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ZERO PROTOCOL on Steam

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In this immersive sci-fi thriller, you will experience the atmosphere of classic 3D games as you solve puzzles, follow an intriguing non-linear storyline, and engage in battles with monsters.

ZERO PROTOCOL is a survival horror, atmospheric and psychological horror game developed and published by R_Games.
Released on September 26th 2024 is available on Windows, Steam Deck and Steam Machine.

It has received 367 reviews of which 317 were positive and 50 were negative resulting in a rating of 8.0 out of 10. 😎

The game is currently priced at 5.30€ on Steam with a 55% discount, but you can find it for 3.49€ on K4G.


The Steam community has classified ZERO PROTOCOL into these genres:

Media & Screenshots

Get an in-depth look at ZERO PROTOCOL through various videos and screenshots.

System requirements

These are the minimum specifications needed to play the game. For the best experience, we recommend that you verify them.

Windows
  • OS *: Windows 7 or newer
  • Processor: Intel Core i3
  • Memory: 2048 MB RAM
  • Graphics: 512 MB graphics card with WebGL support

User reviews & Ratings

Explore reviews from Steam users sharing their experiences and what they love about the game.

4 hours played
Aug. 2026
Playtime: ~3.5 hours, though there are multiple endings and secrets to uncover so you could get more life out of it. Save System: There are save points found throughout the game that you have to use. Style: Survival Horror FPS I was kind of hoping for there to be more action in the game, but overall it was a pretty fun. If you like retro graphics and want to play through a survival horror shooter, then this game will give it to you. There are multiple endings and the one I got was kind of by accident, where I made a choice without even realizing it. Personally I am not the biggest fan of multiple endings, but really only because I don’t like having to replay stuff to see them. So, I usually don’t bother. The sound track was actually pretty great. It’s worth plaything through if you can get it on sale. It’s not really doing anything innovative but it was fun. If you would like to watch a play through, I got you covered here: https://youtu.be/XXYlYipsN4s Also, if you’re so inclined, please consider subscribing to my channel (it’s free). That would be deeply appreciated, thank you.
8 hours played
May 2026
Hidden gem of a game! Great atmosphere and story. And this is one of those rare games where the story is explained perfectly not just through cryptic metaphores and ♥♥♥♥. Those are good as well, but somethimes I just need a little simplicity. This game is simplicity itself. It's not very long, about 6-7 hrs if you do all the endings. Staight forward but still very enjoyable and fun to play. A little inventory management, but the health and ammo never a problem. Easy puzzles and the levels are not mazes. There is no music in this game which adds to the atmosphere. Just ambiance and the moanings of the monsters. I really like this game. I got it on a sale, but the full price is worth it too imo.
1 hours played
March 2026
First impression after ~1 hour: ZERO PROTOCOL is a "System Shock" clone with okay graphics, okay writing, okay puzzle mechanics, and some okay enemy encounters. It's not an unforgettable experience, but a simple and entertaining, well-polished indie horror exploration and puzzle game. I'd recommend giving this a try on > 50% discount (because I am a cheap and stingy duck and my coins are meager). Score: 6/10
5 hours played
Feb. 2026
Fantastic little FPS horror. Simple combat, decent puzzles, interesting story. Would love more stuff like this from the dev.
5 hours played
Feb. 2026
Overall, this game is something I would recommend but with keeping it in mind that it's a very fast game. You can probably beat the game in about 1-2 hours once you know what to do. I got about almost 3 hours out of it. I will replay to 100% it since there are multiple endings and it's short enough to do that. Story: it's there, it's okay, not the worst but not the best. But, it's 2-3 hours max. Not much you can build in that. Gameplay: It's fine and fun. Game is just long enough with the gameplay to add what is in it. Picture taking: Loved this idea. If the dev decided to make another game similar or a sequel to this, expand on this more. Map: layout is nice and great. The map usage was there and I like it. The ping system is kind of useless, though? So, nice addition but kind of pointless? Puzzles: I would say I enjoyed all of these. There are about a few that I was like, HUH???? The generator and the matching the codes on the PC. The generator, I think it's because I was playing this at 1 am and exhausted and didn't read the paper well. But, the PC, I just couldn't figure that one out. The puzzles were actually quite engaging and the strength of this game. So, expanded combat system and puzzles. Sanity mechanic: Honestly, really cool and nice to have. Very hard to balance and whatnot. Some people hate that stuff, some people love it. For me, I really enjoyed it and found it changed the game in an interesting way. Summary: Overall, go into this knowing it's only a 2-3 hour ride. It's short and sweet. The story is just enough to pull you in. The graphics and gameplay are there and work well. Enemies are readable (♥♥♥♥ spiders, hahaha). Puzzles are great! There are some mechanics that make no sense or why you would use it. But, why not? Doesn't hurt the game. The autosave and manual save thing is weird. Multiple endings and the game being so short encourages me to replay it, which I will tomorrow. Pros: -Puzzles - I like the sanity system - hidden rooms through different systems - Multiple endings that are easily reachable and shortness of the game encourages replayability - Graphics are nice and work well to the game - The puzzles are amazing and I loved them! - Random spawn generation of key items. I love this in your game. It's really good. Cons: - Autosave mechanic vs. manual save. Not too sure why we can't just pick the autosave or the manual save when we die. - Two of the puzzles mentioned above really made me scratch my head. [spoiler Also, the puzzle with the decoder to the door is not bad, but more of a an annoying thing. ] - Game is short. I don't mind it. But, most people want a 5$ game to have a bit more too it. I'm pretty okay with it.

