IMHO.

Single-player games like Improbability Control Bureau

Below are 8 single-player Steam games similar to Improbability Control Bureau, 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 Improbability Control Bureau page.

Ranked picks

  1. 1
    I'm on Observation Duty 5 — Steam game cover

    I'm on Observation Duty 5

    Single-player alternative to Improbability Control Bureau — playable solo, no multiplayer required. Shares Indie with Improbability Control Bureau.

    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?

    2022Indie9.99 USDDeck VerifiedSingle-playerSimilar games →
  2. 2
    Lost Traces: Genesis — Steam game cover

    Lost Traces: Genesis

    Single-player alternative to Improbability Control Bureau — playable solo, no multiplayer required. Shares Indie and Casual with Improbability Control Bureau.

    Uncover the terrifying truth behind the Blackwood conspiracy in this first-person psychological horror. Use emerging psychic powers to solve deep, environmental puzzles and survive the secrets of Project GENESIS.

    IndieAdventureCasualSingle-playerSimilar games →
  3. 3
    Twisted Logic: Abbotsfield — Steam game cover

    Twisted Logic: Abbotsfield

    Single-player alternative to Improbability Control Bureau — playable solo, no multiplayer required. Shares Indie with Improbability Control Bureau.

    As an Exorcist from the Office of Unexplained Phenomena, your task is to solve intricate logic puzzles - both in reality and in-game - in order to exorcise a demonic force. You have one hour.

    2024IndieAdventure4.99 USDSingle-playerSimilar games →
  4. 4
    I'm on Observation Duty 6 — Steam game cover

    I'm on Observation Duty 6

    Single-player alternative to Improbability Control Bureau — playable solo, no multiplayer required. Shares Indie with Improbability Control Bureau.

    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?

    2023Indie11.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    The Infectious Madness of Doctor Dekker — Steam game cover

    The Infectious Madness of Doctor Dekker

    Single-player alternative to Improbability Control Bureau — playable solo, no multiplayer required. Shares Indie and Casual with Improbability Control Bureau.

    YOU are a psychiatrist, trying to solve a murder whilst treating the unusual patients of the recently deceased Doctor Dekker. Type a question - patients reply in full screen video and have questions for you too but be careful what you say. Your words determine their eventual fates, and your own!

    2017IndieAdventureSimulation8.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    The Gretlow Tapes — Steam game cover

    The Gretlow Tapes

    Single-player alternative to Improbability Control Bureau — playable solo, no multiplayer required. Shares Indie with Improbability Control Bureau.

    Armed with nothing but your camera, investigate the abandoned Gretlow House in this short, atmospheric horror game. Uncover a chilling mystery through a realistic found-footage lens.

    2025IndieAdventure9.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Para Eyes — Steam game cover

    Para Eyes

    Single-player alternative to Improbability Control Bureau — playable solo, no multiplayer required. Shares Indie and Casual with Improbability Control Bureau.

    Para Eyes is a spot the difference horror game. Flip through security cameras and find anomalies. But be careful not to go insane.

    2025IndieCasual9.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    The Room Three — Steam game cover

    The Room Three

    Single-player alternative to Improbability Control Bureau — playable solo, no multiplayer required. Shares Indie with Improbability Control Bureau.

    Lured to a remote island, you find yourself confined within the rooms of an ominous mansion. You must draw upon all your puzzle-solving ability to navigate a series of trials devised by a mysterious figure known only as “The Craftsman”. Do you have what it takes to escape?

    2018IndieAdventure5.99 USDDeck PlayableSingle-playerSimilar games →