Gremlin 11 team
At the title screen, press Left, Right, Square, Circle, Up, Down, Square, Circle. If you entered the code correctly, a message will appear.

Invisible players
At the title screen, press Square, Circle, Down, Circle, Up, Right, Square, Left. If you entered the code correctly, a message will appear.

Large players
At the title screen, press Up, Down(2), Right, Square, Square, Circle(2). If you entered the code correctly, a message will appear.

Small players
At the title screen, press Circle, Down(2), Square, Up(2), Left, Right. If you entered the code correctly, a message will appear.

Play with beach ball
At the title screen, press Left, Right, Left, Up, Left, Right, Square(2). If you entered the code correctly, a message will appear.

Super furry animal mode
At the title screen, press Left(2), Square, Right(2), Circle, Up, Down. If you entered the code correctly, a message will appear.

Ghostball mode
At the title screen, press Square(2), Left(2), Right(2), Circle(2). If you entered the code correctly, a message will appear.

Monochrome mode
At the title screen, press Up, Down, Up, Square, Circle, Up, Down, Up. If you entered the code correctly, a message will appear.

No floodlights
At the title screen, press Left(3), Circle, Right(3), Square. If you entered the code correctly, a message will appear.