God Mode -> god
Into the game press Tab (it's over the Caps Lock), write the code and then press Enter.
* Cheat code: Fly Mode --> fly
I'ts like the god mode but you must write the word for this modality.
* Cheat code: Ghost Mode --> ghost (in this modality you can't take any object)
I'ts like the god mode but you must write the word for this modality.
Sent in by: Aislinn87

Cheat mode:-  Press [Tab] during game play in single player mode, then enter one of the following codes to activate the
corresponding cheat function. Note: Codes must be reactivated after each level.

Effect Code

God mode god
Flight mode fly
No clipping mode ghost
Disable flight and no clipping modes walk
Full ammunition allammo
All weapons allweapons
All weapons and full ammunition loaded
Toggle third person view behindview <0 or 1>
Change movement speed; default is 1.0 slomo <0.1 to 2.0>
View frame rate stat fps
View network status stat net
Underwater breathing amphibious
Toggle invisibility invisible <true or false>
Teleport to crosshair location teleport
Win the current match skipmatch
Jump to a specific match; for example, 12 is ladder 1, match 2 jumpmatch <integer number>
Change player size factor changesize <floating point number>
Toggle camera lock lockcamera
Unlock camera rotation from actor freecamera <true or false>
Reset camera to view player; true for quiet, false for sound viewself <true or false>
Cycle camera through the viewable bots viewbot
View actor currently carrying flag viewflag
Change the camera view to indicated player viewplayer <player>
Change the camera view to indicated actor viewactor <player>
Change the camera view to indicated class viewclass <player>
Kill actor the camera is currently viewing killviewedactor
Possess a pawn of indicated class avatar <class>
Spawn indicated item summon <item>
Set camera distance to its target setcameradist <floating point number>
Set gravitational pull setgravity <floating point number>
Set jump height setjumpz <floating point number>
Multiply player water and ground speed by indicated value setspeed <floating point number>
Write all dynamic actors to log file listdynamicactors
Pause the game for indicated duration freezeframe <floating point number>
Set red color component of fog setfogr <floating point number>
Set green color component of fog setfogg <floating point number>
Set blue color component of fog setfogb <floating point number>
Set the duration a screen flash takes to fade away setflash <floating point number>
Trigger the indicated event causeevent <event name>
Toggle logging for all scripted sequences logsciptedsequences
Kill all actor pawns except the player killpawns
Kill everything of the indicated class killall <class>
Kill all pawns of the indicated class killallpawns <class>
Toggle the level to players only playersonly
Toggle view to indicated actor cheatview <actor>
Write the string :"NOW!" to the game log writetolog
Test jumping reviewjumpspots <transloc, jump, combo or lowgrav>
Add indicated number of bots add bots <integer number>
Commit suicide suicide
Connect to server or load map open <IP address or map name>
Disable statistics display stat none
Display all statistics stat all
Display game statistics stat game
Kill all bots killbots
Quit game exit or quit
Quit the server you are connected to disconnect
Record demo demorec <filename>
Resume sounds unpausesounds
Set brightness brightness <integer number>
Set CD track music track cdtrack <integer number>
Set contrast contrast <integer number>
Set field of view fov <integer number>
Set gamma gamma <integer number>
Set song intensity musicorder <0-3>
Silence pausesounds
Stop recording current demo stopdemo
Toggle full screen and windowed mode togglefullscreen
View configuration information confighash
View memory status. mem stat

All skins:-  Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "ut2003.ini" file in the game folder. Add the following lines to the file.

[XInterface.Tab_PlayerSettings]
bUnlocked=True
bTDMUnlocked=True
bDOMUnlocked=True
bCTFUnlocked=True
bBRUnlocked=True

Hidden vehicle demo map:-  A hidden vehicle demo map can be found in the "\ut2003\maps" folder. Play it and hit the switch on the ground. A giant car that shoots rockets will fall from the sky.

Redeemer weapon (demo version):-  Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "user.ini" file in the "system" folder in the game directory. Add the following line:

Z=set XWeapons.Rocketlauncher FireModeClass
class'XWeapons.RedeemerFire' | set XWeapons.RedeemerFire
AmmoClass Class'XWeapons.RocketAmmo'
Press Z during game play, then shoot the rocket launcher to fire Redeemer ammunition from it.

Character close-up (demo version):-  Enable the behindview 1 code, then choose the Electric Sniper weapon. Click the Right Mouse Button to zoom in, and the view will focus on your character in a third person view close-up.

Speed power-up (demo version):-  When your adrenaline reaches 100 and it starts to flash, tap forward (W) for a speed power-up.

Boost power-up (demo version):-  When your adrenaline reaches 100 and it starts to flash, tap back (S) six or seven times to get a boost power-up.

Invisibility power-up (demo version): -  When your adrenaline reaches 100 and it starts to flash, tap right strafe (D) two times then three left strafe (A) three times to get invisibility.

Berserk power-up (demo version):-  When your adrenaline reaches 100 and it starts to flash, tap forward (W) three times and back (S) two times.

Skeletal remains (demo version):-  Get killed by the fire found in the environment and your remains will be skeletal instead of flesh.