Cheat Codes:
Enter the options screen, then select “Cheat Codes”. Enter one of the following case-sensitive codes to activate the corresponding cheat:
CHEAT FUNCTION – CHEAT CODE
Unlock all modes – theparrot
Unlock all cities – griswold
All cities, vehicles and modes in arcade mode – upupdowndown or rimbuk
Set difficulty; 0 is easiest – howhardcanitbe