Destroy all of the blocks before they reach the bottom in each level. Just aim and shoot strategically to hit blocks the required amount of times to destroy them. 20 levels to complete.
Each block has a number on it indicating how many times it needs to be hit before it goes away. Aim and shoot the stream of balls strategically to keep the blocks from reaching the line at the bottom of the screen. Hit the stationary ball power-ups located on the screen to increase the number of balls available to shoot. The number in the round circle at the bottom of the screen indicates how many balls there are to shoot.
Controls: Hold left mouse button down and move mouse to aim. Release mouse button to fire. Touch controls are the same except you need to hold your finger down and move to aim and release touch to fire.
Press the down arrow icon to bring all of the bouncing balls down so you can fire again. This is useful when you have one lone ball bouncing around that isn't hitting anything.