Games like Project Unknown on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Project Unknown are available at the bottom of the page.
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Clue/Cluedo
Step into new Crime Scenes. Use your skills of deduction to unravel the mystery and find out who did it, with what weapon, where. It’s the original crime-solving classic with new investigation formats exclusive to the video game. Solve every case and become the detective you want to be!
Tvö
Tvö is an online cooperative puzzle game where two players must use their wits and communication skills to find a way into the heart of the labyrinth. This game can be played using our in-game voice chat or a third-party option.
The Past Within
The Past Within is the new co-op experience from Rusty Lake! Play together with someone you deem trustworthy: one in The Past, the other in The Future. Observe and communicate what you see around you. Solve the puzzles and uncover Albert Vanderboom’s plan.
The Outlast Trials
Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same?
Escape the Ayuwoki
Escape The Ayuwoki is a first person horror-adventure videogame, in which you need to escape from a haunted mansion as quiet as possible, to evade the hideous creature called "The Ayuwoki". Stealth Mode will be your ally!
Maid of Sker
Maid of Sker is a first-person survival horror, set in a remote hotel with a gory and macabre history from Welsh folklore. Brave the nightmares of the Quiet Ones. Do not panic…don’t even breathe!
Distrust: Polar Survival
DISTRUST is an isometric survival adventure with procedural generation on an Arctic research station lost in the endless dark of a polar night. A story-rich fiction with multiple endings that suits both singleplayer fans and co-op enthusiasts.
Murky Divers
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.
DEATH IN UNISON
Survive the world's deadliest psychopaths. Experience a unique 2-player co-op experience that puts your teamwork and communication to the test. Complete your duties alone or with a partner in a prison like no other.
Incursion Red River
Incursion Red River is a tactical first-person extraction shooter set in war-torn modern day Vietnam. Exclusively single-player and co-op gameplay! Customize your loadout, complete contracts & extract, or die trying!
HALF DEAD 2
Go through deadly rooms of multi-storey building. Team up with other players and make your way through traps with a friendly team (CO-OP)! Or take a weapon and kill them all in the PvP game mode!
Dead Effect 2
Dead Effect 2 is the newest addition to the acclaimed Dead Effect franchise. This action sci-fi shooter is looking to push the boundaries of first-person shooters to new levels with slick graphics, rich narrative and RPG elements.
Metel - Horror Escape
Metel - Horror Escape is a first-person 3D game in the quest, horror genre. Welcome to the home of an insane maniac hungry for new blood and suffering! You are a victim in his hands. Be careful trying to find a way out. The maniac should not notice your escape attempt.
We Were Here Forever
You both awaken imprisoned inside the sinister Castle Rock - were you betrayed, or simply not that clever? Find out in the greatest co-op puzzle adventure in the We Were Here Series! Do you and your partner have what it takes to face the dark forces of this realm or will you be trapped… forever?
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.
Shadows Peak
Shadows Peak is an atmospheric, open-world horror game focused on exploration that doesn't hold your hand. You play as a writer who has decided to visit a mysterious place called Shadows Peak to gather materials for a new book about legends.
Serena
How long has it been? A man sits in a distant getaway cabin waiting for his wife Serena. Where is she? Things in the cabin evoke memories, and the husband comes to a disturbing realization... This short point-and-click adventure is the result of a massive collaborative effort between dozens of fans and designers of adventure games.Most played games like Project Unknown on Steam
Take a look at the top games like Project Unknown that are currently attracting the largest player bases on the Steam platform, as of April 30th 2025.
1. Dead by Daylight
Similarity 56% Trapped forever in a realm of eldritch evil where even death is not an escape, four determined Survivors face a bloodthirsty Killer in a vicious game of nerve and wits. Pick a side and step into a world of tension and terror with horror gaming's best asymmetrical multiplayer. Dead by Daylight is a horror, multiplayer and survival horror game developed and published by Behaviour Interactive Inc.. Released on June 14th 2016 has received 790,041 reviews of which 624,264 were positive and 165,777 were negative resulting in a rating of 7.9 out of 10. The game has hit the top spot as the #1 most played game like Project Unknown, thanks to its 28,299 peak concurrent players over the last day.
