How to play: Aim with your mouse or finger. Click/tap to fire a bubble. Match 3 or more of the same color to pop them. Clear the board to advance levels. If bubbles reach the red line, it's game over! The ceiling drops a row after a few shots without a pop: 6 at first, down to 3. From level 5 it also drops on a timer that gets shorter every level, and each level is worth 25% more points.