Invincibility:
Press L1, Triangle, R1, Triangle, Down(2), Circle at the main menu.

Expert CPU:
Press Triangle, Right, Left, Square, Up, Circle, Down, Right at the main menu.

Crash Arena:
Press Left, Right(2), Square, Down, Triangle(2), Square at the main menu.

Crash Arena in two-player mode:
Press Right, Left(2), Circle, Up, Triangle(2), Square at the main menu.

Beginner Trophy:
Press Right(2), L1, Triangle(2), R1, Right at the main menu.

Intermediate Trophy :
Press Right(2), Square, Left, L1, R1, Square(2) at the main menu.

Expert Trophy:
Press Right(2), Circle, Left, L1, Circle, R1, Circle at the main menu.

Intermediate Championship:
Press Down, Square, Up, Square, Right(2), Left at the main menu.

Expert Championship:
Press Down, Circle, Up, Down, Circle(2), R1, L1 at the main menu.