Best Lovecraftian Games on Steam

Lovecraftian horror is the hardest kind to put in a game, because the whole point is that the thing frightening you cannot be fought and should not really be looked at. Most attempts settle for tentacles and call it a day. The ones worth your time do something harder: they make knowledge itself the threat, so that every clue you dig up costs you something, and the sanity meter stops being a gimmick and starts being a budget you are spending on understanding. For completionists that design has a pleasant side effect. These games are built around exhausting every option, reading every note and reaching every ending, which is exactly what a 100 percent asks for anyway. These are the cosmic horror games on Steam most worth losing your mind to, ranked on how well the dread holds up once you know what is down there.

1

Darkest Dungeon

The purest expression of the idea on this list: an expedition roguelike where stress does more damage than monsters and your heroes acquire the flaws they earn. 126 achievements, the biggest list here by a distance, and a genuinely long haul because several want specific bosses beaten with specific party conditions.

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2

DREDGE

A fishing game where the horror creeps in through the mechanics rather than the story, since staying out past dark is always the profitable choice and always the wrong one. 60 achievements, most of them tied to filling the encyclopedia, which makes the completion feel like the game rather than a chore bolted onto it.

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3

SUNLESS SEA

Failbetter turns the Lovecraftian ocean into a text-heavy roguelike where fuel, food and terror are three separate clocks running against you. 54 achievements, and the deaths are the point: each captain hands the next one a little more of the map and a lot more context.

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4

Call of Cthulhu

The most straightforwardly faithful adaptation on the page, an investigation adventure built on interrogation, reconstruction and a sanity system that quietly edits what you are allowed to perceive. 49 achievements, several tied to endings, so plan your saves before the final act.

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5

Call of the Sea

The gentlest entry here and a deliberate one, trading dread for wonder while keeping the cosmic scale intact. It is a first-person puzzle adventure about a woman following her husband expedition, and its 34 achievements are approachable enough to be a good first full clear in the genre.

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6

Sunless Skies: Sovereign Edition

The follow-up trades the underground ocean for a sky full of dead stars, with tighter combat and a cleaner structure than its predecessor. 31 achievements, and the Sovereign Edition rework means it is the friendlier of the two Failbetter games to actually finish.

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7

Conarium

A direct sequel in spirit to At the Mountains of Madness, set in an Antarctic research station after the experiment has already gone wrong. 26 achievements on a short, atmospheric game, which makes this one of the quickest completions on the list.

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8

Moons of Madness

Cosmic horror relocated to a Mars research base, so the isolation is literal and the unreliable narration has somewhere genuinely inescapable to happen. 23 achievements across a compact, mostly linear run.

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9

Stygian: Reign of the Old Ones

A turn-based CRPG set after the stars have already come right, where character builds are partly defined by which belief system keeps you sane. 98 achievements, and the build variety means several of them push you toward parties you would not otherwise assemble.

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10

The Sinking City 2

A flooded city investigation with an emphasis on piecing conclusions together yourself rather than being handed them. 23 achievements, the smallest list on this page, so it is a short completion next to the roguelikes and CRPGs above it.

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Updated 2026-09-04. Every game links to its full SteamVault page with achievement stats, rarity and community completion times.