Single-player games like SOMNI
Below are 8 single-player Steam games similar to SOMNI, 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 SOMNI page.
Ranked picks
- 1

Phasmophobia
Single-player alternative to SOMNI — playable solo, no multiplayer required. Shares Action and Indie with SOMNI.
Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can.
- 2

The Devourer: Hunted Souls
Single-player alternative to SOMNI — playable solo, no multiplayer required. Shares Action and Indie with SOMNI.
Play as a paranormal investigator in our hybrid between first person survival and psychological horror story game. Investigate a haunted forest with up to 5 players CO-OP, try to lift the curse, experience a tragic story and take decisions together. Will you survive or will you lose your soul?
- 3

Escape First 2
Single-player alternative to SOMNI — playable solo, no multiplayer required. Shares Indie with SOMNI.
"Escape First 2" is the second installment of a multiplayer escape room puzzle game for virtual reality or desktop PC! It includes 3 different escape rooms to choose from and can be played competitively, co-op or solo.
- 4

DEATHWATCH
Single-player alternative to SOMNI — playable solo, no multiplayer required. Shares Action and Indie with SOMNI.
You've been tasked to observe supposedly haunted locations. Observe and log paranormal events and use the tools at your disposal to gather data on any potential paranormal threats and exterminate them if necessary.
- 5

Obsideo
Single-player alternative to SOMNI — playable solo, no multiplayer required. Shares Action and Indie with SOMNI.
Obsideo is a 1-4 player online co-op psychological horror, where you and your team of priests explore different locations experiencing paranormal events in an attempt to figure out what ghost they're dealing with and exorcise it from the property.
- 6

DeathWatchers
Single-player alternative to SOMNI — playable solo, no multiplayer required. Shares Action and Indie with SOMNI.
Use the specialized equipment at your disposal to locate & log as many paranormal events as possible. Decipher the ingredients needed for your ritual and try to exorcise any demons within. Any incorrect ingredients and you may never leave! 1-4 Players
- 7

Ghost Exorcism INC.
Single-player alternative to SOMNI — playable solo, no multiplayer required. Shares Action and Indie with SOMNI.
Ghost Exorcism INC is a horror game where you can play alone, or in a team of up to 6 exorcists. Your mission will be to identify paranormal entities, and then exorcise them.
- 8

Unpossess: Exorcism Simulator
Single-player alternative to SOMNI — playable solo, no multiplayer required. Shares Action and Indie with SOMNI.
Unpossess is a 1-4 co-op exorcism simulator game set in the early 1900s. Players take on the role of exorcists responsible for addressing cases of human possession.