Best Co-op Horror Games on Steam

Horror is usually a solitary genre, and adding friends to it should ruin the tension completely. In practice it does the opposite, because a game that can separate you from the group has something scarier to work with than a game that only ever had you. The list below runs from ghost-hunting games built entirely around bad voice comms to co-op shooters where the horror is mostly volume of teeth. Achievement lists here skew towards team objectives and full-run completions, so check the current player numbers on the older entries before you commit to one.

1

Phasmophobia

The one that made proximity voice chat a horror mechanic. Four players, one haunted building, and equipment that tells you just enough to argue about. 54 achievements, many tied to correctly identifying ghost types rather than surviving.

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2

Left 4 Dead 2

Still the template for four-player co-op horror pacing, and still played. 101 achievements, a good number of which need specific team coordination, which is exactly what makes it a good completion target with a regular group.

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3

Dead by Daylight

Asymmetric rather than co-operative in the usual sense: four survivors against one player-controlled killer. Its 311 achievements are the biggest list on this page by a distance, and many are locked behind specific characters.

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4

GTFO

The hardest game here. Four players descending into a complex where noise is lethal and stealth is mandatory, with expeditions that expect you to fail and replan. 57 achievements, weighted towards actually clearing levels.

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5

The Forest

Survival horror where the horror lives in the caves and the survival happens above them. Building a base with friends and then watching it get tested at night is the whole appeal. 45 achievements.

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6

Killing Floor 2

Wave-based co-op against a bestiary that is more body horror than zombie, with a perk system deep enough to carry a long completion. 307 achievements, so treat it as a long-term project rather than a weekend.

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7

DEVOUR

Short, cheap, loud co-op ritual horror built for four players who will shout at each other. 131 achievements across its maps and difficulty tiers, which is far more than its price suggests.

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8

Content Warning

You and three friends film a horror video underground and try to get back with the footage. The camera is the objective, which changes how you behave around danger. 48 achievements.

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9

Back 4 Blood

A card-driven take on the four-player zombie shooter, where deck building changes each run rather than just the difficulty. 93 achievements, with several tied to specific cleaner characters.

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10

World War Z

The one about volume: hundreds of bodies climbing over each other at once, which is a different kind of unsettling to a haunted house. 35 achievements, the shortest list here and the most approachable.

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Updated 2026-09-21. Every game links to its full SteamVault page with achievement stats, rarity and community completion times.