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Atomic-Age Cthulhu: Mythos Horror in the 1950s is sourcebook by Chaosium for their Call of Cthulhu roleplaying game.


Set to the backdrop of a post-World War III civilisation, Atomic-Age Cthulhu offers background and tips for playing in this brave new world. It also contains new investigator skills and professions suitable for the times, along with seven ready-to-play scenarios allowing Keepers to get started straight away.

Atomic-Age Cthulhu was written by Brian M. Sammons, Christopher Smith Adair, Matt Sanborn, Oscar Rios, Tom Lynch, Brian Courtemanche and Michael Dziesinski with cover art supplied by Caleb Cleveland, and runs to 230 pages.

Publication History

First released in February 2013, Atomic-Age Cthulhu is available in both softcover print and digital (PDF) formats.

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