Switching on and off several switches, you can control the power of laser guns at the bottom. Balls are falling continuously from the top. There are two rails one at the top and one at bottom. If the balls collides with any rail, it will explode and you lose one chance. Level keeps on increasing as the game progress and becomes challenging to balance all randomly coming balls at once. Every ball has a count associated with it. With every collision, count decreases, if it reaches to zero, the ball will disappear.