Games like ZERO PROTOCOL on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like ZERO PROTOCOL are available at the bottom of the page.
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Fallout 3
Vault-Tec engineers have worked around the clock on an interactive reproduction of Wasteland life for you to enjoy from the comfort of your own vault. Included is an expansive world, unique combat, shockingly realistic visuals, tons of player choice, and an incredible cast of dynamic characters.
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.
Skinwalker Hunt
Skinwalker Hunt is a horror themed hunting game from the creator of Witch Hunt. Main focus of the game is on exploration, non-linear gameplay, and atmosphere.
We Were Here Together
As we explore these frozen wastes, misfortune strikes once again. Through the fierce blizzard, a flare lights the sky, followed by a cry for help over the radio - broken, dying... No one else can come to their rescue. Can we make it back - together?
The Blackout Club
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.
Zero Escape: The Nonary Games
Kidnapped and taken to an unfamiliar location, nine people find themselves forced to participate in a diabolical Nonary Game by an enigmatic mastermind called Zero. Why were they there? Why were they chosen to put their lives on the line? And more importantly, who can be trusted?
Zero Escape: Zero Time Dilemma
Nine participants awaken, trapped in an underground facility. To escape, they must play a game with deadly consequences. Who will live, and who will die? The choice is yours. Let the Decision Game begin…
The Bad Kids
As an adaptation of the popular suspecse TV series, Cat's Cradle, this game combines investigation, solving puzzles and reasoning with original stories, which can build a more Immersive experience. Game will build new stories based on original setting and focus on the inner world of the character.
FOREWARNED
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.
The Dark Pictures Anthology: House of Ashes
At the close of the Iraq War, Special Forces hunting for weapons of mass destruction unearth something far deadlier – a buried Sumerian temple containing a nest of unearthly creatures. To survive the night below, they must forge a brotherhood with their enemies from the world above.
The Entropy Centre
Think in reverse. Outsmart the impossible. A mind-bending first-person adventure where you solve ingenious and complex puzzles by rewinding objects through time.
Most played games like ZERO PROTOCOL on Steam
Take a look at the top games like ZERO PROTOCOL that are currently attracting the largest player bases on the Steam platform, as of April 30th 2025.
1. Lethal Company
Similarity 53% 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. The game has hit the top spot as the #1 most played game like ZERO PROTOCOL, thanks to its 2,627 peak concurrent players over the last day.
9.6
471,550
13,525
2,627
players
2. S.T.A.L.K.E.R. 2: Heart of Chornobyl
Similarity 57% Discover the vast Chornobyl Exclusion Zone full of dangerous enemies, deadly anomalies and powerful artifacts. Unveil your own epic story as you make your way to the Heart of Chornobyl. Make your choices wisely, as they will determine your fate in the end. S.T.A.L.K.E.R. 2: Heart of Chornobyl is a open world, fps and post-apocalyptic game developed by GSC Game World and published by GSC Game World (worldwide), SEGA (Japan) and 4divinity (China and South East Asia). Released on November 20th 2024 has received 111,487 reviews of which 90,084 were positive and 21,403 were negative resulting in a rating of 8.0 out of 10. While seeing 2,327 players online at once in the last 24 hours, this game is currently ranked #2 among games like ZERO PROTOCOL based on player count.
8.0
90,084
21,403
2,327
players
3. SCP: Secret Laboratory
Similarity 54% 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. While seeing 2,310 players online at once in the last 24 hours, this game is currently ranked #3 among games like ZERO PROTOCOL based on player count.
9.0
194,042
18,092
2,310
players
4. Resident Evil Village
Similarity 53% Experience survival horror like never before in the 8th major installment in the Resident Evil franchise - Resident Evil Village. With detailed graphics, intense first-person action and masterful storytelling, the terror has never felt more realistic. Resident Evil Village is a survival horror, horror and first-person game developed and published by CAPCOM Co. and Ltd.. Released on May 06th 2021 has received 117,965 reviews of which 112,813 were positive and 5,152 were negative resulting in an impressive rating of 9.4 out of 10. With 1,096 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like ZERO PROTOCOL.
9.4
112,813
5,152
1,096
players
5. DREDGE
Similarity 56% DREDGE is a single-player fishing adventure with a sinister undercurrent. Sell your catch, upgrade your boat, and dredge the depths for long-buried secrets. Explore a mysterious archipelago and discover why some things are best left forgotten. DREDGE is a exploration, fishing and lovecraftian game developed by Black Salt Games and published by Team17. Released on March 30th 2023 has received 42,787 reviews of which 40,999 were positive and 1,788 were negative resulting in an impressive rating of 9.4 out of 10. With 1,016 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like ZERO PROTOCOL.
