IMHO.

Single-player games like What You Didn't See

Below are 8 single-player Steam games similar to What You Didn't See, 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 What You Didn't See page.

Ranked picks

  1. 1
    Angels In Orbit — Steam game cover

    Angels In Orbit

    Single-player alternative to What You Didn't See — playable solo, no multiplayer required. Shares Action and Indie with What You Didn't See.

    The year is 2170. An anomaly has ripped through the AIO Station, leaving a lone technician fighting to survive. As the silence of deep space closes in, biblical angels descend, beginning trials of morality, judgment, and the price of human ambition.

    ActionIndieAdventureSingle-playerSimilar games →
  2. 2
    TALLREAPER — Steam game cover

    TALLREAPER

    Single-player alternative to What You Didn't See — playable solo, no multiplayer required. Shares Indie with What You Didn't See.

    A seemingly simple task given to you by the Baron, turns into living hell, revealing a dark, surreal and introspective story, as you - a prisoner - are tasked with obtaining a fallen knights sword inside an underground crypt.

    IndieSingle-playerSimilar games →
  3. 3
    Mirror Forge — Steam game cover

    Mirror Forge

    Single-player alternative to What You Didn't See — playable solo, no multiplayer required. Shares Indie and Adventure with What You Didn't See.

    Mirror Forge is a first-person psychological survival horror game. Roam between realities of fear, madness & machinery. Solve puzzles, explore an atmospheric world, survive horrifying entities.

    2022IndieAdventureSimulation12.99 USDSingle-playerSimilar games →
  4. 4
    Heart attack — Steam game cover

    Heart attack

    Single-player alternative to What You Didn't See — playable solo, no multiplayer required. Shares Action and Adventure with What You Didn't See.

    There are ghosts in the dark, in order to survive you need to light your way, but all the items for this are limited.

    2023ActionAdventure0.99 USDSingle-playerSimilar games →
  5. 5
    The Backrooms: Survival — Steam game cover

    The Backrooms: Survival

    Single-player alternative to What You Didn't See — playable solo, no multiplayer required. Shares Action and Indie with What You Didn't See.

    Survival horror with roguelike elements. Explore randomized levels with different items and entities while trying to maintain your thirst, hunger, and sanity, ensuring a new experience every time. Play alone or with up to TEN friends online! Cross-platform multiplayer with Nintendo Switch.

    2023ActionIndieAdventure9.99 USDSingle-playerSimilar games →
  6. 6
    I'm on Observation Duty 3 — Steam game cover

    I'm on Observation Duty 3

    Single-player alternative to What You Didn't See — playable solo, no multiplayer required. Shares Indie and Adventure with What You Didn't See.

    A thrilling psychological horror game. Your job is to look for anomalies in a haunted house. If you see anyhting suspicious (furniture moving, extra objects, intruders), take a photo and send a report. Includes both VR- (windows only) and non-VR (windows, mac, linux)-versions.

    2020IndieAdventure2.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Transliminal: Beyond The Backrooms — Steam game cover

    Transliminal: Beyond The Backrooms

    Single-player alternative to What You Didn't See — playable solo, no multiplayer required. Shares Action and Indie with What You Didn't See.

    An unsettling rogue-lite survival horror adventure. Iconic levels reshape around you. Classic and original entities lurk as greater beings bid for your favor. Collect relics and strange items. Grow stronger. Survive, escape, or claim more uncertain fates. Fall in. Get lost. Go beyond The Backrooms.

    2022ActionIndieAdventure12.49 USDSingle-playerSimilar games →
  8. 8
    Below, Rusted Gods — Steam game cover

    Below, Rusted Gods

    Single-player alternative to What You Didn't See — playable solo, no multiplayer required. Shares Indie and Adventure with What You Didn't See.

    You are the lifeline supporting an expedition into the unknown. Keep both yourself and your squad alive by interpreting instrument readings, explore the facilities, and uncover something ancient and eager to be born.

    2026IndieAdventureSimulation7.99 USDSingle-playerSimilar games →