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Call of Cthulhu: Arkham - PDF

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Unveil the secrets of the legend-haunted city!

Chaosium Unveiled: Inside Arkham

Watch the unveiling video to see the book for yourself. Remember that you get the PDF when getting the physical copy.

On the streets of Arkham, the threat of the Cthulhu Mythos is ever-present. A quiet town in New England—home to the prestigious Miskatonic University—Arkham’s underbelly hides criminals, speakeasies, and a witch-cursed history.

What’s Inside?

Call of Cthulhu: Arkham is the definitive guide to the signature setting of Call of Cthulhu.

A Sandbox Setting

Training at the Arkham Station on a wintery day

With 290 locations detailed across 9 neighborhoods, Call of Cthulhu: Arkham is the perfect supplement for a sandbox-style campaign. The book also contains Gossip & Rumors to use as scenario seeds, and over 80 fully-detailed NPCs with their own secrets to discover—investigators will never be without a lead to follow up on!

Some foul magicks being cast in Arkham

New Rules & Game Aids

Map showing Arkham, major features, and the tram line

The book contains two Arkham city map posters (one designed for players, and one marked with hidden information for the Keeper!), as well as a poster-sized copy of the front page of the Arkham Advertiser—the perfect prop for any game set in Arkham. Call of Cthulhu: Arkham also introduces new rules and skills for Arkham investigators.

The front page of a 1920s Arkham Newspaper

The Definitive Guide To Arkham

A dapper man holding 2 glasses and a bottle of champagne is with a beautiful woman. He wears the Yellow Sign.

Call of Cthulhu: Arkham is more than just a supplement for the Call of Cthulhu roleplaying game. With a richly described history of both Arkham and the famous Miskatonic University, street and neighborhood maps, and hundreds of locations, this book is perfect for fans of mythos fiction, as well as any board games, card games, or stories set in the fabled city of Arkham.

A scaly humanoid in a brick sewer tunnel

: Call of Cthulhu: Arkham contains mature themes and is intended for mature players.

This supplement is part of the Arkham Unveiled line and is designed for use with both the Call of Cthulhu roleplaying game and the Pulp Cthulhu supplement, both available separately.

Downloads for this Product

Arkam Advertiser

What The Critics Say

  • "Call of Cthulhu: Arkham is a triumph, achieving a near-perfect balance between providing fine detail and allowing for Keeper improvisation. It is, all at the same time, a serious game reference, a sandbox, and a source of scenario seeds too numerous to mention."

    — Stygian Muse, Call of Cthulhu: Arkham.

  • "Pretty much every location here has a potential use in a campaign – whether as a target of investigation, a source of employment, a useful resource, or in some other manner... [Call of Cthulhu: Arkham] really takes Keith Herber’s vision forward by making it easier than ever to make use of this material in practice."

    — Refereeing and Reflection, Supplement Supplemental! (Arkham’s Almanac).

  • "Really cool... everything you want from a setting book for Call of Cthulhu"

    — Gamer’s Haunt, A Quick Look at Call of Cthulhu: Arkham.

  • "This is the gold standard for what an RPG supplement should be." “Simply put, a triumph... It perfectly captures that 1920s Americana small-town feel, while also letting all the wonderful Lovecraftian weirdness seep into every fissure and crack. This is a perfectly thought out, well-developed product that has clearly had so much love go into it. A triumph, there's no other way to put it. If you run games of Call of Cthulhu, you need this book."

    — TechRaptor, Call of Cthulhu: Arkham Review - Supplemental Strangeness.

  • "A truly impressive release for Call of Cthulhu."

    — Reviews from R'lyeh., Assessing Arkham.

  • Chaosium, publishers of Call of Cthulhu, have captured Arkham’s beating heart in a new supplement out now, titled, fittingly enough, Call of Cthulhu: Arkham.

    — Bell of Lost Souls, Call Of Cthulhu: Arkham’ Opens The Gates To The Infamous Haunted City.

  • "If you are a Keeper for Call of Cthulhu you need to add the Arkham book immediately to your collection, by yesterday preferably… You absolutely cannot miss this supplement. Another truly high-quality book that Chaosium is known for."

    — Board Game Quest, Call of Cthulhu – Arkham Supplement Review.

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Year Released:
Call of Cthulhu 7th Edition
Full Color PDF
Page Count:
Mike Mason, Keith Herber, Bret Kramer
Cover Artist:
Loïc Muzy
Interior Artists:
Helge C Balzer, Irene Cano with Kasia Smalara, Nicholas Grey, Joel Chaim Holtzman, Ania Jarmołowska, François Launet, Wayne Miller, Loïc Muzy, Martyna Starczewska, John Sumrow, Aleksander Zawada
Layout and Graphic Design:
Adam Szelążek, Loïc Muzy
Matt Ryan
Andrew Leman, Sean Branney
  • Full Star Full Star Full Star Full Star Full Star 5
    Arkham sourcebook

    Posted by Ben on 14th Mar 2024

    Great book, everything I had hoped for! Good as background for existing adventures or for those interested in Lovecraft's most famous New England setting.