7.9
624,264
165,777
28,299
players
2. Phasmophobia
Similarity 90% 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. Phasmophobia is a horror, online co-op and multiplayer game developed and published by Kinetic Games. Released on September 18th 2020 has received 764,580 reviews of which 732,704 were positive and 31,876 were negative resulting in an impressive rating of 9.5 out of 10. While seeing 10,655 players online at once in the last 24 hours, this game is currently ranked #2 among games like Project Unknown based on player count.
9.5
732,704
31,876
10,655
players
3. The Outlast Trials
Similarity 51% Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same? The Outlast Trials is a horror, multiplayer and co-op game developed and published by Red Barrels. Released on March 05th 2024 has received 65,567 reviews of which 61,275 were positive and 4,292 were negative resulting in an impressive rating of 9.2 out of 10. While seeing 4,004 players online at once in the last 24 hours, this game is currently ranked #3 among games like Project Unknown based on player count.
9.2
61,275
4,292
4,004
players
4. Lethal Company
Similarity 55% A co-op horror about scavenging at abandoned moons to sell scrap to the Company. Lethal Company is a online co-op, horror and first-person game developed and published by Zeekerss. Released on October 23rd 2023 has received 485,075 reviews of which 471,550 were positive and 13,525 were negative resulting in an impressive rating of 9.6 out of 10. With 2,627 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Project Unknown.
9.6
471,550
13,525
2,627
players
5. SCP: Secret Laboratory
Similarity 58% Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape. SCP: Secret Laboratory is a free to play, multiplayer and horror game developed and published by Northwood Studios. Released on December 29th 2017 has received 212,134 reviews of which 194,042 were positive and 18,092 were negative resulting in an impressive rating of 9.0 out of 10. With 2,310 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Project Unknown.
9.0
194,042
18,092
2,310
players
6. Killing Floor 2
Similarity 52% In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem. Killing Floor 2 is a zombies, multiplayer and online co-op game developed and published by Tripwire Interactive. Released on November 18th 2016 has received 126,532 reviews of which 111,048 were positive and 15,484 were negative resulting in a rating of 8.7 out of 10. With 908 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Project Unknown.
8.7
111,048
15,484
908
players
7. Escape the Backrooms
Similarity 66% 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. Escape the Backrooms is a horror, multiplayer and online co-op game developed and published by Fancy Games. Released on August 11th 2022 has received 100,691 reviews of which 91,674 were positive and 9,017 were negative resulting in a rating of 9.0 out of 10. With 621 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Project Unknown.
9.0
91,674
9,017
621
players
8. Liar's Bar
Similarity 57% Dive into this multiplayer online experience set in a sketchy bar where the games are as dangerous as the patrons. Join a table of 4 and test your skills in Liar's Dice and Liar's Deck, where lying and bluffing are key to victory. Ready for a night at Liar's Bar? Liar's Bar is a multiplayer, casual and pvp game developed and published by Curve Animation. Released on October 02nd 2024 has received 47,924 reviews of which 43,872 were positive and 4,052 were negative resulting in a rating of 9.0 out of 10. With 562 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Project Unknown.
9.0
43,872
4,052
562
players
9. Content Warning
Similarity 68% Film your friends doing scary things to become SpöökTube famous! (strongly advised to not go alone) Content Warning is a online co-op, horror and multiplayer game developed by Skog, Zorro, Wilnyl, Philip and thePetHen and published by landfall. Released on April 01st 2024 has received 143,027 reviews of which 135,655 were positive and 7,372 were negative resulting in an impressive rating of 9.4 out of 10. With 554 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Project Unknown.
9.4
135,655
7,372
554
players
10. Backrooms: Escape Together
Similarity 64% A visually lifelike co-op horror for 1-6 people. Journey through 9 procedurally generated levels, using what's available to survive and progress deeper into the Backrooms. Backrooms: Escape Together is a multiplayer, horror and psychological horror game developed and published by Triiodide Studios. Released on October 18th 2022 has received 20,869 reviews of which 18,193 were positive and 2,676 were negative resulting in a rating of 8.5 out of 10. With 508 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Project Unknown.
8.5
18,193
2,676
508
players
Best deals on games like Project Unknown on Steam
Discover fantastic savings with the best discounts on a variety of games like Project Unknown available on Steam right now, updated on April 30th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Project Unknown.
