
+    "type_id": 3,
+    
+    "active": True,
+    
+    "max_items": 10,
+    "schema": WordItem,
+    "output_schema": WordOutput,
+    "output_parser": output_parser,
+    
+    # Dùng cho analyze + generate (không có format rules)
+    "system_prompt": """Extract words or phrases from source text.
+
+RULES:
+1. KEEP THE ORIGINAL LANGUAGE - Do NOT translate
+2. word = EXACT copy from source text
+3. original_quote = same as word value
+4. image_description = ALWAYS provide a short visual description (NEVER empty)
+5. image_is_complex = FALSE for simple/static objects, TRUE for quantities/humans/complex scenes""",
+    
+    # Dùng cho generate trực tiếp (CÓ format rules)
+    "direct_prompt": """Extract words or phrases from source text.
+
+EXPECTED INPUT: List of words/phrases (separated by semicolon, comma, newline, or similar)
+
+STEP 1 - VALIDATE INPUT:
+Analyze if input looks like a list of words/phrases suitable for "arrange words" game.
+- Should contain multiple short words or phrases
+- Should NOT be a paragraph, essay, or Q&A format
+
+If input is clearly NOT suitable (e.g. it's a quiz, a long paragraph, or wrong format), return:
+{{"items": [], "format_error": "Input không phù hợp cho game sắp xếp từ"}}
+
+STEP 2 - EXTRACT (if valid):
+RULES:
+1. KEEP THE ORIGINAL LANGUAGE - Do NOT translate
+2. Extract ALL words/phrases from source
+3. word = EXACT word/phrase from source (trim whitespace)
+4. original_quote = same as word value
+5. image_description = ALWAYS provide a short visual description (NEVER leave empty)
+6. image_is_complex:
+   - FALSE: simple objects, static things, no specific quantities (e.g. "an apple", "a book")
+   - TRUE: needs exact quantities, humans/people, or complex details (e.g. "5 oranges", "a woman cooking")""",
+}
+
+
+# ============== EXAMPLES ==============
+EXAMPLES = [
+    {
+        "input": "Apple; Banana; Orange; Grape",
+        "output": {
+            "items": [
+                {
+                    "word": "Apple",
+                    "original_quote": "Apple",
+                    "image_description": "A red apple",
+                    "image_keywords": ["apple"],
+                    "image_is_complex": False
+                },
+                {
+                    "word": "Banana",
+                    "original_quote": "Banana",
+                    "image_description": "A yellow banana",
+                    "image_keywords": ["banana"],
+                    "image_is_complex": False
+                },
+                {
+                    "word": "Orange",
+                    "original_quote": "Orange",
+                    "image_description": "An orange fruit",
+                    "image_keywords": ["orange"],
+                    "image_is_complex": False
+                },
+                {
+                    "word": "Grape",
+                    "original_quote": "Grape",
+                    "image_description": "Purple grapes",
+                    "image_keywords": ["grape"],
+                    "image_is_complex": False
+                }
+            ]
+        },
+        "why_suitable": "Source has words separated by semicolons"
+    }
+]
diff --git a/postman_collection.json b/postman_collection.json
new file mode 100644
index 0000000..31a028b
--- /dev/null
+++ b/postman_collection.json
@@ -0,0 +1,265 @@
+{
+    "info": {
+        "name": "Game Generator API",
+        "description": "API tạo game giáo dục từ văn bản",
+        "schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
+    },
+    "item": [
+        {
+            "name": "📊 Generate Multi",
+            "request": {
+                "method": "POST",
+                "header": [
+                    {
+                        "key": "Content-Type",
+                        "value": "application/json"
+                    }
+                ],
+                "body": {
+                    "mode": "raw",
+                    "raw": "{\n    \"text\": \"Mặt Trời là ngôi sao ở trung tâm của Hệ Mặt Trời.\",\n    \"enabled_game_ids\": [1, 2],\n    \"max_items\": 3\n}"
+                },
+                "url": {
+                    "raw": "http://localhost:8000/generate",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "generate"
+                    ]
+                },
+                "description": "Analyze + Generate nhiều games\n\nREQUEST:\n• text (required)\n• enabled_game_ids: [1,2,3] (optional)\n• max_items: 3 (optional)\n• min_score: 30 (optional)\n• run_validator: true (optional)\n\nRESPONSE:\n• games: [1, 2]\n• results: {1: [...], 2: [...]}"
+            }
+        },
+        {
+            "name": "🎯 Generate Single Best",
+            "request": {
+                "method": "POST",
+                "header": [
+                    {
+                        "key": "Content-Type",
+                        "value": "application/json"
+                    }
+                ],
+                "body": {
+                    "mode": "raw",
+                    "raw": "{\n    \"text\": \"Python là ngôn ngữ lập trình phổ biến.\",\n    \"max_items\": 3\n}"
+                },
+                "url": {
+                    "raw": "http://localhost:8000/generate/single",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "generate",
+                        "single"
+                    ]
+                },
+                "description": "1 API call = Analyze + Generate 1 game tốt nhất\n\nRESPONSE:\n• type_id: 1\n• reason: \"...\"\n• items: [...]"
+            }
+        },
+        {
+            "name": "🎮 Direct Quiz (type_id=1)",
+            "request": {
+                "method": "POST",
+                "header": [
+                    {
+                        "key": "Content-Type",
+                        "value": "application/json"
+                    }
+                ],
+                "body": {
+                    "mode": "raw",
+                    "raw": "{\n    \"text\": \"Question: Thủ đô Việt Nam?\\nA. Hà Nội\\nB. TP HCM\\nC. Đà Nẵng\\nD. Huế\\nCorrect: A\",\n    \"max_items\": 5\n}"
+                },
+                "url": {
+                    "raw": "http://localhost:8000/generate/1",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "generate",
+                        "1"
+                    ]
+                },
+                "description": "Generate Quiz trực tiếp\n\nINPUT FORMAT:\nQuestion: ...\nA. ...\nB. ...\nC. ...\nD. ...\nCorrect: A"
+            }
+        },
+        {
+            "name": "🎮 Direct Sentence (type_id=2)",
+            "request": {
+                "method": "POST",
+                "header": [
+                    {
+                        "key": "Content-Type",
+                        "value": "application/json"
+                    }
+                ],
+                "body": {
+                    "mode": "raw",
+                    "raw": "{\n    \"text\": \"Mặt trời mọc; Chim hót; Người thức dậy\",\n    \"max_items\": 10\n}"
+                },
+                "url": {
+                    "raw": "http://localhost:8000/generate/2",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "generate",
+                        "2"
+                    ]
+                },
+                "description": "Generate Arrange Sentences trực tiếp\n\nINPUT FORMAT:\nsentence1; sentence2; sentence3"
+            }
+        },
+        {
+            "name": "🎮 Direct Word (type_id=3)",
+            "request": {
+                "method": "POST",
+                "header": [
+                    {
+                        "key": "Content-Type",
+                        "value": "application/json"
+                    }
+                ],
+                "body": {
+                    "mode": "raw",
+                    "raw": "{\n    \"text\": \"Apple; Banana; Orange; Grape\",\n    \"max_items\": 10\n}"
+                },
+                "url": {
+                    "raw": "http://localhost:8000/generate/3",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "generate",
+                        "3"
+                    ]
+                },
+                "description": "Generate Arrange Words trực tiếp\n\nINPUT FORMAT:\nword1; word2; word3"
+            }
+        },
+        {
+            "name": "📋 List Games",
+            "request": {
+                "method": "GET",
+                "url": {
+                    "raw": "http://localhost:8000/games",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "games"
+                    ]
+                },
+                "description": "Danh sách games\n\nRESPONSE:\n[\n  {type_id: 1, game_type: \"quiz\", ...},\n  {type_id: 2, ...},\n  {type_id: 3, ...}\n]"
+            }
+        },
+        {
+            "name": "⚙️ Get LLM",
+            "request": {
+                "method": "GET",
+                "url": {
+                    "raw": "http://localhost:8000/llm",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "llm"
+                    ]
+                }
+            }
+        },
+        {
+            "name": "⚙️ Set LLM - Gemini",
+            "request": {
+                "method": "POST",
+                "header": [
+                    {
+                        "key": "Content-Type",
+                        "value": "application/json"
+                    }
+                ],
+                "body": {
