Single-player games like Hospital 666
Below are 11 single-player Steam games similar to Hospital 666, 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 Hospital 666 page.
Ranked picks
- 1
School 666
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Action and Indie with Hospital 666.
School 666 is a 1-4 Player Co-op Survival Horror. You must escape this endless nightmare. Try to identify the correct path and survive the anomalies in this endless school. Some extremely powerful anomalies will catch you to their dimensions. Explore the reason why you are here... and don't die.
- 2
The Exit 8
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie and Adventure with Hospital 666.
You are trapped in an endless underground passageway. Observe your surroundings carefully to reach "The Exit 8".
- 3
![[Chilla's Art] Shinkansen 0 | 新幹線 0号 — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/2793370/header.jpg?t=1712378962)
[Chilla's Art] Shinkansen 0 | 新幹線 0号
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie with Hospital 666.
Shinkansen 0 | 新幹線 0号 is a game set in Japan where players are tasked with finding anomalies in the Shinkansen. (Japanese bullet train)
- 4
Platform 8
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie and Adventure with Hospital 666.
You are trapped on a train that runs forever. Keep an eye out for anomalies and find a way out.
- 5
PROJECT 13
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie with Hospital 666.
As one of many kidnapped and enslaved Probants of the Project 13 Group... You need to find Anomalies through your Walk. If you not obey and report , you will be stuck in it forever.
- 6
Subliminal
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie and Adventure with Hospital 666.
Subliminal is a psychological horror game inspired by the urban legend of The Backrooms. Bleeding edge lighting and rendering, handcrafted open-ended levels, light and perspective-based puzzles, nostalgic spaces, unfamiliar faces, and a rotting feeling that something is not quite right.
- 7
Floor 9
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Action and Indie with Hospital 666.
In Floor 9, you find yourself trapped in a mysterious hotel known as "Hotel Liminal." To escape, you must identify anomalies on each floor. These anomalies can be anywhere - on the ground, in paintings, or even right in front of your eyes.
- 8
The Cabin Factory
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie and Adventure with Hospital 666.
Your job at the Cabin Factory is simple: inspect the cabins and decide on whether they’re haunted or not. If you do find any anomalies, get out…immediately.
- 9
I'm on Observation Duty
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie with Hospital 666.
As an employee of a mysterious organization your job is to monitor live surveillance camera footage and spot anomalies using your sharp eyes and good memory. Can you survive the entire night shift or will you succumb into paranoia?
- 10
BLACK BOX LSS - The Shining Immortal
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie with Hospital 666.
Immerse yourself in a pixel-art visual novel that blends thrilling crime, romantic comedy, and the pursuit of love. This game depicts the story of a new employee pursuing his female boss.
- 11
Animals Hate You
Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Action and Indie with Hospital 666.
This game is a 1-4 player troll game. You have to control the character to escape with friends while every animal in sight tries to snipe you. Top-down chaos, cruel traps, and places that really do not want you to leave.