Try the 2 different set of cheats (they could be version sensitive)
Your name:
DARKSIDE - Drive all stages at night
BACKAGAIN - Drive all the tracks backwards (Finish to Start)
FREEWAY - Unlock all stages
PASSEDOUT - Give Nicky control
WHITEOUT - Race all tracks in fog
PRESSFAST - Pedal power
CHOIRBOY - Give Nicky a squeaky voice
SPECIALED - Replay transition mode
ROCKETMAN - Turbo boost
BIGGUNs - Double power
TURNBACK - Forklift steer
ALIENGOO - Jelly car
Type these in as your name (they only work in rally and trial mode):
BACKSEAT - Co-pilot takes over the wheel PEASOUPER - Fog on all tracks
BUTTONBASH - Pedal car mode (press X and O to move the car)
HELIUMNICK - High-pitched co-pilot
DIRECTORCUT - Replay in transition mode KITCAR - Put on turbo boost
MOREOOMPH - Double the power of your car FORKLIFT - Rear wheel steer only
BLANCMANGE - Jelly car
TROLLEY - 4 wheel steering mode
SKCART - Reverse track
WHITEBUNNY - Drive on the right hand side
NIGHTRIDER - Unlock all night tracks
OPENROADS - Unlock all tracks
SHOEBOXES - All cars (only for expert)
TINFOILD - Chrome car
HOVERCRAFT - Drive a hovercraft
The following cheat was send to us by Andrew & Kim Cowell. Thanks!
ONTHEWALL - race all tracks mirrored