+                    "mode": "raw",
+                    "raw": "{\n    \"provider\": \"gemini\",\n    \"model_name\": \"gemini-2.0-flash-lite\"\n}"
+                },
+                "url": {
+                    "raw": "http://localhost:8000/llm",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "llm"
+                    ]
+                }
+            }
+        },
+        {
+            "name": "⚙️ Set LLM - Ollama",
+            "request": {
+                "method": "POST",
+                "header": [
+                    {
+                        "key": "Content-Type",
+                        "value": "application/json"
+                    }
+                ],
+                "body": {
+                    "mode": "raw",
+                    "raw": "{\n    \"provider\": \"ollama\",\n    \"model_name\": \"qwen2.5:14b\",\n    \"base_url\": \"http://localhost:11434\"\n}"
+                },
+                "url": {
+                    "raw": "http://localhost:8000/llm",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "llm"
+                    ]
+                }
+            }
+        },
+        {
+            "name": "🔄 Reload Games",
+            "request": {
+                "method": "POST",
+                "url": {
+                    "raw": "http://localhost:8000/reload",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "reload"
+                    ]
+                }
+            }
+        },
+        {
+            "name": "❤️ Health",
+            "request": {
+                "method": "GET",
+                "url": {
+                    "raw": "http://localhost:8000/health",
+                    "host": [
+                        "localhost"
+                    ],
+                    "port": "8000",
+                    "path": [
+                        "health"
+                    ]
+                }
+            }
+        }
+    ]
+}
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..2d32f14
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,20 @@
+# Game Generator - Dependencies
+
+# LangChain Core
+langchain>=0.1.0
+langchain-core>=0.1.0
+
+# LLM Providers
+langchain-google-genai>=1.0.0
+langchain-openai>=0.0.5
+langchain-ollama>=0.1.0
+
+# Pydantic
+pydantic>=2.0.0
+
+# API Server
+fastapi>=0.100.0
+uvicorn>=0.23.0
+
+# Utilities
+python-dotenv>=1.0.0
diff --git a/src/__init__.py b/src/__init__.py
new file mode 100644
index 0000000..8f811b0
--- /dev/null
+++ b/src/__init__.py
@@ -0,0 +1,44 @@
+"""
+src - Game Generator Core Package
+"""
+from src.core import GameCore
+from src.game_registry import (
+    GameRegistry, 
+    get_registry, 
+    reload_games,
+    get_active_game_types,
+    get_active_type_ids,
+    get_game_by_id,
+    get_game,
+    id_to_type,
+    type_to_id
+)
+from src.llm_config import ModelConfig, get_llm, get_default_config, create_config
+from src.validator import QuoteValidator, quick_validate
+
+
+__all__ = [
+    # Core
+    "GameCore",
+    
+    # Registry
+    "GameRegistry",
+    "get_registry",
+    "reload_games",
+    "get_active_game_types",
+    "get_active_type_ids",
+    "get_game_by_id",
+    "get_game",
+    "id_to_type",
+    "type_to_id",
+    
+    # LLM Config
+    "ModelConfig",
+    "get_llm",
+    "get_default_config",
+    "create_config",
+    
+    # Validator
+    "QuoteValidator",
+    "quick_validate",
+]
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diff --git a/src/core.py b/src/core.py
new file mode 100644
index 0000000..3624d14
--- /dev/null
+++ b/src/core.py
@@ -0,0 +1,513 @@
+"""
+core.py - Simple Game Generator Core
+
+3 USE CASES:
+1. run_multi()  - Analyze + generate nhiều games phù hợp
+2. run_single() - Analyze + generate 1 game tốt nhất (1 API call)
+3. generate()   - Generate 1 game cụ thể (không analyze)
+"""
+import os
+import json
+import time
+from typing import List, Dict, Any, Optional, Union
+from dataclasses import dataclass
+
+from langchain_core.prompts import ChatPromptTemplate
+
+from .llm_config import ModelConfig, get_llm, get_default_config
+from .game_registry import get_registry, get_game, get_analyzer_context
+from .validator import QuoteValidator
+from .logger import logger
+
+
+@dataclass
+class TokenUsage:
+    prompt_tokens: int = 0
+    completion_tokens: int = 0
+    total_tokens: int = 0
+    
+    def add(self, usage: Dict[str, int]):
+        self.prompt_tokens += usage.get("prompt_tokens", 0) or usage.get("input_tokens", 0)
+        self.completion_tokens += usage.get("completion_tokens", 0) or usage.get("output_tokens", 0)
+        self.total_tokens = self.prompt_tokens + self.completion_tokens
+    
+    def to_dict(self) -> Dict[str, int]:
+        return {"prompt_tokens": self.prompt_tokens, "completion_tokens": self.completion_tokens, "total_tokens": self.total_tokens}
+
+
+class GameCore:
+    """
+    Simple Game Generator.
+    
+    Usage:
+        core = GameCore()
+        
+        # 1. Generate nhiều games (analyze first)
+        result = core.run_multi(text)
+        
+        # 2. Generate 1 game tốt nhất (1 API call)
+        result = core.run_single(text)
+        
+        # 3. Generate 1 game cụ thể
+        result = core.generate("quiz", text)
+    """
+    
+    def __init__(self, llm_config: Optional[Union[ModelConfig, Dict, str]] = None):
+        self.llm_config = self._parse_config(llm_config)
+        self.llm = get_llm(self.llm_config)
+        self.validator = QuoteValidator()
+        self.registry = get_registry()
+        print(f"🤖 LLM: {self.llm_config.provider}/{self.llm_config.model_name}")
+    
+    def _parse_config(self, config) -> ModelConfig:
+        if config is None:
+            if os.getenv("GOOGLE_API_KEY"):
+                return get_default_config("gemini")
+            elif os.getenv("OPENAI_API_KEY"):
+                return get_default_config("openai")
+            return get_default_config("ollama")
+        
+        if isinstance(config, ModelConfig):
+            return config
+        if isinstance(config, str):
+            return get_default_config(config)
+        if isinstance(config, dict):
+            return ModelConfig(**config)
+        raise ValueError(f"Invalid config: {type(config)}")
+    
+    # ============== 1. RUN MULTI (Analyze + Generate nhiều games) ==============
+    
+    def run_multi(
+        self,
+        text: str,
+        enabled_games: Optional[List[str]] = None,
+        max_items: int = 3,
+        min_score: int = 20,
+        validate: bool = True,
+        debug: bool = False
+    ) -> Dict[str, Any]:
+        """
+        Analyze text + Generate nhiều games phù hợp.
+        
+        Returns: {success, games, results, errors, token_usage, llm}
+        """
+        tracker = TokenUsage()
+        errors = []
+        
+        # 1. Analyze (also returns metadata)
+        available = enabled_games or self.registry.get_game_types()
+        logger.info(f"Analyzing text for multi-gen. Available games: {available}")
+        games, scores, metadata, err = self._analyze(text, available, min_score, tracker, debug)
+        errors.extend(err)
+        
+        if not games:
+            logger.warning("Analyzer found no suitable games matches.")
+            return self._result(False, [], {}, errors, tracker, metadata=metadata)
+        
+        logger.info(f"Analyzer selected: {games}")
+        
+        # 2. Generate
+        results, err = self._generate_multi(games, text, max_items, tracker, debug)
+        errors.extend(err)
+        
+        # 3. Validate
+        if validate:
+            results = self._validate(results, text)
+        
+        # Check if any game has items
+        has_items = any(data.get("items", []) for data in results.values() if isinstance(data, dict))
+        return self._result(has_items, games, results, errors, tracker, scores, metadata)
+    
+    # ============== 2. RUN SINGLE (1 API call: Analyze + Generate 1 game) ==============
+    
+    def run_single(
+        self,
+        text: str,
+        enabled_games: Optional[List[str]] = None,
+        max_items: int = 3,
+        validate: bool = True,
+        debug: bool = False
+    ) -> Dict[str, Any]:
+        """
+        1 API call: Analyze + Generate game tốt nhất.
+        
+        Returns: {success, game_type, reason, items, errors, token_usage, llm}
+        """
+        tracker = TokenUsage()
+        available = enabled_games or self.registry.get_game_types()
+        logger.info(f"Starting run_single for available games: {available}")
+        
+        # Build games info
+        games_info = []
+        for gt in available:
+            game = get_game(gt)
+            if game:
+                example = json.dumps(game.examples[0].get('output', {}), ensure_ascii=False, indent=2) if game.examples else "{}"
+                games_info.append(f"### {gt}\n{game.description}\nExample output:\n{example}")
+        
+        prompt = ChatPromptTemplate.from_messages([
+            ("system", """You are an educational game generator.
+1. ANALYZE text and CHOOSE the BEST game type
+2. GENERATE items for that game
+
+RULES:
+- KEEP original language
+- original_quote = EXACT copy from source
+- ALL content from source only"""),
+            ("human", """GAMES:
+{games_info}
+
+TEXT:
+{text}
+
+Choose BEST game from: {types}
+Generate max {max_items} items.
