Keep the shapes from stacking all the way down to the bottom of the screen! At the bottom of the game, you'll see a colored circle. This shows you which color you will shoot out next. Shapes come flying up from the bottom of the screen. Once they hit other shapes, they will fill in with green, yellow, or blue. You have to shoot colored balls at shapes of the same color to make them disappear. If it bounces off and hits other shapes of the same color, they will disappear too. Once the blocks fill in the whole screen, you lose the game.