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Demonsomnia

Also known as Demonsomnia, d, demonsomnia

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.

Last update
17 May 2026
Players now
0
Original sources
1
Latest update
Announcement

Rebuilding Demonsomnia: How Far Have We Come?

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…

1 changeMaps
Latest updates

Update history

Browse past updates and patch notes for this game.

18updates

Gallery

In-game media

Achievements

Community progression

Top picks from 2 Steam achievements, sorted by player unlock rates.

  • INJECTION RECEIVEDHidden73.1%
  • SUCCESSFUL HUNTHidden10.3%