IMHO.

Single-player games like Into The Unknown

Below are 8 single-player Steam games similar to Into The Unknown, 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 Into The Unknown page.

Ranked picks

  1. 1
    Devil Inside Us: Roots of Evil — Steam game cover

    Devil Inside Us: Roots of Evil

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

    In this story focused horror game, you are a priest! And you need to help a family with their cursed house, explore, follow your visions, find the root, and exorcize it!

    2021ActionIndieAdventure14.99 USDSingle-playerSimilar games →
  2. 2
    Don't Leave — Steam game cover

    Don't Leave

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

    Welcome to a mysterious adventure where justice and the supernatural intertwine! Judge Harlan, in his old country cottage, faces a mysterious presence after his mother's sudden departure. Explore justice's limits in this extraordinary tale!

    2023ActionStrategyIndie6.99 USDSingle-playerSimilar games →
  3. 3
    Pacify — Steam game cover

    Pacify

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

    An online co-op horror game where you pacify, weaken and capture supernatural creatures for PAH Inc. Each level has a different story, unique monsters, and multiple endings. Play single player or together with up to 6 friends. Includes proximity voice chat with fun effects.

    2019ActionStrategyIndie4.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    Nuckelavee — Steam game cover

    Nuckelavee

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

    You awake in the night to a foul smell. Your crops wilt, livestock perish. He has risen. Find the artifacts, break the curse, save your home.

    2024ActionStrategyIndie4.99 USDSingle-playerSimilar games →
  5. 5
    Corridor Exit 8 — Steam game cover

    Corridor Exit 8

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

    A first-person psychological horror game based on tension and perception testing. You walk through an endless corridor, noticing anomalies around you and trying to make the right decision at every step. Escape is possible with eight correct choices, but one mistake will start everything over.

    2025StrategyIndieAdventure1.99 USDSingle-playerSimilar games →
  6. 6
    The Mare of Jonah — Steam game cover

    The Mare of Jonah

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

    A first-person psychological horror game where a young boy is trapped in a haunted, decaying mansion. Run, hide, and outsmart vengeful spirits as you uncover dark, twisted secrets. Can you survive the nightmare that waits in every shadow?

    2024ActionIndieAdventure11.99 USDSingle-playerSimilar games →
  7. 7
    Downstairs 2 Nightfall — Steam game cover

    Downstairs 2 Nightfall

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

    Can you unlock the secrets of darkness and find out what happened to your girlfriend in Downstair 2 Nightfall, developed by the dreamers who harbor the mysterious secrets of history? I don't think so...

    2024ActionIndieAdventureFreeSingle-playerSimilar games →
  8. 8
    The Museum — Steam game cover

    The Museum

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

    A content creator enters the cursed Museum for views, but finds something watching. Solve twisted puzzles, survive a ghost’s wrath, and choose your ending in this survival horror tale.

    2025ActionStrategyIndie2.99 USDSingle-playerSimilar games →