Scooby-Doo: Mystery Mayhem Cheats

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Opening the bridge:
On level 2, to open the bridge there are four switches. Press switches 1, 2, and 4.

Suck up ghosts in a book:
When you play L1, You will find a book. You can suck up ghost's on every level just press Square near a ghost and press what button it says at the bottom of the screen to suck up ghost.
REMEMBER: Some ghosts you can\'t suck up.
User Cheat by Martinbooth

Mini-games:
Get the five hidden sandwich ingredients in a level to unlock a mini-game.

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

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