1. Maid of Sker
Similarity 51% Maid of Sker is a first-person survival horror, set in a remote hotel with a gory and macabre history from Welsh folklore. Brave the nightmares of the Quiet Ones. Do not panic…don’t even breathe! Maid of Sker is a horror, adventure and action game developed and published by Wales Interactive. Released on July 28th 2020 has received 2,177 reviews of which 1,718 were positive and 459 were negative resulting in a rating of 7.6 out of 10. Featuring a massive 94% discount, this game currently holds the #1 spot in the best deals for games like Project Unknown.
7.6
1,718
459
-94%
23.67€
1.42€
2. Killing Floor 2
Similarity 52% In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem. Killing Floor 2 is a zombies, multiplayer and online co-op game developed and published by Tripwire Interactive. Released on November 18th 2016 has received 126,532 reviews of which 111,048 were positive and 15,484 were negative resulting in a rating of 8.7 out of 10. Thanks to its incredible 92% discount, this game is now the #2 best deal in games like Project Unknown.
8.7
111,048
15,484
-92%
29.13€
2.33€
3. The Blackout Club
Similarity 65% The Blackout Club is a first-person co-op horror game centered around a group of teenage friends investigating a monstrous secret beneath the skin of their small town. 1-4 players explore procedurally-generated missions against a fearsome enemy you can only see with your eyes closed. The Blackout Club is a horror, co-op and indie game developed and published by Question. Released on July 29th 2019 has received 2,830 reviews of which 2,203 were positive and 627 were negative resulting in a rating of 7.5 out of 10. Thanks to its incredible 92% discount, this game is now the #3 best deal in games like Project Unknown.
7.5
2,203
627
-92%
30.00€
2.40€
4. Distrust: Polar Survival
Similarity 51% DISTRUST is an isometric survival adventure with procedural generation on an Arctic research station lost in the endless dark of a polar night. A story-rich fiction with multiple endings that suits both singleplayer fans and co-op enthusiasts. Distrust: Polar Survival is a survival, multiplayer and isometric game developed by Cheerdealers and published by Alawar. Released on August 23rd 2017 has received 2,409 reviews of which 1,733 were positive and 676 were negative resulting in a rating of 7.0 out of 10. Currently offered at a significant 90% discount, this title has earned the #4 position in the best deals for games like Project Unknown.
7.0
1,733
676
-90%
12.79€
1.27€
5. FOREWARNED
Similarity 60% 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. FOREWARNED is a horror, online co-op and survival horror game developed and published by Dreambyte Games. Released on April 25th 2024 has received 6,384 reviews of which 5,802 were positive and 582 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 85% discount, this title has earned the #5 position in the best deals for games like Project Unknown.
8.8
5,802
582
-85%
10.67€
1.60€
6. Blair Witch
Similarity 58% Inspired by the cinematic lore of Blair Witch, experience a new story-driven psychological horror game that studies your reactions to fear and stress. Blair Witch is a adventure, horror and psychological horror game developed by Bloober Team SA and published by Bloober Team NA. Released on August 30th 2019 has received 7,161 reviews of which 5,641 were positive and 1,520 were negative resulting in a rating of 7.7 out of 10. Currently offered at a significant 80% discount, this title has earned the #6 position in the best deals for games like Project Unknown.
7.7
5,641
1,520
-80%
29.99€
5.99€
7. White Noise 2
Similarity 60% Enjoy a 4vs1 asymmetric horror experience like no other. Be a part of the investigator team, or take control of the creature and devour them! White Noise 2 is a horror, multiplayer and survival horror game developed and published by Milkstone Studios. Released on April 07th 2017 has received 2,861 reviews of which 2,277 were positive and 584 were negative resulting in a rating of 7.7 out of 10. Currently offered at a significant 75% discount, this title has earned the #7 position in the best deals for games like Project Unknown.
7.7
2,277
584
-75%
10.12€
2.53€
8. Shadows Peak
Similarity 50% Shadows Peak is an atmospheric, open-world horror game focused on exploration that doesn't hold your hand. You play as a writer who has decided to visit a mysterious place called Shadows Peak to gather materials for a new book about legends. Shadows Peak is a mystery, horror and survival horror game developed and published by Gua. Released on March 13th 2017 has received 327 reviews of which 233 were positive and 94 were negative resulting in a rating of 6.8 out of 10. Currently offered at a significant 75% discount, this title has earned the #8 position in the best deals for games like Project Unknown.
