50: Critical mass - rotate the circle in the center of the screen and catch different circles with it. Try to collect same color circles in groups. Train your reaction speed and set records in this Android game. Groups of 5 same circles will explode and give you points. Your task will gradually become more difficult, new colors begin appearing and the speed increases. The game will end when the central circle has 50 circles of different colors on it.

Operating System: Android Gingerbread (2.3) or later