Action Replay Codes [EU]
The following are known Action Replay Codes for Duke Nukem: Zero Hour on Nintendo 64 (N64).Device Compatibility: Action Replay & GameShark
Infinite Health 18 – Brainstorm
8119CCED 0064
Have 2 Sawed off Shotguns + infinite Ammo
8111AA84 0003
8111AA86 00FF
Have 2 Alien Freeze-thrower’s + infinite Ammo
8111AB4C 0003
8111AB4E 00FF
Infinite Health 7 – Boss Hog
8119C2AD 0064
Have 2 Gatling Guns + infinite Ammo
8111AB60 0003
8111AB62 00FF
Infinite Health 21 – Zero Hour
8119C01D 0064
Infinite Health 10 – Up Ship Creek
8119E731 0064
Infinite Health 16 – Hydrogen Bomb
8119E68D 0064
Have infinite Vitamin X
8110ACEE 0385
Infinite Health 13 – Cyborg Scorpion
8119C3F5 0064
Infinite Health 9 – Jail Break
8119E545 0064
Infinite Health 8 – Dry Town
8119FEE5 0064
Infinite Health 19 – The Brothers Nukem
8119D919 0064
Have infinite Scuba Gear
8110ACEC 0708
Infinite Health 1 – Training Level
8119CC48 0064
Have 2 BMF Thunderstrike’s + infinite Ammo
8111ABC4 0003
8111ABC6 00FF
Infinite Health 15 – Dawn of the Duke
8119F9C5 0064
Have 2 Blasters + infinite Ammo
8111AA48 0003
8111AA4A 00FF
8111AA52 0000
Infinite Health 5 – Fallout
8119D9BD 0064
Have 2 Peacekeeper Revolvers + infinite Ammo
8111ABD8 0003
8111ABDA 00FF
Have infinite Night Vision Goggles
8110ACF4 0A90
Have 2 Bombs + infinite Ammo
8111AB24 0003
8111AB26 00FF
Have 2 MP-10 SMG’s + infinite Ammo
8111AA98 0003
8111AA9A 00FF
Infinite Health 20 – Alien Mother
8119F735 0064
Have 2 CLAW-12 Shotguns + infinite Ammo
8111AA70 0003
8111AA72 00FF
Infinite Health 3 – Liberty or Death
8119ECF5 0064
Have infinite Protective Boots
8110ACF0 03F0
Infinite Health 4 – Nuclear Winter
8119E879 0064
Have infinite Gas masks
8110ACF6 0708
Infinite Health 11 – Fort Roswell
8119F735 0064
Infinite Health 2 – Mean Streets
8119F401 0064
Have 2 Havoc Multi Launcher’s + infinite Ammo
8111AB88 0003
8111AB8A 00FF
Have 2 Lever Action Rifles + infinite Ammo
8111AAAC 0003
8111AAAE 00FF
Infinite Health 6 – Under-siege
8119D9BD 0064
Have 2 AGL-9 Grenade Launchers + infinite Ammo
8111AAC0 0003
8111AAC2 00FF
Have 2 Pipe Bombs + infinite Ammo
8111AAE8 0003
8111AAEA 00FF
Have 2 Alien Gamma Cannon’s + infinite Ammo
8111AB74 0003
8111AB76 00FF
Have 2 Sniper Rifles + infinite Ammo
8111ABEC 0003
8111ABEE 00FF
Have 2 Volt Cannons + infinite Ammo
8111ABB0 0003
8111ABB2 00FF
Infinite Health 17 – The Rack
8119DEDD 0064
Have 2 Radium Cyanide Launcher’s + infinite Ammo
8111AAD4 0003
8111AAD6 00FF
Infinite Health 14 – The White Chapel Killings
8119F549 0064
Have infinite Medical Kit
8110ACF2 0064
Have 2 CTX-2000 Tripbomb’s + infinite Ammo
8111AB38 0003
8111AB3A 00FF
Infinite Health 12 – Probing the Depths
8119E3FD 0064
Have 2 Dynamite + infinite Ammo
8111AB10 0003
8111AB12 00FF
Action Replay Codes [US]
The following are known Action Replay Codes for Duke Nukem: Zero Hour on Nintendo 64 (N64).Device Compatibility: Action Replay & GameShark
