Single-player games like Somnum
Below are 8 single-player Steam games similar to Somnum, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player 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
Single-player alternative to Somnum — playable solo, no multiplayer required. 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
Single-player alternative to Somnum — playable solo, no multiplayer required. 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

Hallowed Pumpkins
Single-player alternative to Somnum — playable solo, no multiplayer required. 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.
- 4

What The Maze
Single-player alternative to Somnum — playable solo, no multiplayer required. 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!
- 5

The Backrooms : Last Expedition
Single-player alternative to Somnum — playable solo, no multiplayer required. 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.
- 6

CODE EXIT
Single-player alternative to Somnum — playable solo, no multiplayer required. Shares Action and Indie with Somnum.
Enter Pantheon, a futuristic city swallowed by darkness and ruled by a rogue AI. Team up with up to 4 players and survive an adaptive pursuer that learns from every mistake. Complete the mission, uncover Minerva’s secrets, and find a way out before the city consumes you.
- 7

Breach Signal
Single-player alternative to Somnum — playable solo, no multiplayer required. Shares Action and Indie with Somnum.
Breach Signal is a 1-6 player co-op cosmic horror game. As a recruit of the FNA, lead expeditions into strange places and investigate mysterious anomalies that threaten our reality.
- 8

PURGE - Three vs Blood
Single-player alternative to Somnum — playable solo, no multiplayer required. Shares Action and Indie with Somnum.
PURGE - THREE VS BLOOD presents an exciting arena-style zombie apocalypse. Battle ravenous zombie waves with up to 3 players, unlock ranks, maps, unique characters, and a variety of weapons and traps.