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33% positive of 278 · Mostly Negative · Live from Steam
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Free on Steam. The demo has its own app, so its players are counted separately.
Demonsomnia is a CO-OP multiplayer bodycam horror game focused on the impact of nuclear reactions. Radiation has spread everywhere, so put on your gas mask. Your goal is to activate the nuclear reactor device and escape without being caught by mutants.
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What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 33% on 2026-11-01 → 33% today (278 reviews)
Works, but may need extra effort. Results from Valve's own testing.
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Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Patch Notes 1.4.4 Here is an image from our mode, which we haven’t released yet but plan to publish with a major update and marketing campaign once it’s perfected: https://i.imgur.com/b8JSIsM.png Our plan is to transform Armed Mode into an Extraction-style exp…
Hello, we're here with an important announcement! We've added a new mode to the game called Escape Mode. Since Armed Mode was, to be honest, a bad and boring mode, we've decided to remove it for now and keep it in the background as we plan to bring it back wit…
Hello, The fire issue appearing on the lobby screen in Demon mode has been fixed. The key system for equipping devices has been changed. Some bugs have been fixed. (As you can see from the frequency of updates, we continue to fix these bugs quickly. We are awa…
Hello, The issue of bullets passing through mutants has been largely fixed. (We will continue to work on this.) Some issues with the bullet's exit point have been fixed for all weapons. The problem of moving dead mutants when colliding with them has been fixed…
Hello, The chronic drop problem experienced on approximately 1 out of every 10 computers has been resolved. This is the solution to the drop problem that occurs automatically every 5 seconds. We are aware of other drop issues and FPS drops during combat, and w…
Patch Notes v1.4 We apologize for the frequent updates. We have reverted to the previous version. (The version where nightfall was added, fisheye was disabled by default for better graphics, the jumping mutant issue was fixed, and the dog was removed). The mul…
Hello everyone! It’s been about three months since our last announcement. So, what's been happening during this time? We're excited to share that we've laid the foundation for the "New Version" of our game! Most of our weapons are now complete. The first map i…
Hello! With this approximately 2GB patch, we’ve fixed several bugs that were reported to us. Additionally, we’ve resolved the persistent network connection issue. But what about the more significant ones? The only way to address them is by rebuilding the game …
When we last activated our demo, it became one of the most played demos in the world. Since the day we deactivated it, we have never made it available again. But, I think the time has come. As of now, our demo is ACTIVE. You can also play it online. Since the …
Hello, We are aware of the shortcomings and will continue working to avoid disappointing our audience with negative feedback. We are aware of the shortcomings and are working on an update to fix the bugs now. We are aware of all the feedback and the bugs we ma…
Hello, We have reached the end of a long journey, and we are excited to announce the release of our game in Early Access. Demonsomnia features 3 different modes, combining multiple concepts in one game, and is priced lower than it should be. It also has a larg…
Hello everyone! Demonsomnia has received tremendous interest and entered the trending demos list. Moreover, it has surpassed thousands of games and secured a place at the top. Although the demo did not fully meet the expectations set by the trailer, we are gra…
Demonsomnia will be available for free during Next Fest! Please remember that our game is a demo; it may contain bugs, and with major updates, it will change significantly. Future updates will include very surprising features that are not found in other games.…