Cheat menu:
Enter CHEATONX as a password, then press Select during game play to display the cheat menu. Press Up or Down to select a level or Left or Right to select a zone. Press A for invincibility (001 will appear to confirm correct entry)

Classic Asteroids mini-game:
Enter QRTREATR as a password.

Excalibur ship:
Enter PROJECTX as a password.

2	SPACEVAC
3	STARSBRN
4	WORMSIGN
5	INCOMING