In 2005, Chaosium is celebrated our 30th anniversary. In 2006, Call of Cthulhu celebrated it’s 25th anniversary.

Here is a brief look at Chaosium's worldview and what we hope to achieve through our publications.

Chaosium publishes several roleplaying games based upon literary sources and a line of Lovecraftian fiction anthologies.

Here's a partial list of the awards we've won over the years.

Here's a brief bio for our President, Charlie Krank. He also handles layout, accounting, purchasing, collections, invoicing, phone-answering, licensee relations, and kitchen remodeling, et al.

Here's a brief bio for Lynn Willis, our Editor-in-Chief and the constant force behind Call of Cthulhu.

Call of Cthulhu is a horror roleplaying game based upon the writings of Howard Phillips Lovecraft and a few others. Lovecraft wrote during the 1920s and 1930s, and he became a cult figure before dying in 1937.

The game is an evolving interaction between players (in the guise of characters unraveling a mystery) and the keeper, who presents the world in which the mystery occurs.

Each player takes on one or more investigator personas. During the game, the player attempts to speak and act in terms of those personalities.

The keeper becomes the game moderator. Perhaps using a published scenario, or creating one of his or her own, the keeper knows the entire plot of the story and presents it during play.

Gaming is social. Roleplaying brings together a number of people in order to form a communal fantasy often more verdant and imaginative than one person alone could ever create.

The parts of the Cthulhu Mythos originated by Lovecraft himself define this game. Certain concepts and creations by some of Lovecraft's friends are also used.

The purpose of horror roleplaying is to have a good time. Right down to pounding hearts and sweating brows, it's part of human nature to find pleasure in being scared, as long as being scared is not for real.

Here you can download a PDF copy of our Call of Cthulhu Quickstart Rules.

The table of contents for the epic campaign and sourcebook

Beyond the Mountains of Madness continues the story begun in Lovecraft’s novel of the Antarctic. It is the tale of the Stark-weather-Moore Expedition of 1933.

What the world knows about the M.U. Expedition to Antarctica, 1930–31. Most of the following came to the world via the Arkham Advertiser’s powerful radio installation at Kingsport Head, Massachusetts.

Keepers may be leery about introducing some of the folksy elements of voodoo into a campaign which has led players to believe that sanity-blasting revelations await their investigators around every corner.

IN 50 CE, ROME IS A BUSTLING CITY of over one million inhabitants. People flow into it from the provinces every day in the hopes of striking it rich, or at least earning a decent wage. Some succeed, but more often they end up destitute in the slums.

We're always looking for monographs to publish, for both Basic Roleplaying and Call of Cthulhu. Chaosium monographs are a means for you to present your ideas to a discriminating roleplaying audience.

Here you discover our requirements for you to submit a Call of Cthulhu roleplaying game proposal. Finishing a full book can take a great deal of time and work (and patience), but there is no feeling like seeing a published book that you have written.

Here are details concerning submitting your artwork to Chaosium.

Submitting short stories and novels to Chaosium.

In addition to Call of Cthulhu, Chaosium publishes Basic Roleplaying. Here are notes about writing for BRP.

Chaosium may consider your merchandise for our online catalog.

We’re certainly willing to consider submissions for inclusion on Chaosium.com, including Tuesday Terribles.

Some ideas defy categorization.

What are Chaos Bucks? How can I get some? Can I give them to my buddies? Will nightgaunts carry me away to some far-off land?

Chaosium Inc. is pleased to allow fans and others to use our trademarks and logos on their web sites as long as certain principles are met.

We know that evil monsters and nefarious henchmen would love to know all secrets. We work to foil them at every turn!

Chaosium strives to ship your order quickly and completely. Chaosium can ship your order to any place in the world reachable by the U.S. Postal service or by UPS.

We like having happy, happy customers. This section details our warranty, and what you should do in the event that the post office did something awful to your package.