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Out now on Foundry VTT! The Call of Cthulhu Core Content package contains everything you need to play Call of Cthulhu on Foundry including lethal weapons, forbidden tomes, arcane spells, eldritch horrors, and more! Armor & Weapons: All 100+ weapons, armor, and alien devices in the&nb … read more

Miskatonic Repository Convention is the free, fan-run, three-day virtual convention celebrating independently-created Call of Cthulhu content in the  Miskatonic Repository, Chaosium's community content platform at DriveThruRPG. It's back for the sixth year running, with more games, more panel … read more

Join Chaosium's Community Coordinator Bridgett Jeffries as she hosts the AMA for Call of Cthulhu – The Sutra of Pale Leaves: Carcosa Manifest, which will be released later this month. Bridgett's guests include Keris McDonald, Andrew Logan Montgomery, and Jason Sheets.  Get your copy of T … read more

We've just opened the restricted section of the library...All new Call of Cthulhu collector editions are now available for Pulp Cthulhu, The Grand Grimoire of Cthulhu Mythos Magic, and the epic Masks of Nyarlathotep!Browse now: https://buff.ly/63Folel … read more

Join the fun (and madness) of the free online Miskatonic Repository Con 2025 by submitting your Call of Cthulhu games now through October 5th. Player sign-ups open September 20th. If you're a Call of Cthulhu Keeper and you have published on the Miskatonic Repository, are thinking about publishing o … read more

Significant Streams is a feature on the Chaosium news blog where we highlight actual play streams, podcasts, and YouTube channels featuring Chaosium games that we think are worth checking out. Push the Roll is a new Call of Cthulhu podcast starring Ross Bryant (Dropout TV, Glass Cannon Po … read more

This year marks Chaosium’s 50th anniversary, and what better way to celebrate than by inviting you to a hauntingly immersive experience? In collaboration with our friends The Game Theatre, we're proud to present Cthulhu in a Castle, a brand-new three-day Call of Cthulhu RPG vacation event&mda … read more

Enter London's dark heart with these grim scenarios highlighting the underbelly of the gaslit city... Cthulhu by Gaslight: Dust & Blood is coming soon! . Mystery & Horror in the Victorian Age Cthulhu by Gaslight takes the Call of Cthulhu roleplaying game to the fog-shroud … read more