Games like Protocol on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Protocol are available at the bottom of the page.
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The Desolate Hope
On a distant edge of an unknown planet, an abandoned structure sits in silence. Constructed by an unmanned research vessel sent from Earth, the Lun Infinus station was designed to run simulations for a five year period, exploring possibilities of human colonization in the case that Earth became uninhabitable.
The Fall
Take the role of ARID, the artificial intelligence within a high-tech combat suit. The Fall is a unique combination of adventure-game puzzle solving and side-scroller action, all set within a dark and atmospheric story. Get ready for a disturbing journey as you explore the world of The Fall.
Hard Reset Extended Edition
Over-the-top destruction, loads of enemies & a beautifully realized cyberpunk setting. Hard Reset is here to shake up the shooter scene. Try the demo now.
Gemini Rue
Discover a world where life is cheap, identities are bought & sold, & a quest for redemption can change the fate of a whole galaxy.
Serious Sam Classic: The Second Encounter
Serious Sam Classic: The Second Encounter is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month February 2002!
Serious Sam Classic: The First Encounter
Serious Sam is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Year 2001!
Half-Life: Blue Shift
Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.![[Chilla's Art] Night Delivery | 例外配達](https://shared.cloudflare.steamstatic.com/store_item_assets/steam/apps/1611490/header.jpg)
[Chilla's Art] Night Delivery | 例外配達
Night Delivery | 例外配達 is a psychological Japanese horror adventure game.
ANNO: Mutationem
ANNO: Mutationem is an action-adventure game with RPG elements set in a cyberpunk world, featuring a unique mix of pixelated 2D & 3D graphic style with a rich, dark and bizarre plot.
Title_Pending
Congratulations! You've been hired by an up and coming Game Development Studio to play-test their New Game (which as of now does not have a title). Not only that, you'll get to talk with the Lead Developer of the project, Matthew Stanton, who will give insight on his team's creative process.
Scavenger SV-4
Scavenger SV-4 is a highly replayable atmospheric first-person science fiction game. Part simulator, part roguelike, it has elements of action, combat, resource management, and a dash of horror. It is not quite like any game you have played before.
Wolfenstein II: The New Colossus
America, 1961. The assassination of Nazi General Deathshead was a short-lived victory. The Nazis maintain their stranglehold on the world. You are BJ Blazkowicz, aka “Terror-Billy,” member of the Resistance, scourge of the Nazi empire, and humanity’s last hope for liberty.
Ion Fury
3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, are excited to team up with Voidpoint to bring back the legendary Build Engine, famously known for classic first-person shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Ion Fury is the real deal!
PLANET ALPHA
PLANET ALPHA, a beautiful alien world filled with mystery and danger. Pursued by relentless enemies, you must harness the power of night and day as you struggle to survive.
Spooky's Jump Scare Mansion
Can you survive 1000 rooms of cute terror? Or will you break once the cuteness starts to fade off and you're running for your life from the unspeakable hideous beings that shake and writhe in bowels of this house? They wait for you, they wait and hunger for meeting you.
Magrunner: Dark Pulse
Magrunner: Dark Pulse is an action-puzzle game in which technology confronts the Cthulhu Mythos, penned by H.P. Lovecraft. Equipped with your Magtech glove, you must harness the ability to magnetically polarize and manipulate objects in the environment to survive and surpass challenging puzzles.
Sketchy's Contract
A 1-8 player co-op sci-fi looter horror game that takes place on a mysterious asteroid belt where players must complete contracts by traveling to exotic planets to kill creatures, find loot, and/or farm planetary materials that they must return to an ominous figure named Sketchy.
Titan Station
Far into the future, in the year 1999: David, a systems operator, runs from his troubles by taking a job on a space station. After arriving, his mundane work turns into a struggle for his very life as he makes a shocking discovery.
SLUDGE LIFE
SLUDGE LIFE is a first-person / open-world / vandalism-centric stroll through a polluted island full of cranky idiots and a vibe so thick you can taste it.
The Story of Henry Bishop
The story of Henry Bishop is a first-person psychological thriller, where the player will have to fight, guess riddles, immerse into a mystical plot and an incredible story.
RAGE 2
RAGE 2 brings together two studio powerhouses – Avalanche Studios, masters of open world insanity, and id Software, creators of the first-person shooter – to deliver a carnival of carnage where you can go anywhere, shoot anything, and explode everything.
