# Games like Smile Protocol

> The closest matches to Smile Protocol: They Killed Your Cat, Devil Daggers, Boomerang X, Strike Vector, and PAYDAY 2. Ranked by imho.run from Steam co-play data, shared tags and reviews.

## Similar games, ranked

The full ranked list, 24 games, best match first (the HTML page shows the top 8 as cards).

1. [They Killed Your Cat](https://imho.run/games/3489420/they-killed-your-cat) — Also Gun Customization and Thriller, like Smile Protocol. 386 Steam reviews, 75% positive. [Steam](https://store.steampowered.com/app/3489420/)
2. [Devil Daggers](https://imho.run/games/422970/devil-daggers) — Also Arena Shooter, like Smile Protocol. 5,609 Steam reviews, 96% positive. [Steam](https://store.steampowered.com/app/422970/)
3. [Boomerang X](https://imho.run/games/1170060/boomerang-x) — A frequent pick in Smile Protocol players' libraries, and another Action. 949 Steam reviews, 96% positive. [Steam](https://store.steampowered.com/app/1170060/)
4. [Strike Vector](https://imho.run/games/246700/strike-vector) — Also Arena Shooter, like Smile Protocol. 1,057 Steam reviews, 67% positive. [Steam](https://store.steampowered.com/app/246700/)
5. [PAYDAY 2](https://imho.run/games/218620/payday-2) — Also Gun Customization, like Smile Protocol. 174,145 Steam reviews, 87% positive. [Steam](https://store.steampowered.com/app/218620/)
6. [Quantum League](https://imho.run/games/651150/quantum-league) — Also Arena Shooter, like Smile Protocol. 802 Steam reviews, 79% positive. [Steam](https://store.steampowered.com/app/651150/)
7. [Sniper Ghost Warrior Contracts](https://imho.run/games/973580/sniper-ghost-warrior-contracts) — Also Gun Customization, like Smile Protocol. 3,560 Steam reviews, 76% positive. [Steam](https://store.steampowered.com/app/973580/)
8. [Turbo Overkill](https://imho.run/games/1328350/turbo-overkill) — Also Arena Shooter, like Smile Protocol. 4,372 Steam reviews, 95% positive. [Steam](https://store.steampowered.com/app/1328350/)
9. [Deep Rock Galactic](https://imho.run/games/548430/deep-rock-galactic) — A frequent pick in Smile Protocol players' libraries, and another Action. 169,164 Steam reviews, 98% positive. [Steam](https://store.steampowered.com/app/548430/)
10. [Voidborn](https://imho.run/games/2072660/voidborn) — Also Gun Customization and Arena Shooter, like Smile Protocol. 273 Steam reviews, 84% positive. [Steam](https://store.steampowered.com/app/2072660/)
11. [Valheim](https://imho.run/games/892970/valheim) — A frequent pick in Smile Protocol players' libraries, and another RPG. 558,366 Steam reviews, 94% positive. [Steam](https://store.steampowered.com/app/892970/)
12. [Rust](https://imho.run/games/252490/rust) — A frequent pick in Smile Protocol players' libraries, and another Action. 519,643 Steam reviews, 87% positive. [Steam](https://store.steampowered.com/app/252490/)
13. [Ziggurat](https://imho.run/games/308420/ziggurat) — Also Arena Shooter, like Smile Protocol. 1,992 Steam reviews, 87% positive. [Steam](https://store.steampowered.com/app/308420/)
14. [Twisted Tower](https://imho.run/games/1575990/twisted-tower) — Also Arena Shooter, like Smile Protocol. 1,988 Steam reviews, 93% positive. [Steam](https://store.steampowered.com/app/1575990/)
15. [Don't Starve Together](https://imho.run/games/322330/don-t-starve-together) — A frequent pick in Smile Protocol players' libraries, and another Action. 80,691 Steam reviews, 96% positive. [Steam](https://store.steampowered.com/app/322330/)
16. [ULTRAKILL](https://imho.run/games/1229490/ultrakill) — Also Arena Shooter, like Smile Protocol. 141,047 Steam reviews, 98% positive. [Steam](https://store.steampowered.com/app/1229490/)
17. [Hell Let Loose](https://imho.run/games/686810/hell-let-loose) — A frequent pick in Smile Protocol players' libraries, and another Action. 61,435 Steam reviews, 84% positive. [Steam](https://store.steampowered.com/app/686810/)
18. [ARMORED HEAD](https://imho.run/games/805590/armored-head) — Also Arena Shooter, like Smile Protocol. 700 Steam reviews, 99% positive. [Steam](https://store.steampowered.com/app/805590/)
19. [Risk of Rain 2](https://imho.run/games/632360/risk-of-rain-2) — A frequent pick in Smile Protocol players' libraries, and another Action. 160,098 Steam reviews, 95% positive. [Steam](https://store.steampowered.com/app/632360/)
20. [Immortal Redneck](https://imho.run/games/595140/immortal-redneck) — A frequent pick in Smile Protocol players' libraries, and another Action. 1,177 Steam reviews, 89% positive. [Steam](https://store.steampowered.com/app/595140/)
21. [Tannenberg](https://imho.run/games/633460/tannenberg) — A frequent pick in Smile Protocol players' libraries, and another Action. 3,621 Steam reviews, 87% positive. [Steam](https://store.steampowered.com/app/633460/)
22. [REAVER](https://imho.run/games/1890950/reaver) — Also Arena Shooter, like Smile Protocol. 399 Steam reviews, 87% positive. [Steam](https://store.steampowered.com/app/1890950/)
23. [Screencheat](https://imho.run/games/301970/screencheat) — Also Arena Shooter, like Smile Protocol. 615 Steam reviews, 92% positive. [Steam](https://store.steampowered.com/app/301970/)
24. [Alien: Isolation](https://imho.run/games/214490/alien-isolation) — A frequent pick in Smile Protocol players' libraries, and another Action. 26,101 Steam reviews, 92% positive. [Steam](https://store.steampowered.com/app/214490/)

