Core Gameplay: Water drop upgrades & explosions;
(1) Tap water drops to "upgrade" them (4 levels total). When reaching max level (circle), tap once more to explode into 4 splashing drops flying in 4 directions.
(2) Splashing drops hitting other drops upgrade them or trigger explosions, creating chain reactions to eliminate multiple drops at once.

Key Strategy: Prioritize explosions in center area (6×6 grid center) for 4-direction splash efficiency vs corner spots with only 2-3 directions.
Goal: Clear all drops in the level to win.
Features: Physics-based chain reactions with realistic splash trajectories. Strategic planning creates "domino effect" eliminations.
999 Levels: Progressive difficulty, one-finger tap controls, learn in 3 seconds