Paris, 1789: Mythos Horrors during the French Revolution!The award-winning team from the Stream of Chaos were tossed into the terror of the French Revolution – and you can watch their tribulations on

Episode five of our blockbuster Call of Cthulhu actual play series is now up on YouTube!Outnumbered and outgunned, our investigators turn to extreme measure and strange allies... Featuring guest NPCs

Alone Against the Static is our latest solo Call of Cthulhu scenario. It's designed to be played by yourself, no Keeper required. That said, it – and all of our other critically acclaimed solo adventu

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 tha

-- 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 L

Have you checked out out The Dhole's House, a free 'online toolkit' for both Keepers and players of Call of Cthulhu? With it, you can create Call of Cthulhu investigators in minutes, or search the Cha

Following the success of their Masks of Nyarlathotep SoundPacks, our friends at Syrinscape are releasing full audio support for the thrilling Pulp Cthulhu adventures of The Two-Headed Serpent, chapter

Please vote for Call of Cthulhu in the ENNIES, the annual fan-based celebration of excellence in tabletop roleplaying gaming. Voting is open, and titles from Chaosium and our creative partners have re

Chaosium is taking part in the ENNIES "Dream Date" auction for Gen Con this year. All proceeds from the Dream Date auctions are used to fund the production of the ENNIE Awards each year. Chaosium is i

Call of Cthulhu's Horror on the Orient Express has long been revered as one of the most iconic and acclaimed horror campaigns in tabletop roleplaying — so we're very excited that a new board game adap

Episode four of our blockbuster Call of Cthulhu actual play series is now up on YouTube!When every clue points squarely at the supernatural, our investigators are forced to contend directly with force

-- releasing in December 2024 --Cthulhu by Gaslight: Investigator’s GuideAdventure, Mystery, & Horror in the 1890sThe 1880s—Victorian England. Mystery and adventure in fog-shrouded streets and alleywa