9.4
40,999
1,788
1,016
players
6. Resident Evil 7 Biohazard
Similarity 71% Fear and isolation seep through the walls of an abandoned southern farmhouse. "7" marks a new beginning for survival horror with the “Isolated View” of the visceral new first-person perspective. Resident Evil 7 Biohazard is a horror, survival horror and first-person game developed and published by CAPCOM Co. and Ltd.. Released on January 23rd 2017 has received 96,525 reviews of which 91,934 were positive and 4,591 were negative resulting in an impressive rating of 9.4 out of 10. With 927 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like ZERO PROTOCOL.
9.4
91,934
4,591
927
players
7. Outer Wilds
Similarity 60% Named Game of the Year 2019 by Giant Bomb, Polygon, Eurogamer, and The Guardian, Outer Wilds is a critically-acclaimed and award-winning open world mystery about a solar system trapped in an endless time loop. Outer Wilds is a exploration, space and mystery game developed by Mobius Digital and published by Annapurna Interactive. Released on June 18th 2020 has received 82,852 reviews of which 79,273 were positive and 3,579 were negative resulting in an impressive rating of 9.4 out of 10. With 793 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like ZERO PROTOCOL.
9.4
79,273
3,579
793
players
8. Subnautica: Below Zero
Similarity 52% Dive into a freezing underwater adventure on an alien planet. Below Zero is set two years after the original Subnautica. Return to Planet 4546B to uncover the truth behind a deadly cover-up. Survive by building habitats, crafting tools, & diving deeper into the world of Subnautica. Subnautica: Below Zero is a open world survival craft, survival and underwater game developed and published by Unknown Worlds Entertainment. Released on May 13th 2021 has received 96,089 reviews of which 87,120 were positive and 8,969 were negative resulting in a rating of 8.9 out of 10. With 694 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like ZERO PROTOCOL.
8.9
87,120
8,969
694
players
9. Metro Exodus
Similarity 65% Flee the shattered ruins of the Moscow Metro and embark on an epic, continent-spanning journey across the post-apocalyptic Russian wilderness. Explore vast, non-linear levels, lose yourself in an immersive, sandbox survival experience, and follow a thrilling story-line that spans an entire year in the greatest Metro adventure yet. Metro Exodus is a post-apocalyptic, fps and singleplayer game developed by 4A Games and published by Deep Silver. Released on February 14th 2020 has received 120,329 reviews of which 108,013 were positive and 12,316 were negative resulting in a rating of 8.9 out of 10. With 635 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like ZERO PROTOCOL.
8.9
108,013
12,316
635
players
10. Prey
Similarity 66% In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted. Prey is a sci-fi, immersive sim and space game developed by Arkane Studios and published by Bethesda Softworks. Released on May 04th 2017 has received 50,525 reviews of which 45,911 were positive and 4,614 were negative resulting in a rating of 8.9 out of 10. With 563 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like ZERO PROTOCOL.
8.9
45,911
4,614
563
players
Best deals on games like ZERO PROTOCOL on Steam
Discover fantastic savings with the best discounts on a variety of games like ZERO PROTOCOL 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 ZERO PROTOCOL.
1. In Sound Mind
Similarity 60% In Sound Mind is an imaginative first-person psychological horror with frenetic puzzles, unique boss fights, and original music by The Living Tombstone. Journey within the inner workings of the one place you can’t seem to escape—your own mind. In Sound Mind is a horror, psychological horror and story rich game developed by We Create Stuff and published by Maximum Entertainment. Released on September 28th 2021 has received 5,708 reviews of which 5,436 were positive and 272 were negative resulting in an impressive rating of 9.2 out of 10. Featuring a massive 96% discount, this game currently holds the #1 spot in the best deals for games like ZERO PROTOCOL.