Scanner Sombre
Scanner Sombre is a 3d horror cave exploration game where darkness is your greatest foe. Illuminate the unseen with your LIDAR scanner, revealing the eerie beauty and peril of the abyss. From the creators of Prison Architect, this immersive adventure uses light and shadow for a haunting experience.
System Shock: Enhanced Edition
Re-discover what made System Shock the first of it's kind, a ground breaking immersive sim that would inspire a generation of games to come....Most played games like Protocol on Steam
Take a look at the top games like Protocol that are currently attracting the largest player bases on the Steam platform, as of April 20th 2025.
1. Cyberpunk 2077
Similarity 62% Cyberpunk 2077 is an open-world, action-adventure RPG set in the dark future of Night City — a dangerous megalopolis obsessed with power, glamor, and ceaseless body modification. Cyberpunk 2077 is a cyberpunk and open world game developed and published by CD PROJEKT RED. Released on December 09th 2020 has received 833,276 reviews of which 701,353 were positive and 131,923 were negative resulting in a rating of 8.4 out of 10. The game has hit the top spot as the #1 most played game like Protocol, thanks to its 23,822 peak concurrent players over the last day.
8.4
701,353
131,923
23,822
players
2. Fallout 4
Similarity 53% Bethesda Game Studios, the award-winning creators of Fallout 3 and The Elder Scrolls V: Skyrim, welcome you to the world of Fallout 4 – their most ambitious game ever, and the next generation of open-world gaming. Fallout 4 is a open world, post-apocalyptic and singleplayer game developed by Bethesda Game Studios and published by Bethesda Softworks. Released on November 09th 2015 has received 389,914 reviews of which 323,883 were positive and 66,031 were negative resulting in a rating of 8.2 out of 10. While seeing 15,744 players online at once in the last 24 hours, this game is currently ranked #2 among games like Protocol based on player count.
8.2
323,883
66,031
15,744
players
3. No Man's Sky
Similarity 59% No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe. No Man's Sky is a open world, open world survival craft and space game developed and published by Hello Games. Released on August 12th 2016 has received 349,909 reviews of which 290,482 were positive and 59,427 were negative resulting in a rating of 8.2 out of 10. While seeing 9,712 players online at once in the last 24 hours, this game is currently ranked #3 among games like Protocol based on player count.
8.2
290,482
59,427
9,712
players
4. Fallout: New Vegas
Similarity 53% Welcome to Vegas. New Vegas. Enjoy your stay! Fallout: New Vegas is a open world, rpg and post-apocalyptic game developed by Obsidian Entertainment and published by Bethesda Softworks. Released on October 21st 2010 has received 225,642 reviews of which 216,820 were positive and 8,822 were negative resulting in an impressive rating of 9.5 out of 10. With 5,298 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Protocol.
9.5
216,820
8,822
5,298
players
5. Halo: The Master Chief Collection
Similarity 55% The Master Chief’s iconic journey includes six games, built for PC and collected in a single integrated experience. Whether you’re a long-time fan or meeting Spartan 117 for the first time, The Master Chief Collection is the definitive Halo gaming experience. Halo: The Master Chief Collection is a great soundtrack, fps and classic game developed by 343 Industries, Splash Damage, Ruffian Games, Bungie and Saber Interactive and published by Xbox Game Studios. Released on December 03rd 2019 has received 239,857 reviews of which 221,654 were positive and 18,203 were negative resulting in an impressive rating of 9.1 out of 10. With 4,964 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Protocol.
9.1
221,654
18,203
4,964
players
6. Borderlands 2
Similarity 52% The Ultimate Vault Hunter’s Upgrade lets you get the most out of the Borderlands 2 experience. Borderlands 2 is a loot, shooter and action game developed by Gearbox Software, Aspyr (Mac) and Aspyr (Linux) and published by Aspyr (Mac), Aspyr (Linux) and 2K. Released on September 20th 2012 has received 290,406 reviews of which 272,708 were positive and 17,698 were negative resulting in an impressive rating of 9.3 out of 10. With 3,380 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Protocol.
