Duke Nukem: Zero Hour Cheats For Nintendo 64

1. Regain Health

   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.

   Contributed by: Vegetaman 

2. 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.

   Contributed by: Reaper 

3. 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.

   Contributed by: Reaper 

4. 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
   

   Contributed by: unodos12345 

5. Codes

   On the title screen, enter the following:

   Effect	Effect
   Down, Down, A, Z, Z, Left, A	Action Nukem Mode
   Down, A, Up, L, Z, R, Top-C, Bottom-C, B, Left-C	All weapons
   Top-C, Left-C, Z, B, L, Z, A	Big gun mode
   B, Up, Down, Down, A, Z, A, Right	Big head mode
   A,L,R,LEFT,B,DOWN,UP	Enforcer,Enforcer Captain & Battle Enforcer
   RIGHT,B,LEFT,L,A,Z	Evil Duke,Custer,Ripper,& X-Terminator
   Down, Up, L, Z, Top-C, Right-C, Left-C, and Z	First Person View
   Down, Up, Left, Left, A, Right, Down	Flat shade map
   Down, Up, A, L, R, Z	Freeze Thrower and unlimited ammo
   A, A, Z, A, R, Bottom-C, B	High speed zombies
   B, Z, Up, L, A, Right-C, A	Ice skin
   UP,DOWN,B,A,A,LEFT	Marine & Sergeant
   B,B,B,R,LEFT,A	Marshall,Sheriff,Squaw,Survivor,& Kimberly Strokes
   d-down, d-up, A, L, R and Z	Odd Gun with Unlimited Ammo
   B,A,A,R,L	Pig Cop,Riot Pig,Road Hog,War Pig,Cowboy Grunt,Savage Grunt,Soldier grunt,& Capitalist Pig
   L,L,UP,DOWN,R,B,A	Posh Duke,Battle Dress Duke,& Dogtag Duke
   top C, bottom C, left C, right C, L, and R	Rifle with Unlimited Ammo
   d-up, d-down, d-left, d-right,L and R	Shotgun With Unlimited Ammo
   Left-C, R, Left, Up, Down, B, A, Z	Skin select
   Z, A, L, B, Down, Up, R	Weather

   Contributed by: KasketDarkfyre, freakunique, Mr Xenomorph, ElementalKnight, nearperfectgamer 

6. 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.

   Unlockable	Unlockable
   Kill every enemy on the Nuclear Winter level.	Big Gun Mode
   Nab all babes on the Liberty or Death Level.	Big Head Mode
   Kill everybody on the Dry Town level.	Fast Zombies
   Complete the Zero Hour level.	First-Person & Action Nukem Mode
   Get all Secrets on the Wetworld level.	Flat Shading
   Get all of the babes in the Fallout level.	Ice skins (enemies, Duke & breakable objects).
   Get 100 % overall rating on every level.	Select Skin
   Get all of the babes on the Up Ship Creek level.	Unlimited Claw-12 Shotgun
   Kill every enemy on The Brothers Nukem level.	Unlimited Freezethrower
   Save all the babes on the Ailen Mother level.	Unlimited Gamma Cannon
   Get all kills on Hydrogen Bomb level *[in order to use, you have to start a new game.]	Unlimited Gattling Gun
   Get all of the babes in the Fort Roswell.	Unlimited Lever Action .30-30 Rifle
   Get all kills on the Jail Break Level.	Unlimited M-80 Blaster
   Get all secrets on Dawn of the Duke.	Unlimited MP-10 SMG
   Kill everything on the Whitechapel Killings level.	Unlimited Sawed-Off Shotgun
   Get all of the babes on Going Down.	Unlimited Sniper Rifle
   Get all of the secrets in The Rack level.	Unlimited Volt Cannon
   Get all of the Time Machine Parts in the levels (except boss levels & from The Rack level to the last boss level).	Unlock Going Down Secret Level
   Get all kills on Under Seige.	Weather

   Contributed by: Duke_Plisskin 

Walkthroughs & FAQs