Scooby-Doo: Mystery Mayhem cheats and cheat codes for Gamecube

Weird Wild West: Safe code:
The three digit safe code in the bank is "1-3-7".
You can found written on the blackboard in the schoolhouse.

Opening the bridge on level 2:
To open the bridge you have to use 4 switches.
Press switches 1, 2, and 4.

Unlock mini-games:
Find the 5 hidden sandwich ingredients in a stage

Trap The Fake Ghost mini-game: Collect the ingredients in stage 1.
Monster Frenzy mini-game: Collect the ingredients in stage 2.
Mine Cart mini-game: Collect the ingredients in stage 3.
Trail Bike mini-game mini-game: Collect the ingredients in stage 4.
Spooky Science mini-game: Collect the ingredients in stage 5.