The Boundary Beyond scenario skews your idea of reality as the city shifts around you. By using the Explore action to investigate different locations, you may find that time has become destabilized as Modern locations are replaced with Ancient ones. You must discover a way to restore the proper timeline before the city and your fate become completely unalterable. Will you be able to return, or will you become lost in time? This is not a standalone product. It requires a copy of Arkham Horror: The Card Game Core Set and The Forgotten Age deluxe expansion to play.