Duke Nukem: Zero Hour
Debug mode:
Press C-Up, Up, C-Left, Right, C-Down, Down, C-Right, R, A, B when "Press
Start" appears at the opening screen. A sound will confirm correct code
entry. Use controller two to select the debug options. Press Start to
cycle through the options, such as "Cheats", "Level Select", and more.
When you enter the code on the title screen and hear the horse, the
Cheats Menu will be available but will have no cheats active (unless you
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. Pressing Start cycles
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 *
First person view:
Press Down, Up, L, B, Z, Left, C-Up, C-Right, C-Left, Z when "Press Start"
appears at the opening screen. A sound will confirm correct code entry.
All weapons:
Press Down, A, Up, L, Z, R, C-Up, C-Down, B, C-Left
Freeze Thrower and unlimited ammunition:
Press Down, Up, A, L, R, Z when "Press Start" appears at the opening screen.
A sound will confirm correct code entry.
Rifle and unlimited ammunition:
Press C-Up, C-Down, C-Left, C-Right, L, R when "Press Start" appears at the
opening screen. A sound will confirm correct code entry.
Multi-player character set 1:
Press A, L, R, Left, B, Down, Up when "Press Start" appears at the opening
screen. A sound will confirm correct code entry.
Multi-player character set 2:
Press B, A(2), R, L when "Press Start" appears at the opening screen. A
sound will confirm correct code entry.
Multi-player character set 3:
Press L(2), Up, Down, R, B, A when "Press Start" appears at the opening
screen. A sound will confirm correct code entry.
Multi-player character set 4:
Press B(3), R, Left, A when "Press Start" appears at the opening screen. A
sound will confirm correct code entry.
Multi-player character set 5:
Press Right, B, Left, L, A, Z when "Press Start" appears at the opening
screen. A sound will confirm correct code entry.
Multi-player characters set 6:
Press Up, Down, B, A(2), Left when "Press Start" appears at the opening
screen. A sound will confirm correct code entry.
High speed zombies:
Press A(2), Z, A, R, C-Down, B when "Press Start" appears at the opening
screen. A sound will confirm correct code entry. Alternately, rescue all
babes in level 8, "Dry Town", to unlock the cheat option for high speed
zombies.
Skin select:
Press C-Left, R, Left, Up, Down, B, A, Z when "Press Start" appears at the
opening screen. A sound will confirm correct code entry. Go to
multi-player mode and select a character. Press Start, select "Quit Game"
then choose "Yes". Start a one player game to play as the person that was
previously selected.
Action Nuk'em mode:
Press Down(2), A, Z(2), Left, A when "Press Start" appears at the opening
screen. A sound will confirm correct code entry. Alternately,
successfully complete the game. This mode allows Duke to kill opponents
with one shot.
Big head mode:
Press B, Up, Down(2), A, Z, A, Right when "Press Start" appears at the
opening screen. A sound will confirm correct code entry. Alternately,
rescue all babes in level 2, "Liberty Or Death", to unlock the cheat
option for big head mode.
Big gun mode:
Press C-Up, C-Left, Z, B, L, Z, A when "Press Start" appears at the
opening screen. A sound will confirm correct code entry. Alternately,
kill all opponents in level 3, "Nuclear Winter", to unlock the cheat
option for big gun mode.
Flat shade map:
Press Down, Up, Left(2), A, Right, Down when "Press Start" appears at
the opening screen. A sound will confirm correct code entry.
Alternately, obtain all secrets in the secret "Wetworld", level to
unlock the cheat option for flat shade map.
Ice skin:
Press B, Z, Up, L, A, C-Right, A when "Press Start" appears at the
opening screen. A sound will confirm correct code entry. Alternately,
rescue all babes in level 5, "Fallout", to unlock the cheat option for
ice skin.
Weather:
Press Z, A, L, B, Down, Up, R when "Press Start" appears at the
opening screen. A sound will confirm correct code entry. Alternately,
obtain all secrets in level 6, "Under Siege", to unlock the cheat
option for weather.
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:
Rescue all babes/obtain all secrets 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.
More multi-player characters:
Complete any level and save the game to unlock one additional character
in multi-player mode.
Health refill:
Destroy a fire hydrant, toiler, water pump, or another water source.
Run up, stand in the water and repeatedly press B to slowly restore
Duke's health until it reaches 100. Also, if you see a concentrated
area of purple objects appearing from the ground, stand on it to refill
your health.
Wetworld level:
Play through the "Nuclear Winter" level until reaching the rail tracks
leading to the communicator. 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:
Locate all the time machine pieces before reaching "The Rack" level and
a second exit portal should appear in the room just off where the first
is located. Use it to reach the "Going Down" (Titanic) level.
Easy Western period Boss kill:
Get the sniper rifle before facing the giant scorpion at last stage of
the western time period. Go out to the entrance when you can barely or
see half of the scorpion. Pull out the sniper rifle, aim at its body,
and start firing.
