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CALL OF CTHULHU LIVE presale tickets go live at 10am GMT Thursday 27 February and will run until 9am GMT Friday 28 February. Sign up for the presale at the link! https://www.aegpresents.co.uk/event/call-of-cthulhu-live/

Join Keeper of Arcane Lore Mark Meer and an all-star cast of Investigators as they confront the terrors of the Cthulhu Mythos in Call of Cthulhu Live in May and June 2025. Don't miss out on the world's foremost tabletop game of horror and mystery, live on stage in Birmingham, Brighton, London...

QuestWorlds offers a complete, rules-light system focussed on resolving in-play conflicts quickly and easily. It centers around a simple core mechanic and optional rules that allow you to customize your game to suit any setting or genre. Now available in print format (softcover) at...

The page has now been updated to what we intended to have there on the day QuestWorlds was released. https://www.chaosium.com/questworlds-system-reference-document/

Cool, another indie release using the QuestWorlds engine! This time it's sci-fi, "that lets you play in settings inspired by Firefly, Blake's 7, and Cowboy Bebop. You play down-on-your-luck characters flying a ship, living from job to job while evading the influence of the Alliance, a...

Our incredibly popular RuneQuest Humble Bundle is back! And in addition to the 18 titles in the original bundle, this special encore edition also includes the Meints Index to Glorantha, plus a 15% discount code valid site-wide at Chaosium.com. Discover sword, sandal, and sorcery in RuneQuest—a...

As @overgeeked suspected and @Ian Cooper has confirmed above, the text on that page was out-of-date and referred to an older, OGL license we have replaced with the ORC. There are no restrictions to public domain material under the ORC. We will update that page. In the mean time, under the ORC...

UPDATE: And boom, just like that we've sailed past 10,000, out into the black seas of infinity. Welcome aboard if you've just joined us!

Who knows the end. What has risen may sink, and what has sunk may rise... Whoa - we're just about to hit 10,000 followers over at Blue Sky, a popular alternative to that other place. Come join us! @chaosium.bsky.social

The Two-Headed Serpent is an action-packed, globe-spanning, and high-octane campaign set in the 1930s for Pulp Cthulhu. The heroes face the sinister conspiracies of an ancient race of monsters hell-bent on taking back a world that was once theirs. And now it is available on Roll20 VTT! Working...

QuestWorlds Q&A rescheduled to February 27th Please note, due to a family bereavement, our forthcoming QuestWorlds Q&A has been rescheduled to February 27th. February 27 4PM ET | 9PM GMT | February 28 8AM AET Twitch.tv/ChaosiumInc Ask all your burning questions about the newly-released...

In the 1970s, Chaosium founder Greg Stafford first used the term "heroquest" to describe a transformative journey in which a quester enters the realm of the gods to reenact a myth, returning with gifts or special knowledge, and later began designing a roleplaying game exploring those themes...

The 'Unnatural Selections' series is our regular round up of notable Chaosium reviews worth a look. Reviewers and fans have described our recent new Call of Cthulhu releases with such terms as "industry-leading", "the gold standard" and "must-have". This warms the hearts of our small but...

After examining numerous ways forward, we have decided to cancel and refund Kickstarter backers for outstanding items in the 7th Sea Khitai Kickstarter. We are offering two main refund options: refund via paypal or refund via chaosium.com store credit. Paypal refunds are on a...

Spec-Ops Magica Crisis, the first 'indy' Genre Pack for Questworlds is out at Itch.io SPEC-OPS MAGICA CRISIS is the first ‘indy’ Genre Pack for the newly-released QuestWorlds roleplaying game. Set in modern Japan you play a student at an elite magic school. Able to wield the magical power of...

Does Love Forgive? is a collection of two special scenarios for Call of Cthulhu for one Keeper and one player. And it's now available at Roll20, just in time for Valentine's Day! Play Does Love Forgive? with someone special in your life: both adventures are perfect for a fun evening of gaming...

A Setting-Agnostic Roleplaying System QuestWorlds is a rules engine designed for play in cinematic, larger-than-life settings inspired by classic pulps, comic books, and weird fiction. What's Inside QuestWorlds is a self-contained roleplaying system. No other books are required to play...

Call of Cthulhu has come to Foundry Virtual Tabletop! The Call of Cthulhu Starter Set on Foundry VTT contains everything you need to play the world’s best roleplaying game of horror, mystery and investigation! Call of Cthulhu has been specially enhanced for Foundry Virtual Tabletop, with...

Here is Part Two of my interview with Bud and Griff on their podcast. I talk about some of exciting things we've got planned for Chaosium's 50th anniversary. I also divulge the one member of the Chaosium team who, long ago, Greg Stafford told the fabled Secret of the God Learners to (perhaps not...

Perfect for Valentine's Day! A special bundle of One-on-One Call of Cthulhu scenarios designed for two: one Keeper and one Investigator! These adventures are all perfect for a fun evening of gaming for two people. The Miskatonic Repository One-on-One Scenario Bundle at DriveThruRPG features...