To get a shotgun with Unlimited ammo press d-up, d-down, d-left, d-right,L and R on the opening screen.
12/31/2000
Odd gun with Unlimited Ammo
To get this odd gun with unlimited icy blue ammo press d-down, d-up, A, L, R and Z on the opening screen.
12/31/2000
Rifle with Unlimited Ammo
To get a rifle with unlimited ammo press top C, bottom C, left C, right C, L, and R.
2/4/2001
Debug Mode
This code will enable you to do all kinds of codes such as invincibility and all weapons. At the Press Start Screen, press C-Up, Up, C-Left, Right, C-Down, Down, C-Right, R, A, B. If you entered the code correctly, you'll hear a horse neigh. When you start a normal game a Debug menu will show up at the top-left corner of the screen. Press Start on controller 2 to cycle through the Debug menu's. Press the following buttons on controller 2 to activate these cheats at the appropriate menu:
SFX
L or R: FX down/up Left or Right: FX down/up by 10 B: First person view A: Third person view Z: Play SFX Level Warp
L or R: Level down/up B: Skip level Z: Advance to selected level Midi
L or R: Song down/up A: Play song B: Stop song Global Palette B or A: Red down/up C-Left or C-Down: Green down/up C-Up or C-Right: Blue down/up Cheat
Z: All weapons L: All items R: All keys A: Invincibility AI Debug Values B or A: GVAR 1 down/up C-Left or C-Down: GVAR 2 down/up C-Up or C-Right: GVAR 3 down/up Fog
B or A: Red down/up C-Left or C-Down: Green down/up C-Up or C-Right: Blue down/up Left or Right: NR down/up L or R: FR down/up Sky Top
B or A: Red down/up C-Left or C-Down: Green down/up C-Up or C-Right: Blue down/up Sky Bottom
B or A: Red down/up C-Left or C-Down: Green down/up C-Up or C-Right: Blue down/up Clouds 1
B or A: Red down/up C-Left or C-Down: Green down/up C-Up or C-Right: Blue down/up L or R: HT down/up Down or Up: AN down/up Left or Right: SP down/up Clouds 2
B or A: Red down/up C-Left or C-Down: Green down/up C-Up or C-Right: Blue down/up L or R: HT down/up Down or Up: AN down/up Left or Right: SP down/up Player
L or R: DN Down/Up (changes player's character) GFX
(Values cannot be changed) AI
A: AI 0/1 (set to 1 to stop enemies) L: Difficulty 0/1/2 R: Auto aim 0/1 Alpha Palette
B or A: R0 down/up C-Left or C-Down: G0 down/up C-Up or C-Right: B0 down/up L or R: R1 down/up Left or Right: G1 down/up Down or Up: B1 down/up
4/17/2001
First Person
To change Duke's perspective to the first person, on the title screen, enter the following:
Down, Up, L, Z, Top-C, Right-C, Left-C, and Z.
6/13/2001
New View
Enter the following code at the Press Start screen Down - Up - L Button - B - Z - Left - Up C - Right C- Left C - Z
Then when you play the game you will have first person view
12/29/2001
Extra multiplayer characters
Enter these codes at the title screen:
L,L,UP,DOWN,R,B,A = Posh Duke,Battle Dress Duke,& Dogtag Duke
During gameplay, find a fire hydrant or toilet. Destroy it, and stand next to the flowing water coming from its remains. Press the 'B' button, and your health will slowly regenerate, and go back up.
2/28/2005
Get all of the following to unlock weapons, other interesting features & a secret level.
Get maximum amount of the following to unlock the cheats that are descreibed in the following.
Get all kills on Hydrogen Bomb level *[in order to use, you have to start a new game.]
Unlimited M-80 Blaster
Get all kills on the Jail Break Level.
Weather
Get all kills on Under Seige.
Ice skins (enemies, Duke & breakable objects).
Get all of the babes in the Fallout level.
Unlimited Lever Action .30-30 Rifle
Get all of the babes in the Fort Roswell.
Unlimited Sniper Rifle
Get all of the babes on Going Down.
Unlimited Claw-12 Shotgun
Get all of the babes on the Up Ship Creek level.
Unlimited Volt Cannon
Get all of the secrets in The Rack level.
Unlock Going Down Secret Level
Get all of the Time Machine Parts in the levels (except boss levels & from The Rack level to the last boss level).
Unlimited MP-10 SMG
Get all secrets on Dawn of the Duke.
Flat Shading
Get all Secrets on the Wetworld level.
Unlimited Freezethrower
Kill every enemy on The Brothers Nukem level.
Big Gun Mode
Kill every enemy on the Nuclear Winter level.
Fast Zombies
Kill everybody on the Dry Town level.
Unlimited Sawed-Off Shotgun
Kill everything on the Whitechapel Killings level.
Big Head Mode
Nab all babes on the Liberty or Death Level.
Unlimited Gamma Cannon
Save all the babes on the Ailen Mother level.
2/23/2006
Unlock Wetworld
In the third level, Nuclear Winter, you can unlock the hidden level, Wetworld. At the end of the level as you are crossing the raised train tracks, to get to the signal transmtter, if you look down while moving across the tracks, you'll see a medkit on one of the roofs. Jump onto the roof, then jump into the water and swim until you come to the platform and end-level icon.
2/23/2006
Unlock Going Down
To unlock the hidden level, Going Down, obtain all of the time machine pieces before reaching the level, The Rack. After using the cyborg alien's head to unlock the door near the end of the level, there should be a second portal that has a fully built time mahcine in it, and this room should be adjacent to the first portal room. It is possible to replay this level to unlock the hidden level if time machine pieces are missed during a first play-through of the game.
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