Deformed Characters:
At the title screen, press Left, Left, Up, Up, Right, Right, Down, Down.
Easy Mode:
At the title screen, press Up, Down, Down, Up, Left, Left, Up, Right, Right, Up, Up, Up.
Boogie Mode:
At the title screen, press Right, Down, Left, Up, Right, Down, Left, Up, Right, Down, Left, Up, Right, Down, Left, Up.
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