DragPlay

Drag Play is a digital merge-elimination game that combines falling blocks with a merge-upgrade mechanic (similar to 2048). Players drag blocks to merge identical numbered blocks together, leveling them up while managing the continuous stream of falling blocks and obstacles.

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### Basic Rules

1. **Board**: An 8×9 grid playing area, each cell is 80×80 pixels.
2. **Falling Blocks**: Blocks continuously fall from the top of the board, 8 blocks at a time, with a countdown timer (every 10 seconds).
3. **Merge & Upgrade**: When two blocks of the same level meet, they automatically merge and level up by 1 (max level: 18).
4. **Drag Controls**: Players can touch and drag a block to an adjacent position to merge it with another block of the same level.
5. **Scoring**: Each merge scores `(merged level - 1) × 2` points.
6. **Game Over**: The game ends when any column is filled to the top of the board.

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### Block Types

| Type | Description |
|------|-------------|
| **Normal Block** | Levels 1~18, colored blocks with level numbers, can be dragged and merged |
| **Iron Block** | Cannot be dragged or automatically eliminated; blocks the board; requires skills to remove |
| **Skill Block** | When tapped, triggers the "Appeal" skill |
| **Gold Block** | Produces extra gold coins when merged |

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### Game Skills (6 types)

| Skill | Effect | Uses per game |
|-------|--------|:------------:|
| ⏳ **Hourglass** | Pauses falling blocks for 5 seconds | 3 |
| 📈 **Level Up** | Randomly boosts 5 blocks by 1 level | 3 |
| 🧲 **Appeal** | Attracts and merges all blocks of the same level | 1 |
| 🔀 **Rebuild** | Randomly shuffles all block levels on the board | 3 |
| 🧹 **Clean Up** | Removes 2 random iron blocks | 3 |
| 🔗 **Relate** | Pairs and merges 5 pairs of same-level blocks | 3 |

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### Pet System

Pets automatically use skills to assist gameplay. As pets level up, skill cooldown decreases and score multiplier increases.

| Pet | Skill | Cooldown | Score Multiplier |
|-----|-------|:--------:|:----------------:|
| 🟢 **Dumpling** | Clean Up | 80s ~ 50s | 2x ~ 13x |
| 🐱 **Claw Cat** | Relate | 300s ~ 210s | 2x ~ 12x |
| 🐻 **Honest Bear** | Rebuild | 420s ~ 330s | 2x ~ 12x |

Pets can reach a maximum level of 10 and are upgraded using gold coins.

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### Lucky Events

- **Chain Merge**: When **4 or more consecutive same-level blocks** appear on the same row, they automatically merge and award an extra **20 points**.
- **Accumulated Merge**: When a single cell has been merged **4 times**, the Relate skill is triggered automatically.

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### Difficulty Progression

The game uses drop count as the stage level, with 9 difficulty stages:

- **Block level range** expands from level 1 to levels 1~8.
- **Iron block probability** increases from 0% to 60%.
- **Gold block probability** increases from 0% to 50%.
- Skill blocks also appear in higher stages.

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### Economy System

- **Gold Coins**: Earned by merging gold blocks, daily check-ins, sharing, etc.
- **Score**: Earned by merging blocks; a highest score record is kept.
- **Usage**: Gold coins are used for pet upgrades and skill item purchases.

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### Daily Check-in

A 7-day check-in reward system, providing daily gold coins and skill items.

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### Game Tips

1. **Prioritize high-level merges**: Higher-level merges yield more points and free up more board space.
2. **Use skills wisely**: Use "Clean Up" when iron blocks pile up; use "Rebuild" when the board gets too crowded.
3. **Watch the timer**: A new batch of blocks drops every 10 seconds — plan your moves ahead.
4. **Leverage lucky events**: Try to line up same-level blocks in a row to trigger chain merges for extra points.
5. **Raise your pets**: Pets provide automatic skill support, a key factor for high scores.
6. **Remove iron blocks early**: Iron blocks can't be moved and won't disappear — the sooner you clear them, the safer your game.