Games like Protocol
If Protocol is your kind of game, the closest matches are Super Bio-Man, High On Life 2 and Escape Condition — picked from the ranked list below. Reviewers single out its dark, punishing and tense. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.
Get personalized picks →About Protocol: By signing below, you agree to follow the Protocol. Protocol is a program of strict rules created to make first contact with an alien life form that got shot down in the Arctic Circle.
Players who liked Protocol also play
Steam players who put hours into Protocol also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.
Super Bio-Man
WHY THIS
Top pick for Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Protocol.
Super Bio-Man is the ultimate gunslinger and the guardian of our galaxy. Using his arsenal and metal fist, he shows the invaders from outer space - who's the boss here.
High On Life 2
WHY THIS
Shares a dark mood with Protocol.
Second-strongest match for Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Adventure with Protocol.
An intergalactic conspiracy threatens the fate of humanity! Team up with a wide cast of talking alien guns as you shoot, stab, and skate your way through the exotic locales to take down the bad guys and save your favorite species (humans)!
Escape Condition
WHY THIS
Third-strongest match for Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Protocol.
ESCAPE CONDITION is the first FPS that lets you choose how to prepare your city for the catastrophic arrival of AI Superintelligence (EVA). Will you fight EVA alone with AI-powered Cybernetics, or empower the citizens around you to help in the fight?
High On Life
WHY THIS
Ranked #4 for Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Adventure with Protocol.
HIGH ON KNIFE DLC OUT NOW!! - Humanity is being threatened by an alien cartel who wants to use them as drugs. It’s up to you to rescue and partner with charismatic, talking guns, take down Garmantuous and his gang, and save the world!
Starship Troopers: Ultimate Bug War!
WHY THIS
Shares a dark mood with Protocol.
Ranked #5 for Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Protocol.
Lock and load into the Starship Troopers universe and join the Mobile Infantry in the most realistic depiction of war ever made! Experience an original story in this action-packed, first-person retro shooter. Would you like to know more?
Bulletstorm: Full Clip Edition
WHY THIS
Ranked #6 for Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Adventure with Protocol.
Step into the boots of Grayson Hunt after a crash landing on an old resort planet forces him to make a hard choice: survival or revenge. Execute masterful kills with Bulletstorm: Full Clip Edition’s unique combat system that rewards you for performing the most creative and deadly kills imaginable.
POSTAL 4: No Regerts
WHY THIS
Ranked #7 for Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Adventure with Protocol.
POSTAL 4: No Regerts is a satirical and outrageous comedic open world first person shooter and the long-awaited true sequel to what’s been fondly dubbed as "The Worst Game Ever™", POSTAL 2!
BRAZILIAN DRUG DEALER 3: I OPENED A PORTAL TO HELL IN THE FAVELA TRYING TO REVIVE MIT AIA I NEED TO CLOSE IT
WHY THIS
Shares a dark mood with Protocol.
Ranked #8 for Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Protocol.
A BRAZILIAN BOOMER SHOOTER GAME MADE USING THE ID TECH 2 ENGINE! SHOOT, JUMP, EMBARK ON A JOURNEY THROUGHOUT THE STATE OF RIO DE JANEIRO, HELL AND EVEN HEAVEN! SAVE BRAZIL!
Cheaper alternatives
Games in the same vein priced at least 40% below Protocol at current Steam store prices.
Garry's Mod
WHY THIS
Priced ~44% under Protocol on Steam right now. Shares Indie with Protocol.
Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.
Vampire Survivors
WHY THIS
Priced ~44% under Protocol on Steam right now. Shares Action and Indie with Protocol.
Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!
Titanfall® 2
WHY THIS
Priced ~50% under Protocol on Steam right now. Shares Action with Protocol.
Respawn Entertainment gives you the most advanced titan technology in its new, single player campaign & multiplayer experience. Combine & conquer with new titans & pilots, deadlier weapons, & customization and progression systems that help you and your titan flow as one unstoppable killing force.
Cookie Clicker
WHY THIS
Priced ~44% under Protocol on Steam right now. Shares Indie with Protocol.
An idle game about making cookies! Originally released in 2013 on the web, and actively developed since then. This is the official version for Steam.
WEBFISHING
WHY THIS
Priced ~44% under Protocol on Steam right now. Shares Indie with Protocol.
WEBFISHING a multiplayer chatroom-focused fishing game! Relax and fish (on the web!)
POSTAL 2
WHY THIS
Shares a dark mood with Protocol.
Priced ~89% under Protocol on Steam right now. Shares Action and Indie with Protocol.
