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

Lazarus Darkness
Single-player alternative to Psychosis — playable solo, no multiplayer required. Shares Action and Indie with Psychosis.
Lazarus Darkness is a first-person horror that puts the player in the shoes of Angelo Mendes, who, hindered by a plane crash, must leave an island full of demons to attend his own son's funeral. The game features various enemies and puzzles throughout an electrifying journey to escape from the demon
- 2

Fortuito: Lost History
Single-player alternative to Psychosis — playable solo, no multiplayer required. Shares Action and Indie with Psychosis.
Fortuito: Lost History is an indie adventure first-person horror, face the unknown with classic fps mechanics, solve puzzles and immerse in this bad trip!
- 3

GET EVEN
Single-player alternative to Psychosis — playable solo, no multiplayer required. Shares Action and Indie with Psychosis.
Take a deep breath... Try to remember: a girl, a chair, a bomb. Just keep... calm. Follow the voice into the depths of you memory. Relax... and search for the darkest memories in the deepest recesses of your mind. Can you find her? The clock is ticking... And this is just a part of the treatment.
- 4

Phasmophobia
Single-player alternative to Psychosis — playable solo, no multiplayer required. Shares Action and Indie with Psychosis.
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.
- 5

Demonologist
Single-player alternative to Psychosis — playable solo, no multiplayer required. Shares Action and Indie with Psychosis.
Demonologist is a Co-Op horror game that can be played with at least 1 and up to 4 players. Your goal is to identify the type of evil spirit in cursed places and exorcise it using your equipment, either alone or with your team.
- 6

Go Home Annie: An SCP Game
Single-player alternative to Psychosis — playable solo, no multiplayer required. Shares Action and Indie with Psychosis.
A twisted psychological thriller and an original story set in the SCP universe. As an employee of the SCP Foundation, test artificially created paranormal events, solve puzzles, interact with anomalies, and uncover the secrets of the Replication Division.
- 7

Demonsomnia
Single-player alternative to Psychosis — playable solo, no multiplayer required. Shares Action and Early Access with Psychosis.
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.
- 8

Lost Lullabies: The Orphanage Chronicles
Single-player alternative to Psychosis — playable solo, no multiplayer required. Shares Action and Indie with Psychosis.
"Lost Lullabies - The Orphanage Chronicles" is a Co-Op horror game set in 1980, inspired by the real stories of an orphanage ruined by a fire in 1960 Lowell. Playable with 1-4 players, the goal is to identify and expel malevolent spirits alone or with your team.