9.2
5,436
272
-96%
32.25€
1.29€
2. My Friendly Neighborhood
Similarity 74% Something scary is happening with everyone's favorite Saturday morning puppet show, The Friendly Neighborhood! Play as Gordon, a repairman sent to get to the bottom of this disturbing dilemma. Fend off puppets and solve puzzles in this survival horror adventure. My Friendly Neighborhood is a singleplayer, survival horror and funny game developed by John Szymanski and Evan Szymanski and published by DreadXP. Released on July 18th 2023 has received 2,725 reviews of which 2,606 were positive and 119 were negative resulting in an impressive rating of 9.1 out of 10. Thanks to its incredible 96% discount, this game is now the #2 best deal in games like ZERO PROTOCOL.
9.1
2,606
119
-96%
32.50€
1.30€
3. Outlast 2
Similarity 53% Outlast 2 introduces you to Sullivan Knoth and his followers, who left our wicked world behind to give birth to Temple Gate, a town, deep in the wilderness and hidden from civilization. Knoth and his flock are preparing for the tribulations of the end of times and you’re right in the thick of it. Outlast 2 is a horror, psychological horror and survival horror game developed and published by Red Barrels. Released on April 24th 2017 has received 55,116 reviews of which 50,337 were positive and 4,779 were negative resulting in a rating of 9.0 out of 10. Thanks to its incredible 94% discount, this game is now the #3 best deal in games like ZERO PROTOCOL.
9.0
50,337
4,779
-94%
30.67€
1.84€
4. The Entropy Centre
Similarity 50% Think in reverse. Outsmart the impossible. A mind-bending first-person adventure where you solve ingenious and complex puzzles by rewinding objects through time. The Entropy Centre is a puzzle, first-person and sci-fi game developed by Stubby Games and published by Playstack. Released on November 03rd 2022 has received 3,538 reviews of which 3,186 were positive and 352 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 94% discount, this title has earned the #4 position in the best deals for games like ZERO PROTOCOL.
8.7
3,186
352
-94%
18.50€
1.11€
5. Maid of Sker
Similarity 56% 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. Currently offered at a significant 94% discount, this title has earned the #5 position in the best deals for games like ZERO PROTOCOL.
7.6
1,718
459
-94%
23.67€
1.42€
6. Ad Infinitum
Similarity 62% When reality is a nightmare, nightmares become real. In this psychological horror game, you fight the terrifying creatures invading your mind. Can you save your sanity? Ad Infinitum is a horror, action and psychological horror game developed by Hekate and published by Nacon. Released on September 14th 2023 has received 870 reviews of which 702 were positive and 168 were negative resulting in a rating of 7.7 out of 10. Currently offered at a significant 93% discount, this title has earned the #6 position in the best deals for games like ZERO PROTOCOL.
7.7
702
168
-93%
32.71€
2.29€
7. SCP: Secret Files
Similarity 55% SCP: Secret Files is a collection of paranormal cases from the SCP Foundation, an organization tasked with containing dangerous anomalies. You join as an assistant researcher for Dr. Raymond Hamm and complete a strenuous induction program that will make you question everything you know. SCP: Secret Files is a adventure, story rich and psychological horror game developed by GameZoo Studio and published by Pixmain. Released on September 13th 2022 has received 4,778 reviews of which 4,233 were positive and 545 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 92% discount, this title has earned the #7 position in the best deals for games like ZERO PROTOCOL.
8.6
4,233
545
-92%
12.50€
1.00€
8. The Blackout Club
Similarity 51% 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. Currently offered at a significant 92% discount, this title has earned the #8 position in the best deals for games like ZERO PROTOCOL.
7.5
2,203
627
-92%
30.00€
2.40€
9. Them and Us
Similarity 54% Them and Us is a classic, survival horror game with a focus on atmosphere and player immersion. Discover the truth of Alicia’s past as she descends further into her strange, unending nightmare. Them and Us is a female protagonist, survival horror and horror game developed by TendoGames Co. and Ltd. and published by TendoGames Co., Ltd. and 方块游戏(CubeGame). Released on September 28th 2021 has received 1,368 reviews of which 1,044 were positive and 324 were negative resulting in a rating of 7.3 out of 10. Currently offered at a significant 92% discount, this title has earned the #9 position in the best deals for games like ZERO PROTOCOL.
7.3
1,044
324
-92%
32.50€
2.60€
10. Tormented Souls
Similarity 60% Classic survival horror is back! Inspired by the original Resident Evil and Alone in the Dark series, Tormented Souls modernises with a fresh twist on the fixed perspective adventure - as Caroline Walker investigates the mysterious disappearance of twin girls in a terrifying mansion-turned-hospital. Tormented Souls is a survival horror, horror and puzzle game developed by Dual Effect and Abstract Digital and published by PQube. Released on August 26th 2021 has received 5,972 reviews of which 5,446 were positive and 526 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 91% discount, this title has earned the #10 position in the best deals for games like ZERO PROTOCOL.
