Fuzion Frenzy
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
First person mode
Pause the game, then hold L and press Y, B, Y, B. Repeat the code to disable its effect.
Welsh mode
Pause the game, then hold L and press Y(4). Repeat the code to disable its effect.
Enable "Real Controls"
Pause the game, then hold L and press Y(3), B. Repeat the code to disable its effect.
Squeaky voices
Pause the game, then hold L and press Y, X, Y(2). Repeat the code to disable its effect.
Mutant mode
Pause the game, then hold L and press Y, B, X(2). To get mutant mode two, repeat the code. To get mutant mode repeat the code again. To disable the code repeat the code one more time.