9.3
272,708
17,698
3,380
players
7. Subnautica
Similarity 62% Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive. Subnautica is a open world survival craft, survival and horror game developed and published by Unknown Worlds Entertainment. Released on January 23rd 2018 has received 310,298 reviews of which 301,088 were positive and 9,210 were negative resulting in an impressive rating of 9.6 out of 10. With 3,163 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Protocol.
9.6
301,088
9,210
3,163
players
8. Halo Infinite
Similarity 55% From one of gaming's most iconic sagas, Halo is bigger than ever. Featuring an expansive open-world campaign and a dynamic free to play multiplayer experience. Halo Infinite is a free to play, fps and multiplayer game developed by 343 Industries and published by Xbox Game Studios. Released on November 15th 2021 has received 176,290 reviews of which 123,035 were positive and 53,255 were negative resulting in a rating of 6.9 out of 10. With 2,949 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Protocol.
6.9
123,035
53,255
2,949
players
9. Half-Life 2
Similarity 55% Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat. Half-Life 2 is a fps, action and sci-fi game developed and published by Valve. Released on November 16th 2004 has received 242,104 reviews of which 236,300 were positive and 5,804 were negative resulting in an impressive rating of 9.7 out of 10. With 2,032 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Protocol.
9.7
236,300
5,804
2,032
players
10. Portal 2
Similarity 53% The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends! Portal 2 is a platformer, puzzle and first-person game developed and published by Valve. Released on April 18th 2011 has received 430,340 reviews of which 424,706 were positive and 5,634 were negative resulting in an impressive rating of 9.8 out of 10. With 1,888 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Protocol.
9.8
424,706
5,634
1,888
players
Best deals on games like Protocol on Steam
Discover fantastic savings with the best discounts on a variety of games like Protocol available on Steam right now, updated on April 20th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Protocol.
1. Prodeus
Similarity 54% Prodeus is a first-person shooter of old, re-imagined using modern rendering techniques and technology. Experience the quality you’d expect from a modern AAA game, designed with retro aesthetics and gameplay that invoke the tech-imposed limits of older hardware. Prodeus is a boomer shooter, fps and retro game developed by Bounding Box Software Inc. and published by Humble Games. Released on September 23rd 2022 has received 7,436 reviews of which 6,913 were positive and 523 were negative resulting in an impressive rating of 9 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for games like Protocol.
9
6,913
523
-95%
25.00€
1.25€
2. Outlast 2
Similarity 56% 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 54,959 reviews of which 50,192 were positive and 4,767 were negative resulting in a rating of 9.0 out of 10. Thanks to its incredible 95% discount, this game is now the #2 best deal in games like Protocol.
9.0
50,192
4,767
-95%
30.60€
1.53€
3. INDUSTRIA
Similarity 58% Embark on a gripping journey in INDUSTRIA, an atmospheric FPS set in Cold War-era East Berlin. Unravel the secrets of a mysterious parallel dimension while searching for a missing colleague. Explore a haunting reality where the truth awaits. Discover the dark past that lies beyond. INDUSTRIA is a fps, action and sci-fi game developed by Bleakmill and published by Headup. Released on September 30th 2021 has received 3,188 reviews of which 2,265 were positive and 923 were negative resulting in a rating of 6.9 out of 10. Thanks to its incredible 95% discount, this game is now the #3 best deal in games like Protocol.
6.9
2,265
923
-95%
20.00€
1.00€
4. Ad Infinitum
Similarity 57% 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 863 reviews of which 695 were positive and 168 were negative resulting in a rating of 7.7 out of 10. Currently offered at a significant 94% discount, this title has earned the #4 position in the best deals for games like Protocol.
7.7
695
168
-94%
35.50€
2.13€
5. Maid of Sker
Similarity 57% 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 2,176 reviews of which 1,719 were positive and 457 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 Protocol.
7.6
1,719
457
-94%
23.67€
1.42€
6. Shadow Warrior
Similarity 52% Shadow Warrior is a bold reimagining of the classic 3D Realms’ shooter from independent developer Flying Wild Hog (Hard Reset) starring the legendary and quick-witted warrior Lo Wang. Shadow Warrior is a action, fps and swordplay game developed by Flying Wild Hog and published by Devolver Digital. Released on September 26th 2013 has received 26,069 reviews of which 24,000 were positive and 2,069 were negative resulting in an impressive rating of 9.0 out of 10. Currently offered at a significant 93% discount, this title has earned the #6 position in the best deals for games like Protocol.
