Soon our DVD players will be able to have a little assistance solving mysteries when Scooby Doo: The Mystery Begins launches this fall. Warner Bros have a game tie-in, titled Scooby Doo! First Frights, set to release along side it. It’ll follow the adventures of a young Scooby Doo & the rest of Mystery Inc as they solve their very first case. Players will assume the role of all the members of the team to solve various puzzles in a platforming game that will feature both single player & co-op. Here are some new screens & a new gameplay trailer. Look for First Frights to hit shelves this fall on the Wii, DS, & PS2…