Welsh mode:
Pause, then hold L and press Y, Y, Y, Y.
Turbo mode:
Pause, then hold L and press Y, B, X, X.
Squeaky voices:
Pause, then hold L and press Y, X, Y, Y.
Real Controls:
Pause, then hold L and press Y, Y, Y, B.
First person mode:
Pause, then hold L and press Y, B, Y, B.
