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.
Filters & Lists
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....
Planet of the Eyes
An atmospheric narrative-platformer about a service robot stranded on a mysterious planet, Planet of the Eyes features a stunning visual mix of puzzle and platforming challenges, an original musical score, and fully voiced audio logs left by another survivor. Explore the mystery of an unknown world.
Deus Ex: Mankind Divided
Now an experienced covert operative, Adam Jensen is forced to operate in a world that has grown to despise his kind. Armed with a new arsenal of state-of-the-art weapons and augmentations, he must choose the right approach, along with who to trust, in order to unravel a vast worldwide conspiracy.
Deus Ex: Human Revolution - Director's Cut
You play Adam Jensen, an ex-SWAT specialist who's been handpicked to oversee the defensive needs of one of America's most experimental biotechnology firms. Your job is to safeguard company secrets, but when a black ops team breaks in and kills the very scientists you were hired to protect, everything you thought you knew about your job...
Little Orpheus
This definitive edition of the multiple-award-winning hit by master storytellers The Chinese Room is remastered for the big screen and includes all bonus content of the original. A HERO WILL EMERGE!
Beyond a Steel Sky
From multi-award winning Revolution comes ‘Beyond a Steel Sky’, a groundbreaking 3D adventure thriller, set in an AI-driven future. Subvert the world, hack the systems and solve dark conspiracies to uncover the devastating truth.
Space Hulk: Deathwing Enhanced Edition
Space Hulk: Deathwing - Enhanced Edition is a First-Person Shooter based on Games Workshop’s cult classic board game set in Warhammer 40,000 universe. Expanding upon the original game, and featuring a host of new content, new features and a richer multiplayer mode.
Outlast 2
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.
Doorways: Prelude
Doorways is an immersive horror adventure, featuring a complex story and deep atmosphere.
Far Cry 3 - Blood Dragon
Far Cry® 3: Blood Dragon is THE Kick-Ass Cyber Shooter.Welcome to an 80’s vision of the future. The year is 2007 and you are Sargent Rex Colt, a Mark IV Cyber Commando. Your mission: get the girl, kill the baddies, and save the world.
Call of Juarez: Gunslinger
From the dust of a gold mine to the dirt of a saloon, Call of Juarez® Gunslinger is a real homage to the Wild West tales. Live the epic and violent journey of a ruthless bounty hunter on the trail of the West’s most notorious outlaws.
Amnesia: The Dark Descent
Amnesia: The Dark Descent, a first person survival horror. A game about immersion, discovery and living through a nightmare. An experience that will chill you to the core.
Quake 4
As part of the elite Rhino Squad, you must spearhead Earth’s military invasion of a hostile alien homeworld. But, in this desperate war for humanity’s survival against an unrelenting enemy, you may discover that the only way to defeat them...is to become one of them.
Quadrober Simulator
Are you a quadrober?
Skoof Simulator
Are you Skoof?
Perfect Vermin
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.
Halo Infinite
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: The Master Chief Collection
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.
Xenon Racer
It’s the year 2030, the era of flying vehicles. A one-off championship for wheel based vehicles has been organised, with cutting-edge electric cars boosted by Xenon gas. Drift through cities like Tokyo and Dubai as fast as you can and claim eternal glory!
Visage
Visage is a first-person psychological horror game. Explore a mysterious ever-changing house in a slow-paced, atmospheric world that combines both uncannily comforting and horrifyingly realistic environments, and enjoy a genuinely terrifying experience.
Downward: Enhanced Edition
Downward is a first-person open-world parkour based platform adventure set in the medieval ruins of a post-apocalyptic planet Earth. Make your way through breath-taking landscapes, face ancient guardians and unravel the deep mystery that lies behind the disappearance of humanity.
Die Young
Kidnapped for no clear reason to a dazzling yet mysterious island on the Mediterranean Sea, a young girl has to find a way to escape. Armed with only her wits, agility, and the will to stay alive, she must make her getaway or Die Young.
