Fuzion Frenzy

First person mode:
Press Start to pause game play. Then hold L and press Y, B, Y, B. Repeat the code to disable its effect.
DZNUTZ via FunXbox.

Turbo mode:
Press Start to pause game play during a mini-game. Then hold L and press Y, B, X(2). Repeat the code to disable its effect.
DZNUTZ via FunXbox.

Welsh mode:
Press Start to pause game play. Then hold L and press Y(4). Repeat the code to disable its effect. The announcer will be a woman with a Welsh accent.
DZNUTZ via FunXbox.

Enable "Real Controls":
Press Start to pause game play. Then hold L and press Y(3), X. Repeat the code to disable its effect.
Chris Pelham.

Squeaky voices:
Press Start to pause game play. Then hold L and press Y, X, Y(2). Repeat the code to disable its effect.
DZNUTZ via FunXbox.

Mutant mode:
Press Start to pause game play. Then hold L and press Y, B, X(2). This gives characters big heads. To get mutant mode two (giant characters), repeat the code. To get mutant mode three (stretched characters) repeat the code again. To disable the code repeat the code one more time.
RaquelMoreta and HumzaAhmed4.

Glitch: Missing character:
Enable the "First person mode" code. At the end of a game of Roller Ball, your character will be not there if you win.
devilin.