Top similar games like Sleep Outbreak:

NIVO is a cooperative suspense game where players investigate and eliminate anomalies across unique maps. Observe your surroundings, identify reality-distorting events, and restore order before the environment spirals out of control.

Co-op horror where the Station watches you. Complete missions, scavenge loot, and upgrade your gear across deadly runs. The Station Director learns your squad's habits, your fears, your greed, your routines, and adapts every run to break them

A co-op horror about investigating and recording aliens. Turn in your recordings to the Colony for a reward. You keep the recordings you make whether you die or survive.

A 1-4 player co-op survival horror game set in a collapsing underwater facility where a relentless creature hunts you and your crew through the dark.

Ominous is a thriller/horror game for up to 4 players. In this game, you must collaborate with your teammates to face a creature within an indoor setting. What sets Ominous apart is its unique approach to multiplayer, offering a distinct experience compared to many other horror games available.

A young reporter investigates disturbing legends born of the Italian Internet. Brain rot-do they really exist? Discover the truth, photograph the entities and collect the figurines before the moon turns red. A psychological horror between folklore and madness.

BTGZ:FC is a sci-fi horror game where you control an RC drone to explore a dangerous new dimension. Navigate a vast network of tunnels and Survive hostile entities and anomalies using specialized tools and devices built specifically for the drone, and rely on transmitter antennas to travel.

Survive alongside your companions in the outskirts of a town after a supernatural experimental accident. Gather survival resources, upgrade your vehicles and mobile fortress, and explore unknown areas to gradually uncover the truth behind the experiment…

In a future where rogue robots control orbital nuclear stations, you’re hired to reclaim energy cells. In this 1 - 4 player horror extraction game you need to complete contracts, evade deadly robots, buy tools to improve your odds, and coordinate with your team to escape alive.

Detour is an online co-op horror game featuring procedural generation, proximity chat, winding mazes and scary monsters. You and up to 3 of your friends are dropped into a maze. It is unknown how you got there, but your goal is clear: survive and escape.

Escape.exe is a gripping escape game for 1-4 players, each offering a unique atmosphere, filled with mysteries and threats. Challenges determine intelligence, and decisions determine survival. Prepare for an uninterrupted experience with each new episode.

S.I.F: The Missing Rescue is a 1-4 player co-op horror game set deep within a U.S. National Park. Someone is missing. Your team is going in. Navigate a labyrinth of trees while something watches your every move. But the missing person is still out there. Step into the danger. Because that's the job.

Enter Pantheon, a futuristic city swallowed by darkness and ruled by a rogue AI. Team up with up to 4 players and survive an adaptive pursuer that learns from every mistake. Complete the mission, uncover Minerva’s secrets, and find a way out before the city consumes you.

Explore an abandoned research facility, uncover evidence of horrific experiments, and escape alive. Complete randomized objectives with your team while evading bio-engineered threats in this atmospheric co-op horror experience.

Explore the surreal dreamworld of the in:Between, face grotesque Atrocities, and rescue lost Hollows in this bizarre blend of cozy and horror. Play solo or with friends in this co-op survival horror, where twisted terrors and unpredictable gameplay keep you on your toes.

An everyday, routine assembly takes a rather dark turn amidst some rumours of a containment breach...

2-player asymmetrical co-op game, Follow Us is a hilarious and horrifying relationship stress test, where one player explores a spooky environment, while another guides them remotely from the van, trying to keep their partner alive.

Six players. One infested ship. Ten alien monsters. Board increasingly dangerous deep space research vessels to scan alien species while repairing the ship and running from monsters. But the biggest threat might just be your friends.

BLACK SITE is a 1-4 player co-op horror game. Explore the levels with your partner to gather info about some government experiments, while trying to communicate with your partner without being too loud. Free monthly content updates with new levels.

Backrooms: Infinite Halls is a game about investigating and researching the Backrooms, going deeper and deeper down these unending spaces, roaming their halls and avoiding their horrors.

Join a co-op team of 4 friends in a first person shooter that sends Pan Galactic Postal Service letter carriers into the locked-down streets of the future! Fight mutated alien horrors as you and your fellow essential workers deliver baubles to hard-to-find destinations! Hey, at least it's a job!

The research team is gone. You're next. A first-person psychological horror in the Backrooms - explore ruined levels, keep your Synchronization steady, and uncover what destroyed your research team. Free demo: the Prologue.

Sir, You Are Being Hunted is a freedom sandbox stealth experience, where each playthrough is unique, thanks to our British Countryside Generator. Escape from these robot-infested islands with violence, trickery and stealth. This brutally funny game is available for Windows, OSX, and Linux.

Fix a failing reactor with your team… or make everything worse. Every system is connected. Every mistake has consequences. And not everyone can survive.

An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires.

A 6 player horror co-op game set in the dystopian future of Grimm City. Do shady work for Neurocorp while evading the terrifying dwellers of this strange city. Or fight them if you dare! All so you can rest and customize your home. Please, sign on the dotted line to begin.

Subnautica 2 is an underwater survival adventure set on an all-new alien world, developed by Unknown Worlds. Play alone or with friends in 4-player co-op. Adapt to survive by building custom bases and crafting tools. Explore the unknown to uncover the mysteries hidden within the depths.

7Years offers an open-world horror experience with multiple game modes, including single player, multiplayer coop and multiplayer PvP. And, with randomized spawns of unique enemies, mini-games, items, portals, puzzles, achievements, player weapons, and a feline protector, each round is different. 

Descend the dangerous depths of Mindaro, a 1-6 player co-op action-horror game. Navigate caves, biomes, and industrial ruins while scavenging for survival and uncovering hidden secrets.

Track and hunt elusive cryptids in ever-changing environments. Face the unknown solo or with friends in a high-stakes co-op adventure. Set traps, adapt your tactics, and survive intense battles against creatures that won’t go down easy. Stay sharp—the hunted can become the hunter!

Delete: E.A.D CORE is a 1-4 player co-op survival horror game. Enter an underground data facility that has been shut down for years, find classified disks, destroy them in the correct systems, and escape from the thing that is still running inside.

Half dead is a multiplayer sci-fi game about a violent TV show. The players' goal is to survive in a network of rooms full of traps.

PANICORE is a survival horror game that mixes permadeath, AI monsters and a co-op experience up to 5 players (4 players in demo). Try to escape and don't get caught, but beware: they don't only hear your steps, but also your voice.

The Remains is a 1-4 player co-op survival horror where an intelligent AI enemy hunts your team whilst adapting to your tactics. Stay quiet and out of sight, or get picked off one by one.