Cheats for Scooby Doo: Night Of 100 Frights (GAMECUBE)

Defeating the Black Knight:
Ram red switches when Black Knight moves near them.

Defeating the Funland Robot:
Ram him, then super slam him.

Defeating the Green Ghost:
Daphne will open coffins. When the Green Ghost hovers over an open coffin, superslam the switch.

Defeating Master Mind:
He will send out robots and space kooks. Defeat them and when the electric field is down, ram the red switches, Keep repeating this until he falls off his platform. Then, dodge his robots and supersmash them. When the electric field is down again, ram the two red switches and repeat two more times.

Holiday bonuses:
Change the Gamecube system date to one of the following entries 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