Skullduggery | Blood Puzzle (1983)

It started as a game... until Death started playing!

Five young Toronto gamers play a medieval-themed board game, but the past haunts the present when one of the players, mild-mannered costume shop clerk Adam, is afflicted by an ancient curse and begins to think he's a warlock. Possessed by a powerful satanist, Adam embarks on a bloodstained rampage.