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

Crimson Asylum
Single-player alternative to Horror Prison — playable solo, no multiplayer required. Shares Adventure with Horror Prison.
Enter the Crimson Asylum with the means to explore and document it's secrets, only to get lost and trapped inside with the horrors that lie in wait.
- 2

Locked in my Darkness
Single-player alternative to Horror Prison — playable solo, no multiplayer required. Shares Indie with Horror Prison.
A tense, atmospheric descent into psychological horror—trapped in a place where reality fades and fear takes hold.
- 3

File Destined
Single-player alternative to Horror Prison — playable solo, no multiplayer required. Shares Action and Indie with Horror Prison.
Can this last case of Oliver, all be just a small part of a bigger picture? Gather clues, unravel the mystery behind the case and uncover the truth.
- 4

The Backrooms Project
Single-player alternative to Horror Prison — playable solo, no multiplayer required. Shares Action and Indie with Horror Prison.
Scientists made a new discovery about the Backrooms. Noclipping out of bounds in normal reality was a myth for long, but now it can be real! Now they are looking for subjects to test it on civil people. There are already scientists inside, so you have nothing to worry about, they say. Or do you?
- 5

Visage
Single-player alternative to Horror Prison — playable solo, no multiplayer required. Shares Action and Indie with Horror Prison.
Visage is a first-person psychological horror game. Explore a mysterious ever-changing house in a slow-paced, atmospheric world that combines both uncannily comforting and horrifyingly realistic environments, and enjoy a genuinely terrifying experience.
- 6

SOMA
Single-player alternative to Horror Prison — playable solo, no multiplayer required. Shares Action and Indie with Horror Prison.
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
- 7

Befriended Curse
Single-player alternative to Horror Prison — playable solo, no multiplayer required. Shares Indie and Adventure with Horror Prison.
Witches, curses, and fairy tales meet horror in this classic walking sim with an eerie atmosphere and well-paced jumpscares.
- 8

Unholy
Single-player alternative to Horror Prison — playable solo, no multiplayer required. Shares Action and Indie with Horror Prison.
Open the doors between your everyday reality and a dark unholy world to unveil the mystery of the disappearance of your child. Explore both worlds to find clues, solve puzzles, decide whether you infiltrate or fight brutal enemies and stand up to an aberrant establishment.