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Two members of our team have recently taken new steps in their TTRPG industry careers: Congratulations to Jeremiah Evans. Initially joining Chaosium as a part-time convention support specialist in April 2023, Jeremiah is now with us full-time in the role of Convention Coordinator for North...

We’re holding THREE Chaosium Cons this year - USA, UK, and Australia: get your badge and join us in our 50th birthday celebrations! Chaosium Con USA Dates: April 10th-13th 2025 Location: Ann Arbor MI, Eaglecrest Golf Resort and Convention Center (same venue as 2022-24) Accomodation: On site...

Our award-winning Stream of Chaos actual play team have finished playing Paper Chase, one of the four adventures included in the Call of Cthulhu Starter Set. In Paper Chase, the search for a missing professor leads to a grizzly discovery. Watch it all here! The Call of Cthulhu Starter...

Hey, you may have heard we're turning 50 this year - here's the special commemorative pin we've had created for our anniversary! If you'd like one, catch Chaosium at one of the headline conventions we're attending this year: starting with Gary Con (March 20-23)! All attendees coming to the...

Download the free 36 page handouts pack for Rivers of London: Jimmy's Last Dance, our newest case file for the award-winning Rivers of London Roleplaying Game. It contains GM resources, player handouts and maps, NPC portraits, and plain text handouts. Print them and use them again and again...

Let the heralds cry out! Francesca Baerold's glorious 'Britain in the time of Arthur Pendragon' map, as seen in the Pendragon Starter Set and The Grey Knight, is now available in range of wall art formats at our Redbubble Store! Pendragon 6th Edition Map by Francesca Baerald

London isn’t the only place where magic is returning to the world... On the far side of the Atlantic Ocean, old factions are stirring once again to rub shoulders with brash newcomers to the American “twilight subculture,” aka the demi-monde. In Liberty’s Shadow: A Guide to Case Files in the...

Jimmy's Last Dance is a stand-alone scenario for Rivers of London: the Roleplaying Game based on the novels by Ben Aaronovitch. Summer, 2016: you have been called in to investigate a violent assault at an address in Putney, Southwest London. The person of interest was described by an eyewitness...

Whoa - we've had an amazing response to this so far, with literally hundreds of convention organizers getting in touch. We're going to start reviewing and responding to applications next week. Great to see such interest from conventions all over the world!

Cover art by Kasumi Lang.

Call of Cthulhu: The Sutra of Pale Leaves - Twin Suns Rising is coming in 2025. Forgotten for centuries, the Sutra of Pale Leaves has resurfaced in 1980s Japan—a time of excess and conspicuous consumption. In the right hands, the Sutra of Pale Leaves can remake the world... Cover art by...

Call of Cthulhu has officially come to the Virtual Tabletop platform Alchemy RPG, with a selection of titles now available on Alchemy’s Marketplace. Alchemy is the world's first virtual tabletop (VTT) built specifically for cinematic immersion and theater of the mind gameplay. Its scene-based...

If you have any questions about the Chaosium 50th Anniversary Convention Support Pack, feel free to ask here in this thread or contact us by email: conventions@chaosium.com

New Gamemaster Month is the annual month-long seminar in the form of twice-weekly posts, guiding prospective GMs up to and through their first game. Its organised by our friends at Monte Cook Games and kicked off this week! As one of the eight game companies taking part, our featured system is...

Coming in 2025 – Adventure in an Iceland of myth and legend! Age of Vikings transports you to medieval Iceland—a vibrant land on the edge of the known world, where Vikings seek honor and fame through adventure. This book contains everything you need to both play and run Age of Vikings! cover...

UPDATE: APPLICATIONS FOR THE 2025 CHAOSIUM 50TH ANNIVERSARY CONVENTION SUPPORT PACK CLOSE ON JANUARY 31ST AT 11.59PM PT. Attention convention organizers! Since the beginning of our hobby half a century ago, conventions big and small have been a vital part of a thriving tabletop gaming...

-- Our community content ambassadors Bridgett, Mark and Nick -- On Chaosium's behalf, our Community Content Ambassadors – Bridgett, Mark, and Nick – act as a first point-of-call and helpful sounding board for prospective Miskatonic Repository (Call of Cthulhu), Jonstown Compendium...

Get your badge for Chaosium Con Australia 2025 - June 27-29! The inaugural Chaosium Con Australia in 2024 was by all accounts a great success with over 125 events, local and international guests of honour, and very convivial atmosphere. We plan to replicate that success in 2025 and look forward...

Ab Chaos is the email newsletter for Chaosium fans, with information about our games, new products and special offers. The original Ab Chaos was an irregular newsletter brought out by Chaosium from 1990 - 1992, back in the days when if you wanted one you had to send in a SSAE (stamped...

Early Bird Badges for Chaosium Con Australia 2025 close soon! The prices are currently the same rate as Chaosium Con 2024, but due to increased costs we will be raising ticket prices on January 1st January 7th (when Aetherworks is back in the office). So here's your last chance to secure your...