+
+Return JSON:
+{{"game_type": "chosen", "reason": "why", "items": [...]}}""")
+        ])
+        
+        content = {"games_info": "\n\n".join(games_info), "text": text[:2000], "types": ", ".join(available), "max_items": max_items}
+        
+        if debug:
+            print(f"\n{'='*50}\n🎯 RUN SINGLE\n{'='*50}")
+        
+        try:
+            resp = (prompt | self.llm).invoke(content)
+            tracker.add(self._get_usage(resp))
+            
+            data = self._parse_json(resp.content)
+            game_type = data.get("game_type")
+            items = self._post_process(data.get("items", []), game_type)
+            
+            if validate and items:
+                items = [i for i in items if self.validator.validate_quote(i.get("original_quote", ""), text).is_valid]
+            
+            return {
+                "success": len(items) > 0,
+                "game_type": game_type,
+                "reason": data.get("reason", ""),
+                "items": items,
+                "errors": [],
+                "token_usage": tracker.to_dict(),
+                "llm": f"{self.llm_config.provider}/{self.llm_config.model_name}"
+            }
+        except Exception as e:
+            return {"success": False, "game_type": None, "items": [], "errors": [str(e)], "token_usage": tracker.to_dict(), "llm": f"{self.llm_config.provider}/{self.llm_config.model_name}"}
+    
+    # ============== 3. GENERATE (1 game cụ thể, không analyze) ==============
+    
+    def generate(
+        self,
+        game_type: str,
+        text: str,
+        max_items: int = 3,
+        validate: bool = True,
+        debug: bool = False
+    ) -> Dict[str, Any]:
+        """Generate 1 game cụ thể"""
+        tracker = TokenUsage()
+        logger.info(f"Generating single game content: {game_type}")
+        
+        game = get_game(game_type)
+        
+        if not game:
+            return {"success": False, "game_type": game_type, "items": [], "errors": [f"Game not found: {game_type}"], "token_usage": {}, "llm": ""}
+        
+        # Build Format Rules Section
+        format_rules_section = ""
+        if game.input_format_rules:
+            rules_str = "\n".join(f"- {r}" for r in game.input_format_rules)
+            format_rules_section = f"""
+CRITICAL: FIRST, VALIDATE THE INPUT TEXT.
+Format Rules:
+{rules_str}
+
+If the text is completely UNSUITABLE for this game type, you MUST output strictly this JSON and nothing else:
+{{{{ "format_error": "Input text incompatible with game requirements." }}}}
+"""
+
+        prompt = ChatPromptTemplate.from_messages([
+            ("system", f"""{game.generated_system_prompt}
+{format_rules_section}"""),
+            ("human", """TEXT TO PROCESS:
+{text}
+
+Generate content in JSON format:
+{format_instructions}""")
+        ])
+        
+        if debug:
+            print(f"\n{'='*50}\n🎮 GENERATE: {game_type}\n{'='*50}")
+        
+        try:
+            resp = (prompt | self.llm).invoke({
+                "text": text,
+                "format_instructions": game.format_instructions
+            })
+            tracker.add(self._get_usage(resp))
+            
+            # 1. Parse as raw JSON first to check for format_error
+            raw_data = None
+            try:
+                raw_data = self._parse_json(resp.content)
+            except:
+                pass
+
+            # 2. Check if it's a format_error immediately
+            if raw_data and raw_data.get("format_error"):
+                return {
+                    "success": False,
+                    "game_type": game_type,
+                    "data": None,
+                    "format_error": raw_data["format_error"],
+                    "errors": [raw_data["format_error"]],
+                    "token_usage": tracker.to_dict(),
+                    "llm": f"{self.llm_config.provider}/{self.llm_config.model_name}"
+                }
+
+            parsed_data = raw_data
+            
+            # 3. Try output_parser for structured validation if present
+            if game.output_parser:
+                try:
+                    parsed = game.output_parser.parse(resp.content)
+                    parsed_data = parsed.model_dump()
+                except Exception as pe:
+                    if debug: print(f"⚠️ output_parser failed: {pe}")
+                    # Keep raw_data if parser fails but we have JSON
+
+            
+            # Check format error
+            if parsed_data and parsed_data.get("format_error"):
+                return {
+                    "success": False,
+                    "game_type": game_type,
+                    "data": None,
+                    "format_error": parsed_data["format_error"],
+                    "errors": [parsed_data["format_error"]],
+                    "token_usage": tracker.to_dict(),
+                    "llm": f"{self.llm_config.provider}/{self.llm_config.model_name}"
+                }
+            
+            # Post-process
+            items = parsed_data.get("items", []) if parsed_data else []
+            items = self._post_process(items, game_type)
+            
+            if validate and items:
+                items = [i for i in items if self.validator.validate_quote(i.get("original_quote", ""), text).is_valid]
+            
+            if not items:
+                return {
+                    "success": False,
+                    "game_type": game_type,
+                    "data": None,
+                    "format_error": "No items extracted",
+                     "errors": [],
+                    "token_usage": tracker.to_dict(),
+                    "llm": f"{self.llm_config.provider}/{self.llm_config.model_name}"
+                }
+            
+            if parsed_data:
+                parsed_data["items"] = items
+            
+            return {
+                "success": True,
+                "game_type": game_type,
+                "data": parsed_data,
+                "errors": [],
+                "token_usage": tracker.to_dict(),
+                "llm": f"{self.llm_config.provider}/{self.llm_config.model_name}"
+            }
+        except Exception as e:
+            return {"success": False, "game_type": game_type, "data": None, "errors": [str(e)], "token_usage": tracker.to_dict(), "llm": f"{self.llm_config.provider}/{self.llm_config.model_name}"}
+    
+    # ============== PRIVATE METHODS ==============
+    
+    def _analyze(self, text: str, available: List[str], min_score: int, tracker: TokenUsage, debug: bool) -> tuple:
+        """Analyze text để suggest games - với retry"""
+        # Lấy context từ game configs
+        context = get_analyzer_context()
+        
+        prompt = ChatPromptTemplate.from_messages([
+            ("system", """You are a game type analyzer. Score each game 0-100 based on how well the text matches the game requirements.
+
+GAME REQUIREMENTS:
+{context}
+
+SCORING:
+- 70-100: Text matches game requirements well
+- 40-69: Partial match
+- 0-39: Does not match requirements
+
+IMPORTANT: You MUST use the exact game type name (e.g. 'quiz', 'sequence') in the "type" field.
+
+Return valid JSON with scores AND metadata about the content:
+{{
+  "scores": [
+    {{
+      "type": "NAME_OF_GAME_TYPE", 
+      "score": 80, 
+      "reason": "..."
+    }}
+  ],
+  "metadata": {{
+    "title": "Title from source or create short title",
+    "description": "One sentence summary",
+    "grade": 1-5,
+    "difficulty": 1-5
+  }}
+}}"""),
+            ("human", """TEXT TO ANALYZE:
+{text}
+
+Analyze for games: {types}
+Return JSON:""")
+        ])
+        
+        max_retries = 2
+        for attempt in range(max_retries):
+            try:
+                resp = (prompt | self.llm).invoke({
+                    "context": context,
+                    "text": text[:800],
+                    "types": ", ".join(available)
+                })
+                tracker.add(self._get_usage(resp))
+                
+                if debug:
+                    print(f"📝 Analyzer raw: {resp.content[:300]}")
+                
+                # Parse JSON với fallback
+                content = resp.content.strip()
+                if not content:
+                    if debug:
+                        print(f"⚠️ Empty response, retry {attempt + 1}")
+                    continue
+                    
+                data = self._parse_json(content)
+                scores = [s for s in data.get("scores", []) if s.get("type") in available and s.get("score", 0) >= min_score]
+                scores.sort(key=lambda x: x.get("score", 0), reverse=True)
+                
+                # Extract metadata from response
+                metadata = data.get("metadata", {})
+                
+                if debug:
+                    print(f"🔍 Scores: {scores}")
+                    print(f"📋 Metadata: {metadata}")
+                
+                return [s["type"] for s in scores], scores, metadata, []
+                
+            except Exception as e:
+                if debug:
+                    print(f"⚠️ Analyze attempt {attempt + 1} failed: {e}")
+                if attempt == max_retries - 1:
+                    # Final fallback: return all games với low score
+                    return available, [], {}, [f"Analyze error: {e}"]
+        
+        return available, [], {}, ["Analyze failed after retries"]
+    
+    def _generate_multi(self, games: List[str], text: str, max_items: int, tracker: TokenUsage, debug: bool) -> tuple:
+        """Generate nhiều games"""
+        if len(games) == 1:
+            result = self.generate(games[0], text, max_items, validate=False, debug=debug)
+            tracker.add(result.get("token_usage", {}))
+            # Fix: generate returns {data: {items: [...]}} not {items: [...]}
+            data = result.get("data") or {}
+            items = data.get("items", []) if isinstance(data, dict) else []
+            return {games[0]: {"items": items, "metadata": data.get("metadata")}}, result.get("errors", [])
+        
+        # Multi-game: Build schema info for each game
+        games_schema = []
+        for gt in games:
+            game = get_game(gt)
+            if game:
+                games_schema.append(f"""### {gt.upper()}
+{game.generated_system_prompt}
+
+REQUIRED OUTPUT FORMAT:
+{game.format_instructions}""")
+        
+        prompt = ChatPromptTemplate.from_messages([
+            ("system", """You are a multi-game content generator. 
+Generate items for EACH game type following their EXACT schema.
+IMPORTANT: Include ALL required fields for each item (image_description, image_keywords, etc.)
