Level Select
     Pause  gameplay,  hold  X and press Up, Down, Left, Right, Right,
Right, Down, Left.

Level Skip
     Pause  gameplay, hold X and press Right, Left, Up, Up, Up, Right,
Left, Left.

Infinite Lives
     Pause  gameplay,  hold  X  and press Down, Down, Up, Down, Right,
Down, Up, Up.

All Extras and Bonus Levels
     Pause  gameplay,  hold  X  and  press Right, Up, Up, Down, Right,
Down, Right.

All Characters
     Pause  gameplay,  hold X and press Left, Right, Left, Left, Left,
Up, Left, Left.

Temporary Invincibility
     Pause  gameplay,  hold  X  and  press Left, Left, Up, Left, Down,
Right, Right, Right.

Turn Coins Into Mad Garibs
     Pause  gameplay,  hold  X and press Right, Left, Right, Left, Up,
Up, Left, Right.