99 lives
Press [F1] during game to display the in-game menu. Then press [Ctrl] + A + L. Type “325” at the prompt
Invincibility
Press [F1] during game to display the in-game menu. Then press [Ctrl] + A + L. Type “642” at the prompt. (Note: To disable, type “643”.)
Double item value
Press [F1] during game to display the in-game menu. Then press [Ctrl] + A + L. Type “822” at the prompt.
View ending sequence
Press [F1] during game to display the in-game menu. Then press [Ctrl] + A + L. Type “589” at the prompt.
Select level
Press [F1] during game to display the in-game menu. Then press [Ctrl] + A + L. Type “7#” at the prompt, where # is the level you wish to warp to.