In the game, marbles of different colors roll down a spiral path towards a central goal, which the player must stop by shooting new marbles using a cannon into the oncoming ones. The marbles disappear if player matches three or more marbles of the same color. In addition, collecting bonus items attached to marbles can, for example, temporarily slow down the rate the marbles advance or cause all marbles of the same color to disappear. The game is over once the marbles are pushed over the goal threshold.