9.0
24,000
2,069
-93%
28.00€
1.96€
7. A Juggler's Tale
Similarity 53% Lead Abby the string puppet through a bruised, but beautiful fairy tale world in this cinematic adventure. Solve riddles, evade traps and shake off pursuers on the way to find freedom. Can Abby take control of her fate with all the strings attached? A Juggler's Tale is a atmospheric, fantasy and story rich game developed by kaleidoscube and published by Assemble Entertainment. Released on September 29th 2021 has received 1,767 reviews of which 1,632 were positive and 135 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 93% discount, this title has earned the #7 position in the best deals for games like Protocol.
8.8
1,632
135
-93%
14.29€
1.00€
8. Marvel's Guardians of the Galaxy
Similarity 55% Fire up a wild ride across the cosmos with a fresh take on Marvel’s Guardians of the Galaxy. In this action-adventure game, you are Star-Lord leading the unpredictable Guardians from one explosion of chaos to the next. You got this. Probably. Marvel's Guardians of the Galaxy is a singleplayer, story rich and action game developed by Eidos-Montréal and published by Eidos Interactive Corp.. Released on October 26th 2021 has received 38,562 reviews of which 36,313 were positive and 2,249 were negative resulting in an impressive rating of 9.2 out of 10. Currently offered at a significant 92% discount, this title has earned the #8 position in the best deals for games like Protocol.
9.2
36,313
2,249
-92%
62.38€
4.99€
9. Ghost of a Tale
Similarity 53% Ghost of a Tale is an action-RPG game in which you play as Tilo, a mouse and minstrel thrown into a perilous adventure. Through stealth and cunning you’ll be able to explore the secrets of Dwindling Heights Keep and navigate its dangers. Ghost of a Tale is a adventure, stealth and atmospheric game developed and published by SeithCG. Released on March 13th 2018 has received 4,860 reviews of which 4,459 were positive and 401 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 92% discount, this title has earned the #9 position in the best deals for games like Protocol.
8.9
4,459
401
-92%
18.75€
1.50€
10. Shadowrun: Hong Kong - Extended Edition
Similarity 57% Shadowrun: Hong Kong - Extended Edition is the capstone title in Harebrained Schemes' Shadowrun series - and now includes the all-new, 6+ hr Shadows of Hong Kong Bonus Campaign. Experience the most impressive Shadowrun RPG yet, hailed as one of the best cRPG / strategy games of 2015! Shadowrun: Hong Kong - Extended Edition is a rpg, cyberpunk and turn-based game developed by Harebrained Schemes and published by Paradox Interactive. Released on August 20th 2015 has received 4,624 reviews of which 4,010 were positive and 614 were negative resulting in a rating of 8.4 out of 10. Currently offered at a significant 92% discount, this title has earned the #10 position in the best deals for games like Protocol.
8.4
4,010
614
-92%
20.75€
1.66€
Free games like Protocol on Steam
Check out this fantastic list of free-to-play games like Protocol you can enjoy on Steam right now, updated on April 20th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Protocol.
1. Halo Infinite
Similarity 55% From one of gaming's most iconic sagas, Halo is bigger than ever. Featuring an expansive open-world campaign and a dynamic free to play multiplayer experience. Halo Infinite is a free to play, fps and multiplayer game developed by 343 Industries and published by Xbox Game Studios. Released on November 15th 2021 has received 176,290 reviews of which 123,035 were positive and 53,255 were negative resulting in a rating of 6.9 out of 10. With 2,949 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Protocol.
6.9
123,035
53,255
2,949
players
2. Dark Deception
Similarity 53% Death awaits you in Dark Deception, a story-driven first-person horror maze game. There's nowhere to hide & nowhere to catch your breath. Run or die - it's your choice. Trapped in a realm of nightmarish mazes with a mysterious woman, your only hope of survival is to find a way to escape. Dark Deception is a horror, free to play and multiplayer game developed and published by Glowstick Entertainment. Released on September 26th 2018 has received 20,896 reviews of which 18,594 were positive and 2,302 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 141, this game has secured the #2 spot in the ranking of free games like Protocol.
