Type these in during the race:
DRUB    - No-damage
DREAD   - Unlimited ammo
DRAG    - Unlimited turbo
DRINK   - Rocketfuel
DRUG    - Mushroom effect

Type these while at the menu:
DROOL   - Get $500000
DRAW    - Get $1000
DROP    - Drop 10 points
DRIVE   - Get 10 points  (Full version only)

Enter your name as Duke Nukem to get armor equal to
what Duke Nukem has in the game.