Der Spielzeugmacher [Toy Maker]

You and your friends love to play games and solve puzzles. You are delighted but also quite intrigued when you receive an exclusive invitation to meet with the owner of a famous toy store. When you arrive however, you discover that the store seems to be closed and the owner is nowhere to be found. The door suddenly springs open and you step inside. One thing is for sure: this is no ordinary toy store...