Duke Nukem 64
Codes
*Cheat Menu:
Left,Left,L,L,Right,Right,Left,Left
*All Items: R,Right-C,Right,L,Left C,Left,Right-C,Right
*Invincibility: R,R,R,R,R,R,R,Left
*Monsters on/off: L,Left-C,Left,R,Right-C,Right,Left,Left,Right
*Level Warp: L,L,L, Right-C,Right,Left,LeftT,Left-C
Enter all of these codes at the Main Menu screen,
You must first enter the Cheat menu code before you can enter any other code.