Todays Hot Cheat - Duke Nukem

Cheat Menu On the Title Screen, press Left, Left, L Button, L Button, Right, Right, Left, Left.
All Items
On the Title screen, press R Button, Right C, Right, L Button, Left C, Left, Right C, Right.
No Monsters
This code turns the monsters on or off in the Levels. To access this code, first enter the Cheat Menu code. Stay on the Title screen, and press the L Button, Left C, Left, R Button, Right C, Right, Left, Left.
Invincibility
This code only lets you die if you are severly injured. To enter the code, first enter the Cheat Menu code. Stay on the Title screen and press the R Button 7 times, then Left on the Control Pad.

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