All cheats:
Enter the code PNYRCADE.

Invulnerability:
Enter the code QUENTIN.

Disable displays:
Enter the code NOHUD.

More camera views:
Enter the code DIRECTOR.

Reverse controls:
Enter the code JARJAR.

Programmer message:
Enter the code MAGGIE.

Z-95 Headhunter ship:
Enter the code HEADHUNT.

Thanks to Revolution readers HybridThry, code boy, aj jackson, SuperFly, jordan, JAKE, Kdubbs69, Vinnie188, and Xavier Flynn!