+RULES: Keep original language, use exact quotes from text."""),
+            ("human", """GAMES AND THEIR SCHEMAS:
+{schemas}
+
+SOURCE TEXT:
+{text}
+
+Generate items for: {types}
+Return valid JSON: {{{format}}}""")
+        ])
+        
+        fmt = ", ".join([f'"{gt}": {{"items": [...], "metadata": {{...}}}}' for gt in games])
+        
+        try:
+            resp = (prompt | self.llm).invoke({
+                "schemas": "\n\n".join(games_schema),
+                "text": text,
+                "types": ", ".join(games),
+                "format": fmt
+            })
+            tracker.add(self._get_usage(resp))
+            
+            data = self._parse_json(resp.content)
+            results = {}
+            errors = []
+            for gt in games:
+                game_data = data.get(gt, {}) if isinstance(data.get(gt), dict) else {}
+                items = game_data.get("items", [])
+                items = self._post_process(items, gt)
+                # Thống nhất structure: {items: [...], metadata: {...}}
+                results[gt] = {"items": items, "metadata": game_data.get("metadata")}
+                if not items:
+                    errors.append(f"No items for {gt}")
+            
+            return results, errors
+        except Exception as e:
+            return {gt: {"items": [], "metadata": None} for gt in games}, [f"Generate error: {e}"]
+    
+    def _validate(self, results: Dict[str, dict], text: str) -> Dict[str, dict]:
+        """Validate items trong results"""
+        validated = {}
+        for gt, data in results.items():
+            items = data.get("items", []) if isinstance(data, dict) else []
+            valid_items = [i for i in items if self.validator.validate_quote(i.get("original_quote", ""), text).is_valid]
+            validated[gt] = {"items": valid_items, "metadata": data.get("metadata") if isinstance(data, dict) else None}
+        return validated
+    
+    def _post_process(self, items: List, game_type: str) -> List[Dict]:
+        ms = int(time.time() * 1000)
+        result = []
+        for i, item in enumerate(items):
+            d = item if isinstance(item, dict) else (item.model_dump() if hasattr(item, 'model_dump') else {})
+            d["id"] = f"{game_type[:2].upper()}-{ms}-{i}"
+            d["game_type"] = game_type
+            result.append(d)
+        return result
+    
+    def _parse_json(self, content: str) -> Dict:
+        if "```" in content:
+            content = content.split("```")[1].replace("json", "").strip()
+        return json.loads(content)
+    
+    def _get_usage(self, resp) -> Dict:
+        if hasattr(resp, 'response_metadata'):
+            meta = resp.response_metadata
+            return meta.get('usage', meta.get('usage_metadata', meta.get('token_usage', {})))
+        return getattr(resp, 'usage_metadata', {})
+    
+    def _result(self, success: bool, games: List, results: Dict, errors: List, tracker: TokenUsage, scores: List = None, metadata: Dict = None) -> Dict:
+        return {
+            "success": success,
+            "games": games,
+            "game_scores": scores or [],
+            "metadata": metadata or {},
+            "results": results,
+            "errors": errors,
+            "token_usage": tracker.to_dict(),
+            "llm": f"{self.llm_config.provider}/{self.llm_config.model_name}"
+        }
diff --git a/src/game_registry.py b/src/game_registry.py
new file mode 100644
index 0000000..b175b7b
--- /dev/null
+++ b/src/game_registry.py
@@ -0,0 +1,220 @@
+"""
+game_registry.py - Tự động load games từ thư mục games/
+
+Hệ thống sẽ:
+1. Scan thư mục games/ 
+2. Load mọi file .py (trừ _template.py và __init__.py)
+3. Chỉ load games có active: True
+4. Đăng ký tự động vào registry
+
+THÊM GAME MỚI = TẠO FILE TRONG games/
+BẬT/TẮT GAME = SỬA active: True/False trong file game
+"""
+import importlib.util
+from pathlib import Path
+from typing import Dict, List, Any, Optional
+from src.games.base import GameType, create_game_type
+
+
+class GameRegistry:
+    """
+    Registry tự động load games từ thư mục games/
+    Chỉ load games có active: True
+    
+    Supports lookup by:
+    - game_type (string): "quiz", "sequence"
+    - type_id (int): 1, 2
+    """
+    _instance: Optional["GameRegistry"] = None
+    _all_games: Dict[str, GameType] = {}  # Keyed by game_type
+    _id_map: Dict[int, str] = {}  # type_id -> game_type
+    _loaded: bool = False
+    
+    def __new__(cls):
+        if cls._instance is None:
+            cls._instance = super().__new__(cls)
+            cls._instance._all_games = {}
+            cls._instance._id_map = {}
+        return cls._instance
+    
+    def __init__(self):
+        if not self._loaded:
+            self._load_all_games()
+            self._loaded = True
+    
+    def _load_all_games(self):
+        """Scan và load tất cả game definitions từ games/"""
+        games_dir = Path(__file__).parent / "games"
+        
+        if not games_dir.exists():
+            print(f"⚠️ Games directory not found: {games_dir}")
+            return
+        
+        for file_path in games_dir.glob("*.py"):
+            # Skip __init__.py và _template.py và base.py
+            if file_path.name.startswith("_") or file_path.name == "base.py":
+                continue
+            
+            try:
+                game_def = self._load_game_from_file(file_path)
+                if game_def:
+                    self._all_games[game_def.game_type] = game_def
+                    if game_def.type_id > 0:
+                        self._id_map[game_def.type_id] = game_def.game_type
+                    status = "✅" if game_def.active else "⏸️"
+                    print(f"{status} Loaded: {game_def.game_type} (id={game_def.type_id}, active={game_def.active})")
+            except Exception as e:
+                print(f"❌ Error loading {file_path.name}: {e}")
+    
+    def _load_game_from_file(self, file_path: Path) -> Optional[GameType]:
+        """Load 1 game definition từ file"""
+        module_name = f"games.{file_path.stem}"
+        
+        spec = importlib.util.spec_from_file_location(module_name, file_path)
+        if spec is None or spec.loader is None:
+            return None
+        
+        module = importlib.util.module_from_spec(spec)
+        spec.loader.exec_module(module)
+        
+        config = getattr(module, "GAME_CONFIG", None)
+        examples = getattr(module, "EXAMPLES", [])
+        
+        if config is None:
+            return None
+            
+        # Inject examples if not in config
+        if examples and "examples" not in config:
+            config["examples"] = examples
+        
+        return create_game_type(config)
+    
+    def reload(self):
+        """Reload tất cả games"""
+        self._all_games.clear()
+        self._id_map.clear()
+        self._loaded = False
+        self._load_all_games()
+        self._loaded = True
+    
+    # ============== PUBLIC API ==============
+    
+    def get_game(self, game_type: str) -> Optional[GameType]:
+        """Lấy game by game_type (chỉ active)"""
+        game = self._all_games.get(game_type)
+        return game if game and game.active else None
+    
+    def get_game_by_id(self, type_id: int) -> Optional[GameType]:
+        """Lấy game by type_id (chỉ active)"""
+        game_type = self._id_map.get(type_id)
+        if game_type:
+            return self.get_game(game_type)
+        return None
+    
+    def get_game_type_by_id(self, type_id: int) -> Optional[str]:
+        """Convert type_id -> game_type"""
+        return self._id_map.get(type_id)
+    
+    def get_id_by_game_type(self, game_type: str) -> int:
+        """Convert game_type -> type_id"""
+        game = self._all_games.get(game_type)
+        return game.type_id if game else 0
+    
+    def get_all_games(self) -> Dict[str, GameType]:
+        """Lấy tất cả games ACTIVE"""
+        return {k: v for k, v in self._all_games.items() if v.active}
+    
+    def get_all_games_including_inactive(self) -> Dict[str, GameType]:
+        """Lấy tất cả games (kể cả inactive)"""
+        return self._all_games.copy()
+    
+    def get_game_types(self) -> List[str]:
+        """Lấy danh sách game types ACTIVE"""
+        return [k for k, v in self._all_games.items() if v.active]
+    
+    def get_type_ids(self) -> List[int]:
+        """Lấy danh sách type_ids ACTIVE"""
+        return [v.type_id for v in self._all_games.values() if v.active and v.type_id > 0]
+    
+    def get_analyzer_context(self) -> str:
+        """Tạo context cho Analyzer (chỉ từ active games)"""
+        context_parts = []
+        
+        for game_type, game in self._all_games.items():
+            if not game.active:
+                continue
+                
+            hints = game.analyzer_rules # New field name
+            if hints:
+                hints_text = "\n  - ".join(hints)
+                context_parts.append(
+                    f"**{game.display_name}** (id={game.type_id}):\n"
+                    f"  Description: {game.description}\n"
+                    f"  Suitable when:\n  - {hints_text}"
+                )
+        
+        return "\n\n".join(context_parts)
+    
+    def is_active(self, game_type: str) -> bool:
+        """Kiểm tra game có active không"""
+        game = self._all_games.get(game_type)
+        return game.active if game else False
+
+
+# ============== GLOBAL FUNCTIONS ==============
+_registry: Optional[GameRegistry] = None
+
+
+def get_registry() -> GameRegistry:
+    global _registry
+    if _registry is None:
+        _registry = GameRegistry()
+    return _registry
+
+
+def reload_games():
+    """Reload tất cả games (gọi sau khi thêm/sửa game)"""
+    get_registry().reload()
+
+
+def get_game(game_type: str) -> Optional[GameType]:
+    return get_registry().get_game(game_type)
+
+
+def get_active_game_types() -> List[str]:
+    return get_registry().get_game_types()
+
+
+def get_analyzer_context() -> str:
+    return get_registry().get_analyzer_context()
+
+
+def list_all_games() -> None:
+    """In danh sách tất cả games và trạng thái"""
+    registry = get_registry()
+    print("\n📋 DANH SÁCH GAMES:")
+    print("-" * 50)
+    for game_type, game in registry.get_all_games_including_inactive().items():
+        status = "✅ ACTIVE" if game.active else "⏸️ INACTIVE"
+        print(f"  [{game.type_id}] {game.display_name} ({game_type}): {status}")
+    print("-" * 50)
+
+
+def get_game_by_id(type_id: int) -> Optional[GameType]:
+    """Lấy game by type_id"""
+    return get_registry().get_game_by_id(type_id)
+
+
+def get_active_type_ids() -> List[int]:
+    """Lấy danh sách type_ids active"""
+    return get_registry().get_type_ids()
+
+
+def id_to_type(type_id: int) -> Optional[str]:
+    """Convert type_id -> game_type"""
+    return get_registry().get_game_type_by_id(type_id)
+
+
+def type_to_id(game_type: str) -> int:
+    """Convert game_type -> type_id"""
+    return get_registry().get_id_by_game_type(game_type)
diff --git a/src/games/__init__.py b/src/games/__init__.py
new file mode 100644
index 0000000..4366bd7
--- /dev/null
+++ b/src/games/__init__.py
@@ -0,0 +1,9 @@
+"""
+games/ - Game type definitions
+
+Mỗi game là 1 file với GAME_CONFIG dict.
