Press 1 to start a 1-Player game
Press 2 to start a 2-Player game
For Two Energy Centers for the game, press 1 or 2 player start button once.
For Five Energy Centers for the game, press 1 or 2 player start button twice.
Plunger Key activates Z-Bomb, extra z-bomb awarded every 40,000 points
KeyUpperLeft and KeyUpperRight are both fire buttons, both do the same thing, fire one ball
Use flippers to rotate cannon.
For High Score, The LEFT Fire Button scrolls letters Z to A
The Right Fire Button scrolls letters A to Z
The Plunger Key locks in the current letter (Z-Bomb Key)
Some machines were modified in real life for AutoFire - to toggle AutoFire, press Q.