Scott goes over the history of Which Witch, a game that's been adapted into many other games, including The Real Ghostbusters Game and the Scooby-doo! Haunted House 3D Board Game.
If you're interested in learning more about Marvin Glass and Associates, Scott recommends that you read A World Without Reality: Inside Marvin Glass's Toy Vault. We also discussed him in Ludology 212 - Inventing Play with Kim Vandenbrouke.