Aim and shoot the bubbles to form clusters of three or more of the same color. The larger the cluster, the higher your score. If the bubbles do not connect when you fire, you receive a strike. After accumulating several strikes, a new row of bubbles will appear. The game ends if the bubbles reach the bottom of the screen.
*On a computer:* Use your mouse pointer and left-click to aim and shoot.
*On a mobile device:* Tap on the screen to aim and fire.