IMHO.

Single-player games like The Anomaly Project

Below are 13 single-player Steam games similar to The Anomaly Project, 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 Project page.

Ranked picks

  1. 1
    Anomaly Company — Steam game cover

    Anomaly Company

    Single-player alternative to The Anomaly Project — playable solo, no multiplayer required. Shares Action and Strategy with The Anomaly Project.

    You and your crew are sent in to assess reality in this 4-player co-op horror game. Memorize the environment. Spot disturbing anomalies. Decide if the timeline is safe. One bad call—and you’re forced to start over.

    2026ActionStrategyIndie7.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    Backrooms: Into the Hole — Steam game cover

    Backrooms: Into the Hole

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

    Discover an in-between space inspired by the Backrooms series. Make your way forward by jumping into holes, find alternative paths, and survive in this labyrinthine dimension. Play solo or in co-op mode and choose your path to the exit… if there is one.

    2026IndieAdventureSimulation0.89 USDSingle-playerSimilar games →
  3. 3
    Anomaly Manor — Steam game cover

    Anomaly Manor

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

    A co-op anomaly horror game for 1–6 players. Trapped in an abandoned manor that continuously changes, you must compare your surroundings, question every movement, and detect unsettling anomalies to survive the deadly ritual.

    2026IndieAdventureSimulationSingle-playerSimilar games →
  4. 4
    Anomaly Exit — Steam game cover

    Anomaly Exit

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

    On your way home on the train, you weren't paying attention. Until you realised the train had been stopping at the same station over, and over again. Watch out for anomalies, and avoid the Anomaly Exit! Made for singleplayer and 2-6 co-operative multiplayer.

    2024IndieAdventureCasual5.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Alyanom — Steam game cover

    Alyanom

    Single-player alternative to The Anomaly Project — playable solo, no multiplayer required. Shares Adventure and Casual with The Anomaly Project.

    EXPLORE 6 entropic gateways ranging from a liminal swimming pool to an empty art museum with up to 4 friends. MEMORIZE before they change each loop, then CATALOG if any ANOMALIES occur. Spaces shift from horrific entities to comedic encounters, we have no idea what's in there, that's your job.

    AdventureCasualSingle-playerSimilar games →
  6. 6
    Find Room 96 — Steam game cover

    Find Room 96

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

    Observe your surrounding and be confident there is or is not a anomaly to progress.

    2024IndieAdventureSimulation3.99 USDSingle-playerSimilar games →
  7. 7
    What Happened to Lily? — Steam game cover

    What Happened to Lily?

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

    What Happened to Lily? Is a real-time first-person horror game. Discover the secrets and spooky truths behind the mysterious event at Miller Farm.

    2025IndieAdventureCasual3.99 USDSingle-playerSimilar games →
  8. 8
    Seybul Tech — Steam game cover

    Seybul Tech

    Single-player alternative to The Anomaly Project — playable solo, no multiplayer required. Shares Adventure and Casual with The Anomaly Project.

    Seybul Tech is a walking simulator. Navigate as an office employee, confronting peculiar encounters while in search of an exit from this enigmatic abyss.

    2023AdventureCasual0.99 USDSingle-playerSimilar games →
  9. 9
    I'm on Observation Duty — Steam game cover

    I'm on Observation Duty

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

    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 →
  10. 10
    R.E.P.O. — Steam game cover

    R.E.P.O.

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

    An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires.

    2025ActionEarly Access6.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    PEAK — Steam game cover

    PEAK

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

    PEAK is a co-op climbing game where the slightest mistake can spell your doom. Either solo or as a group of lost nature scouts, your only hope of rescue from a mysterious island is to scale the mountain at its center. Do you have what it takes to reach the PEAK?

    2025ActionIndieAdventure7.99 USDDeck VerifiedSingle-playerSimilar games →
  12. 12
    Plinbo: Roguelike Plinko — Steam game cover

    Plinbo: Roguelike Plinko

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

    UPGRADE YOUR BALLS! Roguelike meets Plinko! Every choice is a strategy; every run is a unique challenge. Build your deck to tame the balls to your will. Take your chance, craft your fate, and cash in!

    2026StrategyIndieSimulation4.89 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    H.I.A: Horror Investigation Agency — Steam game cover

    H.I.A: Horror Investigation Agency

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

    H.I.A: Horror Investigation Agency is a fun multiplayer horror game in which you and co-players have to investigate exciting horror cases. Among finding victims and evidence of the horror event that has taken place, you will be faced with jumpscares and scary monsters along your investigation.

    2024ActionIndieAdventureFreeDeck PlayableSingle-playerSimilar games →