Press C during game play to display the question window, then enter one of the following case-sensitive codes to activate the corresponding cheat function.

Effect	Code
100% health	pleasehealth
20 rockets to shoot	pleaserockets
5 extra lives	pleaselives
FireFury (multiple shots) bonus	pleasefire
Level skip	pleasenextroom
Previous level	pleaseprevroom
Toggle high speed spaceship movement	pleasespeed
Toggle invincibility	pleasegod