Extreme-G 3

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.

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.

Complete the game in XG Career mode.