IMHO.

Single-player games like The Anomaly Protocol

Below are 8 single-player Steam games similar to The Anomaly Protocol, 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 The Anomaly Protocol page.

Ranked picks

  1. 1
    You Are Grounded — Steam game cover

    You Are Grounded

    Single-player alternative to The Anomaly Protocol — playable solo, no multiplayer required. Shares Indie with The Anomaly Protocol.

    "You Are Grounded" is a short psychological horror-slasher game from a first-person perspective. A terrifying killer clown terrorizes a teenager and his family on Halloween Eve.

    2024IndieSimulation4.99 USDSingle-playerSimilar games →
  2. 2
    Save Twiks — Steam game cover

    Save Twiks

    Single-player alternative to The Anomaly Protocol — playable solo, no multiplayer required. Shares Indie with The Anomaly Protocol.

    “Save Twiks” - psychological horror from the first person. The Kitten named Twiks us lost in a giant train and you will have to go though real horror to find it. “Did you hear this? I think he just meowed in next car”.

    2024Indie4.99 USDSingle-playerSimilar games →
  3. 3
    Lonely Christmas — Steam game cover

    Lonely Christmas

    Single-player alternative to The Anomaly Protocol — playable solo, no multiplayer required. Shares Indie with The Anomaly Protocol.

    It’s a story about an 8-year-old boy Kevin who was left alone at home at Christmas. Protect your house from a crazy robber and wait for your parents. Can you handle with it? We’ll find out.

    2024IndieAdventureSimulation3.49 USDSingle-playerSimilar games →
  4. 4
    Sasaeng | 사생 — Steam game cover

    Sasaeng | 사생

    Single-player alternative to The Anomaly Protocol — playable solo, no multiplayer required. Shares Indie with The Anomaly Protocol.

    A first-person psychological horror game about the life of a K-pop idol. Explore a luxury apartment, Korean streets, and your agency building as you confront the unsettling truth hidden beneath the surface.

    2025IndieAdventureSimulation3.99 USDSingle-playerSimilar games →
  5. 5
    Platform 8 — Steam game cover

    Platform 8

    Single-player alternative to The Anomaly Protocol — playable solo, no multiplayer required. Shares Indie with The Anomaly Protocol.

    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 →
  6. 6
    Shift 87 — Steam game cover

    Shift 87

    Single-player alternative to The Anomaly Protocol — playable solo, no multiplayer required. Shares Indie with The Anomaly Protocol.

    Your task today: Memorize your environment and report any anomalies. Good luck with your shift! "Shift 87" is an observation horror game with subtle anomalies and unsettling occurrences.

    2024IndieAdventureCasual4.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Clink — Steam game cover

    Clink

    Single-player alternative to The Anomaly Protocol — playable solo, no multiplayer required. Shares Indie with The Anomaly Protocol.

    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
    The Cabin Factory — Steam game cover

    The Cabin Factory

    Single-player alternative to The Anomaly Protocol — playable solo, no multiplayer required. Shares Indie with The Anomaly Protocol.

    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.

    2024IndieAdventureSimulation2.99 USDDeck VerifiedSingle-playerSimilar games →