I'm guessing it's a pitch black house (not the movie) it's just you can't see.. perhaps red dots on the ceilings to direct you where to go and periodic flashes of light and something scary is right there. I've done houses like these elsewhere and they are super duper scary and intense, but i"m not sure how they would work at Horror Nights as you usually are CREEPING through them super slowly and Horror Nights is all about go go go. Plus pitch black houses could create more of a liability for injuries?
Idk idk...