Hidden surprise:
Enter computer mode and type an obscenity.
Unlimited missiles:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 18590,173
Unlimited ammunition:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 15335,173
Unlimited flares:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 15173,173
