Universe

Arkham Horror

Some doors in Arkham were never meant to be opened, and the town keeps opening them anyway. Here, in a drowsing Massachusetts mill town in the 1920s — steeple, streetcar, the grey Miskatonic sliding out to the sea — the ordinary crust of the world wears thin. This is the shared setting of Fantasy Flight's Arkham Horror Files games, drawn from the Cthulhu Mythos of H. P. Lovecraft: a country of Innsmouth's damp harbors, Dunwich's crooked hills, and a university whose rarest books should have stayed locked. Its heroes are not champions but investigators — a reporter, a professor, a card sharp, a lapsed occultist — who notice the wrongness first and pay for the noticing. The fiction, published by Aconyte Books, is a shared world worked by many hands. Graham McNeill, Josh Reynolds, Rosemary Jones, Jonathan Green, Richard Lee Byers and others each take up a corner of it, and the volumes gather into loose sequences — Dark Waters, The Lord of Nightmares, The Sanford Files, The Drowned City — beside a run of choose-your-path Investigators gamebooks that press the flashlight into your own hand. There is no single spine to climb: each book, or short cycle, stands largely on its own, sharing streets and recurring faces rather than one unbroken plot. What distinguishes it is scale, and the smallness of those who face it. The threats are cosmic and indifferent — sleeping Ancient Ones, the cults that would wake them — yet the telling stays close to frayed nerves, the slow erosion of sanity, and small brave choices made by lamplight. Begin wherever a premise beckons; the standalone novels each open the door cleanly, and publication order is the only sequence that matters, for no authoritative path binds them.

Summary by Loreful, from public sources

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Branches

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Four ways in. Pick the one that sounds like you.

The map

Arkham Horror at the centre, 6 branches around it.

Stats

What this universe published, when, and what it is made of.

57 works · 2011–2026 · busiest 2022 (17 works)

Empty columns are silent years — nothing published.

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By decade

  • 2010s12
  • 2020s45

Shape

26 novels · 7 novellas · 7 novelettes · 10 short stories · 4 anthologies · 3 gamebooks

31 authors

reads like:horrormurder investigationnorth americaearly 20th centuryeerieadult

Mood

Grim and intense: 95% of this universe's placed works, the catalog's 46%.

this universe · the catalog · one dot = one book40 of 57 works carry a tone

Edges of the map

The whole universe

Every work, three ways to look at it.

Series and publication data from ISFDB, CC BY 4.0. Branch grouping is derived, not curated.