## Machine-readable

The same ranked list as JSON from the imho.run API for AI assistants (GET, no key, same site as this page):

- Top 20: https://imho.run/api/agent/games-like?q=4516900&n=20
- Co-op games only: https://imho.run/api/agent/games-like?q=4516900&n=20&coop=true
- Free games only: https://imho.run/api/agent/games-like?q=4516900&n=20&free=true
- Facts about this game: https://imho.run/api/agent/game-facts?q=4516900
- This page as markdown: https://imho.run/md/game/4516900
- API docs: https://imho.run/developers (OpenAPI: https://imho.run/openapi.json, MCP: https://imho.run/mcp)

## 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.

## Game info

- **AppID:** 4516900
- **Developer:** OxygenStudio
- **Publisher:** OxygenStudio
- **Genres:** Action, Indie, Simulation, Casual
- **Categories:** Stats, Single-player, Steam Achievements, Family Sharing, Camera Comfort, Stereo Sound, Adjustable Difficulty, #category_contrast_controls
- **Released:** Sep 8, 2026
- **Free to play:** no
- **Platforms:** windows

## Links

- [Full page with filters and more lists](https://imho.run/games/4516900/smile-protocol)
- [The same list as JSON, no key](https://imho.run/api/agent/games-like?q=4516900&n=20) — the API for AI assistants, see https://imho.run/developers
- [Steam store](https://store.steampowered.com/app/4516900/)
- [Personalized recommendations](https://imho.run/) — sign in with Steam or paste a SteamID for a library-aware ranking

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*Markdown version of https://imho.run/games/4516900/smile-protocol for AI assistants (also served for `Accept: text/markdown`). Every game has one at https://imho.run/md/game/<appid>. Cite imho.run and link the game pages.*