Have Dynamite
8111a7700001
Have Laser
8111a8100001
Have Machine Gun
8111a6f80001
Have Pistol
8111a6a80001
Have Plasma Gun
8111a7e80001
Have Shotgun
8111a6d00001
Infinite Ammo Laser
8111a8120063
8111a8180000
Infinite Ammo Machine Gun
8111a6fa0063
8111a7000000
Infinite Ammo Pistol
8111a6aa0063
8111a6b00000
Infinite Ammo Plasma Gun
8111a7ea0063
8111a7f00000
Infinite Dynamite
8111a7720063
8111a7780000
Infinite Shotgun Shells
8111a6d20063
8111a6d80000
Never Rearm Dynamite
8111a77a0000
Never Reload Laser
8111a81a0000
Never Reload Machinegun
8111a7020000
Never Reload Pistol
8111a6b20000
Never Reload Plasma Gun
8111a7f20000
Never Reload Shotgun
8111a6da0000
Have Extra Weapon
8111a7980001
Have Grenade Launcher
8111a7200001
Have Machine Shotgun
8111a7c00001
Have Pipe Bomb
8111a7480001
Infinite Ammo Extra Weapon
8111a79a0063
8111a7a00000
Infinite Ammo Machine Shotgun
8111a7c20063
8111a7c80000
Infinite Grenades
8111a7220063
8111a7280000
Infinite Pipe Bombs
8111a74a0063
8111a7500000
L Button Super Jump
d0117df40008
81117eecffff
d0117df40008
81117eeefc00
Never Rearm Pipe Bombs
8111a7520000
Never Reload Extra Weapon
8111a7a20000
Never Reload Grenade Launcher
8111a72a0000
Never Reload Machine Shotgun
8111a7ca0000
Infinite Health Mean Streets
80117f1f0980
8019f0610980
Infinite Health Liberty or Death
80117f1f0980
Infinite Health Liberty or Death
8019e9550980
Infinite Health Nuclear winter
80117f1f0980
8019e4d90980
Infinite Health Wetworld Secret Level
80117f1f0980
8119da990980
Infinite Health Fallout
80117f1f0980
8019d61d0980
Infinite Health Under Siege
80117f1f0980
8019e4d90980
Infinite Health Boss Hog
80117f1f0980
8019bf0d0980
Infinite Health Dry Town
80117f1f0980
8019fb450980
Infinite Health Jailbreak
80117f1f0980
Infinite Health Jailbreak
8019e1a50980
Infinite Health Up Ship Creek
80117f1f0980
8019e3910980
Infinite Health Fort Roswell
80117f1f0980
8019f3950980
Infinite Health Probing The Depths
80117f1f0980
8019e05d0980
Infinite Health Cyborg Scorpion
80117f1f0980
8019c0550980
Infinite Health The Whitechapel Killings
80117f1f0980
Infinite Health The Whitechappel Killings
8019f1a90980
Infinite Health Brainstorm
80117f1f0980
8019c94d0980
Infinite Health Brothers Nukem
80117f1f0980
8019d5790980
Infinite Health Dawn of Duke
80117f1f0980
8019f6250980
Infinite Health Hydrogen Bomb
80117f1f0980
8019e2ed0980
Infinite Health The Rack
80117f1f0980
8019db3d0980
Infinite Health Zero Hour
80117f1f0980
8019bc7d0980
Infinite Health Going Down
80117f1f0980
8019ed2d0980
Cheats, Secrets, Tips & Tricks
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 *
Have 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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. –
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.
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.
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.