Bonus teams:
Press Left, Right, C, A, B(2) at the setup menu. Four additional teams may be selected.

Pong mini-game:
Press B, C(3), Up, Down at the setup menu.

Super Pong mini-game:
Press A, C, B, Up, Right, Up at the setup menu.

Brutal menu options:
Press C, Right, B, Right, C, Right at the "Turn Up The Heat" screen.