Demonsomnia

Demonsomnia

Early access since Aug 2024

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.

35% positive · 328 reviews
Not yet
In early access, active development but status unclear
Low confidence
Active Development
Development Uncertain
Not yet
In early access, active development but status unclear
Low confidence
Active Development
Development Uncertain

Where to buy

Steam $13.99
Can't confirm — worth a look
We couldn't confirm these stores carry this game.
Green Man Gaming Steam key Search IndieGala Steam key Search
Prices in USD, as listed by each store.
Buying through an affiliate store helps support the site

Evaluation

Demonsomnia entered Steam Early Access on August 13, 2024 as a co-op multiplayer bodycam horror game. From launch, the developer (Serhat Akgul / WOZIVA) was transparent about shortcomings, posting on the same day to acknowledge bugs and commit to fixing them. The game received a series of patches through late 2024, including a notable October 2024 update (v1.4.3) that overhauled the sound system and introduced a new Escape Mode while temporarily pulling the underperforming Armed Mode for a full redesign. By December 2024, the developer announced a decision to rebuild the entire game from scratch, acknowledging that the current version didn't meet their standards. On March 13, 2025, they provided a progress update on this "New Version," reporting that most weapons were complete, the first map was 90% finished, and AI systems were in active development. The developer cited a high wishlist count as motivation to continue. However, there have been no further posts of any kind since March 13, 2025 — a period of over 15 months. The rebuild that was described as in progress has not been released, and no explanation has been given for the silence. The game remains in Early Access with the original, acknowledged-to-be-flawed version still on the store. Given that a significant, incomplete rebuild was explicitly underway as of the last communication, and that the developer has now gone silent for an extended period, it is unclear whether development is still progressing.
Evidence
Developer update on ground-up rebuild: weapons mostly complete, first map 90% done, AI in active development. Last official communication from the developer.
news post · Mar 13, 2025 source development ongoing
high
Developer announces complete overhaul of Demonsomnia, acknowledging current version is insufficient. Commits to rebuilding the game and sharing previews in 2025.
news post · Dec 25, 2024 source content planned
high

Media

Details

Developer
Publisher
Demonsomnia Team
Achievements
2
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player · Multiplayer · Co-op

About this game

Demonsomnia is a CO-OP multiplayer bodycam horror game focused on the impact of nuclear reactions. Your goal is to activate the nuclear reactor device and escape without getting caught by mutants.

Demonsomnia offers 3 different game modes.


This mode is weapon-free and filled with intense suspense. Collect the necessary items inside the building without making any noise, and find a way to escape. The executioner inside can hear both in-game sounds and your real-life microphone sounds.


Grab a weapon, head to the forest, and collect the items needed to hunt the demon from the misty woods. The forest is filled with villagers and strange mutated creatures. Once you’ve hunted the demon, inject its fluid and add it to the nuclear device.


Your goal is to hunt the demon in the mansion at the center of this dark village. However, you have a problem: you have no weapons.

This CO-OP game, developed with Unreal Engine 5, offers the highest performance and graphics quality for multiplayer games!

  • Body Camera: You have a body camera. Use the radio to report to your friends when you encounter various entities—assuming they’re still alive.

    Equipment: Locate areas with high radiation; these areas contain useful items like radiation salt. You’ll use these items to hunt the demon. Many tools and devices are also available for your mission.

    Buy guns: Weapons such as pistols and machine guns will help you feel safe when you’re alone. Remember, sometimes they’re your only friends...

  • CO-OP: Play whenever you want with friends or other players.

    Teamwork: Work in harmony with your friends, cooperate with your team, and maybe even guide them. Everyone needs a leader from time to time; maybe you’re the leader they need.

The government has assigned 4 brave individuals to investigate the effects of nuclear reactions; you are one of those 4. Were these various entities created by radiation, mutated species, hallucinations, or unknown beings?

Last evaluated Jun 21, 2026
Something about this evaluation looks wrong Report illegal or harmful content