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Chaosium was founded by visionary game designer Greg Stafford in 1975. For more than forty years, Chaosium has captivated gamers, readers and mythic adventurers worldwide. Its award-winning roleplaying games, boardgames and fiction have been acclaimed as some of the most engaging and innovative of all time.
Horror Roleplaying in the Worlds of H.P. LovecraftThe Great Old Ones ruled the earth aeons before the rise of humankind. Originally they came from the gulfs of space and were cast down by even greater beings. Remains of their cyclopean cities and forbidden knowledge can still be found on remote islands in the Pacific, buried amid the shifting sands of vast deserts, and in the frigid recesses... [click here for more]
2022 ENnie Award nominee for Best Supplement
Cthulhu Calls!
At long last, the intricacies of the nefarious Cthulhu cult are revealed!
What’s Inside?
Cults of Cthulhu gives you the rules to inject fully-realized and unique Cthulhu cults directly into your campaigns, and create your own antagonists. The tome also contains three scenarios featuring insidious... [click here for more]
Death and Discovery in the Vermont Hills!
In 1929, a student died during an expedition in the Vermont Hills. One year later, the Miskatonic University sent another team on the same expedition…
It's time to harvest.
What's Inside?
First released as a six-scenario Organized Play series, A Time to Harvest is available now for the first time in a complete and updated tome. The campaign... [click here for more]
The Mythos Comes to Jane Austen’s England!
Regency England: a time of social niceties, grand balls, romantic intrigues, and disappointments—as described in the novels of Jane Austen. Through the lens of the Cthulhu Mythos, horrors weave themselves into the hearts of everyday Georgians—from the richest to the poorest.
What's Inside
Regency Cthulhu: Dark Designs in Jane Austen’s England... [click here for more]
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