Cheat codesEnter the following cheats at the title screen.
ENGLISH VERSION (PAL)
Activate cheats = Left, Down, L, L, Up, Right, Left, Up
God Mode = R, Right-C, R, L, R, R, R, Left
No monsters = L, Up-C, Left, L, Down-C, Right, Left, Right
All items = R, Right-C, Down, L, Up-C, Left, Right-C, Left
Level select = R, L, R, Down-C, Right, Up, Left, Up-C
All cheats = Up-C, Up, Left-C, Right, Down-C, Down, Right-C, R
FRENCH VERSION (PAL)
Activate cheats = Left, Down, L, L, Up, Right, Left-C, Up-C
God Mode = L, R, R, L, R, R, R, Left
No monsters = L, Up-C, Left, L, Down-C, R, Left, Right-C
All items = L, Left, Down, L, Up-C, Left, R, Left
Level select = L, R, R, Down-C, Right, Up-C, Left, Up
All cheats = Up, Up-C, Left-C, Right-C, Down-C, Down-C, Right-C, Right-C
ENGLISH VERSION (NTSC)
Activate cheats = Left, Left, L, L, Right, Right, Left, Left
God Mode = R, R, R, R, R, R, R, Left
No monsters = L, Left-C, Left, R, Right-C, Right, Left, Left
All items = R, Right-C, Right, L, Left-C, Left, Right-C, Right
Level select = L, L, L, Right-C, Right, Left, Left, Left-C
All cheats = Up, Up-C, Left, Right-C, Down, Down-C, Right, Left-C
JAPANESE VERSION (NTSC)
Activate cheats = L, L, L, L, Right, Right, Left, Left
God Mode = L, L, L, L, L, L, L, Down-C
No monsters = Left-C, Left, Right, Right-C, Left-C, R, Left-C, L
All items = R, Right, Right-C, Left-C, L, Left-C, Right, Up
Level select = L, Down-C, Up, R, Right, Left-C, Left-C, L
All cheats = Up, Down-C, Right, Left-C, Down, Up-C, Right-C, Left
The all cheats code will turn all cheats OFF if any cheats are on at the time.
Go to the cheat menu. Then hit the following buttons in order: L, LEFT C, LEFT, R, RIGHT C, RIGHT, LEFT, LEFT, RIGHT. You will hear a siren if you did the code correctly. Then go to the Cheat Menu and you can now turn the monsters on and off.
There is a way to play big or small in Duke Nukem. This code will work on co-op or deathmatch. To use this code in co-op you need Invincibility and items codes. Turn on friendly fire then use the weapons code. Shoot your buddy with the shrinker or expander. Small Duke: Shoot, put on invincibility then turn it off again. The player will not grow back (the drawback is that you can't have any weapons).
Big Duke: Get the expander (with God Mode off) and shoot the other Duke until he starts to expand. Just before he explodes put on God Mode, stop shooting, then turn off God Mode. You now have a giant duke that still can be killed. You may have to try it a few times to get it right.
To get the invincibility code players must first enter the cheat menu code (press the following at the main menu to access the hidden cheat menu: LEFT, LEFT, L, L, RIGHT, RIGHT, LEFT, LEFT - the cheat menu should now be accessible). Then simply hit R button seven times in a row and then press left on the directional pad. A sound should signify that it worked. Now go into the cheat menu and turn invincibility on.
To safely walk on lava for an infinite amount of time press the jump button enough so that your feet aren't on the ground for more than a second. Keep it up and you can stay in lava without protection for as long as you want.
In Deathmatch, any weapon can be thrown into a teleporter to have it appear on the other end. Bullets, missles, grenades, plasma, it all goes through. You have to wait for the item to completly pass before you can throw in another, ie - rapid fire bullets will not go through. This is great for dropping gifts in for your opponents while you stay safe. Just be careful not to stand on a teleporter for too long, because if someone else steps on it, you'll get telefragged.
Turn Items On
Perform the code to access the cheat menu (from main menu: LEFT, LEFT, L, L, RIGHT, RIGHT, LEFT, LEFT).
Now at the main menu input: R, Right C, RIGHT, L, Left C, LEFT, Right C, RIGHT. This will enable all items to be toggled on or off.
Duke Nukem 64 Cheat Menu
Press the following at the main menu to access the hidden cheat menu: LEFT, LEFT, L, L, RIGHT, RIGHT, LEFT, LEFT. Now the cheat menu will be accessible.
Fountain of Youth
It's always fun to blow stuff up right? Well now you can have fun and get power at the same time. First, the fun part - shoot or blow up a water fountain, fire hydrant or even a toilet. Then walk over to the water that's squirting up and hold "A" - you will gradually regain your energy.
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