Magnetic: Cage Closed
Magnetic: Cage Closed is a first person puzzle game where the player manipulates magnetic forces to accomplish their goals. The mechanics are focused around a single tool: The Magnet Gun which allows you to create electromagnetic fields with either positive or negative charges.
Don't Knock Twice
Don't Knock Twice is a first-person horror game based on a psychologically terrifying urban legend. One knock to wake her from her bed, twice to raise her from the dead. Supports VR on HTC Vive and Oculus Rift for the ultimate horror experience!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 30th 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 834,940 reviews of which 703,079 were positive and 131,861 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 16,687 peak concurrent players over the last day.
8.4
703,079
131,861
16,687
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 390,364 reviews of which 324,290 were positive and 66,074 were negative resulting in a rating of 8.2 out of 10. While seeing 11,693 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
324,290
66,074
11,693
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 350,242 reviews of which 290,801 were positive and 59,441 were negative resulting in a rating of 8.2 out of 10. While seeing 5,653 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
290,801
59,441
5,653
players
4. 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 240,453 reviews of which 222,169 were positive and 18,284 were negative resulting in an impressive rating of 9.1 out of 10. With 4,638 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Protocol.
9.1
222,169
18,284
4,638
players
5. 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 226,078 reviews of which 217,239 were positive and 8,839 were negative resulting in an impressive rating of 9.5 out of 10. With 4,253 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Protocol.
9.5
217,239
8,839
4,253
players
6. 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 310,872 reviews of which 301,651 were positive and 9,221 were negative resulting in an impressive rating of 9.6 out of 10. With 2,589 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Protocol.
9.6
301,651
9,221
2,589
players
7. 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 176,400 reviews of which 123,072 were positive and 53,328 were negative resulting in a rating of 6.9 out of 10. With 2,398 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Protocol.
6.9
123,072
53,328
2,398
players
8. 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 291,128 reviews of which 272,876 were positive and 18,252 were negative resulting in an impressive rating of 9.3 out of 10. With 2,341 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Protocol.
9.3
272,876
18,252
2,341
players
9. DOOM Eternal
Similarity 53% Hell’s armies have invaded Earth. Become the Slayer in an epic single-player campaign to conquer demons across dimensions and stop the final destruction of humanity. The only thing they fear... is you. DOOM Eternal is a fps, action and gore game developed by id Software and published by Bethesda Softworks. Released on March 19th 2020 has received 203,103 reviews of which 185,114 were positive and 17,989 were negative resulting in an impressive rating of 9.0 out of 10. With 1,470 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Protocol.
9.0
185,114
17,989
1,470
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 430,909 reviews of which 425,266 were positive and 5,643 were negative resulting in an impressive rating of 9.8 out of 10. With 1,250 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Protocol.
9.8
425,266
5,643
1,250
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 30th 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 7,473 reviews of which 6,947 were positive and 526 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
6,947
526
-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 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 #2 best deal in games like Protocol.
9.0
50,337
4,779
-94%
30.67€
1.84€
3. 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 2,177 reviews of which 1,718 were positive and 459 were negative resulting in a rating of 7.6 out of 10. Thanks to its incredible 94% discount, this game is now the #3 best deal in games like Protocol.
7.6
1,718
459
-94%
23.67€
1.42€
4. 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 1,778 reviews of which 1,643 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 #4 position in the best deals for games like Protocol.
8.8
1,643
135
-93%
14.29€
1.00€
5. 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 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 #5 position in the best deals for games like Protocol.
7.7
702
168
-93%
32.71€
2.29€
6. 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 3,200 reviews of which 2,273 were positive and 927 were negative resulting in a rating of 6.9 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.
6.9
2,273
927
-93%
20.29€
1.42€
7. 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 38,718 reviews of which 36,453 were positive and 2,265 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 #7 position in the best deals for games like Protocol.
