IMHO.

Games like Smile Protocol

If Smile Protocol is your kind of game, the closest matches are They Killed Your Cat, Eternal Hatred and INFEES — picked from the ranked list below. 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.

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About Smile Protocol: Survive intense combat, earn rewards, open cases, unlock rare skins, and customize your arsenal in this high-pressure survival FPS where every run matters.

ActionIndieSimulationCasualEarly AccessWindowsby OxygenStudio
Smile Protocol — Steam game cover

Players who liked Smile Protocol also play

Steam players who put hours into Smile 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.

  1. They Killed Your Cat

    WHY THIS

    Top pick for Smile Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Smile Protocol.

    A short but relentless first-person shooter featuring manual reloading, walking, and blinking, with settings that let you customize your experience.

    2026ActionIndieSimulation6.99 USDDeck PlayableSteam ↗
  2. Eternal Hatred

    WHY THIS

    Second-strongest match for Smile Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Smile Protocol.

    Eternal Hatred is a fast-paced indie shooter blending the aesthetics of ULTRAKILL and Quake. At its core lies a dark story about the nature of human cruelty and an attempt to drown out inner pain within the abyss of one's own consciousness.

    2026ActionIndieAdventureSteam ↗
  3. INFEES

    WHY THIS

    Third-strongest match for Smile Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Smile Protocol.

    Infees is a singleplayer voxel game. At the moment it has only one playable mode where you have to kill zombies and survive as long as possible, there are many weapons, and upgrades at your disposal to make this task easier!

    2021ActionIndieEarly AccessFreeDeck PlayableSteam ↗
  4. Bone Mayhem

    WHY THIS

    Ranked #4 for Smile Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action with Smile Protocol.

    Bone Mayhem is a first person shooter versus waves of enemies, where player can apply modifications to weapon and active abilities.

    2022ActionFree To PlayFreeSteam ↗
  5. THNT : Target Hunt 'N Terminate

    WHY THIS

    Ranked #5 for Smile Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Smile Protocol.

    You’ve woken up in an artificial body on a strange and hostile world. Can you uncover its secrets and fight your way out? Take part in a metal fueled FPS single-player campaign that combines frantic action with tactical decision-making.

    2023ActionIndieEarly Access16.99 USDSteam ↗
  6. REAVER

    WHY THIS

    Ranked #6 for Smile Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Smile Protocol.

    REAVER is an ultra-fast-paced FPS that endows you with the mobility and weapon mechanics to reave through arenas of killer machines with grace and efficiency. Push the boundaries of speed and style in this next-gen movement-shooter.

    2023ActionIndieEarly Access13.99 USDDeck PlayableSteam ↗
  7. UpGun

    WHY THIS

    Ranked #7 for Smile Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Casual with Smile Protocol.

    Face your friends in UpGun! Use each round to accumulate skills and overtake your opponents in this crazy deathmatch!

    2021ActionCasualFreeDeck PlayableSteam ↗
  8. Strike Vector

    WHY THIS

    Ranked #8 for Smile Protocol fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Smile Protocol.

    "Strike Vector is gorgeous shooter with strong mechanics and lots of customisation" 7.7/10 – IGN"it more than makes up for by being a gorgeous, intensely competitive experience that matches its aesthetic appeal with pure shooter satisfaction"– 7.

    2014ActionIndieSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Doki Doki Literature Club!

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Casual with Smile 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.

    2017IndieFree To PlayCasualFreeDeck PlayableSteam ↗
  2. Life is Strange - Episode 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Smile 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.

    2015ActionAdventureFreeDeck PlayableSteam ↗
  3. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Smile Protocol.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  4. 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 Smile 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.

    2024ActionIndieAdventureFreeDeck PlayableSteam ↗
  5. STRAFTAT

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Smile Protocol.

    STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.

    2024ActionFreeDeck PlayableSteam ↗
  6. Counter-Strike:Global Offensive

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Smile Protocol.

    Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).

    2012ActionFree To PlayFreeDeck PlayableSteam ↗
  7. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Smile Protocol.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  8. The Expendabros

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Smile Protocol.

