Unreal Tournament (Dreamcast)
CheatingDome.com
All weaponary
Press Left, B, Right, X, Right, Left, after you paused the game.
Every character
Press Left(2), B(2), Right, Left, B, after you paused the game.
God mode
Pause the game and press Left, Left, Right, Right, Down, Up.
Invisble
Press X, B, Left, Right, B, X, after you paused the game.
Level skip
Pause the game and press Up, Down, Left, Right(2), Left.
Max ammo
Press Left, Right, B(3), Right, Left, after you paused the game.
Refill health
Pause the game and press Down(3), Left, Up, Right.