Live a week in the life of "The POSTAL Dude"; a hapless everyman just trying to check off some chores. Buying milk, returning an overdue library book, getting Gary Coleman's autograph, what could possibly go wrong?
Buckshot Roulette
WHY THIS
Priced ~67% under Protocol on Steam right now. Shares Action and Indie with Protocol.
Play Russian roulette with a 12-gauge shotgun. Four enter. One leaves. Roll the dice with your life. Good luck!
Brotato
WHY THIS
Priced ~44% under Protocol on Steam right now. Shares Action and Indie with Protocol.
Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.
Free alternatives
Free-to-play games that recommended players of this title also tend to enjoy.
Doki Doki Literature Club!
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Protocol.
The Literature Club is full of cute girls! Will you write the way into their heart? This game is not suitable for children or those who are easily disturbed.
Life is Strange - Episode 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Adventure with Protocol.
Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.
Ultimate Custom Night
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Protocol.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
ENA: Dream BBQ
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Adventure with Protocol.
Experience surreal environments and inexplicable characters as ENA in a new wild world.
The Murder of Sonic the Hedgehog
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Protocol.
Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!
Indigo Park: Chapter 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Protocol.
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.
Narrow it down
Head-to-head comparisons
More from Fair Games Studio
Other recommendable Steam games by Fair Games Studio, ranked by review count so the studio's hits land first.
Loco Parentis / 孤女咒怨
WHY THIS
Shares a tense mood with Protocol.
Another title from Fair Games Studio, the studio behind Protocol. Shares Action and Indie with Protocol.
Surreal survival horror, where you alone or with a friend have to solve puzzles and try to survive in the endless entrance among the monsters
Noch
WHY THIS
Another title from Fair Games Studio, the studio behind Protocol. Shares Action and Indie with Protocol.
Go alone (or with a friend) to find the girl who destroyed the world. An ominous surreal first-person adventure full of dangerous monsters and secrets of the deceased world
Aliens In The Yard
WHY THIS
Another title from Fair Games Studio, the studio behind Protocol. Shares Action and Indie with Protocol.
The aliens have decided to steal the Earth's most precious artifacts: your backyard junk. Defend your backyard with fireworks!
Startup Valley Adventure
WHY THIS
Shares mini games with Protocol.
Another title from Fair Games Studio, the studio behind Protocol. Shares Indie and Adventure with Protocol.
A tough divorce, getting fired from a job ... Why not make your life harder? Take on the role of a novice startup in Silicon Valley. Get ready to dive into…
Protocol VR
WHY THIS
Another title from Fair Games Studio, the studio behind Protocol. Shares Action and Indie with Protocol.
By signing below, you agree to follow the Protocol. Protocol is a program of strict rules created to make first contact with an alien life form that got shot down in the Arctic Circle.
Plays great on Steam Deck
Valve-Verified or Playable picks from the similar pool — ready to go on Deck out of the box.
High On Life 2
WHY THIS
Shares a dark mood with Protocol.
Deck Verified — runs on Steam Deck out of the box. Shares Action and Adventure with Protocol.
An intergalactic conspiracy threatens the fate of humanity! Team up with a wide cast of talking alien guns as you shoot, stab, and skate your way through the exotic locales to take down the bad guys and save your favorite species (humans)!
High On Life
WHY THIS
Deck Verified — runs on Steam Deck out of the box. Shares Action and Adventure with Protocol.
HIGH ON KNIFE DLC OUT NOW!! - Humanity is being threatened by an alien cartel who wants to use them as drugs. It’s up to you to rescue and partner with charismatic, talking guns, take down Garmantuous and his gang, and save the world!
Starship Troopers: Ultimate Bug War!
WHY THIS
Shares a dark mood with Protocol.
Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Protocol.
Lock and load into the Starship Troopers universe and join the Mobile Infantry in the most realistic depiction of war ever made! Experience an original story in this action-packed, first-person retro shooter. Would you like to know more?
Frequently asked about Protocol
- Is Protocol verified for Steam Deck?
- Yes — Protocol is Steam Deck Verified, meaning Valve has confirmed it runs well on the Deck with full controller, text legibility, and default configuration support.
- How much does Protocol cost?
- Protocol is listed on Steam at 8.99 USD (current store price; Steam sales may reduce this temporarily).
- What games are most similar to Protocol?
- Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Protocol are Super Bio-Man, High On Life 2, Escape Condition.
- Who developed Protocol?
- Protocol was developed by Fair Games Studio and published by Sad Horse studio.
imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Protocol.
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