+Thêm game mới = thêm file mới.
+"""
+from .base import GameType, create_game_type
+
+__all__ = ["GameType", "create_game_type"]
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diff --git a/src/games/_template.py b/src/games/_template.py
new file mode 100644
index 0000000..444d81e
--- /dev/null
+++ b/src/games/_template.py
@@ -0,0 +1,91 @@
+"""
+games/_template.py - TEMPLATE CHO GAME MỚI
+
+THÊM GAME MỚI CHỈ CẦN:
+1. Copy file này
+2. Rename thành <game_type>.py (ví dụ: matching.py)
+3. Sửa nội dung bên trong
+4. DONE! Hệ thống tự động nhận diện.
+
+Không cần sửa bất kỳ file nào khác!
+"""
+from typing import List, Optional
+from pydantic import BaseModel, Field
+
+
+# ============== 1. SCHEMA ==============
+# Định nghĩa structure của 1 item trong game
+# BẮT BUỘC phải có: original_quote và explanation
+
+class YourGameItem(BaseModel):
+    """Schema cho 1 item của game"""
+    
+    # Các trường BẮT BUỘC (để chống hallucination)
+    original_quote: str = Field(
+        description="Trích dẫn NGUYÊN VĂN từ văn bản gốc"
+    )
+    explanation: str = Field(description="Giải thích")
+    
+    # Thêm các trường riêng của game ở đây
+    # Ví dụ:
+    # question: str = Field(description="Câu hỏi")
+    # answer: str = Field(description="Đáp án")
+
+
+# ============== 2. CONFIG ==============
+# Cấu hình cho game
+
+GAME_CONFIG = {
+    # Key duy nhất cho game (dùng trong API)
+    "game_type": "your_game",  
+    
+    # Tên hiển thị
+    "display_name": "Tên Game",
+    
+    # Mô tả ngắn
+    "description": "Mô tả game của bạn",
+    
+    # Số lượng items
+    "max_items": 5,
+    
+    # Trỏ đến schema class
+    "schema": YourGameItem,
+    
+    # Prompt cho LLM
+    "system_prompt": """Bạn là chuyên gia tạo [tên game].
+
+NHIỆM VỤ: [Mô tả nhiệm vụ]
+
+QUY TẮC:
+1. original_quote PHẢI là trích dẫn NGUYÊN VĂN
+2. [Quy tắc khác]
+3. [Quy tắc khác]""",
+}
+
+
+# ============== 3. EXAMPLES ==============
+# Ví dụ input/output để:
+# - Analyzer học khi nào nên suggest game này
+# - Generator dùng làm few-shot
+
+EXAMPLES = [
+    {
+        # Input text mẫu
+        "input": "Văn bản mẫu ở đây...",
+        
+        # Output mong đợi
+        "output": {
+            "items": [
+                {
+                    "original_quote": "Trích dẫn từ văn bản",
+                    "explanation": "Giải thích",
+                    # Các trường khác của schema...
+                }
+            ]
+        },
+        
+        # Analyzer học từ trường này
+        "why_suitable": "Giải thích tại sao văn bản này phù hợp với game này"
+    },
+    # Thêm 1-2 examples nữa...
+]
diff --git a/src/games/base.py b/src/games/base.py
new file mode 100644
index 0000000..868aa3e
--- /dev/null
+++ b/src/games/base.py
@@ -0,0 +1,85 @@
+"""
+games/base.py - Base Game Type Definition
+"""
+from dataclasses import dataclass, field
+from typing import List, Dict, Any, Optional, Type
+from pydantic import BaseModel
+from langchain_core.output_parsers import PydanticOutputParser
+
+
+@dataclass
+class GameType:
+    """
+    Định nghĩa cấu trúc chuẩn cho một Game.
+    Mọi game phải tuân thủ cấu trúc này để Core có thể xử lý tự động.
+    """
+    # --- REQUIRED FIELDS (No default value) ---
+    type_id: int
+    game_type: str        # e.g. "quiz"
+    display_name: str     # e.g. "Multiple Choice Quiz"
+    description: str      # e.g. "Create questions from text"
+    
+    schema: Type[BaseModel]          # Schema cho 1 item (e.g. QuizItem)
+    output_schema: Type[BaseModel]   # Schema cho output (e.g. QuizOutput)
+    
+    generation_rules: List[str]      # Rules để tạo nội dung
+    analyzer_rules: List[str]        # Rules để analyzer nhận diện
+    
+    # --- OPTIONAL FIELDS (Has default value) ---
+    input_format_rules: List[str] = field(default_factory=list)  # Rules validate input format (Direct Mode)
+    active: bool = True
+    max_items: int = 10
+    examples: List[Dict[str, Any]] = field(default_factory=list)
+    output_parser: Optional[PydanticOutputParser] = None
+    
+    def __post_init__(self):
+        if self.output_parser is None and self.output_schema:
+            self.output_parser = PydanticOutputParser(pydantic_object=self.output_schema)
+
+    @property
+    def format_instructions(self) -> str:
+        """Lấy hướng dẫn format JSON từ parser"""
+        if self.output_parser:
+            return self.output_parser.get_format_instructions()
+        return ""
+
+    @property
+    def generated_system_prompt(self) -> str:
+        """Tự động tạo System Prompt từ rules và description"""
+        rules_txt = "\n".join([f"- {r}" for r in self.generation_rules])
+        return f"""Game: {self.display_name}
+Description: {self.description}
+
+GENERATION RULES:
+{rules_txt}
+
+Always ensure output follows the JSON schema exactly."""
+
+
+def create_game_type(config: Dict[str, Any]) -> GameType:
+    """Factory method to create GameType from Config Dict"""
+    # Backward compatibility mapping
+    gen_rules = config.get("generation_rules", [])
+    if not gen_rules and "system_prompt" in config:
+        # Nếu chưa có rules tách biệt, dùng tạm system_prompt cũ làm 1 rule
+        gen_rules = [config["system_prompt"]]
+
+    # Map analyzer_hints -> analyzer_rules
+    ana_rules = config.get("analyzer_rules", []) or config.get("analyzer_hints", [])
+
+    return GameType(
+        type_id=config.get("type_id", 0),
+        game_type=config["game_type"],
+        display_name=config["display_name"],
+        description=config["description"],
+        input_format_rules=config.get("input_format_rules", []),
+        active=config.get("active", True),
+        max_items=config.get("max_items", 10),
+        schema=config["schema"],
+        output_schema=config["output_schema"],
+        generation_rules=gen_rules,
+        analyzer_rules=ana_rules,
+        examples=config.get("examples", []),
+        output_parser=config.get("output_parser")
+    )
+
diff --git a/src/games/quiz.py b/src/games/quiz.py
new file mode 100644
index 0000000..c4ed989
--- /dev/null
+++ b/src/games/quiz.py
@@ -0,0 +1,139 @@
+"""
+games/quiz.py - Quiz Game - Multiple choice questions
+"""
+from typing import List, Literal
+import re
+from pydantic import BaseModel, Field
+from langchain_core.output_parsers import PydanticOutputParser
+
+
+# ============== SCHEMA ==============
+class QuizItem(BaseModel):
+    question: str = Field(description="The question based on source content")
+    answers: str = Field(description="The correct answer")
+    options: List[str] = Field(description="List of options including correct answer")
+    original_quote: str = Field(description="EXACT quote from source text")
+    image_description: str = Field(default="", description="Visual description for the question")
+    image_keywords: List[str] = Field(default=[], description="Keywords for image search")
+    image_is_complex: bool = Field(default=False, description="True if image needs precise quantities, humans, or multiple detailed objects")
+
+
+
+class QuizMetadata(BaseModel):
+    """Metadata đánh giá nội dung"""
+    title: str = Field(
+        description="Title for this content. Prefer title from source document if available and suitable, otherwise create a short descriptive title."
