Stuff of Nightmares is a stand-alone game within the Gruff rules system. Gruff is a tactical combat card game where players duel to the death with custom teams of Mutated Monster Goats! Gruff features unique positional and timing mechanics that create a constant state of attack and counter-play. Stuff of Nightmares provides the same visceral competitive experience as Gruff, but adds a new faction to the game to the game, plushy nightmare goats called The Stuffkin!