Top similar games like Oneirostasis:

You are trapped in a looping hospital corridor. The rules are simple: Turn back if you see an anomaly. Close your eyes if you hear a sound. Do not move if you see an entity. Find the exit.

Grave Whisperers is a co-op horror game set in a cursed pet cemetery. Stay silent or the creatures will hear you. Scream once and you’re dead. Gather clues, solve twisted cases with friends, and survive the nightmare that listens to every sound.

Anomaly Express is a 1–4 player co-op psychological horror aboard a winter train. Spot anomalies, survive deadly encounters, and uncover the supernatural force behind this endless journey.

You are trapped in a strange resort, and every night you need to turn on the lights and check the entire room to ensure there is no danger before going to sleep. Once something goes wrong, the long night will loop endlessly.

Fall into the Mirror Backrooms, alone or with up to 3 friends. Two corridors look identical, but something is always wrong. More than 100 Crawlers and ever-changing room laws make your eyes, your memory—even “identical” itself—impossible to trust. The exit is ahead. Where does it lead?

Curse of the Crimson Stag is a story-driven mystery thriller in which you explore a blurred line between supernatural occurrences and past tragedy. Uncover what led to the abandoning of the once luxurious Whiteroot Hotel. Local myth tells of a wrathful spirit known as the Crimson Stag…

You've been hired by an outfit known as SMS Group to retrieve an artifact lost somewhere inside the abandoned Folcroft Monastery. Locals say the place is haunted by restless spirits, but the pay was too good to pass up. You asked little questions. Find the artifact requested and get out alive.

Wake up in a closed mall and you are alone.. or maybe not? With no way out but going down, you must descend using elevator through each floor.

University 33 is a 1-4 player co-op anomaly detection simulator. Observe your surroundings with unwavering focus: follow the protocol, identify the irregularities, and choose the correct path to reach Floor 33. One lapse in judgment restarts the cycle.

Escape: School is a 1~6 co-op multiplayer horror game set inside a school where an incident is happening. Cooperate with your friends, find the name of the student who has died and grieve to escape from this school!

Sinever: The First Seal is a dark psychological horror game set around a decaying Victorian estate hiding a disturbing supernatural secret. Explore the house, solve environmental puzzles, manage resources, and survive the entities that become more dangerous as the night progresses.

You have become a prisoner of the endless mine, but after eleven accident-free days you can step out into the moonlight!

In Floor 9, you find yourself trapped in a mysterious hotel known as "Hotel Liminal." To escape, you must identify anomalies on each floor. These anomalies can be anywhere - on the ground, in paintings, or even right in front of your eyes.

You are trapped in a never-ending street loop. Observe your surroundings carefully and identify anomalies. Make the right choice at the end of each street and try to escape the loop.

You've been trapped in a looping Finnish summer cottage. Use your observation and memory to find anomalies and make the right choice to escape the Finnish Cottage 8.

Someone slipped a mysterious videotape under your door... Do you dare watch it?!

Locked in the main room of a mansion, avoid becoming insane by removing randomly appearing anomalies. You start at 12:00 AM and can leave at 06:00 AM.

You are trapped inside an endless house shaped by memory and guilt. Use mysterious masks to reveal hidden layers of reality, identify anomalies and escape a psychological time loop.

The corridor looks the same every time. But does it really? Maybe something has changed. Observe your surroundings carefully.

Investigate an infamous cold case in the eerie, abandoned town of Painscreek. Search for evidence, connect the dots and uncover who killed Vivian Roberts. Can you expose the truth behind this town’s dark secrets?

Trapped in an endless looping school, can you find your way out by photographing all of the anomalies?

Angstraum is an oppressive horror game that traps you in a threatening, never-ending loop. Observe your surroundings, uncover deviant anomalies, and escape deadly threats to find the exit.

You woke up in some basement and don't remember who you are or how you ended up here... But what you do know is that you need to get out of here...

A 60-minute first-person psychological horror game. Your new neighborhood hides a dark secret: previous residents either fled within weeks, or never left at all. Explore eight abandoned homes and discover their fate.

Liminal City is a psychological horror and exploration game based on found footage, set in Backrooms Level 11. Walk through the streets of Level 11, filled with soulless buildings, dynamically moving to different levels and searching for a way out. Once you fall in here will you be able to get out?

Nomad Nightmare is a psychological horror where the line between dream and reality blurs. When his car stalls on a remote road at night, a vlogger finds refuge in a motel. But this place is a trap. Explore, solve puzzles, and try to escape the nightmare.

You have arrived in a forest where people are rumored to disappear and strange things happen... Locals often see bright flashes and hear strange sounds...

Join your friends or go it alone in this cooperative horror game. Collect pieces of evidence to uncover a mysterious disappearance, all while an unknown entity lurks in the shadows. Venture through a variety of environments, gathering what you can to progress and complete your objective...

Survive for 7 days. As the days progress, the zombies grow stronger, the map becomes more dangerous, and resources are scarce. On the final day, there's one last hope for escape.

Drawn back to his haunted home, Dave must solve eerie puzzles, uncover forgotten lore, and survive the shadows that stalk every corner of its decaying halls - a past that refuses to let go.

"Just Anomaly: Hospital" is a psychological horror/anomaly game where your goal is to reach the 15th floor. With its realistic graphics, it puts you through a test of attention in a terrifying hospital setting. Will you be able to finish this game?

Nine floors down to the exit of Hotel Liminal. Some are exactly as they should be. Some hide an anomaly. Everything depends on spotting the difference, and one mistake sends you back to the top.

Drawn back to his home, Dave searches for closure in the decaying remnants of his past. But the house is not as he remembers—shadows linger where they shouldn't, whispers echo through the halls, and buried memories refuse to stay forgotten. Explore the abandoned home and a past that won’t let go.

An alien hides among the pigs. Can you spot the imposter before it's too late? A tense observation horror game inspired by The Thing, where every oink could be your last.

A tense, atmospheric descent into psychological horror—trapped in a place where reality fades and fear takes hold.

Hospital 666 is a 1-4 player horror escape game. Traverse through eerie hospital levels while observing the occurrence of anomalies and choosing the correct elevator. Some abnormal bosses will chase you to death, and you must find the right way to escape them.