8.7
18,594
2,302
141
players
3. Spooky's Jump Scare Mansion
Similarity 57% Can you survive 1000 rooms of cute terror? Or will you break once the cuteness starts to fade off and you're running for your life from the unspeakable hideous beings that shake and writhe in bowels of this house? They wait for you, they wait and hunger for meeting you. Spooky's Jump Scare Mansion is a horror, free to play and cute game developed and published by Lag Studios. Released on July 28th 2015 has received 14,954 reviews of which 13,887 were positive and 1,067 were negative resulting in an impressive rating of 9.1 out of 10. The game currently holds the #3 spot among the most played free games like Protocol.
9.1
13,887
1,067
18
players
4. Dystopia
Similarity 52% Dystopia is a cyberpunk game with tense combat situations in a high-tech world spanned by computer networks. Playing as either Punk mercenaries, or Corporate security forces, the player will fight through the physical world to gain access, via jack-in terminals, to cyberspace. Dystopia is a free to play, multiplayer and action game developed by Puny Human and published by . Released on February 06th 2009 has received 1,088 reviews of which 925 were positive and 163 were negative resulting in a rating of 8.1 out of 10. The game currently holds the #4 spot among the most played free games like Protocol.
8.1
925
163
13
players
5. Bendy: Secrets of the Machine
Similarity 53% Some things are better left forgotten. Bendy: Secrets of the Machine is a adventure, indie and horror game developed by Gent Corporation and published by Joey Drew Studios. Released on April 14th 2024 has received 1,875 reviews of which 1,576 were positive and 299 were negative resulting in a rating of 8.1 out of 10. The game currently holds the #5 spot among the most played free games like Protocol.
8.1
1,576
299
11
players
6. Star Fetchers
Similarity 58% The introduction to a wild ride with gangsters and deep state conspiracy theories Star Fetchers is a indie, action and free to play game developed and published by Svavelstickan. Released on January 17th 2020 has received 7,117 reviews of which 6,922 were positive and 195 were negative resulting in an impressive rating of 9.4 out of 10. The game currently holds the #6 spot among the most played free games like Protocol.
9.4
6,922
195
6
players
7. Transmissions: Element 120
Similarity 55% TE120 is a short single player experience set in the Half-Life Universe featuring a gravity defying weapon that allows you to jump buildings and sustain large falls. The story takes place at a mysterious date & location. Where are you? Why have you been sent? Transmissions: Element 120 is a free to play, action and shooter game developed by Shokunin, Thomas M. Visser and Vincent Thiele and published by Self published. Released on June 16th 2016 has received 9,777 reviews of which 9,239 were positive and 538 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #7 spot among the most played free games like Protocol.
9.2
9,239
538
3
players
8. Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald: A Whirlwind Heist
Similarity 60% A 15 minute heist game by Crows Crows Crows & Directed by William Pugh (The Stanley Parable). Slip into the soft-soled shoes of the mastermind responsible for the greatest heist- oh god I can’t do this any more, i’m joining the strike. good luck writing the steam description. -tina Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald: A Whirlwind Heist is a free to play, comedy and first-person game developed and published by Crows Crows Crows. Released on December 04th 2015 has received 9,717 reviews of which 9,059 were positive and 658 were negative resulting in an impressive rating of 9.1 out of 10. The game currently holds the #8 spot among the most played free games like Protocol.
9.1
9,059
658
3
players
9. Perfect Vermin
Similarity 55% Your task is simple, exterminate all vermin. The sledge hammer you have been provided is capable of destroying almost all office appliances and furniture that may be uncooperative. Your time is running out. Perfect Vermin is a free to play, indie and horror game developed by Talia bob Mair and Angad Matharoo and published by ItsTheTalia. Released on November 06th 2020 has received 3,631 reviews of which 3,389 were positive and 242 were negative resulting in a rating of 9.0 out of 10. The game currently holds the #9 spot among the most played free games like Protocol.
9.0
3,389
242
3
players
10. Swallow the Sea
Similarity 52% You are a lowly egg cell on a journey through a swollen sea of strange and humanoid fish. Prey on smaller life and growing larger and stronger to perhaps someday be born. Swallow the Sea is a action, free to play and adventure game developed by Talia bob Mair and Nicolás Delgado and published by ItsTheTalia. Released on September 03rd 2021 has received 2,275 reviews of which 2,220 were positive and 55 were negative resulting in an impressive rating of 9.3 out of 10. The game currently holds the #10 spot among the most played free games like Protocol.
9.3
2,220
55
2
players