House of Unusual Size

From the publisher: The PCs wake with no memories and find themselves trapped in Keeton Manor – a mysterious mansion of infinite size. They must struggle to discover their own identities and the nature of their relationship to the haunted Keeton family while desperately seeking a way to escape to house. The House of Unusual Size uses a round-robin GM system, which alternates GM and player duties during each scene and gives the group a chance to experiment with genres and narrative styles during each session.