Cheats for uke Nukem 3
Useful Cheats (these affect gameplay)
DNCORNHOLIO - God Mode (And Unlimited Jetpack).
DNKROZ - Same as Cornholio, just quicker to type.
DNVIEW - Same as the F7 key in the game. (Also prints the message "You're too good to be cheating")
DNHYPER - Puts you in Steroids Mode.
DNINVENTORY - Gives all inventory items and armor. (Not listed in the official guide.)
DNITEMS - Gives all inventory items and keys.
DNWEAPONS - Gives all weapons and ammo.
DNKEYS - Gives all the keys.
DNSTUFF - Gives all weapons, keys, inventory items.
DNSCOTTYxyz - Level Warp. x is the Episode Number, yz is the level number. (Ex: dnscotty103 for Episode 1 Level 3, or dnscotty211 for Episode 2 Level 11)
DNSKILLx - Changes the difficulty mode to x. (x can be 0 to 3) (0 means no monsters, 1 is a hidden very-easy mode, 2 is Piece of Cake, 3 is Let's Rock, 4 is Come Get Some, 5 is Damn I'm Good; values 6-9 behave just like 5, but don't disable cheats)
DNUNLOCK - Opens all doors and unlocks all locked doors.
DNMONSTERS - Turns off (or on) the monsters in the game. (They disappear as soon as they get active.)
DNCLIP - Walk Through Walls (Tip: open the map to better see where you are.)

Warning: Being in God Mode can crash the game at certain points, depending on what you are doing. Being in God mode when you are squashed by rotating gears is one example.

Warning 2: The DNCLIP code can be very dangerous. It can cause crashes at any time. If you have a problem, and have used DNCLIP, restart, and do not use DNCLIP, and see if it happens. This was the main reason we didn't have a DNCLIP in v1.0.
Cute Cheats (they do something, but don't affect the game)
DNSHOWMAP - Shows the entire map.
DNCASHMAN - Spews money everywhere when you press space the use key.
DNCOORDS - Shows extremely detailed map coordinate/level information.
DNDEBUG - Shows some debug information.
DNRATE - Shows your frame rate onscreen. You must be in full screen mode for this to be anywhere near accurate.
DNBETA - Prints the message "Pirates Suck!"
DNALLEN - Prints the message "Buy Major Stryker"
DNTODD - Prints the message "Register Cosmo Today!"