+    )
+    description: str = Field(
+        description="Short description summarizing the content/topic of the quiz."
+    )
+    grade: int = Field(
+        description="Estimated grade level 1-5 (1=easy/young, 5=advanced/older). Judge by vocabulary, concepts, required knowledge."
+    )
+    type: Literal["quiz"] = Field(default="quiz", description="Game type (always 'quiz')")
+    difficulty: int = Field(
+        description="Difficulty 1-5 for that grade (1=very easy, 5=very hard). Judge by question complexity, number of options, abstract concepts."
+    )
+
+
+class QuizOutput(BaseModel):
+    """Output wrapper for quiz items"""
+    items: List[QuizItem] = Field(description="List of quiz items generated from source text")
+    metadata: QuizMetadata = Field(description="Metadata about the quiz content")
+
+
+# Output parser
+output_parser = PydanticOutputParser(pydantic_object=QuizOutput)
+
+
+# ============== CONFIG ==============
+# ============== CONFIG ==============
+GAME_CONFIG = {
+    "game_type": "quiz",
+    "display_name": "Quiz",
+    "description": "Multiple choice questions",
+    "type_id": 1,
+    
+    "active": True,
+    
+    "max_items": 10,
+    "schema": QuizItem,
+    "output_schema": QuizOutput,
+    "output_parser": output_parser,
+    
+    "input_format_rules": [
+        "Text should contain facts or questions suitable for a quiz.",
+        "Prefer extracting existing multiple choice questions if available.",
+        "Text MUST contain questions with multiple choice options",
+    ],
+    
+    # 1. Recognition Rules (for Analyzer)
+    "analyzer_rules": [
+        "Text MUST contain questions with multiple choice options",
+        "NOT suitable if text is just a list of words with no questions",
+    ],
+    
+    # 2. Rules tạo nội dung (cho Generator)
+    "generation_rules": [
+        "KEEP ORIGINAL LANGUAGE - Do NOT translate",
+        "original_quote = EXACT quote from source text (full question block)",
+        "ALL content must come from source only - do NOT invent",
+        "REMOVE unnecessary numbering: 'Question 1:', '(1)', '(2)', 'A.', 'B.' from question/options/answers",
+        "STRICTLY CLEAN OUTPUT for 'answers': MUST contain ONLY the text content of the correct option.",
+        "FORBIDDEN in 'answers': Prefixes like '(1)', '(2)', 'A.', 'B.', '1.' - REMOVE THEM.",
+        "IMPORTANT: The 'answers' field MUST EXACTLY MATCH one of the 'options' values text-wise.",
+        
+        # VISUAL FIELD COMPULSORY
+        "image_description: MUST be a visual description relevant to the question in ENGLISH.",
+        "image_keywords: MUST provide 2-3 English keywords for search.",
+        "image_is_complex: FALSE for simple/static objects, TRUE for quantities/humans/complex scenes",
+        "NEVER leave image fields empty!",
+    ],
+    
+    "examples": EXAMPLES if 'EXAMPLES' in globals() else []
+}
+
+
+def clean_prefix(text: str) -> str:
+    """Remove prefixes like (1), (A), 1., A. from text"""
+    if not text: return text
+    # Regex: Start with ( (number/letter) ) OR number/letter dot. Followed by spaces.
+    return re.sub(r'^(\(\d+\)|\([A-Za-z]\)|\d+\.|[A-Za-z]\.)\s*', '', text).strip()
+
+
+def post_process_quiz(items: List[dict]) -> List[dict]:
+    """Clean up answers and options prefixes"""
+    for item in items:
+        # Clean answers
+        if item.get("answers"):
+            item["answers"] = clean_prefix(item["answers"])
+        
+        # Clean options
+        if item.get("options") and isinstance(item["options"], list):
+            item["options"] = [clean_prefix(opt) for opt in item["options"]]
+            
+    return items
+
+
+# Register handler
+GAME_CONFIG["post_process_handler"] = post_process_quiz
+
+
+# ============== EXAMPLES ==============
+EXAMPLES = [
+    {
+        "input": "The Sun is a star at the center of the Solar System.",
+        "output": {
+            "items": [{
+                "question": "Where is the Sun located?",
+                "answers": "At the center of the Solar System",
+                "options": ["At the center of the Solar System", "At the edge of the Solar System", "Near the Moon", "Outside the universe"],
+                "original_quote": "The Sun is a star at the center of the Solar System.",
+                "image_description": "The sun in the middle of planets",
+                "image_keywords": ["sun", "planets"],
+                "image_is_complex": False
+            }]
+        },
+        "why_suitable": "Has clear facts"
+    }
+]
diff --git a/src/games/sequence.py b/src/games/sequence.py
new file mode 100644
index 0000000..f93526a
--- /dev/null
+++ b/src/games/sequence.py
@@ -0,0 +1,173 @@
+"""
+games/sequence.py - Arrange Sequence Game (Sentences OR Words)
+type_id = 2
+LLM tự quyết định dựa vào ngữ nghĩa:
+- "good morning", "apple", "happy" → WORD
+- "Hi, I'm Lisa", "The sun rises" → SENTENCE
+Output trả về đúng trường: word hoặc sentence
+"""
+from typing import List, Literal, Optional
+from pydantic import BaseModel, Field
+from langchain_core.output_parsers import PydanticOutputParser
+
+
+# ============== SCHEMA ==============
+class SequenceItem(BaseModel):
+    """Item - LLM điền word HOẶC sentence, không điền cả 2"""
+    word: Optional[str] = Field(default=None, description="Fill this if item is a WORD/PHRASE (not complete sentence)")
+    sentence: Optional[str] = Field(default=None, description="Fill this if item is a COMPLETE SENTENCE")
+    original_quote: str = Field(description="EXACT quote from source text")
+    image_description: str = Field(default="", description="Visual description of the content")
+    image_keywords: List[str] = Field(default=[], description="Keywords for image search")
+    image_is_complex: bool = Field(default=False, description="True if image needs precise quantities, humans, or complex details")
+
+
+class SequenceMetadata(BaseModel):
+    """Metadata đánh giá nội dung"""
+    title: str = Field(
+        description="Title for this content. Prefer title from source document if available."
+    )
+    description: str = Field(
+        description="Short description summarizing the content/topic."
+    )
+    grade: int = Field(
+        description="Estimated grade level 1-5 (1=easy/young, 5=advanced/older)."
+    )
+    type: Literal["sequence"] = Field(default="sequence", description="Game type")
+    sub_type: Literal["sentence", "word"] = Field(
+        description="LLM decides: 'word' for words/phrases, 'sentence' for complete sentences"
+    )
+    difficulty: int = Field(
+        description="Difficulty 1-5 for that grade."
