Games like Project Unknown on Steam
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CASE: Online - Unofficial Fan Game
CASE: Online – An Unofficial Fan Game inspired by CASE 2: Animatronics Survival. Recapture the excitement of 2018’s multiplayer mode with up to 8 players, taking on roles as either animatronics or survivors!
Paranormal Cleanup
Clock in for the worst cleaning shift of your life: Unclog nasty toilets and scrub ectoplasm in this 1-4 player online co-op survival horror game. Get the job done and don't get caught by the entities hunting you!
MISERY
MISERY is a 1–5 player co-op survival game set in a nuclear disaster zone. Here, every day is a struggle: search radioactive ruins for resources, build your bunker, craft weapons, and explore a weird, procedurally-generated world with your friends. Beware of anomalies, monsters, and armed bandits.
SCP: 5K
SCP: 5K is a co-op or singleplayer tactical horror FPS project that puts players in the midst of a conspiracy where the SCP Foundation has turned on humanity. Enjoy Early Access as we continue to work towards a completed full release of the project!
It Takes Two Friend's Pass
Download Friend's Pass* and play It Takes Two with a friend for free. Just grab a friend who owns the full game, download Friend's Pass for free, and play together!
Whisper Mountain Outbreak
Escape room meets co-op survival horror. The year is 1998, and an ancient curse has been unleashed, trapping everyone on Mount Bisik. Alone or with up to 4 players, you must explore, find clues, figure out a way to escape...and survive the horror.
Killer Klowns From Outer Space: The Game
Plan your own alien invasion and harvest humans as the iconic Killer Klowns, or gather a team of survivors to fight the extraterrestrial threat, in a game based on the ‘80s cult classic movie. Welcome to a new, craazzy take on the asymmetrical multiplayer horror experience!
Unrailed 2: Back on Track
The chaotic co-op railroad construction game is back! Team up with your friends to build a railroad through procedurally generated worlds with new biomes and bosses. Permanently upgrade your character and engine, even create your own levels - just don‘t let your train derail!
Escape From School
Confused, you wake up sucked into an empty classroom. You have to try to escape from school by solving puzzles and discovering secrets.
School 666
School 666 is a 1-4 Player Co-op Survival Horror. You must escape this endless nightmare. Try to identify the correct path and survive the anomalies in this endless school. Some extremely powerful anomalies will catch you to their dimensions. Explore the reason why you are here... and don't die.
The Complex: Found Footage
Experience the liminal world of the backrooms through a VHS camera, immersing into a mysterious story and wandering the dream-like structures... Might there be something following you?
Eresys
Eresys is a co-op horror game inspired from the works of H.P. Lovecraft. Teamwork is a key as players take on the roles of four cultists and face the terrifying entities together. Dynamic AI mechanics and unique enemies, Eresys promises to deliver a thrilling and spine-chilling gaming experience.
Hide and Shriek
Scare or be scared in this FREE adrenaline-pumping multiplayer game full of hijinks and mischief! Set traps, cast spells, and scare the living hell out of your opponent to win!
Anomaly Exit
On your way home on the train, you weren't paying attention. Until you realised the train had been stopping at the same station over, and over again. Watch out for anomalies, and avoid the Anomaly Exit! Made for singleplayer and 2-6 co-operative multiplayer.
Emily Wants To Play
It’s 11pm and the last house on your route. The windows are boarded up, the yard is overgrown, but the lights are on and the front door is open… strange place to deliver a pizza. You’re getting soaked from the rain, so you hesitantly step inside the house. You shouldn’t have done that.
SONG OF HORROR COMPLETE EDITION
A 3rd person, fixed-camera survival horror adventure. Fear the Presence, a mysterious entity you cannot fight: stay alert, hide, breathe slowly... Explore cursed places where unseen spirits and lost souls linger in a true horror story for the ages.
SCP: Containment Breach 2
Survive the chaos of SCP Foundation! Step into a thrilling SCP horror experience with story-driven co-op, intense PvP Breach mode, and randomized maps. Play as Class-D, scientist, SCPs, and more, each role bringing unique challenges in an unpredictable, immersive facility.
The Watchers
The Watchers is a haunting co-op stealth game in which 2 players take control of a brother and sister trying to uncover the truth behind their mother’s disappearance. Explore the sinister compound of a local cult and work together to evade brutal enemies. But be careful. You’re being watched.
SCP: Observer
SCP: Observer is a frightening experience in which you'll play the role of a maintenance engineer trapped inside a security room. Survive by managing the emergency power supply, monitoring the facility's camera system for threats and blocking the paths of oncoming horrors.