Extreme G3 Cheats and Hints for PC Platform
Infinite shields and turbos
At the "Press Start" screen, press L + R, Z, L + R, Z. If you entered the code correctly, an "Unlimited Energy/Turbo" message will appear. Note: The effects of this code only last for one race and must be re-enabled before the start of the next race.
Successfully complete XG career mode to unlock the StarCom team.
To get a jump start when you begin a race, hold Forward during the countdown without pressing Gas. As soon as "Go" appears, hit the accelerator.