Co-op games like Somnum
Below are 8 cooperative Steam games similar to Somnum, ranked by player overlap and content similarity. Every pick supports cooperative play — online co-op, LAN co-op, or shared/split-screen — so you can play with friends right out of the box. imho.run pulls from the same Steam category data Valve uses internally, so "Co-op" here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Somnum page.
Ranked picks
- 1
EscapeTheBrainrots
LAN Co-op alternative to Somnum — playable with friends. Shares Indie and Adventure with Somnum.
A chaotic local co-op horror game where you and your friends must survive bizarre creatures, answer twisted questions, and outsmart the Brainrots.
- 2
Dave's House
Online Co-op alternative to Somnum — playable with friends. Shares Action and Indie with Somnum.
In this frantic first-person co-op horror, answer the phone before Grandma eats you! Cook the food exactly as ordered, or she’ll eat you! Throw the food on the table and hide—don’t let it fall, or she'll eat you! If she finds you, RUN! If she catches you... don't get eaten!
- 3
NightBreak
Online Co-op alternative to Somnum — playable with friends. Shares Action and Adventure with Somnum.
NightBreak is a co-op prison escape game set at night. Start in your cell and try to escape the prison with your friends. Explore, find tools, unlock doors, avoid guards and lights, and stay quiet — too much noise or one wrong step can give away your position.
- 4
Hallowed Pumpkins
LAN Co-op alternative to Somnum — playable with friends. Shares Action and Indie with Somnum.
Hallowed Pumpkins is a simple survival light-horror with shooting and hiding mechanics. For the best experience this game is recommended to be played in multiplayer mode with your friends to fight with or against each other.
- 5
Echo Mates
Online Co-op alternative to Somnum — playable with friends. Shares Action and Indie with Somnum.
To see, you must speak. To speak is to be found. A co-op horror in near-total darkness where every sound sends out a wave that lights the level — and calls whatever lives in it. 1–4 players, real voice, microphone required.
- 6
What The Maze
Online Co-op alternative to Somnum — playable with friends. Shares Action and Indie with Somnum.
"What The Maze" is a horror survival and puzzle game in one. You have to fight for survival as you search for the exit of the huge maze. Register for the experiment today!
- 7
Moloch Kombinat
Online Co-op alternative to Somnum — playable with friends. Shares Action and Indie with Somnum.
you are comrade chibi. working for the moloch kombinat. your job? earn munt.... if you dont... guess you have to find out! 6 Player Coop!
- 8
The Backrooms : Last Expedition
Online Co-op alternative to Somnum — playable with friends. Shares Action and Indie with Somnum.
"The Backrooms: Last Expedition" is a cooperative horror game designed for 1 to 4 players. Its main objective is to create an enjoyable gaming experience for friends. Players will navigate through terrifying levels, filled with various entities and dangers, as they strive to escape.