It’s not too late to throw one of these together!
These descriptions of Hell Houses come from the liberal leaning Wikipedia; keep this in mind when reading the rest of the article.
A hell house, also commonly known as a Doom House or Judgment House, is a haunted house-style attraction typically run by North American fundamentalist Christian churches or parachurch groups. These attractions are meant to depict the divine judgments that await unrepentant sinners and the torments of the damned in Hell. They are typically operated in the days preceding Halloween although by definition, they are not part of the holiday.
A hell house, like a conventional haunted house attraction, is a space set aside in which actors attempt to frighten patrons with gruesome exhibits. Unlike the conventional haunted house attraction, the hell house focuses on occasions and effects of sin, or the fate of unrepentant sinners in the afterlife. The motivation for the event occurring during the month of October before Halloween is to take advantage of the similarities between hell houses and conventional haunted houses. Read the rest here.