3 Days | Complete an Accelerated Investigation | Limited Players Per Table | Catered Meals & Hotel Handled | 18+
IN A CASTLE
Some truths were never meant to be found…
You're going to find them anyway...
Scroll down for more information.
A Premium Horror RPG Vacation
Three days inside a historic landmark. One complete adventure, from the first unsettling clue to its terrifying end. Your fellow investigators around a single table—no phones, no distractions, nothing to do but follow the mystery into the dark and hope you come back.
When sanity's a luxury, horror is home. You investigate — we handle the rest.
YOUR NEXT INVESTIGATION
DESERVES A CASTLE!
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TWO WINTER WEEKENDS - TICKETS ON SALE!
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SUMMER 2027
June, July and August dates to be announced soon!
Location: Glencairn Museum (the “Castle”) - Philadelphia PA
Tickets go on sale in November!
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FALL 2027
October dates and details coming soon!
WHY ATTEND?
“A weekend of insanely fun and intense gaming that you can't easily replicate at home or at a convention.”
— Rick Meints, President of Chaosium
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An RPG Vacation, Not a Convention
🎭 Professional Keepers chosen for cinematic, responsive storytelling guide you through a complete investigation over three days of cosmic horror—a real getaway into dread, not a folding-table weekend.
🤝 Come solo or bring your party!
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Atmosphere You Can Feel
🏰 You play inside historic landmarks, not a convention ballroom. Stone arches and vaulted halls, in low lantern light, with sounds you can't quite place and a building that seems to breathe around you. Everything's designed to warp reality just enough.
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We Handle Everything
Meals, lodging, unlimited snacks and drinks, event prep, and more — all included, so the only thing on your mind is the mystery.
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A Full Investigation in One Weekend
📖 One complete scenario, start to finish, first clue to final horror in three days. No cliffhanger. No campaign that fizzles out, No cancellations, no distractions — just being fully present with friends, old and new, to see it through. If you dare.
THE ESSENTIALS
Upcoming Dates & Venues
January 8–10, 2027 and January 22–24, 2027 — Cairnwood Estate, Bryn Athyn, PA. 40 minutes north of Philadelphia International (PHL). Free parking.
Your Weekend
Doors open 10:00 AM Friday. Gaming begins at 11:00. The story ends between 3:00 and 4:00 PM Sunday. 24+ hours of play across three days, at your table's own pace.
What's Included
Two nights at the Holiday Inn & Suites, Fort Washington. Every meal from Friday through Sunday lunch. Unlimited snacks and drinks. Adult beverages at dinner. Commuter tickets available if you have your own lodging.
18 and over. Payment plans available.
What Investigators Say
“Cthulhu in a Castle is a highly immersive and thoroughly enjoyable luxury TTRPG experience. They have thought of nearly everything, from GMs, Discord, character creation, and on-site assistance and tours of the beautiful venue to catering and much more! I would recommend anyone who can squeeze this into their schedule to do so; I had an absolute blast!”
— Austin“Our GM (Keeper) was stellar, both entertaining and deft at managing the pacing and engagement in the game. It was fun that most players and the Keeper did a bit of cosplay too. The event really had this 60-year-old man feel like he was reliving the glory days of teenage RPG games with his friends.”
— Bradley
MANY MYSTERIES.
ONE UNFORGETTABLE TABLE.
Getting there is the last easy part…
The majestic historic district of Bryn Athyn hosts many of our events. This world of genuine Gothic revival and Gilded Age architecture is just 40 minutes north of Philadelphia’s airport. We offer room-inclusive and commuter (no room) ticket options.
“The setting was truly inspiring for the gameplay.” — Scott
“It is an amazing venue. Big enough that you get to meet people from all over (my gaming table had people from 7 different states), but small enough that you don't get lost or feel overwhelmed.“ - Michael
SAMPLE SCHEDULE
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FRIDAY: DAY 1
7:00 am Breakfast opens
10:00 am Castle/Palace Check-In
11:00 Gaming Begins!
1:00 pm Lunch
2:00 pm Gaming continues
6:30 pm Dinner
7:30 pm Gaming continues
11:00 pm - End Day 1
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SATURDAY: DAY 2
7:00 am Breakfast opens
10:00 am Castle/Palace opens
1:00 pm Lunch
2:00 pm Gaming continues
6:30 pm Dinner
7:30 pm Gaming continues
10:00 pm - End Day 2
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SUNDAY: DAY 3
7:00 am Breakfast opens
10:00 am Castle/Palace opens
12:30 pm Pizza Lunch
1:30 Final Gaming Rounds!
3:00-pm Investigation Concludes (Final Revelations)
Plenty of time to catch an evening flight out of Philadelphia. Or add Sunday night through the hotel to leave Monday.
HAVE QUESTIONS?
CONTACT US
Cthulhu in a Castle
Chaosium partners with The Game Theatre to bring official Call of Cthulhu adventures to life in genuinely historic, atmospheric venues where shadowed corridors do half the Keeper's work. This is your descent into places that feel like they are hiding something.
Questions? Email: Sales@TheGameTheatre.com
Call of Cthulhu, Chaosium Inc., and the Chaosium logo are registered trademarks of Chaosium Inc. Call of Cthulhu © 1981–2026 Chaosium Inc. All rights reserved. Cthulhuinacastle.com is (c) 2026 Chaosium Inc. and The Game Theatre LLC.