Extreme G3 (Gamecube) Cheats & Tips
Cheats, codes, tips, hacks, how to's, and walkthroughs
Press Forward while the countdown is commissioning, then hit the gas once "Go" appears.
Unlimited Shields and Turbos
While at the "Press Start" screen, press L + R, Z, L + R, Z. This code is disabled after every race.
Unlock the StarCom Team
Beat the XG Career Mode.
Unlock the Extreme Lap Challenge
While you are at the main menu, press L, R, L, R, L, R, Z, L + R.
Unlock all Tracks and Teams
While at the "Press Start" screen, press L, L, R, R, Z, Z, L + R + Z.
Double All Prize Money
While at the main menu, press L, R, Z, L, R, Z, L + R.