6.8
233
94
-75%
9.75€
2.43€
9. 灵魂筹码 Soul at Stake
Similarity 62% Soul at Stake is an oriental-themed 1v4 surviving horror game. There once was a luring urban myth saying that if one can win the game would gain countless money, and his/her destiny would instantly change to become the mightiest overnight. All the participants need only one stake——their souls. 灵魂筹码 Soul at Stake is a action, rpg and indie game developed and published by Chongming Studio. Released on June 25th 2018 has received 8,435 reviews of which 6,348 were positive and 2,087 were negative resulting in a rating of 7.4 out of 10. Currently offered at a significant 74% discount, this title has earned the #9 position in the best deals for games like Project Unknown.
7.4
6,348
2,087
-74%
15.12€
3.93€
10. The Dark Pictures Anthology: Little Hope
Similarity 54% Trapped and isolated in the abandoned town of Little Hope, 4 college students and their teacher must escape the nightmarish apparitions that relentlessly pursue them through an impenetrable fog. The Dark Pictures Anthology: Little Hope is a horror, multiple endings and story rich game developed by Supermassive Games and published by BANDAI NAMCO Entertainment Europe. Released on October 29th 2020 has received 8,784 reviews of which 6,442 were positive and 2,342 were negative resulting in a rating of 7.2 out of 10. Currently offered at a significant 71% discount, this title has earned the #10 position in the best deals for games like Project Unknown.
7.2
6,442
2,342
-71%
20.14€
5.84€
Free games like Project Unknown on Steam
Check out this fantastic list of free-to-play games like Project Unknown you can enjoy on Steam right now, updated on April 30th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Project Unknown.
1. SCP: Secret Laboratory
Similarity 58% Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape. SCP: Secret Laboratory is a free to play, multiplayer and horror game developed and published by Northwood Studios. Released on December 29th 2017 has received 212,134 reviews of which 194,042 were positive and 18,092 were negative resulting in an impressive rating of 9.0 out of 10. With 2,310 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Project Unknown.
9.0
194,042
18,092
2,310
players
2. Cry of Fear
Similarity 55% Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness. Cry of Fear is a horror, free to play and multiplayer game developed and published by Team Psykskallar. Released on April 25th 2013 has received 73,466 reviews of which 65,020 were positive and 8,446 were negative resulting in a rating of 8.7 out of 10. Thanks to its free to play tag and a daily player base of 275, this game has secured the #2 spot in the ranking of free games like Project Unknown.
8.7
65,020
8,446
275
players
3. Counter-Strike Nexon
Similarity 53% Counter-Strike Nexon is a Free to Play MMOFPS offering competitive PvP and PvE action including content from the original Counter-Strike and all new game modes, map creation function, weapons, and hordes of Zombies! Counter-Strike Nexon is a free to play, fps and zombies game developed by Valve and NEXON and published by NEXON. Released on October 07th 2014 has received 42,618 reviews of which 28,330 were positive and 14,288 were negative resulting in a rating of 6.6 out of 10. Thanks to its free to play tag and a daily player base of 219, this game has secured the #3 spot in the ranking of free games like Project Unknown.
6.6
28,330
14,288
219
players
4. PROJECT: PLAYTIME
Similarity 63% PROJECT: PLAYTIME is a Free-to-Play multiplayer horror game where six players attempt to create one giant toy while surviving a terrifying monster that roams the toy factory. A seventh player controls the monster and is given only one goal: Find and kill everyone. PROJECT: PLAYTIME is a multiplayer, horror and survival horror game developed and published by Mob Entertainment. Released on December 12th 2022 has received 49,775 reviews of which 39,087 were positive and 10,688 were negative resulting in a rating of 7.7 out of 10. Attracting a solid base of 178 players due to its free access, this strategy game has achieved the #4 position in the best free games like Project Unknown.
