Extreme-G 3 Cheats on GameCube
Press L + R, Z, L + R, Z after "Press Start" appears at the title screen. A message will confirm correct code entry. Note: This effect lasts for only one race and must be re-enabled before the next one.
Press L, R, L, R, L + R, Z after "Press Start" appears at the title screen. A message will confirm correct code entry.
Press R, L, Z, L, R, Z, R, L, Z after "Press Start" appears at the title screen. A message will confirm correct code entry. This allows you to win a race no matter if you quit, lose, or die. Note: This must be enabled at the main menu before every race.
Press L + R + Z, L + R, Z, L + R + Z after "Press Start" appears at the title screen. A message will confirm correct code entry.
Press L, R, Z, L, R, Z, L + R after "Press Start" appears at the title screen. A message will confirm correct code entry.
Press L, R, L, R, L, R, Z, L + R at the main menu. A message will confirm correct code entry. This unlocks an oval track for maximum speed.
Press L(2), R(2), Z(2), L + R + Z after "Press Start" appears at the title screen. A message will confirm correct code entry.
Complete the game in XG Career mode.
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.
Once your racer hits 750 mph you break the sound barrier and everthing go's quiet.