Galaga '88 mini-game
Finish Ridge Racer Extreme Extra in first place to play one level of the classic Galaga '88 game. Destroy all forty aliens to unlock the Galaga '88 car and "Galaga Pac Jam" song.
Begin a race on the first track in grand prix mode. At the start of the race, turn your car directly around and drive into the brick wall until you pass through it. A reversed race should now begin. Win this race to unlock the extremely fast caddy car.
Crazy Canuck car
Select car attack mode and choose stage 8 in mirror mode. Defeat the car to unlock the Crazy Canuck car.
Select time attack mode and choose stage 7 or 8. Select set record. Break the record to unlock the Pooka car.
Note: Two players are required to unlock this car. Select two player mode and choose team mode. Select three teams and choose stage 7 or 8. Win first and second place to unlock the 00-Agent car.
Blinky ghost car
Drive 99 laps in free run in time attack mode on any track.
At the car selection screen or trophy screen, press C-Up, C-Right, C-Down, or C-Left to change the view and rotate the cars.
During an instant replay, press C-Left to add a motion blur effect.
Reverse 360 Powerslide
Set the drift mode option to "RR64". Begin a game and get to a sharp turn. Stop accelerating, turn the opposite direction from the turn, and accelerate again while still turning. If done correctly, your car will spin around during the powerslide. After you are turned around, control the car as if in a normal powerslide and re-align it with the track. This trick allows your car to get through winding turns without braking or losing speed.