7.7
39,087
10,688
178
players
5. We Were Here
Similarity 64% Lost in a frozen wasteland and split up from your partner inside an abandoned castle, the only possession you have left is a walkie-talkie with a familiar voice on the other end. Can the two of you find your way out in time? We Were Here is a free to play, co-op and escape room game developed and published by Total Mayhem Games. Released on February 03rd 2017 has received 29,725 reviews of which 26,809 were positive and 2,916 were negative resulting in a rating of 8.8 out of 10. Attracting a solid base of 133 players due to its free access, this strategy game has achieved the #5 position in the best free games like Project Unknown.
8.8
26,809
2,916
133
players
6. Dodgy Deliveries
Similarity 60% Co-op "Horror" game about running a delivery service with your friends! B̵̨̦͓͖̹̪̥̮͛̀̏̈́̐̔̉Ę̴̤̦̤͓̰̤́͗̚ ̵̨̺͓̱̞͔͉͙̀̂͂͋͠͠Ç̸̫͈̋͋͆̋̾̑̕͜Ä̴̛̟͑͛͋͂̌̕͜͝R̵̛͎̮̜̒̽̈́͂̓̒͘Ę̸͉̙̎̀͐͆Ḟ̶̼͖̭͇̗U̸̡̫͇̤̭̪̦̣̔Ḷ̶̛͖̙͗̋̈̇̕ ̷̡̢͕̦̜͚̌̎̃̔Ā̷̧͇͎̳͔̩̜̤̗͊̋Ţ̸̭̩͚̮͖͇̹̬̾ ̷͍̞̰͈̻̣͚̂̾ͅN̵̛̤͒̏̒͝Ḯ̵̡̘͇̖̏͘Ģ̸̛͙̥̞̽̀͒͜H̶̲̜̺̐̄͋͊̍̈́͘͜T̴̯̲̳̪͚̜̼̈͠ Dodgy Deliveries is a online co-op, horror and co-op game developed by Tomas Gonzalez and German Rieck and published by Deliver Games. Released on January 31st 2025 has received 855 reviews of which 670 were positive and 185 were negative resulting in a rating of 7.5 out of 10. The game currently holds the #6 spot among the most played free games like Project Unknown.
7.5
670
185
53
players
7. Fear Surrounds
Similarity 53% Fear Surrounds is a horror-tinged take on the werewolf-style social subterfuge genre, where two evil spirits hide within a group of players and attempt to sabotage and murder them. Fear Surrounds is a multiplayer, horror and online co-op game developed by SaltyEgg Studio and published by Yooreka Studio. Released on October 19th 2021 has received 10,739 reviews of which 9,263 were positive and 1,476 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #7 spot among the most played free games like Project Unknown.
8.4
9,263
1,476
36
players
8. Zombie Panic! Source
Similarity 54% Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification. Zombie Panic! Source is a free to play, zombies and multiplayer game developed and published by Zombie Panic! Team. Released on October 03rd 2008 has received 7,717 reviews of which 6,533 were positive and 1,184 were negative resulting in a rating of 8.2 out of 10. The game currently holds the #8 spot among the most played free games like Project Unknown.
8.2
6,533
1,184
19
players
9. Unfortunate Spacemen
Similarity 53% An online multiplayer game about shapeshifting deception and betrayal! As a hapless, brave spaceman employed by The Company you'll work diligently to defend and be rescued from failing outposts, but not everyone around you is who they claim to be... Unfortunate Spacemen is a survival horror, investigation and co-op game developed by Geoff 'Zag' Keene and Deep Field Games and published by Deep Field Games and New Blood Interactive . Released on June 12th 2020 has received 7,482 reviews of which 6,457 were positive and 1,025 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #9 spot among the most played free games like Project Unknown.
8.4
6,457
1,025
11
players
10. Serena
Similarity 50% How long has it been? A man sits in a distant getaway cabin waiting for his wife Serena. Where is she? Things in the cabin evoke memories, and the husband comes to a disturbing realization... This short point-and-click adventure is the result of a massive collaborative effort between dozens of fans and designers of adventure games. Serena is a horror, free to play and indie game developed and published by Senscape. Released on January 30th 2014 has received 6,435 reviews of which 4,952 were positive and 1,483 were negative resulting in a rating of 7.5 out of 10. The game currently holds the #10 spot among the most played free games like Project Unknown.
7.5
4,952
1,483
8
players