Use your cube shooting gun to make your blocks blow up! At the beginning of each level, there are a number of blocks at the bottom of the screen. Your block shooting gun is at the top of the screen. The color of the circle is the color of the next block it will shoot. Move your mouse to aim the gun and click to shoot it. When you connect blocks of the same color, they will disappear. You want to completely clear the screen of blocks. The gun will move down periodically. If it hits your blocks before they disappear, you lose the level.