A house in a suburban neighborhood no longer fully exists in our universe. Something unnatural happened inside only a few hours ago. The local authorities have not yet responded or even realized something is amiss there.
The following map is meant as a resource for any modern horror game. Use it as the starting seed of a scenario or as a finale. The artifact behind the anomaly is left undescribed so it can be replaced with whatever fits for a particular game – a mystic tome, a high-tech device stolen from a government lab, or something else entirely.