Top similar games like Thalassomania:

OverNight is a multiplayer co-op Ghost Hunting horror with multiple Ghosts per session. Explore some of the most haunted locations with your friends, using a variety of paranormal equipment, engage in rituals, and attempt haunted communications to connect with the other side.

Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can.

Voiceless is a cooperative horror game that can be played alone or with up to 4 players. Your goal is to survive making as little noise as possible, because any sound, including your microphone, can be heard by the Maniac, who is eager to catch you and your friends.

Use the specialized equipment at your disposal to locate & log as many paranormal events as possible. Decipher the ingredients needed for your ritual and try to exorcise any demons within. Any incorrect ingredients and you may never leave! 1-4 Players

You’re a toast in this co-op horror game. Your job is to investigate haunted kitchens, use ghost-hunting equipment to track down paranormal activity, exorcise possessed appliances, and save a fellow toast from getting sliced.

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.

Step into the haunting world of Stranded Souls, A co-op horror game designed to challenge your wits and test your courage, this game lets you gather up to 4 players to face the unknown, unravel mysteries, and survive the horrors that lie ahead.

The Backrooms - Nightmare Dimension is a Co-op online horror game with up to 4 players, where you and your friends take on the roles of soldiers who are part of the SCP Foundation with the mission to eliminate the mysterious entities found in the infamous place called "the Backrooms".

A 1–4 player co-op horror game. Cleanse cursed lands, perform forbidden rituals, and survive a spreading plague. Fear is not scripted. It emerges from your choices, your mistakes, and your team.

"Lost Lullabies - The Orphanage Chronicles" is a Co-Op horror game set in 1980, inspired by the real stories of an orphanage ruined by a fire in 1960 Lowell. Playable with 1-4 players, the goal is to identify and expel malevolent spirits alone or with your team.

The Haunted Riddle is a 4 player psychological horror. Trapped in a mysterious mansion with your friends, choose from unique characters with different perks and professions. Explore hidden passages, solve puzzles, and uncover the house’s dark secrets, all while dark forces work against you.

Deadly Broadcast is a co-op horror and survival game that can be played with 1-4 players. As a Famous Streamer, you have to stay alive, but at the same time you should stream the paranormal events in the cursed places to gather more donations and more viewers. Don’t die! Don’t cut the Broadcast!

Holy Purge is a co-op horror game where players play as priests who exorcise demons in various scenarios.

Gather your courage and face the ghost danger.Clean the curses and hunt the ghost!

Trapped in darkness, hunted down—your only way out is the right keycard. In this intense co-op multiplayer horror game, you and up to 4 friends must search terrifying maps, evade deadly villains, and escape before time runs out. No weapons, just wits. Can you survive?

In this co-op horror game, escape an unknown realm where reality is shattered and dimensions collide. Solve puzzles, avoid deadly entities, and uncover the hidden saboteur.

A 4‑player co‑op horror about surviving the abandoned laboratories of Project Mirny. The echoes of forgotten experiments still patrol the perimeter. Adapt, stay tight—and march into the very heart of the nightmare. Orders are orders. Fear is certain, fun inevitable.

Breach Signal is a 1-6 player co-op cosmic horror game. As a recruit of the FNA, lead expeditions into strange places and investigate mysterious anomalies that threaten our reality.

The Demo & payable both have the same content. Blessed Curse is a 4-player, online co-op, psychological horror game. Take on a rumor you've received of a haunted location in Japan. At the scene utilize your entity-hunting equipment to gather evidence and figure out what might be residing there.

An online co-op horror game featuring unique playable characters and RPG mechanics. Exorcise ghosts using your special abilities and tools while surviving the supernatural onslaught

Investigate, explore, and solve paranormal phenomena using technology as well as your own esoteric abilities, alone or with friends.

Enigma Manor is a 1-4 player co-op survival horror game. Navigate your way through the procedurally generated manor, fend off monsters, solve puzzles and find a way to escape.

Cursed Despair offers a chilling experience where you and your friends will face a mysterious monster, plunging into deep despair. Gather the necessary items to survive, perform the ritual, and stand firm amidst the darkness.

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?

Remnant Records is a horror investigation game for 1 to 4 players. Explore places haunted by the dead, survive elaborate and unique ghosts and find out what happened to them through thousands of generated stories.

Wishes of Dawn is a horror game where you and your team of four work together to track down ghosts and other supernatural entities. Investigate these beings from different civilizations using items from their cultures and collect evidence to uncover the truth.

HUNT ME is a co-op horror survival game for 1-4 players. Gather the ingredients for the ritual, weaken the threat and banish it. Be careful, you're also the prey!

Demonsomnia is a CO-OP multiplayer bodycam horror game focused on the impact of nuclear reactions. Radiation has spread everywhere, so put on your gas mask. Your goal is to activate the nuclear reactor device and escape without being caught by mutants.

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).

Reports of paranormal activity have been creeping up across the nation. You and your team have been instructed to investigate. Explore and solve puzzles, all whilst avoiding deadly horrors from the Otherplane.

Mirage is an immersive psychological horror game inspired by the Backrooms. Trapped after a failed tech experiment, you explore a distorted world where hallways repeat, walls lie, and reality crumbles. Survive, understand... or be lost forever.

Cursed Night is a multiplayer horror game for 1-5 players. Use your magic abilities to defeat the devil, or become the devil and seek revenge. Find talismans, collect power, release spirits, or choose the dark side and kill everyone.

Save Elizy - is a cooperative survival horror game for 1-4 players. Your path is blocked by demons who will leave you without limbs. Run and hide, save Eliza, but remember - don't let yourself be taken to Hell.

The Doorway Effect is a 1-4-player co-op psychological horror roguelike. Explore the inner world of a dying man's mind, racing through door after door in a labyrinth of nightmares. Encounter traumas incarnate, and discover the secrets locked within. If you can survive long enough...

Unpossess is a 1-4 co-op exorcism simulator game set in the early 1900s. Players take on the role of exorcists responsible for addressing cases of human possession.

An online co-op horror (up to 3 players) where you investigate Breaches as reality collapses. Every action is an Infringement that raises the danger, angering the Entity. Use dynamic tool-based roles to classify, contain, and escape before your sanity breaks. Adapt together or die alone.