
Subterror
Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.
If the tense and scary rhythm of Murky Divers stuck with you, this helps. You will find a few strong contenders among these games. Most of them work well for a shared session.
Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.
Also in Co-op · Tense, Scary, Replayable
Darkwater is a co-op extraction horror game for 1 to 4 players. Command a custom submarine trapped beneath the ice of an alien moon, fight enemy vessels and deep-sea things with too many teeth, and scavenge abandoned outposts for the fuel that keeps you alive.
Also in Co-op · Tense, Scary, Chaotic
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.
Also in Co-op · Tense, Scary, Mysterious
Crew a submarine with friends in a Verne-inspired undersea roguelike. Pilot, patch leaks, load torpedoes and reroute power while sea monsters claw at the hull. Communication or perishing, those are the options. Chaotic, hand-drawn and endlessly replayable, with 19th-century outfits and non-gender-specific mustaches included.
Also in Co-op · Tense, Scary, Chaotic
Black rain is falling and the Flood is coming. Lead the last survivors, send divers into a cursed abyss, and manage oxygen, sanity and hope while an angry sea god watches. A dark underwater mix of survival, camp management and dread, where every descent is a gamble and sacrifice is part of the plan.
Tense, Scary, Replayable
A 1-6 player online co-op submarine sim where the crew is the weak point. Run sonar, pilot, load torpedoes and fight fires while your friends shout over proximity chat. Missions, treasure hunts, stealth runs and PvP, with sinking always one wrong button away.
Also in Co-op · Tense, Chaotic
Play a shark or a diver in a dark ocean where the other team is hunting you. Seven shark species stalk divers through wrecks and murk, while divers grab treasure, buy guns and guard STEVE. Tense cat-and-mouse combat, alone against clever bots or online against people.
Tense, Scary, Fast-paced
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.
Also in Co-op · Tense, Scary, Mysterious
You are a contract worker sent to abandoned moons to grab scrap and meet the Company's quota. Land by day, strip the derelict complexes, haul it back before night turns lethal. It is tense, ridiculous, and best with a full crew of friends.
Also in Co-op · Tense, Scary, Chaotic
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.
Also in Co-op · Tense, Chaotic, Replayable
1st person, Singleplayer, Ocean exploration, Horror game
Tense, Scary, Replayable
An underwater horror shooter where an ancient Kraken turns the sea against you. Scavenge treasure, upgrade your arsenal and survive waves of possessed sharks, eels and worse in waters that look beautiful and want you dead.
Tense, Scary, Replayable

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

Run a submarine with your friends, where every valve, torpedo and fire drill can go hilariously wrong.

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!

Welcome [EMPLOYEE] to your new job protecting Deep Sea Cables from creatures of the deep.

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

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

Rip loot from a haunted island with your crew and try to keep someone alive on the way back to the ship.

Two to four friends brave a cursed underground world with a camera, turning every scare into footage worth watching.

Raid haunted houses with up to three friends, grab everything on your list, and pray the power holds.

Loot cursed graveyards from a flying pirate ship with your crew, staying silent while monsters listen for every sound you make.

Project Abyss is a deep sea adventure game where you explore as a diver, forced to survive a destiny that goes deeper than anyone imagined.

Dreadline: Net Quota is a chaotic co-op game for up to 6 players set on dangerous seas.

Send divers down into a cursed abyss and keep the last survivors breathing, sane and hopeful as the Flood rises.

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

Run a submarine with your friends, where every valve, torpedo and fire drill can go hilariously wrong.

Ride a cursed elevator down with friends, grab what you can from the ruins, and rebuild your Outpost before the Corrupted catch you.

Sneak through frozen research stations, fix what went wrong, and find a way out before the thing listening for you finds you first.

Clean haunted houses while something hunts you through the halls, alone or with up to three friends.

A co-op horror job where you sneak through shifting yellow halls, record what hunts you and trade the footage for your freedom.

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

Rip loot from a haunted island with your crew and try to keep someone alive on the way back to the ship.

Pilot a submarine through a frozen alien sea with your crew, fighting what swims out of the dark and scavenging for the fuel to keep going.

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

Take a contract on an abandoned ship, figure out which creature is stalking your crew, and survive the run.

Take the helm of a trawler, fish murky waters, craft gear and fight what the catastrophe left behind.

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!

Run a submarine with your friends, where every valve, torpedo and fire drill can go hilariously wrong.

You are a Smiling Critter, small and plush, loose in an abandoned toy factory with up to seven friends.

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

Rip loot from a haunted island with your crew and try to keep someone alive on the way back to the ship.

Ride a cursed elevator down with friends, grab what you can from the ruins, and rebuild your Outpost before the Corrupted catch you.

Loot cursed graveyards from a flying pirate ship with your crew, staying silent while monsters listen for every sound you make.

Send divers down into a cursed abyss and keep the last survivors breathing, sane and hopeful as the Flood rises.

Physics-based co-op extraction game for crews of 2-4 players.

Raid a cursed jungle with three friends, hauling out treasure while the horrors inland twist what you see and hear.

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