Cheat mode:
Press [Tab] or ~ to display the console window. Then, enter one of the following codes :

Full ammo for current weapon - allammo
Full ammo for all weapons in inventory - allammo 999
Flight mode - fly
No clipping mode - ghost
Disable flight and no clipping modes - walk
Invincibility for current level - god
Add weapon or item to the world1 - summon (item name)
Toggle time - playersonly
Jump to indicated map2 - open (map name)
Third person view - behindview 1
Normal view - behindview 0
Set game speed2 - slomo(number)
Kill monsters - killpawns
Kill all of indicated enemy type - killall (enemy name)
Invisibility - invisible
Reset graphics and textures - flush

1. Set (item name) according to the following list.
2. Set (map name) according to the following list.
3. Set (number) to 1.0 for normal speed.

Hidden room:
Go to the extreme dark level in botmatch (or enable the summon extremedark code). Enable the ghost code at the start of the level. Fly to the lowest room in the area. There is no way to get in or out of this room without the ghost code.

Hidden area at end:
Go to the ending scene (use the open endgame code if desired), and enable the ghost code. Follow the same path that the rocket would travel until you get to the darkness at the end (before the rocket goes outside). Go into the darkness and look around. You should see what appears to be a black box with a yellow border, and a light switch on top.

Quadshot gun:
This is an extra gun on the game. Enable the summon quadshot code and a different gun will appear. Pick it up. If you have the stinger gun, take it out and press 3 again. if you do not have the stinger, press 3 and a gun will appear, taking up almost all of the screen and looks like a plus sign. The gun has no ammunition and will not shoot.

Item names:
Use the following values with the summon code.

eightball
flakcannon
stinger
sheildbelt
juicebox
amplifier
scubagear
jumpboots
kelvarsuit
armor
dispersionpistol
automag
ASMD
razorjack
gesbiorifle
nali
skaarjwarrior
translator
minigun
rifle
dampener
flare
flashlight
forcefield
invisibility
jumpboots
searchlight
nalifruitseed
voicebox
bandages
nalihealingfruit
superhealth
armor
asbestossuit
antitoxinsuit
slith
mercenary
krall
brute
titan
dispersionpowerup1
dispersionpowerup2
dispersionpowerup3
dispersionpowerup4

Map names:
Use the following values with the open code.

Bluff
Ceremony
Chizra
Dark
Dasacellars
Dasapass
Dcrater
Dig
DKNightOp
DMARIZA
DMCURSE
DmDeathFan
DmDeck16
DMElsinore
DMfith
DmHealPod
DmMorbias
DmRadikus
DmTundra
Dug
Endgame
Entry
ExtremeLab
ExtremeEnd
ExtremeGen
ExtremeBeg
ExtremeCore
ExtremeDark
ExtremeDGen
Gateway
Harobed
IsvDeck1
IsvKran4
IsvKran32
NaliBoat
NaliC
NaliLord
Noork
NyLeve
Passage
QueenEnd
Ruins
SkyBase
SkyCaves
SkyTown
SpireVillage
TerraLift
Terraniux
TheSunspire
Trench
Unreal
VeloraEnd
Vortex2