In two separate scenes, members of "the survivors" (as referred to by the filmmakers) are seen sleeping. Both times actor Aaron Christensen is actually asleep.
The large majority of the cast and crew stayed at co-writer/director John Pata's apartment during production.
Both the abandoned house and barn which appear in the film fell victim to arson just months after production ended.
It took actor Sam Lenz three attempts to smash the car window (which was an actual car window).