Somnium Tenebris is a 5-player, investigative horror game set in a Lovecraftian world. Explore the depths of the ocean with your team as you uncover evidence in your efforts to identify the megalithic creature... and escape before it's too late.
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No game lists Somnium Tenebris as one of its co-op favourites yet, so here are the closest matches by Steam tags instead.
Eresys is a co-op horror game inspired from the works of H.P. Lovecraft. Teamwork is a key as players take on the roles of four cultists and face the terrifying entities together. Dynamic AI mechanics and unique enemies, Eresys promises to deliver a thrilling and spine-chilling gaming experience.
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Solo or up to 8 players. Get rid of your employer's failed experiments in abandoned underwater labs. Navigate your submarine, avoid abyssal terrors, and remove all corpses.
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Subnautica 2 is an underwater survival adventure set on an all-new alien world, developed by Unknown Worlds. Play alone or with friends in 4-player co-op. Adapt to survive by building custom bases and crafting tools. Explore the unknown to uncover the mysteries hidden within the depths.
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Dive into an unforgiving underwater nightmare alone or with friends! Complete deadly missions for the Union in the terrifying depths of Gornak. Repair broken pipes, replace defective equipment, and gather scattered body parts to pay off your debt... if the local fauna doesn't get you first.
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Wreck Below is an underwater horror game where you dismantle wrecks and avoid the unseen threat of The Arbiter.
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Embark on a co-op survival journey for 1-5 players through a post-apocalyptic Lovecraftian world! Command and evolve a living, monstrous train, craft weapons, build a mobile base, gain powers, and face the Great Old Ones. Explore an ever-changing world, hold on to your sanity, and ascend to godhood!
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In up to four player co-op, form a group of explorers searching for treasure. In this cursed jungle, danger is everywhere and monstrous creatures alter reality. Stay clear-headed and tame the jungle before it devours you…
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A co-op horror game like no other... Play with 1-8 players online as you solve puzzles, collect items and run from the horrors that lie within. Follow in the footsteps of Joan in the story mode or tackle procedurally generated maps that scale with your level and bring a fresh experience each game..
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Exorcist Simulator is a 1‑4 player online co‑op horror where every play asks the same, terrible question: Will you cast out the Devil —or wear his skin?
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SHRIMP GAME: OVERKRILL is a solo or multiplayer third-person shooter RPG set in an abyssal realm. Pilot your SHRIMP platform to fight giant sea monsters, master elemental classes, and unearth secrets in a 6-person co-op campaign, or just krill your friends in multiplayer PVP!
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