Recent content by Michael O'Brien

Set in the picturesque state of Vermont at the beginning of the 1930s, A Time to Harvest is a six-part campaign centered on the valley surrounding the sleeping town of Cobb's Corners — and it's now available on Roll20! A Time To Harvest contains new rules and advice for creating student...

Add depth and realism to your game with Syrinscape’s high-quality Call of Cthulhu sound effects — these are the SoundPacks for Call of Cthulhu -The Sutra of Pale Leaves: Twin Suns Rising. An adventure that takes you to 1980’s Japan. With new sound design and music tracks created for this utterly...

This January, Chaosium's Michael O'Brien and Susan O'Brien are special guests at Christmas on the Clocktower, a festive weekend of games, a Christmas play, and the classic social deduction game Blood on the Clocktower (the #1 Party Game on Board Game Geek). MOB and Susan will also be bringing...

On the Australia Day weekend (24-26 Jan 2026) Chaosium will be back in the national capital once again for Can Con, a long-standing event in the Australian convention schedule. As part of the Tabletop gaming program we're running in partnership with our friends at Aetherworks, we're offering...

What video gamers are saying about RuneQuest Warlords The 'Unnatural Selections' series is our regular round up of notable Chaosium reviews worth a look. RuneQuest: Warlords is the newly-released battle-scale turn-based strategy video game set in the RuneQuest universe. Immerse yourself in...

Our community manager Bridgett Jeffries is interviewing GMs from our Cult of Chaos gamemaster program and creators for our community content programs at DriveThruRPG - the Miskatonic Repository (Call of Cthulhu), Jonstown Compendium (RuneQuest-Glorantha), and Companions of Arthur (Pendragon)...

Visionary game designer Greg Stafford always said that the Pendragon roleplaying game was his magnum opus. In its Arthurian bones, Pendragon is much the same as it was when it debuted as a box set 40 years ago, in 1985. The game featured many innovations and ways to inject roleplaying games...

We're excited to release four new titles under the Pendragon banner! Pendragon: Magnum Opus Edition This special collector’s edition of the Pendragon Core Rulebook is bound in a rich red-and-gold leatherette, featuring a quote from designer Greg Stafford in gold text on the back cover. This...

Some screenshots from RuneQuest Warlords. Every biome, settlement, and creature has been meticulously crafted to reflect the history, mythology, and artistry of Glorantha, bringing it alive. Enjoy the game with a launch discount of 10% on Steam – Let the battle begin!

9TH DECEMBER 2025, ANN ARBOR, MI: We're thrilled to announce RuneQuest: Warlords, a battle-scale turn-based strategy game set in the legendary RuneQuest universe, was officially released on Steam today. Developed under license by our friends at Slitherine, the RuneQuest: Warlords video game...

Save the date! Chaosium Con EU is returning in 2026! Dates: Friday 30th October - Sunday 1st November 2026 Location: Uphagen Manor / Gdańsk, Poland (same venue as 2025) Badge sales, GM event submission, and hotel booking details coming soon!

Hallelujah! - CREDO is at the printer; so today we're filming the How to Play video. Our game of dueling dogmas will be out in 2026.

By Pedro Ziviani, author of Age of Vikings An Age of Vikings campaign is not only comprised of epic sagas but also memorable interactions with NPCs, social trouble, and even situations where your Farming skill could be of critical importance. In this article we explore how to bring the heroes'...

Chaosium President Rick Meints shares stories from a life-time as a collector of all things Chaosium Sometimes I feel my life has two distinct aspects that only occasionally intertwine: Rick the Scout, and Rick the Chaosium guy. In general, the overlap has always been there, as I am a Game...

And there's an AMA coming! Submit your questions here: Age of Vikings GM Screen AMA w/ Neil Robinson and Jason Durall