DropCount is a faithful recreation of the classic Drop7 puzzle game for Android, built with Kotlin and Jetpack Compose.<br> <br> <b>Core Gameplay</b><br> <ul> <li>7×7 Grid: Classic Drop7 gameplay with numbered and solid discs</li> <li>Matches: Destroy discs by creating lengths of discs matching the disc numbers</li> <li>Chain Reactions: Create cascading combos for higher scores</li> <li>Dynamic Difficulty: New rows appear from the bottom based on game mode</li> </ul> <br> <b>Game Modes</b><br> <br> 1. Normal Mode<br> <ul> <li>New row every 30 drops, then 29, 28, 27... (decreasing)</li> </ul> <br> 2. Challenge Mode<br> <ul> <li>Configurable difficulty presets: Easy, Medium, Hard, Extreme</li> <li>Fixed drop rate for fixed challenge</li> </ul> <br> 3. Sequence Mode<br> <ul> <li>Same rules as Normal mode</li> <li>Deterministic disc generation for puzzle-solving</li> <li>Predictable sequences for strategic planning</li> </ul> <br> <b>Features</b><br> <ul> <li>High Score Tracking: Per-mode high score persistence</li> <li>Beautiful UI: Modern Material 3 design with gradient backgrounds</li> <li>Animations: Smooth disc drops and break effects</li> <li>Pause/Resume: Pause the game anytime</li> </ul> <br> <b>How to Play</b><br> 1. Tap a column to drop the current disc<br> 2. Match numbers: A disc breaks when contiguous discs in its row OR column equal its number<br> 3. Chain reactions: Breaking discs can trigger more breaks for bonus points<br> 4. Solid discs: Appear solid gray, crack once after first adjacent break, reveal a number after second adjacent break<br> 5. Survive: Avoid filling the past the top row<br> <br> DropCount is completely free and open source, with no ads or in-app purchases.