Use the following codes at the main menu to unlock the corresponding effect:
Invincibility: L1, Triangle, R1, Triangle, Down, Down, Circle
Crash Arena: Left, Right, Right, Square, Down, Triangle, Triangle, Square
Crash Arena 2 Player: Right, Left, Left, Circle, Up, Triangle, Triangle, Square
Advanced Enemy AI: Triangle, Right, Left, Square, Up, Circle, Down, Right
Beginner Trophy: Right, Right, L1, Triangle, Triangle, R1, Right
Intermediate Trophy: Right, Right, Square, Left, L1, R1, Square, Square
Expert Trophy: Right, Right, Circle, Left, L1, Circle, R1, Circle
Championship Intermediate: Down, Square, Up, Square, Right, Right, Left
Championship Expert: Down, Circle, Up, Down, Circle, Circle, R1, L1
Expert CPU: Triangle, Right, Left, Square, Up, Down, Right