Keep at least one ball in the air. Shoot the balls to split them. In the default settings the balls fall quickly so reduce their descent rate them by reducing the Gravity setting.
Gravity
Decreasing this value will slow the descent of the balls and give the player more time to react.
Playing By Mouse
Move your mouse left and right to move the spaceship. Click the mouse to fire.
Playing By Keyboard
Press a cursor (arrow) key to move the spaceship. Press Spacebar to fire.
Playing By Single Switch (or Single Key or Mouse Click)
In scanning mode the ship will move from left to right automatically, press the Spacebar or Click the Mouse to fire. If you are playing using Single Switch you will need to reduce the gravity to allow time for the ship to move across the playing area.
NOTE: If you choose "Mouse Click Only (Scanning)" then a large green button will be displayed below the Game Menu and below the Game. Your mouse cursor must be positioned over the large green button while scanning for the mouse/switch clicks to be detected.