This year marks Chaosium’s 50th anniversary, and what better way to celebrate than by inviting you to a hauntingly immersive experience?
In collaboration with our friends The Game Theatre, we're proud to present Cthulhu in a Castle, a brand-new three-day Call of Cthulhu RPG vacation event—set within the eerily atmospheric halls of Cairnwood Estate in Philadelphia, PA.
From January 23–25, 2026, you can step into a cinematic weekend of cosmic dread, dark mysteries, and unparalleled roleplay—crafted specially for longtime Chaosium fans.
Secure your place among the haunted halls today: Cthulhuinacastle.com
We can’t wait to celebrate this momentous milestone with you—by disappearing into shadows and chasing the unknown.
Stay curious—and watch your back at midnight!
In collaboration with our friends The Game Theatre, we're proud to present Cthulhu in a Castle, a brand-new three-day Call of Cthulhu RPG vacation event—set within the eerily atmospheric halls of Cairnwood Estate in Philadelphia, PA.
From January 23–25, 2026, you can step into a cinematic weekend of cosmic dread, dark mysteries, and unparalleled roleplay—crafted specially for longtime Chaosium fans.
What Makes This Event Unmissable:
- An epic Call of Cthulhu scenario inside a real Gilded Age mansion, replete with candlelit chambers, ancient lore, and lingering shadows.
- A fully inclusive horror getaway—two nights luxury hotel stay, six themed meals, endless snacks, and Bundled hospitality.
- A chance to connect with fellow explorers of the Mythos, forging unforgettable memories in a storybook setting.
- A rare opportunity in our company's historic 50th year to experience tabletop horror as you’ve never before.
Secure your place among the haunted halls today: Cthulhuinacastle.com
We can’t wait to celebrate this momentous milestone with you—by disappearing into shadows and chasing the unknown.
Stay curious—and watch your back at midnight!