8.8
5,446
526
-91%
19.56€
1.76€
Free games like ZERO PROTOCOL on Steam
Check out this fantastic list of free-to-play games like ZERO PROTOCOL 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 ZERO PROTOCOL.
1. SCP: Secret Laboratory
Similarity 54% 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 ZERO PROTOCOL.
9.0
194,042
18,092
2,310
players
2. PROJECT: PLAYTIME
Similarity 55% 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. Thanks to its free to play tag and a daily player base of 178, this game has secured the #2 spot in the ranking of free games like ZERO PROTOCOL.
7.7
39,087
10,688
178
players
3. We Were Here
Similarity 51% 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. Thanks to its free to play tag and a daily player base of 133, this game has secured the #3 spot in the ranking of free games like ZERO PROTOCOL.
8.8
26,809
2,916
133
players
4. Escape Room - Der kranke Kollege
Similarity 51% You only wanted to make a visit to your sick colleague, but what you encounter is beyond your imagination. Discover the secrets of your colleague and find a way to escape the trap. Escape Room - Der kranke Kollege is a multiplayer, free to play and horror game developed and published by Bitbeast Games. Released on September 05th 2020 has received 12,009 reviews of which 9,815 were positive and 2,194 were negative resulting in a rating of 8.0 out of 10. The game currently holds the #4 spot among the most played free games like ZERO PROTOCOL.
8.0
9,815
2,194
68
players
5. Garten of Banban 0
Similarity 57% Explore the origins of the mysterious Banban’s Kindergarten. Survive the dark past of the establishment. Try to make some friends. Uncover the truth behind the place, and who you are… Garten of Banban 0 is a horror, singleplayer and first-person game developed and published by Euphoric Brothers. Released on February 21st 2025 has received 2,548 reviews of which 1,848 were positive and 700 were negative resulting in a rating of 7.0 out of 10. The game currently holds the #5 spot among the most played free games like ZERO PROTOCOL.
7.0
1,848
700
62
players
6. Indigo Park: Chapter 1
Similarity 57% Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down. Indigo Park: Chapter 1 is a horror, free to play and first-person game developed and published by UniqueGeese. Released on May 18th 2024 has received 20,666 reviews of which 19,744 were positive and 922 were negative resulting in an impressive rating of 9.3 out of 10. The game currently holds the #6 spot among the most played free games like ZERO PROTOCOL.
9.3
19,744
922
31
players
7. Paper Lily - Chapter 1
Similarity 55% Paper Lily is an RPG horror game in which you can solve puzzles in different ways. Explore a hidden world, meet strange characters, and guide Lacie as she attempts to find answers about her unusual condition. Paper Lily - Chapter 1 is a pixel graphics, psychological horror and anime game developed and published by Leef 6010. Released on January 26th 2024 has received 6,254 reviews of which 6,198 were positive and 56 were negative resulting in an impressive rating of 9.6 out of 10. The game currently holds the #7 spot among the most played free games like ZERO PROTOCOL.
9.6
6,198
56
19
players
8. Nightmare House: The Original Mod
Similarity 60% Wake up, it’s time for the real nightmare to begin. Make your way through a terrorizing house, uncover the secrets of a haunted hospital, fight through hordes of the undead, and try to escape Nightmare House. Nightmare House: The Original Mod is a free to play, horror and action-adventure game developed and published by We Create Stuff. Released on November 14th 2024 has received 1,295 reviews of which 1,257 were positive and 38 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #8 spot among the most played free games like ZERO PROTOCOL.
9.2
1,257
38
18
players
9. SCP: Labrat
Similarity 51% You are a test subject in the underground SCP research facility. When a containment breach occurs, you must find your way out. Escape the SCPs, discover anomalous objects, and collect valuable resources along the way. SCP: Labrat is a horror, multiplayer and vr game developed and published by Bezbro Games. Released on December 24th 2022 has received 3,951 reviews of which 3,256 were positive and 695 were negative resulting in a rating of 8.0 out of 10. The game currently holds the #9 spot among the most played free games like ZERO PROTOCOL.
8.0
3,256
695
14
players
10. Serena
Similarity 52% 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 ZERO PROTOCOL.
7.5
4,952
1,483
8
players