Duke Nukem: Zero Hour

Strategy Guide

  • Debug mode

    When "Press Start" appears at the opening screen, press C-Up, Up, C-Left, Right, C-Down, Down, C-Right, R, A, B. If you entered the code correctly, you will hear a sound. The "Cheats Menu" will be available but will have no cheats active (unless they were previously activated or earned). Once you start or load a game/level, text will appear in the upper/left hand corner of the screen. Use controller two to control the debug options. Press Start to cycle through the various lists of options. Use the buttons noted below to change certain values. Note: Debug mode does not save on the memory pak like the other cheats.

      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

      Weather Cheat works the same way but only has the options noted with an *

  • All weapons

    When "Press Start" appears at the opening screen, press Down, A, Up, L, Z, R, C-Up, C-Down, B, C-Left. If you entered the code correctly, you will hear a sound. -From: mlgold@aasp.net

  • Rifle with infinite ammunition

    When "Press Start" appears at the opening screen, press C-Up, C-Down, C-Left, C-Right, L, R. If you entered the code correctly, you will hear a sound.

  • Freeze Thrower with infinite ammunition

    When "Press Start" appears at the opening screen, press Down, Up, A, L, R, Z. If you entered the code correctly, you will hear a sound. -From: Mbd98@aol.com

  • Group 1 multi-player characters

    When "Press Start" appears at the opening screen, press A, L, R, Left, B, Down, Up to unlock all Group 1 multi-player characters. If you entered the code correctly, you will hear a sound. -From: Mbd98@aol.com

  • Group 2 multi-player characters

    When "Press Start" appears at the opening screen, press B, A(2), R, L to unlock all Group 2 multi-player characters. If you entered the code correctly, you will hear a sound. -From: Mbd98@aol.com

  • Group 3 multi-player characters

    When "Press Start" appears at the opening screen, press L(2), Up, Down, R, B, A to unlock all Group 3 multi-player characters. If you entered the code correctly, you will hear a sound. -From: Mbd98@aol.com

  • Group 4 multi-player characters

    When "Press Start" appears at the opening screen, press B(3), R, Left, A to unlock all Group 4 multi-player characters. If you entered the code correctly, you will hear a sound. -From: Mbd98@aol.com

  • Group 5 multi-player characters

    When "Press Start" appears at the opening screen, press Right, B, Left, L, A, Z to unlock all Group 5 multi-player characters. If you entered the code correctly, you will hear a sound. -From: Mbd98@aol.com

  • Group 6 multi-player characters

    When "Press Start" appears at the opening screen, press Up, Down, B, A(2), Left to unlock all Group 6 multi-player characters. If you entered the code correctly, you will hear a sound. -From: Mbd98@aol.com

  • Skin select

    When "Press Start" appears at the opening screen, press C-Left, R, Left, Up, Down, B, A, Z. If you entered the code correctly, you will hear a sound. Skins may be selected in single player mode, but may not be viewed during selection.

  • First person view

    When "Press Start" appears at the opening screen, press Down, Up, L, B, Z, Left, C-Up, C-Right, C-Left, Z. If you entered the code correctly, you will hear a sound.

  • Action Nuk'em mode

    When "Press Start" appears at the opening screen, press Down(2), A, Z(2), Left, A. If you entered the code correctly, you will hear a sound. Alternatively, successfully complete the game to unlock Action Nuk'em mode, which allows Duke to kill opponents with one shot. -From: Mbd98@aol.com

  • High speed zombies

    When "Press Start" appears at the opening screen, press A(2), Z, A, R, C-Down, B. If you entered the code correctly, you will hear a sound. Alternately, rescue all babes in level 8, "Dry Town", to unlock the cheat option for high speed zombies. -From: mlgold@aasp.net

  • Big head mode

    When "Press Start" appears at the opening screen, press B, Up, Down(2), A, Z, A, Right. If you entered the code correctly, you will hear a sound. Alternately, rescue all babes in level 2, "Liberty Or Death", to unlock the cheat option for big head mode. -From: mlgold@aasp.net

  • Big gun mode

    When "Press Start" appears at the opening screen, press C-Up, C-Left, Z, B, L, Z, A. If you entered the code correctly, you will hear a sound. Alternately, kill all opponents in level 3, "Nuclear Winter", to unlock the cheat option for big gun mode. -From: mlgold@aasp.net

  • Flat shade map

    When "Press Start" appears at the opening screen, press Down, Up, Left(2), A, Right, Down. If you entered the code correctly, you will hear a sound. Alternately, obtain all secrets in the "Wetworld" secret level to unlock the cheat option for flat shade map. -From: mlgold@aasp.net

  • Ice skin

    When "Press Start" appears at the opening screen, press B, Z, Up, L, A, C-Right, A. If you entered the code correctly, you will hear a sound. Alternately, rescue all babes in level 5, "Fallout", to unlock the cheat option for ice skin.

  • Weather

    When "Press Start" appears at the opening screen, press Z, A, L, B, Down, Up, R. If you entered the code correctly, you will hear a sound. Alternately, obtain all secrets in level 6, "Under Siege", to unlock the cheat option for weather. -From: mlgold@aasp.net

  • Extreme mode

    Successfully complete the game with all babes rescued and all opponents killed to unlock Extreme mode, which allows the game to be played at a higher difficulty setting.

  • Bonus multi-player characters

    Successfully complete any level and save the game to unlock one additional character in multi-player mode.

  • Maximum blaster ammunition

    Kill all opponents in level 9, "Jailbreak", to unlock the cheat option for maximum blaster ammunition.

  • Maximum shotgun ammunition

    Rescue all babes in level 10, "Up Ship Creek", to unlock the cheat option for maximum shotgun ammunition.

