PopBubble is a classic Bubble Shooter elimination game. Players shoot colored bubbles from the bottom of the screen toward the top, aiming to group **3 or more same-colored bubbles** together to pop them. The goal is to clear all bubbles in the current level.
### 2. Basic Controls
1. **Aim & Shoot**: Press and drag on the bottom of the screen to adjust your aim angle (a guide line will be shown). Release your finger to fire the bubble.
2. **Wall Bounce**: Bubbles bounce off the left and right walls. Use ricochets to reach bubbles that are hard to hit directly.
3. **Switch Color**: Tap the switch button next to the launcher to change the current bubble's color, helping you match hard-to-reach areas.
4. **Pause**: Tap the pause button at the top to pause the game. From the pause panel, you can toggle music and sound effects independently.
### 3. Core Mechanics
- **Color Matching**: When a fired bubble hits the ceiling or an existing bubble, it locks into place. If **3 or more same-colored bubbles** become adjacent, they are popped.
- **Hanging Drop**: After popping, any bubbles disconnected from the ceiling will fall. Falling bubbles grant bonus points.
- **Combo System**: Each successful elimination increases the combo counter. The higher the combo, the more points per bubble. If a shot results in no elimination, the combo resets to 0.
- **Running Out of Bubbles**: If you exhaust all allocated bubbles before clearing the level, the game ends in failure.
### 4. Special Power-ups
Special items unlock starting from **Level 3**. There are 4 types:
| Power-up | Icon | Effect |
|----------|------|--------|
| **Bomb** | 💣 | Destroys the target bubble **and all 6 adjacent** bubbles around it |
| **Laser** | 🔫 | Pierces in a straight line, eliminating **every bubble in its path** |
| **Rainbow Ball** | 🌈 | A wild card that matches **any color**; pops all connected same-colored bubbles around the target |
| **Lightning** | ⚡ | Eliminates **an entire row** of bubbles at the target position |
> Each power-up starts with 1 free charge. Once depleted, you can buy more for 100 coins each, or watch an ad if you run out of coins.
### 5. Scoring
- **Pop Score**: `Combo × 10` (per bubble popped)
- **Drop Score**: `Combo × 2 × 10` (per bubble that falls)
- **Perfect Score**: Total initial bubbles in the level × 40
### 6. Star Rating
Each level awards 1–3 stars based on your final score:
| Stars | Requirement |
|-------|-------------|
| ⭐⭐⭐ 3 Stars | Score ≥ 100% of Perfect Score |
| ⭐⭐ 2 Stars | Score ≥ 70% of Perfect Score |
| ⭐ 1 Star | Score ≥ 20% of Perfect Score |
### 7. Rewards & Economy
- **Daily Check-in**: Available from Level 8 onwards. A 7-day repeating check-in system rewards you with power-ups or coins. Watch an ad to **double** your reward.
- **Online Reward**: Claim a random power-up + 80 coins every **120 seconds** of playtime.
- **Coin Shop**: Earn coins by watching ads. Spend 100 coins to purchase any power-up.
- **Revival on Failure**: When you run out of bubbles, watch a video ad to receive **5 extra bubbles** and continue playing.
### 8. Levels & Difficulty
- The game features **32 predefined levels**. Higher level numbers mean greater difficulty.
- Special obstacle bubbles may appear:
- **Rock Balls** (value 7): Cannot be popped; you must shoot around them.
- **Ice Balls** (value 6): Require **two hits** to be fully eliminated.