Quake 3: Arena [DC]

Cheat mode
Successfully complete the game on any difficulty setting to unlock a maze mini-game on the VMU. Successfully complete the maze-mini game to unlock a cheat on the cheat menu. To access the cheat menu, pause the game and choose the "Settings" selection, then scroll down past the "Internet" selection and choose the "Cheats" selection. Depending on what difficulty the game was completed on will depend on what cheat was unlocked. Complete the game on different difficulty settings to unlock different cheats.

Console codes
Note: The following codes require a Dreamcast Keyboard. While playing a game, press ~ to display the console screen. Then, enter one of the following commands to activate the corresponding result:

Result Code
Clear console line /clear
Display console commnands /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

Hidden Music
Turn on the Dreamcast without a disc. At the Dreamcast main menu, choose Music to access the CD Player. Insert the game disc and close the lid. If done correctly, an image of the game disc will appear. Tracks 4 through 19 are music from the game