Game Codes - http://maxpages.com/n64codemasters/Duke_Nukem_Zero

Debug Menu
By: MnM4eVa861218 (MnM4EvA861218@aol.com)
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 cheast 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

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Multiplayer Groups
By: kingad83@aol.com

Enter the following codes at the "Press Start" (into) screen to unlock the corresponding multiplayer groups:

A, L, R, Left, B, Down, Up
B, A, A, R, L
L, L, Up, Down, R, B, A
B, B, B, R, Left, A
Right, B, Left, L, A, Z
Up, Down, B, A, A, Left

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Cheat Codes
By: kingad83@aol.com

NOTE: Enter the following codes at the "Press Start" (into) screen:

Freeze Thrower and Infinte Ammo: Down, Up, A, L, R, Z
Rifle and Infinite Ammo: C-Up, C-Down, C-Left, C-Right, L, R
Choose Skins in Single Player (you can't see what skin you a chosing for some reason): C-Left, R, Left, Up, Down, B, A, Z
1st Person View: Down, Up, L, B, Z, Left, C-Up, C-Right, C-Left, Z
Action Nukem (all enemies except the last boss die in one hit): Down, Down, A, Z, Z, Left, A

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Extra Characters in Multiplayer Mode
By: kingad83@aol.com

To get extra characters in the multiplayer mode simply beat any level. Then just quit and select multiplayer. You will find a new character available. These characters start with different weapons and different amounts of health.

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Cheat Options
By: kingad83@aol.com

Cheat Requirement Level Name

Big Heads Rescue all babes in level 2 Liberty or Death
Big Guns Kill all opponents in level 3 Nuclear Winter
Flat Shade Map Obtain all secrets Wetworld (secret level)
Ice Skin Rescue all babes in level 5 Fallout
Weather Obtain all secrets in level 6 Under Siege
High Speed Zombies Rescue all babes in level 8 Dry Town
Maximum Blaster Ammo Kill all opponents in level 9 Jailbreak
Maximum Shotgun Ammo Rescue all babes in level 10 Up Ship Creek
Maximum Rifle Ammo Rescue all babes in level 11 Ft. Roswell
Maximum Revolver Ammo Kill all opponents in level 12 Probing The Depths
Maximum Sawn-off Shotgun Ammo Kill all opponents in level 13 Whitechapel Killings
Maximum SMG Ammo Obtain all secrets in level 15 Dawn Of The Duke.
Maximum Gatling Gun Ammo Kill all opponents in level 16 Hydrogen Bomb
Maximum Volt C. Ammo Obtain all secrets in level 17 The Rack
Maximum Sniper Ammo Rescue all babes Going Down (secret level)
Maximum Freezer Ammo Kill all opponents in level 20 The Brothers Nukem
Maximum Gamma Ammo Rescue all babes in level 21 Alien Mothership

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Regain Your Health
By: Kenny Maning

In Duke Nukem: Zero Hour, you can destory the fire hydrants. When you do, stand next the outpouring water and hold the A button. Your health will be fully restored!

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Hidden Levels
By: Too many people to count

Titanic Level - To access the Titanic level "GOING DOWN" find all the time machine pieces before you get to "THE RACK" and a second exit portal should appear in the room just off the first.

Wetworld Level - To access the "WETWORLD" level play through level 3 'NUCLEAR WINTER' and when you reach the rail tracks leading to the communicator you have to power up drop off onto the roof below where you will see a medi kit. Now jump off this roof into the water (which is only on 1 side) and swim to a floating platform where you will see the level exit.

N64 CODEMASTERS!

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