Easy mode:-  Quickly press Up, Down(2), Up, Left(2), Up, Right(2), Up(3) at the title screen. A sound will confirm correct code entry.

Big head mode:-  Quickly press Left(2), Up(2), Right(2), Down(2) at the title screen. A sound will confirm correct code entry.

Oogie Boogie mode:-  Quickly rotate the Left Analog-stick counter-clockwise four times at the title screen. A sound will confirm correct code entry. Many objects will be bouncing during game play.

Gameshark Codes

(M) Must Be On 0E3C7DF21853E59E EE8C9146BCC17EFA
Bouncy Stuff CE80EB4EBCA99B84
Play As Same Characters (2 Player Mode) DE80EB4ABCA99B84
Player 1 Infinite Lives FE994223BCA99BE6
Player 2 Infinite Lives FE994433BCA99BE6
Press Select for Tons of Time 0E99D5F8BCA99A81 DE80EF82FE199B83
Quick Score 0E994202BCD99BE6 CE994202BCA99A82
Super Deformed People CE80EB42BCA99B84
Super Hero DE80EB92BCA99B84