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Chaosium is pleased to announce the release of the Basic Roleplaying System Reference Document (SRD).The Basic Roleplaying SRD is based on Basic Roleplaying, the simple, fast, and elegant skill-based percentile system that is the core of most Chaosium roleplaying games, including Call of C … read more

Ann Arbor, MI, November 30, 2019—Chaosium Inc. and author Ben Aaronovitch are pleased to announce that Chaosium has acquired the rights to produce the Rivers of London Roleplaying Game, based on Aaronovitch’s best-selling urban fantasy fiction chronicling the world of the Folly. The game will … read more

For the next 12 days, some 362 Chaosium titles are 25% off in DriveThruRPG's Christmas in July Sale.This includes many Call of Cthulhu Classic, RuneQuest Classic, 7th Sea, Pendragon, HeroQuest, and BRP titles, and the following Call of Cthulhu 7th edition titles: Cold Harvest, Cthulhu Thro … read more

Chaosium is pleased to announce award-winning RPG designer Chris Spivey will be developing a new BRP-based science fiction line to add to the company's suite of roleplaying game brands. Last year Spivey's Darker Hue Studios produced the licensed Call of Cthulhu/Trail of Cthulhu supplement& … read more

Chaosium releases are notable for their high quality art and cartography. At the 2017 ENnies, Chaosium releases won awards for Best Cover Art (gold), Best Interior Art (silver), Best Cartography (gold) and Best Production Values (gold), among others. We strive to maintain this award-winning sta … read more

At its heart, Chaosium is a roleplaying game company. Since RuneQuest came out in 1978 and Call of Cthulhu followed in 1981 we've been producing award-winning roleplaying games with artistic integrity. The who's who of RPG writers have all contributed to make our games great. We'd love for you to jo … read more

If Facebook's your thing, come join us in the Chaosium tribe over there: 26,000 chaos cultists now!You can also be part of the tribe on G+ and through our forums at BRP Central, or follow Chaosium on Twitter. However you do it, let's create mythic stories together! … read more

To all members of the Chaosium tribe, here's the deal about purchasing products direct from our website, Chaosium.com:—All products come with the PDF included in the price—If the PDF is released first, you'll get the full price of the PDF off as a discount when the print version comes out—We have st … read more