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Produced under license by our friends The H.P. Lovecraft Historical Society, The Arkham Investigator's Wallet has received two nominations in the 2024 ENNIES Awards: Best Aid/Accessory Non-Digital and Best Production Values. All up Chaosium and our creative partners, licensees and com … read more

Unveil the secrets of the legend-haunted city! - Chaosium Unveiled takes a look at the signature setting for Call of Cthulhu:Available now!"This is the gold standard for what an RPG supplement should be... simply put, a triumph." — TechRaptor. Full colour hardcover (price includes PDF) –  … read more

Jon Hook and Seth Skorkowsky had Call of Cthulhu creative director Mike Mason as their guest on their Modern Mythos podcast. They talk with Mike about Chaosium's new Arkham book, the first in the new Arkham Unveiled series; about Eldritch Stories, Mike's new podcast tha … read more

The 'Unnatural Selections' series is our regular round up of notable Chaosium reviews worth a look. It's no exaggeration to say readers and reviewers alike love our new Call of Cthulhu: Arkham book, with TechRaptor's comprehensive review concluding, "This is the gold standard for what … read more

In celebration of the release of Call of Cthulhu: Arkham Bridgett Jeffries's Symphony Entertainment is playing Call of Cthulhu live on March 23rd. Join Keeper Evan Perlman and investigators Bridgett Jeffries, Bucho Rodenberger, and special guest investigator, Call of Cthulhu's creative director … read more

The sixth and final episode of our blockbuster Call of Cthulhu actual play series is now up on YouTube!As the world falls to chaos around them, our investigators make one last desperate attempt to save Arkham...Starring Mark Meer as Keeper of Arcane Lore, and Investigators Patrick Logan, Josephine M … read more

Download for free! – maps and handouts for Call of Cthulhu: Arkham, the definitive guide to the signature setting of Call of Cthulhu. This includes the Player and Keeper Maps of the haunted city, Arkham Outskirts Map, and Massachusetts 1922 Map. Plus the complete four page Arkham Adve … read more

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 Belinda Cornish - who is also one of the co-writers of the show! - and Becca Scott.Graveya … read more