Unlimited lives: Press 2 at the main menu to reconfigure the
key commands. Then, press Z, Y, E, S
(Left, Right, Fire, Fire) followed by 4 (Joystick). Then,
press 1 to start game play.
Unlimited lives (alternate): Press 2 at the main menu to reconfigure the
key commands. Then, press Y, X, E, S
(Left, Right, Up, Fire) followed by 4 (Joystick). Then,
press 1 to start game play.
Unlimited lives (alternate): Load or reset the game, then execute the following
BASIC command before running or restarting the program.