    The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.

    2014ActionIndieAdventureFreeDeck VerifiedSteam ↗

More from OxygenStudio

Other recommendable Steam games by OxygenStudio, ranked by review count so the studio's hits land first.

  1. Ground Parkour : First Mission

    WHY THIS

    Another title from OxygenStudio, the studio behind Smile Protocol. Shares Action and Casual with Smile Protocol.

    Ground parkour: First Mission, in short, you compete with yourself to reach the highest point on the track with different characters and different abilities in a construction site in the city. Each character has different abilities and you progress on this track full of obstacles. Enjoy!

    2023ActionStrategyAdventure4.99 USDSteam ↗
  2. Don't Leave

    WHY THIS

    Another title from OxygenStudio, the studio behind Smile Protocol. Shares Action and Indie with Smile Protocol.

    Welcome to a mysterious adventure where justice and the supernatural intertwine! Judge Harlan, in his old country cottage, faces a mysterious presence after his mother's sudden departure. Explore justice's limits in this extraordinary tale!

    2023ActionStrategyIndie6.99 USDSteam ↗
  3. Sinister Hospital

    WHY THIS

    Another title from OxygenStudio, the studio behind Smile Protocol. Shares Action and Indie with Smile Protocol.

    In the dark forests of Duskwood town, an abandoned hospital rises ominously. Despite its closure years ago, "Sinister Hospital" harbors terrifying secrets. The player enters to follow the trail of a group of lost children from the town. There lies a dark journey and quest for justice: Judge Harlan.

    2024ActionStrategyIndie7.99 USDSteam ↗
  4. Satan Moans

    WHY THIS

    Another title from OxygenStudio, the studio behind Smile Protocol. Shares Action and Indie with Smile Protocol.

    Are you ready for an adrenaline-fueled adventure with "Satan Moans"? In this horror-packed game, you'll explore the supernatural events surrounding a teenager returning home in the dead of night. Are you ready to dive into a suspenseful universe?

    2024ActionStrategyIndie5.99 USDSteam ↗
  5. Grouls

    WHY THIS

    Another title from OxygenStudio, the studio behind Smile Protocol. Shares Action and Indie with Smile Protocol.

    Uncover the chilling secrets of an abandoned house as Denis. Collect body parts, solve puzzles, and escape terrifying entities. Your choices shape your fate. Can you survive the nightmare?

    2024ActionStrategyIndie3.99 USDSteam ↗
  6. Night Market Simulator

    WHY THIS

    Another title from OxygenStudio, the studio behind Smile Protocol. Shares Indie and Simulation with Smile Protocol.

    Start your market from scratch, choose and price your own products. Every sale leads to new licenses, bigger spaces, and exciting new opportunities. Take full control of your warehouse layout, manage your staff wisely, and lay the foundation for your very own market empire!

    2025StrategyIndieSimulation11.99 USDSteam ↗
  7. Submeris

    WHY THIS

    Another title from OxygenStudio, the studio behind Smile Protocol. Shares Action and Indie with Smile Protocol.

    Submeris is an underwater mining adventure set beneath a mysterious island. Dig, upgrade your gear, survive dangerous depths, and uncover the legendary treasure hidden far below the ocean floor!

    2025ActionStrategyIndie4.99 USDSteam ↗
  8. Sweet Toys Simulator

    WHY THIS

    Another title from OxygenStudio, the studio behind Smile Protocol. Shares Indie and Simulation with Smile Protocol.

    Start your sweet store from scratch!. Pick and price your own toys and candies. Unlock new licenses with every sale, expand your shop, hire staff, and build the most colorful toy & candy empire ever! Manage shelves, set prices, and make your customers smile! 🧸🍭🎉

    2025StrategyIndieSimulation9.99 USDSteam ↗

Frequently asked about Smile Protocol

What games are most similar to Smile Protocol?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Smile Protocol are They Killed Your Cat, Eternal Hatred, INFEES.
Who developed Smile Protocol?
Smile Protocol was developed by OxygenStudio.

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 Smile Protocol.

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