  • Maximum rifle ammunition

    Rescue all babes in level 11, "Ft. Roswell", to unlock the cheat option for maximum rifle ammunition.

  • Maximum revolver ammunition

    Kill all opponents in level 12, "Probing The Depths", to unlock the cheat option for maximum revolver ammunition.

  • Maximum sawn-off shotgun ammunition

    Kill all opponents in level 13, "Whitechapel Killings", to unlock the cheat option for maximum sawn-off shotgun ammunition.

  • Maximum SMG ammunition

    Obtain all secrets in level 15, "Dawn Of The Duke", to unlock the cheat option for maximum SMG ammunition.

  • Maximum gatling gun ammunition

    Kill all opponents in level 16, "Hydrogen Bomb", to unlock the cheat option for maximum gatling gun ammunition.

  • Maximum Volt C. ammunition

    Obtain all secrets in level 17, "The Rack", to unlock the cheat option for maximum Volt C. ammunition.

  • Maximum sniper ammunition

    Rescue all babes in the "Going Down" secret level to unlock the cheat option for maximum sniper ammunition.

  • Maximum freezer ammunition

    Kill all opponents in level 20, "The Brothers Nukem", to unlock the cheat option for maximum freezer ammunition.

  • Maximum gamma ammunition

    Rescue all babes in level 21, "Alien Mothership", to unlock the cheat option for maximum gamma ammunition.

  • Wetworld level

    Play through the "Nuclear Winter" level until reaching the rail tracks leading to the communicator. Then, power up and drop off onto the roof below where a medi-kit can be seen. Jump off this roof into the water (which is only on one side). Swim to a floating platform, where the level exit will appear.

  • Going Down level

    Collect all the time machine pieces before reaching "The Rack" level. Then a second exit portal will appear in the room just off where the first is located. Use it to reach the "Going Down" (Titanic) level.

  • Refill health

    Destroy a fire hydrant, or another water source. Then, stand in the water and hold A to slowly restore health. Alternatively, stand in front of a toilet or urinal and press A.


    Game Shark Codes

    Note: You must have a 2.2 or higher version of the Game Shark to use these codes.

    Infinite Health (Mean Streets)8019F061 0096
    Infinite Health (Liberty or Death)8019E955 0096
    Infinite Health (Nuclear Winter)8019E4D9 0096
    Infinite Health (Secret Level: Wetworld)8019DA99 0096
    Infinite Health (Fallout)8019D61D 0096
    Infinite Health (Under Siege)8019E4D9 0096
    Infinite Health (Boss Hog)8019BF0D 0096
    Infinite Health (Dry Town)8019FB45 0096
    Infinite Health (Jailbreak)8019E1A5 0096
    Infinite Health (Up Ship Creek)8019E391 0096
    Infinite Health (Fort Roswell)8019F395 0096
    Infinite Health (Probing The Depths)8019E05D 0096
    Infinite Health (Cyborg Scorpion)8019C055 0096
    Infinite Health (The Whitechapel Killings)8019F1A9 0096
    Infinite Health (Dawn of the Duke)8019F625 0096
    Infinite Health (Hydrogen Bomb)8019E2ED 0096
    Infinite Health (Dunroamin Castle)8019DB3D 0096
    Infinite Health (Going Down)8019C0F9 0096
    Infinite Health (Brainstorm)8019C94D 0096
    Infinite Health (The Brothers Nukem)8019D579 0096
    Infinire Health (Alien Mother)8019BC7D 0096
    Have Pistol8111A6A8 0001
    Infinite Pistol Ammo8111A6AA 0063
    8111A6B0 0000
    Pistol Never Needs to Reload8111A6B2 0000
    Have Shotgun8111A6D0 0001
    Infinite Shotgun Ammo8111A6D2 0063
    8111A6D8 0000
    Shotgun Never Needs to Reload8111A6DA 0000
    Have Machine Gun8111A6F8 0001
    Infinite Machine Gun Ammo8111A6FA 0063
    8111A700 0000
    Machine Gun Never Needs to Reload8111A702 0000
    Have Grenade Launcher8111A720 0001
    Infinite Grenade Launcher Ammo8111A722 0063
    8111A728 0000
    Grenade Launcher Never Needs to Reload8111A72A 0000
    Have Pipe Bomb8111A748 0001
    Infinite Pipe Bomb Ammo8111A74A 0063
    8111A750 0000
    Pipe Bomb Never Needs to Reload8111A752 0000
    Have Dynamite8111A770 0001
    Infinite Dynamite Ammo8111A772 0063
    8111A778 0000
    Dynamite Never Needs to Reload8111A77A 0000
    Have ?8111A798 0001
    Infinite ? Ammo8111A79A 0063
    8111A7A0 0000
    ? Never Needs to Reload8111A7A2 0000
    Have Machine Shotgun8111A7C0 0001
    Infinite Machine Shotgun Ammo8111A7C2 0063
    8111A7C8 0000
    Machine Shotgun Never Needs to Reload8111A7CA 0000
    Have Plasma Gun8111A7E8 0001
    Infinite Plasma Gun Ammo8111A7EA 0063
    8111A7F0 0000
    Plasma Gun Never Needs to Reload8111A7F2 0000
    Have Lasergun8111A810 0001
    Infinite Lasergun Ammo8111A812 0063
    8111A818 0000
    Lasergun Never Needs to Reload8111A81A 0000
    Have Handgun (Won't Fire?)8111A6D0 0001
    Infinite Handgun Ammo8111A6D2 0063
    8111A6D8 0000
    Handgun Never Needs to Reload8111A6DA 0000
    Cannot Jump81117F1C 0100
    Moon Jump [Note]D0117DF4 0008
    81117EEC FFFF
    D0117DF4 0008
    81117EEE FC00

    Note: Hold L to rise, release L to land.


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