+    )
+
+
+class SequenceOutput(BaseModel):
+    """Output wrapper for sequence items"""
+    items: List[SequenceItem] = Field(description="List of sequence items")
+    metadata: SequenceMetadata = Field(description="Metadata about the content")
+
+
+# Output parser
+output_parser = PydanticOutputParser(pydantic_object=SequenceOutput)
+
+
+# ============== CONFIG ==============
+# ============== CONFIG ==============
+GAME_CONFIG = {
+    "game_type": "sequence",
+    "display_name": "Arrange Sequence",
+    "description": "Arrange sentences or words in order",
+    "type_id": 2,
+    
+    "active": True,
+    
+    "max_items": 10,
+    "schema": SequenceItem,
+    "output_schema": SequenceOutput,
+    "output_parser": output_parser,
+    
+    "input_format_rules": [
+        "Text MUST be a list of items (words, phrases, sentences) to be ordered.",
+        "Do NOT generate sequence from multiple choice questions (A/B/C/D).",
+        "Do NOT generate sequence if the text is a quiz or test format.",
+    ],
+    
+    # 1. Recognition Rules (for Analyzer)
+    "analyzer_rules": [
+        "Text is a list of words, phrases, or sentences suitable for ordering",
+        "Items are separated by commas, semicolons, or newlines",
+        "Example: 'apple, banana, orange' or 'Sentence 1; Sentence 2'",
+        "NO questions required - just a list of items",
+        "Text is NOT a long essay or complex dialogue",
+    ],
+    
+    # 2. Rules tạo nội dung (cho Generator)
+    "generation_rules": [
+        "KEEP ORIGINAL LANGUAGE - Do NOT translate",
+        "Analyze text semantically to extract meaningful items",
+        "For each item, decide type: WORD/PHRASE or SENTENCE",
+        "- If item is a WORD/PHRASE (label, noun, greeting) -> Fill 'word' field",
+        "- If item is a COMPLETE SENTENCE (subject+verb) -> Fill 'sentence' field",
+        "NEVER fill both fields for the same item",
+        "Set metadata.sub_type = 'word' or 'sentence' (all items should match sub_type)",
+        "Clean up OCR noise, numbering (e.g. '1. Apple' -> 'Apple')",
+        
+        # CONSISTENCY RULES
+        "CRITICAL: All extracted items MUST be of the SAME type.",
+        "Choose ONE type for the whole list: either ALL 'word' OR ALL 'sentence'.",
+        "If input has mixed types, pick the MAJORITY type and ignore the others.",
+        
+        # VISUAL FIELD COMPULSORY
+        "image_description: MUST be a visual description of the item in ENGLISH. Example: 'A red apple', 'Two people shaking hands'",
+        "image_keywords: MUST provide 2-3 English keywords for search. Example: ['apple', 'fruit', 'red']",
+    ],
+    
+    "examples": EXAMPLES if 'EXAMPLES' in globals() else []
+}
+
+
+# ============== EXAMPLES ==============
+EXAMPLES = [
+    {
+        "input": "apple; banana;\norange; grape;\ncat; dog;",
+        "output": {
+            "items": [
+                {"word": "apple", "sentence": None, "original_quote": "apple", "image_description": "A red apple", "image_keywords": ["apple"], "image_is_complex": False},
+                {"word": "banana", "sentence": None, "original_quote": "banana", "image_description": "A yellow banana", "image_keywords": ["banana"], "image_is_complex": False},
+                {"word": "orange", "sentence": None, "original_quote": "orange", "image_description": "An orange fruit", "image_keywords": ["orange"], "image_is_complex": False},
+                {"word": "grape", "sentence": None, "original_quote": "grape", "image_description": "Purple grapes", "image_keywords": ["grape"], "image_is_complex": False},
+                {"word": "cat", "sentence": None, "original_quote": "cat", "image_description": "A cat", "image_keywords": ["cat"], "image_is_complex": False},
+                {"word": "dog", "sentence": None, "original_quote": "dog", "image_description": "A dog", "image_keywords": ["dog"], "image_is_complex": False}
+            ],
+            "metadata": {
+                "title": "Animals and Fruits",
+                "description": "Common animals and fruits",
+                "grade": 1,
+                "type": "sequence",
+                "sub_type": "word",
+                "difficulty": 1
+            }
+        },
+        "why": "Items are single words → use 'word' field"
+    },
+    {
+        "input": "Hi, I'm Lisa; Nice to meet you; How are you?",
+        "output": {
+            "items": [
+                {"word": None, "sentence": "Hi, I'm Lisa", "original_quote": "Hi, I'm Lisa", "image_description": "A girl introducing herself", "image_keywords": ["girl", "greeting"], "image_is_complex": True},
+                {"word": None, "sentence": "Nice to meet you", "original_quote": "Nice to meet you", "image_description": "Two people shaking hands", "image_keywords": ["handshake", "greeting"], "image_is_complex": True},
+                {"word": None, "sentence": "How are you?", "original_quote": "How are you?", "image_description": "Person asking a question", "image_keywords": ["question", "greeting"], "image_is_complex": True}
+            ],
+            "metadata": {
+                "title": "English Greetings",
+                "description": "Common greeting sentences",
+                "grade": 2,
+                "type": "sequence",
+                "sub_type": "sentence",
+                "difficulty": 2
+            }
+        },
+        "why": "Items are complete sentences → use 'sentence' field"
+    },
+    {
+        "input": "good morning; good afternoon; good evening; good night",
+        "output": {
+            "items": [
+                {"word": "good morning", "sentence": None, "original_quote": "good morning", "image_description": "Morning sunrise", "image_keywords": ["morning", "sun"], "image_is_complex": False},
+                {"word": "good afternoon", "sentence": None, "original_quote": "good afternoon", "image_description": "Afternoon sun", "image_keywords": ["afternoon"], "image_is_complex": False},
+                {"word": "good evening", "sentence": None, "original_quote": "good evening", "image_description": "Evening sunset", "image_keywords": ["evening", "sunset"], "image_is_complex": False},
+                {"word": "good night", "sentence": None, "original_quote": "good night", "image_description": "Night sky with moon", "image_keywords": ["night", "moon"], "image_is_complex": False}
+            ],
+            "metadata": {
+                "title": "Time Greetings",
+                "description": "Greetings for different times of day",
+                "grade": 1,
+                "type": "sequence",
+                "sub_type": "word",
+                "difficulty": 1
+            }
+        },
+        "why": "These are PHRASES/GREETINGS, not complete sentences → use 'word' field"
+    }
+]
diff --git a/src/llm_config.py b/src/llm_config.py
new file mode 100644
index 0000000..c45b313
--- /dev/null
+++ b/src/llm_config.py
@@ -0,0 +1,191 @@
+"""
+llm_config.py - Cấu hình LLM linh hoạt
+
+Hỗ trợ:
+- Ollama (local)
+- Google Gemini
+- OpenAI
+
+Sử dụng:
+    from llm_config import ModelConfig, get_llm
+    
+    config = ModelConfig(provider="ollama", model_name="qwen2.5:14b")
+    llm = get_llm(config)
+"""
+import os
+from typing import Optional
+from pydantic import BaseModel, Field
+from langchain_core.language_models.chat_models import BaseChatModel
+
+
+class ModelConfig(BaseModel):
+    """Cấu hình cho LLM"""
+    provider: str = Field(
+        default="gemini",
+        description="Provider: ollama, gemini, openai"
+    )
+    model_name: str = Field(
+        default="gemini-2.0-flash-lite",
+        description="Tên model"
+    )
+    api_key: Optional[str] = Field(
+        default=None,
+        description="API key (nếu None, lấy từ env)"
+    )
+    temperature: float = Field(
+        default=0.1,
+        description="Độ sáng tạo (0.0 - 1.0)"
+    )
+    base_url: Optional[str] = Field(
+        default=None,
+        description="Base URL cho Ollama"
+    )
+    
+    class Config:
+        # Cho phép tạo từ dict
+        extra = "allow"
+
+
+# ============== DEFAULT CONFIGS ==============
+
+DEFAULT_CONFIGS = {
+    "ollama": ModelConfig(
+        provider="ollama",
+        model_name="qwen2.5:14b",
+        temperature=0.1,
+        base_url=None  # Sẽ lấy từ OLLAMA_BASE_URL env
+    ),
+    "ollama_light": ModelConfig(
+        provider="ollama",
+        model_name="qwen2.5:7b",
+        temperature=0.0,
+        base_url=None  # Sẽ lấy từ OLLAMA_BASE_URL env
+    ),
+    "gemini": ModelConfig(
+        provider="gemini",
+        model_name="gemini-2.0-flash-lite",
+        temperature=0.1
+    ),
+    "gemini_light": ModelConfig(
+        provider="gemini",
+        model_name="gemini-2.0-flash-lite",
+        temperature=0.0
+    ),
+    "openai": ModelConfig(
+        provider="openai",
+        model_name="gpt-4o-mini",
+        temperature=0.1
+    ),
+    "openai_light": ModelConfig(
+        provider="openai",
+        model_name="gpt-4o-mini",
+        temperature=0.0
+    ),
+}
+
+
+def get_default_config(name: str = "gemini") -> ModelConfig:
+    """Lấy config mặc định theo tên"""
+    return DEFAULT_CONFIGS.get(name, DEFAULT_CONFIGS["gemini"])
+
+
+# ============== LLM FACTORY ==============
+
+def get_llm(config: ModelConfig) -> BaseChatModel:
+    """
+    Factory function tạo LLM instance
+    
+    Args:
+        config: ModelConfig object
+        
+    Returns:
+        BaseChatModel instance
+    """
+    provider = config.provider.lower()
+    
+    if provider == "ollama":
+        from langchain_ollama import ChatOllama
+        
+        base_url = config.base_url or os.getenv("OLLAMA_BASE_URL", "http://localhost:11434")
+        return ChatOllama(
+            model=config.model_name,
+            temperature=config.temperature,
+            base_url=base_url
+        )
+    
+    elif provider == "gemini":
+        from langchain_google_genai import ChatGoogleGenerativeAI
+        
+        api_key = config.api_key or os.getenv("GOOGLE_API_KEY")
+        if not api_key:
+            raise ValueError("GOOGLE_API_KEY required for Gemini. Set via env or config.api_key")
+        
