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Watch the Pendragon Gamemaster's Handbook AMA Join host Bridgett Jeffries and David Larkins and Mark Morrison, as they discuss the Pendragon Gamemaster's Handbook, now available for pre-order. Watch here: Preorder Today! The preorder is live! Preorder the Pendragon: Gamemaster's Handbook...

With Chaosium Con US in Ann Arbor MI now just weeks away, let's fondly remember the first-ever Chaosium-themed convention — GorpCon, held on this day forty-four years ago. Taking place in the Grande Ballroom of Oakland's Hotel Milton, it is said to have attracted fans "from as far afield as...

Now available at Chaosium's Redbubble store: our Official 50th Anniversary Logo t-shirt! Available in a variety of styles and sizes from S to 5XL. #weareallus

Don't miss our AMA for Cthulhu By Gaslight: Keepers' Guide! Submit your questions now and the team - Mike Mason, Lynne Hardy, Keris McDonald, and host Bridgett Jeffries - will answer them live on Twitch on April 3rd, 2:00pm PDT / 5:00pm EDT / 10:00pm BST / 8:00am AEST (Friday! Submit here...

Syrinscape's new Order of the Stone SoundPack gives you a complete sound solution to this recently-released complete Call of Cthulhu campaign for 1920s investigators. A group of misguided archaeologists and their acquaintances bring an ancient evil from the windswept fields of Ireland to the...

Who better to introduce QuestWorlds to a new group of players than the new book's author himself, Ian Cooper! Watch as Ian takes an all-star cast of experienced TTRPG players - Liv Kennedy, Josephine McAdam, Rachel Williams, and Dom Allen - through their first game. Get your own copy of...

The preorder is live! Preorder the Pendragon: Gamemaster's Handbook and receive the PDF right away! Dive into this tome today! https://buff.ly/lhRwPmR

Out now! Unleash the horrors of the Victorian night, reveal sinister secrets, forbidden lore, and mysteries of the late 19th century at your gaming table. The Cthulhu by Gaslight: Keepers' Guide is available now! Full color hardcover: $49.99 (price inc PDF) Special Leatherette version, shown...

Event Submission For Chaosium Con UK Now Open We're seeking Game Masters (GMs) to games, and those who are interested running panels or special events for Chaosium Con UK in May. Submit your events filled with cosmic horror, essential runes, swashbuckling adventure, and chivalrous quests! 12...

See Mark, Belinda and Josephine in action in Graveyards of Arkham, with an all-star cast - the whole six part series is available to watch on YouTube:

Following on from the success of our six-part Graveyards of Arkham actual play series and our live shows at the Edinburgh Fringe Festival last year, we're taking Call of Cthulhu Live on the road for a five city UK tour in May-June! And Graveyards of Arkham stars Mark Meer, Belinda Cornish and...

The Stream of Chaos plays 'Love you to Death', watch here Chicago: February 15th, 1929. It’s a cold winter’s day when the investigator’s good friend Hattie May appears in their office at the detective agency. Her beloved pet dog, Highball, is scheduled to be destroyed later today and she...

Delighted to see that QuestWorlds is now a GOLD bestseller at DriveThruRPG. We invite you to check out our renowned setting-agnostic, rules-lite roleplaying system, originally designed by Robin D. Laws and Greg Stafford, refined in its present edition by Ian Cooper...

And Chaosium's Brian Holland was the guest on Glass Cannon Radio earlier this week. Brian talks about Greg Stafford and Chaosium's 50th anniversary, why he loves the Pendragon RPG, and one of his favourite films, Mad Max: Fury Road.

-- The award was presented by Gary Con CEO Luke Gygax (right) to Chaosium's Jeff Richard (left) on Greg's behalf. -- Chaosium founder Greg Stafford was named the 2025 recipient of the E. Gary Gygax Lifetime Achievement Award today. The award, named after the co-creator of Dungeons & Dragons...

Assemble, knights of Arthur! Due to global shipping delays beyond our control, the Pendragon: Gamemaster's Handbook will not be available next week. Instead, for the first time you will be able to preorder the book chaosium.com from March 26th! You get the PDF immediately upon preorder.

Picking up right where they left left off at Gen Con 2024, it's the continuation of the Glass Cannon Network's Pendragon series! They're kicking things off with a Winter Phase! Pendragon: Under an Iron Sky airs tonight at 8PM ET on YouTube:

Coming to Chaosium Con USA: Community Content Pop-Up Store! Chaosium's Community Content programs, such as the Miskatonic Repository (for Call of Cthulhu), Jonstown Compendium (for RuneQuest/Glorantha), and The Companions of Arthur (for Pendragon), allow fans to self-publish content for their...

Who to expect at Chaosium Con USA in Ann Arbor next month (April 10-13) Who can you expect at Chaosium Con 2025 in Ann Arbor MI next month? From the Chaosium USA team: Jeremiah Evans, Bridgett Jeffries, David Larkins, Chandler Kennedy, Mike Mearls, Rick Meints, Jenelle O’Neil, Jeff Richard...