The music video where Deathgasm is in the woods wearing face paint is a reference to the well-known (for being bad) music video: "Call of the Wintermoon" by Immortal.
There are rumors that if you play a muted DEATHGASM and Iron Maiden's "Live After Death" simultaneously, it syncs up perfectly due to precise editing. The filmmakers have yet to comment.
The movie concept is based on the first Evil Dead (1981). Both movies are about teenagers who unknowingly summon demons, then both have to fight to survive and figure out a way to reverse the spell from the object that was used to release the curse in the first place.
After obtaining the Hexan Sword Record, Zakk discovers that it is just a Rick Astley record. Astley's song "Never Gonna Give You Up" is wildly used to trick people on the internet by leading them to this song under false pretenses, a practice called "Rickrolling."
Shot entirely on location in West Auckland in twenty days.