Preorder now! Will be ready to ship and pick up on Friday, Based on the award-winning Betrayal at House on the Hill board game, Betrayal at Mystery Mansion offers 25 brand new haunts based on popular Scooby-Doo episodes and movies. Playing as one of the members of The Mystery Inc. Gang, you explore the mansion and its grounds, finding clues, encountering strange occurrences, and maybe even catching sight of a monster! Will you be able to stop them before they carry out their sinister plan?