Top similar games like The Undersea:

Depth Diver is a co-op game where you go on an underwater trip with your friends to gather resources and repair underwater facilities in dangerous waters.

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

Damned 2 is a asymmetrical multiplayer (4vs1) horror game where a group of survivors must come together to solve puzzles and escape an immersive environment while another player takes the role of a unbeatable monster ready to slay all trespassers.

FOREWARNED is a 1-4 player co-op survival horror. Delve deep into ancient Egyptian ruins with your team of fellow archaeologists. Investigate phenomena, collect treasure, discover lore, survive danger, and banish the evil that lurks within.

A visually lifelike 1-6 player co-op survival horror made in Unreal Engine 5. Explore 7 procedurally generated levels that host liminal environments, puzzles, and entities with new levels and content added regularly. You are at the mercy of what's lurking and must do whatever it takes to escape.

Time For Revenge is a co-op survival horror game for 1-6 player. Get your revenge from the Chef. But be careful, Chef can't see well but he can sense your smell very well. You need to solve the puzzles and complete the tasks to save the children. Escape from the town before Chef gets you.

There is reportedly an evil inside that house. Something about an old funeral parlor offering a last chance to talk to their dead loved ones. Plus something about lights, laughter, a girl, missing people, etc... You know the same stuff everyone claims. Take a team, and check the place out.

A slightly different Backrooms is a Coop or Singleplayer Horror Puzzle Game. Encounter different Monsters and Levels than in the other Backrooms, but brace yourself for the same bone-chilling atmosphere like the typical ones.

Film your friends doing scary things to become SpöökTube famous! (strongly advised to not go alone)

GODUMAS is a co-op horror game for 1-4 players. Explore the strange island, solve location based puzzles, run or sneak your way through local inhabitants and find a way to escape… before you are sacrificed.

Customize your character in Gräuel with the Supporter Edition! Enjoy recolored versions of all in-game cosmetics and exclusive outfits inspired by the game’s monsters. Plus, this DLC will expand with each update, offering even more content.

Inside the Backrooms is a horror multiplayer game mixed with different mechanics that will make you spend an intense night with friends. Explore, think, interact, but be careful, it is rumored that there are several entities wishing to find you...

SCP: Containment Chaos is a co-op horror survival game for 1-4 players. Become SCP Foundation agents tasked with containing and researching anomalous entities in parallel universes. Solve a variety of unique tasks tailored to each SCP, all while striving to maintain order in the unimaginable chaos.

Silent Rain is a challenging and immersive co-op horror game, for 1 to 4 players. Explore abandoned locations, solve puzzles, and gather information while trying to survive the threats lurking in the dark. How many tries will it take you to master your fear?

In a post-apocalyptic world overrun by monsters due to an unknown virus, some people have managed to survive. During these times, an organization formed by elite members of society emerged, fighting against the monsters and aiming to restore the world to its original state.

『INVITATION To FEAR』 is a survival horror game for 1 to 4 players. After receiving one of the invitations, you will wake up in an unfamiliar place. Before long, you will realize that a terrifying creature is wandering around the building. Don't let "her" find you.

Damned is a randomized online horror game for up to 5 players (4 survivors and 1 monster). You’ll be able to play as one of four people trapped in different haunted places (hotels, hospitals, etc).

Blood Red is a co-op survival horror game that can be played with 1-4 players. Figure out the demon and banish it using your special demon hunting kit!

S.I.N. Unit puts you into the shoes of a paranormal investigator. Together with other people like you, you will enter haunted locations full of paranormal activity to investigate and catch the entity or ghost that haunts the place. A good entity will also appear to help you. 1-4 Players.

A co-op horror looting game about exploring luminal spaces, evading monsters, gathering valuable loot and selling it to meet the quota

Freakout is a 1-4 player online co-op survival horror game. Visit your school and find all your seized items and don't get caught by the possessed principal and his pet dog and stop the principal from sacrificing his goats. Stop the Ritual, Run, Scream, hide. Just don't get caught.

A 1-4 player survival horror game where you collect evidence while trying to escape a strange mist. With the mist surrounding you, and mutants hunting you, will you survive with the evidence you have, or fall victim to the mist yourself?

"Hired 2 Die: Prologue" is a horror single-player or cooperative 4-player game. Uncover the enigma of the "grand" Aethernus casino, survive by planning, using CCTVs, motion sensors, alarms, and electronic doors. Try to avoid four diferent creatures while finishing all your tasks.

Psycho Reign is a Single or 2 player co-operative online horror puzzle and stealth game where in each level you will be chased by blood thirsty psychos. Look for and solve mini puzzles in order to progress further on the map. Ultimately, find something to fight back...or get chopped up.

Escape the Backrooms is a 1-4 player co-op horror exploration game. Traverse through eerie backrooms levels while avoiding entities and other danger to try and escape. Free content updates with new levels and game modes keep the community rewarded.

UNEASE is a 1 to 4 players co-op survival horror game presenting an array of episodes with innovative mechanics and different settings.

Forsake is a 1 to 4 player co-op online survival horror game where each player is a member of an urban explorer group. Choose your equipment to explore places full of paranormal and exorcise them, if you think you can handle it!

Solomon Division is a co-op horror game where you play as an employee of agency that hunts demons invading your country. Play together with your friends as Technician or Medium and seal the demons. Walk the path from a beginner agent to the veteran whose name makes the Devil himself shiver in fear.

Co-op "Horror" game about running a delivery service with your friends! B̵̨̦͓͖̹̪̥̮͛̀̏̈́̐̔̉Ę̴̤̦̤͓̰̤́͗̚ ̵̨̺͓̱̞͔͉͙̀̂͂͋͠͠Ç̸̫͈̋͋͆̋̾̑̕͜Ä̴̛̟͑͛͋͂̌̕͜͝R̵̛͎̮̜̒̽̈́͂̓̒͘Ę̸͉̙̎̀͐͆Ḟ̶̼͖̭͇̗U̸̡̫͇̤̭̪̦̣̔Ḷ̶̛͖̙͗̋̈̇̕ ̷̡̢͕̦̜͚̌̎̃̔Ā̷̧͇͎̳͔̩̜̤̗͊̋Ţ̸̭̩͚̮͖͇̹̬̾ ̷͍̞̰͈̻̣͚̂̾ͅN̵̛̤͒̏̒͝Ḯ̵̡̘͇̖̏͘Ģ̸̛͙̥̞̽̀͒͜H̶̲̜̺̐̄͋͊̍̈́͘͜T̴̯̲̳̪͚̜̼̈͠

Ghostbane, is a Co-Op horror game for 1-4 players. Detect paranormal activity, collect evidence of ghosts, hunt ghosts by rituals, and conduct detailed investigations about ghosts in your main base.

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.

Play as plague doctors with your friends in this multiplayer co-op medieval horror! Purge the plague. Create the cure. Escape the mutated creatures. Make the queen proud.

Hired 2 Die is a cooperative horror game for 1 to 4 players. Terrifying monsters haunt your workplace. Study them using the security system, survive by remembering that every change is permanent, and capture them with precise planning. Most importantly, finish your job.

Hide and escape from demonic dolls in an abandoned hospital building. Demon dolls will seek out and chase the player. The only way to escape is to complete the ritual successfully. A small doll wanders around the hospital. Catch them and offer them to your ritual.

PUPPETEERS is a spine chilling indie horror game. Play online with your friends or solo in a singleplayer campaign, and try your best to escape the puppets.

MIRROR SPIRITS., is a co-op story-based thriller game that can be played with 2-4 people. Do your best to clean the house connecting to the parallel universe. Escape. Attack. Clean the house before you die.