During gameplay

Code               Result
-------------------------
ikea             - Alternate color cars on/off
agresso          - hard mode on/off
rallyx           - unlock secret tracks
iopred           - very hard mode on/off
infrarat         - easy mode on/off
strawberrybattle - Mentat clearance sale mode on/off
stun-v           - reset all codes
boost            - accelerate before go for a turbo start
2creator         - shows name of the creator