Demonsomnia
Offers
Trailers & screenshots
1 / 15



About Demonsomnia
Demonsomnia is a co-op multiplayer body-camera horror game about the effects of nuclear reactions. You are one of four people assigned by the government to investigate them. Your goal is to activate a nuclear reactor device and escape without being caught by mutants. The entities you encounter may be radiation-created, mutated species, hallucinations or unknown beings.
Game modes
Demonsomnia has three modes:
- Building: With no weapons, collect the necessary items inside a building without making noise, then find a way to escape. The executioner inside can hear both in-game sounds and sounds from your real-life microphone.
- Forest: Take a weapon into the forest and collect the items needed to hunt the demon in the misty woods. The forest is inhabited by villagers and strange mutated creatures. After hunting the demon, inject its fluid and add it to the nuclear device.
- Mansion: Hunt the demon in the mansion at the center of a dark village. You have no weapons.
Equipment and teamwork
Your body camera lets you report encounters with entities to your friends over the radio, if they are still alive. Areas with high radiation contain useful items such as radiation salt, which you use to hunt the demon. You can also find tools and devices for the mission, and buy weapons such as pistols and machine guns.
You can play with friends or other players. Working together, cooperating with your team and guiding its members are part of the mission.
Frequently asked questions
The best price for Demonsomnia is $13.99 at Steam. It is the only shop with an offer that activates in your country.
The minimum requirements for Demonsomnia are: Windows 10, GeForce GTX 970, Intel Core i5-4430, 8 GB RAM, 20 GB storage. It runs on Windows only. The recommended specs are in the System requirements section.
Yes. Demonsomnia has multiplayer and a single-player mode. It supports online co-op.
Mostly, yes. Valve rates Demonsomnia as Playable on the Steam Deck: it runs, but may need some manual setup.
Yes. Demonsomnia is the full base game. You need nothing else to play it.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.










