Downforce
At the main menu, press:
Invincibility – L1, Triangle, R1, Triangle, Down(x2), Circle
Expert CPU – Triangle, Right, Left, Square, Up, Circle, Down, Right
Crash Arena – Left, Right(x2), Square, Down, Triangle(x2), Square
Crash Arena in 2-plr mode – Right, Left(x2), Circle, Up, Triangle(x2), Square
Beginner Trophy – Right(x2), L1, Triangle(x2), R1, Right
Intermediate Trophy – Right(x2), Square, Left, L1, R1, Square(x2)
Expert Trophy – Right(x2), Circle, Left, L1, Circle, R1, Circle
Intermediate Championship – Down, Square, Up, Square, Right(x2), Left
Expert Championship – Down, Circle, Up, Down, Circle(x2), R1, L1