
Subterror
Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.
If the tense and scary rhythm of Subsurface stuck with you, this helps. These co-op games are worth a look next. Plenty here let you team up if you like.
Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.
Tense, Scary, Replayable
Grab up to seven co-op friends, pilot a blind submarine by sonar to an abandoned lab, then swim in to haul out corpses for the shredder. The sub work forces teamwork, the wrecks supply the scares, and the whole shift feels tense, silly, and built for shouting over proximity chat.
Tense, Scary, Replayable
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.
Tense, Scary, Dark
Darkwater puts you and up to three co-op friends in a custom submarine trapped under the ice of an alien moon. One of you pilots, one works sonar, someone else patches leaks while torpedoes close in, then you dock and strip abandoned outposts for fuel on foot. It is tense, scrappy teamwork with naval battles, boarding raids and deep-sea horrors.
Tense, Scary, Replayable
Crew a leaky submarine with two to four co-op friends in a hand-drawn undersea trench that reshuffles every run. One of you pilots, one patches hull breaches, one loads torpedoes, and plans fall apart fast. Worth playing for the shared panic and the laugh when you save the ship anyway.
Tense, Scary, Replayable
A deep-sea exploration company sends you and your friends to investigate a research facility that has mysteriously gone silent. Face terrifying events together, survive as a team, and uncover the truth hidden within the depths.
Tense, Scary, Dark
What'Sub is a 1–4+ player Co-op Extraction "Looter". Band together as a crew of rugged submarine pirates, on a deep-sea quest for power and glory! Loot the ocean for treasure, fulfill requests for the odd denizens of the Subyard, upgrade your submarine, and above all, dive deeper into The Well.
Tense, Replayable, Atmospheric
ABYSS is a challenging multiplayer co-op horror game where you and your crewmates must operate an old submarine through narrow trenches, scavenging scrap from the ocean floor and avoiding the denizens that lurk in the deep. But not all is as it seems, for traitors may be lurking around every corner.
Tense, Scary, Dark
Trapped in a sinking submarine, two players must communicate through walkie-talkies to solve puzzles, complete tasks, navigate the depths, and escape before time runs out.
Tense, Scary, Dark
DEEP SEAL is a 1–4 player co-op underwater horror game. Dive into dark, labyrinthine caves to recover bodies, find your way through the depths, and avoid the shark that's always hunting you. Grab what you can, find your teammates, and swim back alive.
Tense, Scary, Dark
A 1-6 player online co-op submarine sim where no one quite knows what they are doing. You and your co-op friends run sonar, steering, repairs and torpedoes through combat, stealth and treasure hunts, while fires, leaks and hunger keep you shouting at each other.
Tense, Atmospheric
Subterranauts is a 1-6 player multiplayer horror game with proximity voice chat and terrifying creatures. Your job is to complete assignments by gathering scrap for the Association of Scrap Allocation. Work together with your team to complete assignments, earn company Bucks, and survive!
Tense, Scary, Replayable

Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.

Grab up to seven co-op friends, pilot a blind submarine by sonar to an abandoned lab, then swim in to haul out corpses for the shredder.

What'Sub is a 1–4+ player Co-op Extraction "Looter". Band together as a crew of rugged submarine pirates, on a deep-sea quest for power and glory!

ABYSS is a challenging multiplayer co-op horror game where you and your crewmates must operate an old submarine through narrow trenches, scavenging…

Subterranauts is a 1-6 player multiplayer horror game with proximity voice chat and terrifying creatures.

A co-op submarine piloting horror game with asymmetrical elements where your survival is dependent on the effectiveness of communication between…

Every expedition is a gamble. Explore procedurally generated underground facilities, recover valuable loot, survive unique monsters, and escape…

FULL METAL COFFIN is a 3D co-op submarine simulator. Crew your vessel with up to 4 players.

Navigate through the dark, deep seas with your best friend to infiltrate the Evil Doctor's Secret Underwater Base © in this two-person local couch…

Wreck Below is an underwater horror game where you dismantle wrecks and avoid the unseen threat of The Arbiter.

Grab a friend for a deep sea dive. Repair your submarine and try to get as far as possible with this old and rusty, but charming submarine!

Somnium Tenebris is a 5-player, investigative horror game set in a Lovecraftian world.

FULL METAL COFFIN is a 3D co-op submarine simulator. Crew your vessel with up to 4 players.

A 1-6 player online co-op submarine sim where no one quite knows what they are doing.

CRYO sends 1-4 technicians into abandoned Antarctic facilities to restore systems, recover research, and get out alive.

Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.

Trapped in a sinking submarine, two players must communicate through walkie-talkies to solve puzzles, complete tasks, navigate the depths, and…

Darkwater puts you and up to three co-op friends in a custom submarine trapped under the ice of an alien moon.

Step into the frozen unknown in Forsaken Frontiers, a cooperative analog horror adventure set in the unforgiving embrace of an everlasting winter.

Grab up to three co-op friends and take mercenary contracts aboard a derelict spaceship where something is already hunting you.

Emissary Zero sends you and up to three co-op friends into a shifting building at night to find the Moon and get out alive.

Grab up to seven co-op friends, pilot a blind submarine by sonar to an abandoned lab, then swim in to haul out corpses for the shredder.

Your perfect heist goes wrong in the best way: the lights cut out and something else lives in the building.

Grab up to three co-op friends and fight through a sunken brinepunk kingdom in this fast-paced roguelite FPS.

Enter unstable rifts, survive otherworldly creatures, and grab bizarre ingredients to fuel a secret brewery hidden beneath a British pub.

What'Sub is a 1–4+ player Co-op Extraction "Looter". Band together as a crew of rugged submarine pirates, on a deep-sea quest for power and glory!

A co-op bodycam extraction horror game for 1-4 players. Descent into procedurally generated mazes as an underpaid asset recovery crew.

ABYSS is a challenging multiplayer co-op horror game where you and your crewmates must operate an old submarine through narrow trenches, scavenging…

Every expedition is a gamble. Explore procedurally generated underground facilities, recover valuable loot, survive unique monsters, and escape…

A 1-6 player online co-op submarine sim where no one quite knows what they are doing.

Dig up cursed loot with friends, sell it for better gear, and try to stay sane while the village plays tricks on your eyes.

Dive into an unforgiving underwater nightmare alone or with friends! Complete deadly missions for the Union in the terrifying depths of Gornak.

A co-op horror game where you are part of a crew sheltering in a collapsed tunnel, scavenging loot across maps filled with deadly creatures born…

Grab a shovel and up to five co-op friends, fly a cursed ship to haunted graveyards, and dig up loot while monsters listen for every swing and…

FULL METAL COFFIN is a 3D co-op submarine simulator. Crew your vessel with up to 4 players.

Trapped in endless yellow corridors with co-op friends, you share supplies, solve puzzles, and try to stay quiet because the entities listen.