9.2
36,453
2,265
-92%
62.38€
4.99€
8. 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 4,873 reviews of which 4,471 were positive and 402 were negative resulting in a rating of 8.9 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.
8.9
4,471
402
-92%
18.75€
1.50€
9. Seven: Enhanced Edition
Similarity 53% Seven: Enhanced Edition is an open-world, isometric stealth and action role-playing game, in which you play as Teriel, a master thief sent on a mission that will shake the foundations of the Vetrall Empire. Includes the Drowned Past expansion. Seven: Enhanced Edition is a action rpg, stealth and isometric game developed by IMGN.PRO and Fool's Theory and published by IMGN.PRO. Released on December 01st 2017 has received 1,996 reviews of which 1,524 were positive and 472 were negative resulting in a rating of 7.4 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.
7.4
1,524
472
-92%
30.75€
2.46€
10. Necromunda: Hired Gun
Similarity 54% Become a Hired Gun. The money’s good, the dog’s loyal, and the gun’s reliable. Embark on a fast-paced, violent, and thrilling FPS set in the darkest reaches of Warhammer 40,000’s most infamous hive city. Necromunda: Hired Gun is a action, warhammer 40k and adventure game developed by Streum On Studio and published by Focus Entertainment. Released on May 31st 2021 has received 7,369 reviews of which 4,844 were positive and 2,525 were negative resulting in a rating of 6.5 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.
6.5
4,844
2,525
-92%
39.50€
3.16€
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 30th 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 176,400 reviews of which 123,072 were positive and 53,328 were negative resulting in a rating of 6.9 out of 10. With 2,398 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Protocol.
6.9
123,072
53,328
2,398
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 20,999 reviews of which 18,680 were positive and 2,319 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #2 spot among the most played free games like Protocol.
8.7
18,680
2,319
58
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 14,970 reviews of which 13,899 were positive and 1,071 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
13,899
1,071
12
players
4. 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 1,887 reviews of which 1,587 were positive and 300 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
1,587
300
7
players
5. the static speaks my name
Similarity 52% A dark/sad/weird/funny first person exploration game. You play a man on his last night alive as he obsesses over a mysterious painting. More of a story game in that it emphasizes mood and character over gameplay. Takes ten minutes to play and has "next-gen" features like a shrimp tank. the static speaks my name is a free to play, psychological horror and indie game developed and published by the whale husband. Released on August 10th 2015 has received 5,618 reviews of which 4,584 were positive and 1,034 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #5 spot among the most played free games like Protocol.
7.9
4,584
1,034
7
players
6. 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 9,786 reviews of which 9,248 were positive and 538 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #6 spot among the most played free games like Protocol.
9.2
9,248
538
4
players
7. 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 7,122 reviews of which 6,928 were positive and 194 were negative resulting in an impressive rating of 9.4 out of 10. The game currently holds the #7 spot among the most played free games like Protocol.
9.4
6,928
194
3
players
8. The Desolate Hope
Similarity 57% 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 Desolate Hope is a rpg, adventure and free to play game developed and published by Scott Cawthon. Released on May 05th 2014 has received 1,620 reviews of which 1,489 were positive and 131 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #8 spot among the most played free games like Protocol.
8.7
1,489
131
3
players
9. Beneath a Steel Sky (1994)
Similarity 53% After being abducted by brutal soldiers and his kinfolk butchered, Robert Foster finds himself in Union City - a vast metropolis under the tyranny of a fascist AI. Alone, save for the circuit board of his best friend, Foster must discover the sinister truth - and why they specifically came for him. Beneath a Steel Sky (1994) is a adventure, free to play and point & click game developed and published by Revolution Software Ltd. Released on July 27th 2020 has received 488 reviews of which 439 were positive and 49 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 Protocol.
8.4
439
49
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 2,278 reviews of which 2,223 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
2,223
55
1
players