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Frequently Asked Questions

ZERO PROTOCOL is currently priced at 5.30€ on Steam.

Yes, ZERO PROTOCOL is currently available at a 55% discount. You can purchase it for 5.30€ on Steam.

Yes, ZERO PROTOCOL received 317 positive votes out of a total of 367 achieving a rating of 8.02.
😎

ZERO PROTOCOL was developed and published by R_Games.

Yes, ZERO PROTOCOL is playable and fully supported on Windows.

No, ZERO PROTOCOL is not playable on MacOS.

No, ZERO PROTOCOL is not playable on Linux.

Yes, ZERO PROTOCOL is playable on Steam Deck, though it might require a few minor tweaks. Make sure to check the Steam store page and community feedback on ProtonDB for exact compatibility details.

Yes, ZERO PROTOCOL is playable and fully supported on Steam Machine.

No, ZERO PROTOCOL does not support VR.

ZERO PROTOCOL is a single-player game.

No, ZERO PROTOCOL does not currently offer any DLC.

No, ZERO PROTOCOL does not support mods via Steam Workshop.

No, ZERO PROTOCOL does not support Steam Remote Play.

Yes, ZERO PROTOCOL is enabled for Steam Family Sharing. This means you can share the game with authorized users from your Steam Library, allowing them to play it on their own accounts. For more details on how the feature works, you can read the original Steam Family Sharing announcement or visit the Steam Family Sharing user guide and FAQ page.

You can find solutions or submit a support ticket by visiting the Steam Support page for ZERO PROTOCOL.

Data sources

The information presented on this page is sourced from reliable APIs to ensure accuracy and relevance. We utilize the Steam API to gather data on game details, including titles, descriptions, prices, and user reviews. This allows us to provide you with the most up-to-date information directly from the Steam platform.

Additionally, we incorporate data from the SteamSpy API, which offers insights into game sales and player statistics. This helps us present a comprehensive view of each game's popularity and performance within the gaming community.

Last Updates
Steam data 23 October 2026 23:43 UTC
SteamSpy data 20 October 2026 23:29 UTC
Steam price 27 October 2026 04:11 UTC
Steam reviews 18 October 2026 05:55 UTC

If you'd like to dive deeper into the details about ZERO PROTOCOL, we invite you to check out a few dedicated websites that offer extensive information and insights. These platforms provide valuable data, analysis, and user-generated reports to enhance your understanding of the game and its performance.

  • SteamDB - A comprehensive database of everything on Steam about ZERO PROTOCOL
  • SteamCharts - Analysis of ZERO PROTOCOL concurrent players on Steam
  • ProtonDB - Crowdsourced reports on Linux and Steam Deck ZERO PROTOCOL compatibility
ZERO PROTOCOL
Rating
8.0
317
50
Game modes
Features
Online players
1
Developer
R_Games
Publisher
R_Games
Release 26 Sep 2024
Platforms
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