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Encountering the King in Yellow in 1980s Japan Out now - The Sutra of Pale Leaves: Twin Suns Rising takes you to the Japan of the 1980s, an all-new setting for Call of Cthulhu. It is a time when the generations are at odds, yakuza gangs are thriving, and the traditional world is at war with...

From our friends Nightfall Games comes Claudia Christian's All The Cardinal's Men, the second book in their ENnies-nominated Musketeers vs. Cthulhu series. Musketeers vs Cthulhu is an officially licensed Call of Cthulhu setting melding the swashbuckling of The Three Musketeers legend with the...

We're excited to announce Blood on the Clocktower creator Steven Medway is a special guest at Chaosium Con Australia, coming up on June 27-29 at Moonee Valley Racing Club in Melbourne. Steven is Game Designer and CEO of The Pandemonium Institute, the Australian publisher of Blood on the...

Chaosium will be at PyrKon in Poland this weekend. One of Europe's biggest fan conventions, it takes place at the Poznań International Fair. Over 58,000 people attended last year. Chaosium's Laurence Finch, Michal Lisowski, Daria Pilarczyk, Martyna Starczewska and Ben Taylor will be joining the...

Free RPG Day is coming up on June 21st, and Chaosium is taking part! This year we're releasing the Basic Roleplaying Quickstart Rules. Powering some of the most influential and celebrated roleplaying games of all time, the Basic Roleplaying system is presented here as an easy-to-use, intuitive...

Chaosium's Michael O'Brien will be joining the Sons of Singularity, creators of The Sutra of Pale Leaves and Japanese Call of Cthulhu fans at KaijuCon in Nagoya, Japan next month. KaijuCon is Nagoya’s first dedicated tabletop and board gaming convention. Its mission is to build a welcoming...

For immediate release. Ann Arbor MI, Friday June 6th 2025 We're pleased to announce some new staffing changes: Neil Robinson, Chaosium’s chief operating officer (COO) has stepped up to the position of Chief Executive Officer (CEO), a new position in the company. As CEO, Neil leads the company...

Our Call of Cthulhu Live Tour of the UK is over! Over the past week-and-half we brought Call of Cthulhu actual play on stage to highly engaged and appreciative audiences in Birmingham, Brighton, London, Manchester, and Glasgow. It was by all accounts a tremendous success — thank you to...

Had a great time at the inaugural Chaosium Con UK? Want more Glorantha? Returning in 2025 to Birmingham in the UK, Glorantha Games is the one-day roleplaying convention dedicated to Greg Stafford’s world of Glorantha! Now at a venue that is not going to cost any left legs and has coffee and...

This is the Map of Iceland from our recent release Age of Vikings. It is by concept artist and illustrator Colby Richards. Colby's map of mythic Iceland is based off a map of Iceland made by 16th century cartographer Abraham Ortelius. This map comes folded with the Age of Vikings book. You can...

We're back with another AMA! This is for Call of Cthulhu: The Sutra of Pale Leaves - Twin Suns Rising, currently available to preorder with the hardback releasing on June 11th. And note, if you preorder now, you receive the PDF instantly! Join Chaosium's Mike Mason and Keris McDonald, and...

By Mark Morrison Pentecost was always an important day in the court of King Arthur: he was crowned at Pentecost, married Gwenever at Pentecost, and the vision of the Holy Grail first appeared on the eve of Pentecost. The Pentecostal Tournament and Feast was the highlight of the year at Camelot...

Do you know Carcosa? The Pale Prince awaits. Coming 2025... The first volume in our new 1980s Japan setting for Call of Cthulhu, The Sutra of Pale Leaves - Twin Suns Rising can be pre-ordered now! The hardback will be released on June 11, but if you preorder you receive the PDF instantly...

Chupacabracon is the premiere tabletop RPG and board game convention in central Texas. And Chaosium's Dustin Wright is once again returning as a guest of honor! The convention is run by nonprofit foundation Austin Creative Pathways benefiting Extra Life whose mission is to unite thousands of...

Encountering the King in Yellow in 1980s Japan Forgotten for centuries, the Sutra of Pale Leaves has resurfaced in 1980s Japan—a time of excess and conspicuous consumption. In the right hands, the Sutra of Pale Leaves can remake the world... The eagerly-awaited The Sutra of Pale Leaves - Twin...

Call of Cthulhu Live is a one-shot live actual play of the world's foremost game of horror and mystery! And we're taking it to five cities in the UK, starting later this week! Starring Mark Meer (Mass Effect), Samantha Béart (Baldur’s Gate 3), Jasper Cartwright (The Re-Slayer’s Take), Johnny...

Join Rivers of London creator Ben Aaronovitch and Chaosium creators Mike Mason, Lynne Hardy, Paul Fricker, Keris McDonald, Michael O'Brien, and Brian Holland for signing sessions at UK Games Expo in Birmingham: they'll be at the Chaosium booth at the times shown. And remember, we're playing...

The Madness at Geneva Lake is a Call of Cthulhu adventure that weaves a little-known chapter of TSR’s history into a tale of cosmic horror! First released at Gary Con 2025, this dread tale by Alyssa Faden and Gary Con founder Luke Gygax is set in 1891 on the snow-dusted shores of Lake Geneva...

Adventure in an Iceland of myth and legend! Hear the call of glory and honor, journey proud across your land free from the tyranny of kings and queens—enter the Age of Vikings! Adventure Awaits - Get your copy of Age of Vikings Today! Hardcover (price inc PDF): $59.99 Special leatherette -...

ANNO DOMINI 325: Under the watchful eye of the newly converted Emperor, Bishops from throughout the Roman Empire gather together at the city of Nicaea... Today, May 20th, is the 1700th anniversary of the Council of Nicaea. A fitting date to announce the long awaited return of a classic Chaosium...