Invincibility:
Enter I.AM.IMORTAL as a password. Your vehicle will be indestructible.

All weapons:
Enter ALL.TOOLEDUP as a password. All weapons will be available at the start of the race.

Unlimited ammunition:
Enter LOADSOFSTUFF: as a password. Note there is a colon ":" in the code.

Bonus level:
Enter BONUS.LEVELS as a password. You will be able access six bonus tracks.

Last level:
Enter ENDGAMELEVEL as a password. You will be able to access the last level of the game.

Level select:
Enter RABBITBADGER as a password. An option to skip levels will appear when the game is paused.

End sequence and credits:
Enter JOURNEYS.END as a password.