IMHO.

Single-player games like Hospital 666

Below are 13 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. 1
    School 666 — Steam game cover

    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.

    2025ActionIndieAdventure9.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    Scopaesthesia — Steam game cover

    Scopaesthesia

    Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie and Adventure with Hospital 666.

    Join your friends or go it alone in this cooperative horror game. Collect pieces of evidence to uncover a mysterious disappearance, all while an unknown entity lurks in the shadows. Venture through a variety of environments, gathering what you can to progress and complete your objective...

    2023IndieAdventureSimulation14.99 USDSingle-playerSimilar games →
  3. 3
    From Hell — Steam game cover

    From Hell

    Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Action and Indie with Hospital 666.

    From Hell is a first-person psychological horror game that focuses on creating fear and tension for the player.

    2024ActionIndieAdventure5.99 USDSingle-playerSimilar games →
  4. 4
    MIRROR MIRROR — Steam game cover

    MIRROR MIRROR

    Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Action and Indie with Hospital 666.

    MIRROR MIRROR is a first-person psychological horror game. You repeatedly find yourself in a house where you find presence of unknown entities. Go through unreal experiences in the house and uncover the secrets of your fractured mind. Experience the tension and fear in the repeating space.

    2025ActionIndieAdventure1.49 USDSingle-playerSimilar games →
  5. 5
    Gnome — Steam game cover

    Gnome

    Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie with Hospital 666.

    You're taking care of your friend's house but a garden gnome appears.

    2023Indie7.99 USDSingle-playerSimilar games →
  6. 6
    APT. 407 — Steam game cover

    APT. 407

    Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie and Adventure with Hospital 666.

    A psychological horror game set in a Korean apartment building. Explore eerie occurrences throughout the complex and uncover the truth behind them.

    2025IndieAdventure2.99 USDSingle-playerSimilar games →
  7. 7
    Clink — Steam game cover

    Clink

    Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie and Adventure with Hospital 666.

    You are a lonely woman, secluded in a house with your cat... and the secrets of the past. What hides within your mind — illness, or something otherworldly? Nightmares and reality intertwine… everything is so foggy. Do you have the courage to remember what happened?

    2025IndieAdventureSimulation4.99 USDSingle-playerSimilar games →
  8. 8
    EXPEDITION TO THE BACKROOMS — Steam game cover

    EXPEDITION TO THE BACKROOMS

    Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Action and Indie with Hospital 666.

    You are the exploration team from company Async, you arrive to reported anomaly place and searching for anomalies, but what would you find? Prepare yourself for a gripping and heart-pounding adventure in EXPEDITION TO THE BACKROOMS, where every step could be your last.

    2025ActionIndieAdventure5.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Platform 8 — Steam game cover

    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.

    2024IndieAdventureSimulation3.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    I'm on Observation Duty — Steam game cover

    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?

    2019Indie2.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    BLACK BOX LSS - The Shining Immortal — Steam game cover

    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.

    2023IndieRPGFree To PlayFreeDeck PlayableSingle-playerSimilar games →
  12. 12
    [Chilla's Art] Shinkansen 0 | 新幹線 0号 — Steam game cover

    [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)

    2024Indie6.99 USDSingle-playerSimilar games →
  13. 13
    EXIT — Steam game cover

    EXIT

    Single-player alternative to Hospital 666 — playable solo, no multiplayer required. Shares Indie and Adventure with Hospital 666.

    Following the instructions on your phone, in an infinite loop, find the anomaly and continue moving forward, ultimately "escaping" through the safety exit. But who is instructing you on your phone, and is he really trustworthy? Have you really escaped

    2025IndieAdventureSimulation1.99 USDSingle-playerSimilar games →