+        return ChatGoogleGenerativeAI(
+            model=config.model_name,
+            temperature=config.temperature,
+            google_api_key=api_key
+        )
+    
+    elif provider == "openai":
+        from langchain_openai import ChatOpenAI
+        
+        api_key = config.api_key or os.getenv("OPENAI_API_KEY")
+        if not api_key:
+            raise ValueError("OPENAI_API_KEY required for OpenAI. Set via env or config.api_key")
+        
+        return ChatOpenAI(
+            model=config.model_name,
+            temperature=config.temperature,
+            api_key=api_key
+        )
+    
+    else:
+        raise ValueError(f"Provider '{provider}' không được hỗ trợ. Chọn: ollama, gemini, openai")
+
+
+def get_completion_model(config: ModelConfig):
+    """
+    Tạo completion model (non-chat) nếu cần
+    Hiện tại chỉ Ollama có completion model riêng
+    """
+    if config.provider.lower() == "ollama":
+        from langchain_ollama.llms import OllamaLLM
+        
+        base_url = config.base_url or os.getenv("OLLAMA_BASE_URL", "http://localhost:11434")
+        return OllamaLLM(
+            model=config.model_name,
+            temperature=config.temperature,
+            base_url=base_url
+        )
+    
+    # Các provider khác dùng Chat interface
+    return get_llm(config)
+
+
+# ============== HELPER ==============
+
+def create_config(
+    provider: str = "gemini",
+    model_name: Optional[str] = None,
+    api_key: Optional[str] = None,
+    temperature: float = 0.1,
+    base_url: Optional[str] = None
+) -> ModelConfig:
+    """
+    Helper function tạo ModelConfig
+    
+    Nếu không chỉ định model_name, sẽ dùng default cho provider đó
+    """
+    default_models = {
+        "ollama": "qwen2.5:14b",
+        "gemini": "gemini-2.0-flash-lite",
+        "openai": "gpt-4o-mini"
+    }
+    
+    return ModelConfig(
+        provider=provider,
+        model_name=model_name or default_models.get(provider, "gemini-2.0-flash-lite"),
+        api_key=api_key,
+        temperature=temperature,
+        base_url=base_url
+    )
diff --git a/src/logger.py b/src/logger.py
new file mode 100644
index 0000000..7510ef6
--- /dev/null
+++ b/src/logger.py
@@ -0,0 +1,37 @@
+import logging
+import sys
+import os
+from logging.handlers import RotatingFileHandler
+
+def setup_logger(name: str = "sena_gen"):
+    logger = logging.getLogger(name)
+    
+    if logger.handlers:
+        return logger
+        
+    logger.setLevel(logging.INFO)
+    
+    # Format
+    formatter = logging.Formatter(
+        '[%(asctime)s] %(levelname)s [%(name)s:%(lineno)s] - %(message)s'
+    )
+    
+    # Console handler
+    console_handler = logging.StreamHandler(sys.stdout)
+    console_handler.setFormatter(formatter)
+    logger.addHandler(console_handler)
+    
+    # File handler (Optional - based on env)
+    log_file = os.getenv("LOG_FILE", "logs/gen_game.log")
+    if log_file:
+        os.makedirs(os.path.dirname(log_file), exist_ok=True)
+        file_handler = RotatingFileHandler(
+            log_file, maxBytes=10*1024*1024, backupCount=5, encoding='utf-8'
+        )
+        file_handler.setFormatter(formatter)
+        logger.addHandler(file_handler)
+        
+    return logger
+
+# Singleton logger
+logger = setup_logger()
diff --git a/src/validator.py b/src/validator.py
new file mode 100644
index 0000000..05ec56b
--- /dev/null
+++ b/src/validator.py
@@ -0,0 +1,204 @@
+"""
+validator.py - Hallucination Guardrail
+Kiểm tra original_quote có thực sự nằm trong văn bản gốc không (Python-based, 0 API calls)
+"""
+import re
+from typing import List, Dict, Any, Tuple, Optional
+from dataclasses import dataclass
+from difflib import SequenceMatcher
+import unicodedata
+
+
+@dataclass
+class ValidationResult:
+    """Kết quả validate một item"""
+    item_index: int
+    is_valid: bool
+    original_quote: str
+    match_found: bool
+    match_score: float
+    error_message: Optional[str] = None
+
+
+@dataclass
+class ValidatedGameOutput:
+    """Kết quả sau khi validate một game"""
+    game_type: str
+    valid_items: List[Dict[str, Any]]
+    invalid_items: List[Dict[str, Any]]
+    validation_results: List[ValidationResult]
+    
+    @property
+    def all_valid(self) -> bool:
+        return len(self.invalid_items) == 0
+    
+    @property
+    def validity_rate(self) -> float:
+        total = len(self.valid_items) + len(self.invalid_items)
+        return len(self.valid_items) / total if total > 0 else 0.0
+
+
+class QuoteValidator:
+    """
+    Validator kiểm tra original_quote có thực sự nằm trong văn bản gốc
+    Sử dụng nhiều chiến lược matching: exact, fuzzy, substring
+    
+    KHÔNG GỌI API - hoàn toàn Python-based
+    """
+    
+    def __init__(
+        self, 
+        fuzzy_threshold: float = 0.85,
+        min_quote_length: int = 10,
+        normalize_whitespace: bool = True
+    ):
+        self.fuzzy_threshold = fuzzy_threshold
+        self.min_quote_length = min_quote_length
+        self.normalize_whitespace = normalize_whitespace
+    
+    def _normalize_text(self, text: str) -> str:
+        """Chuẩn hóa text để so sánh"""
+        if not text:
+            return ""
+        
+        text = unicodedata.normalize('NFC', text)
+        text = text.lower()
+        
+        if self.normalize_whitespace:
+            text = re.sub(r'\s+', ' ', text).strip()
+        
+        return text
+    
+    def _exact_match(self, quote: str, source: str) -> bool:
+        """Kiểm tra quote có nằm chính xác trong source không"""
+        return self._normalize_text(quote) in self._normalize_text(source)
+    
+    def _fuzzy_match(self, quote: str, source: str) -> float:
+        """Tìm đoạn giống nhất trong source và trả về similarity score"""
+        norm_quote = self._normalize_text(quote)
+        norm_source = self._normalize_text(source)
+        
+        if not norm_quote or not norm_source:
+            return 0.0
+        
+        if len(norm_quote) > len(norm_source):
+            return 0.0
+        
+        best_score = 0.0
+        quote_len = len(norm_quote)
+        
+        window_sizes = [
+            quote_len,
+            int(quote_len * 0.9),
+            int(quote_len * 1.1),
+        ]
+        
+        for window_size in window_sizes:
+            if window_size <= 0 or window_size > len(norm_source):
+                continue
+                
+            for i in range(len(norm_source) - window_size + 1):
+                window = norm_source[i:i + window_size]
+                score = SequenceMatcher(None, norm_quote, window).ratio()
+                best_score = max(best_score, score)
+                
+                if best_score >= self.fuzzy_threshold:
+                    return best_score
+        
+        return best_score
+    
+    def validate_quote(
+        self, 
+        original_quote: str, 
+        source_text: str,
+        item_index: int = 0
+    ) -> ValidationResult:
+        """Validate một original_quote against source_text"""
+        
+        if not original_quote:
+            return ValidationResult(
+                item_index=item_index,
+                is_valid=False,
+                original_quote=original_quote or "",
+                match_found=False,
+                match_score=0.0,
+                error_message="original_quote is empty"
+            )
+        
+        if len(original_quote) < self.min_quote_length:
+            return ValidationResult(
+                item_index=item_index,
+                is_valid=False,
+                original_quote=original_quote,
+                match_found=False,
+                match_score=0.0,
+                error_message=f"quote too short (min: {self.min_quote_length})"
+            )
+        
+        # Strategy 1: Exact match
+        if self._exact_match(original_quote, source_text):
+            return ValidationResult(
+                item_index=item_index,
+                is_valid=True,
+                original_quote=original_quote,
+                match_found=True,
+                match_score=1.0,
+                error_message=None
+            )
+        
+        # Strategy 2: Fuzzy match
+        fuzzy_score = self._fuzzy_match(original_quote, source_text)
+        if fuzzy_score >= self.fuzzy_threshold:
+            return ValidationResult(
+                item_index=item_index,
+                is_valid=True,
+                original_quote=original_quote,
+                match_found=True,
+                match_score=fuzzy_score,
+                error_message=None
+            )
+        
+        return ValidationResult(
+            item_index=item_index,
+            is_valid=False,
+            original_quote=original_quote,
+            match_found=False,
+            match_score=fuzzy_score,
+            error_message=f"Quote not found. Score: {fuzzy_score:.2f}"
+        )
+    
+    def validate_game_output(
+        self, 
+        game_type: str,
+        items: List[Dict[str, Any]], 
+        source_text: str
+    ) -> ValidatedGameOutput:
+        """Validate tất cả items trong một game output"""
+        valid_items = []
+        invalid_items = []
+        validation_results = []
+        
+        for i, item in enumerate(items):
+            original_quote = item.get("original_quote", "")
+            result = self.validate_quote(original_quote, source_text, i)
+            validation_results.append(result)
+            
+            if result.is_valid:
+                valid_items.append(item)
+            else:
+                item["_validation_error"] = result.error_message
+                invalid_items.append(item)
+        
+        return ValidatedGameOutput(
+            game_type=game_type,
+            valid_items=valid_items,
+            invalid_items=invalid_items,
+            validation_results=validation_results
+        )
+
+
+def quick_validate(original_quote: str, source_text: str, threshold: float = 0.85) -> bool:
+    """Hàm tiện ích validate nhanh"""
+    validator = QuoteValidator(fuzzy_threshold=threshold)
+    result = validator.validate_quote(original_quote, source_text)
+    return result.is_valid