Complete an epic campaign in one weekend of madness: Call of Cthulhu in a Castle returns in October
Posted by Michael O'Brien on 3rd May 2026
Call of Cthulhu in a Castle is a four-day horror experience for those who dare to peer into the unknown. Unravel a chilling official Call of Cthulhu investigation with more than 24 hours of in-game time, guided by a seasoned Keeper in an atmosphere dripping with dread and mystery. Brilliant minds, dark secrets, and a setting that makes the horror feel terrifyingly real.
Dates & Location:
August 14–16, 2026 - Almost Sold Out!
October 23-25, 2026 - On Sale!
Glencairn Museum | Philadelphia, PA
Campaigns on offer include Masks of Nyarlathotep, Horror on the Orient Express, The Two-headed Serpent, Mansions of Madness, The Spark Devil (HPLHS), Campfire Tales, and more!
Glencairn is a true medieval masterpiece with soaring halls, stone staircases, and museum-level architecture that elevates every moment of play. From dramatic roleplay scenes to late-night dice rolls beneath vaulted ceilings, this is tabletop gaming the way it was meant to be experienced.
Chaosium has partnered with The Game Theatre to bring official Call of Cthulhu Scenarios to life in genuinely unsettling real-world settings — historic, atmospheric venues where shadowed corridors do half the Keeper's work. This is your descent into madness, played out in a place that already feels like it's hiding something.