The Mystery Inc. gang finds themselves in a museum in
Scooby Doo: Case Files 1: The Glowing Bug Man, but upon arriving at the museum, they are told that it has been closed due to a large, dangerous, four-armed green glowing bug.
Scooby and Shaggy run across the museum's security guard, and he tells the gang that he has already comprised a list of suspects. The suspects are made up of five workers. The gang sets out to find clues that will help them sift through the different suspects. As you point and click your way to the different items, you mark off each suspect that the clue applies to. If done right, only one person will fit all five clues.
To find the clues, you visit various parts of the museum (the Dinosaur Exhibit, the Mineral Exhibit and of course, the cafeteria) and put the exhibits and museum pieces back the way they are supposed to go since the Bug Man has apparently been busy messing things up. These tasks involve slide puzzles, figuring out what flavors are in the ice-cream maker (including such delicious delights as 'Blueberry Bacon Bits', 'Orange Artichoke' and 'Vanilla Blue Cheese'), and maneuvering ants back into their homes.
At several points, you will need to convince Scooby and Shaggy to move into a spooky area, and what better way than with Scooby Snacks. You start off with a couple, but you might need more. There is a mini-game in The Glowing Bug Man that has you moving Scooby up and down conveyor belts collecting lost bones, and with each one you nab from the Bug Man's grasp, you gain a snack.
Eventually you will gather all of the clues you will need to choose the criminal; at this point you will watch a small cut scene of the gang trapping the crook (in their normal slap-stick way). The best part, for the kids that play it anyway, is that it won't necessarily be the same person each time you play it, since the culprit is randomly chosen at the beginning of the game.