Scooby-Doo! Night of 100 Frights

All Movies
To unlock all movies, pause the game. Press and hold L and R, then press B, B, B, X, X, X, B, X, B.
(Thanks to Choppin_134@aol.com)

All Power-Ups
To enable all power-ups, pause the game. Press and hold L and R, then press X, B, X, B, X, B, B, B, X, X, B, X, X, X.
(Thanks to Choppin_134@aol.com)

All Warp Gates
To open all warp gates, pause the game. Press and hold L and R, then press B, B, X, B, B, X, B, X, X, X.
(Thanks to Choppin_134@aol.com)

Holiday bonuses
Change the GameCube System date to one of the following to see special things at the front yard and the mystic playground:
January 1 - Fireworks.
February 14 - Hearts on Scooby Snacks.
March 17 - Green fountain water and smoke from chimneys.
July 4 - Red, white, and blue fireworks, fountain water, and smoke from chimneys.
October 31 - Giant bats over courtyard door for decoration.
December 25 - Snow.
December 31 - Fireworks.
(Thanks to Choppin_134@aol.com)

See Credits
To unlock the end credits, pause the game. Press and hold L and R, then press B, X, X, B, X, B.
(Thanks to Choppin_134@aol.com)