All Working Quake 3: Arena Cheats - DC

Cheat mode
Complete single player missions under various difficulties to unlock cheats in multi-player mode. Press Start to pause game play in multi-player mode, then select the cheat option from the menu.

Successfully complete the game under any difficulty setting to unlock a maze mini-game on the VMU. Successfully complete the maze-mini game. The message "Cheat unlocked" will appear on the main game screen to confirm correct completion. Complete the mini-game under each of the five difficulty settings to unlock all cheats, which includes the ability to survive all falls, and more.

Console codes
Note: The following codes require a Dreamcast Keyboard and Dreamcast Mouse for easy entry. Press [F12] or [~] during game play to display the console screen. Type in ";raster 1" (without the quotes) to enable cheat mode. Enter one of the following commands to activate the corresponding effect. Note: You can lookup commands by pressing a letter followed by [Tab] at the console screen. Note: Type \ followed by a letter to list all commands that begin with that letter. Note: Some codes are only effective in single player mode.

Clear console line - \clear
Display console commands - \help
Display player list - \who
Send message to all players - \say
Send message to indicated player - \say <1-4>
Send message to player that is attacking you - \tell_attacker
Send message to player that is targeted - \tell_target
Send message to your team in team modes - \say_team
God mode - \god
Walk through walls - \noclip
Enemies will not attack - \notarget
Set frag limit - ;set fraglimit <number>
Set capture the flag limit - ;set capturelimit <number>
Set time limit in minutes - ;set timelimit <number>
Set new crosshair - ;set crosshair <1-25>
Map select - ;map dc_map <01-24>
Alternate level colors¹ - /r_lightmap 2 (you need to restart the level to see the effect)
Enable all start menu cheats - \cl_cheats 31