IMHO.

Single-player games like In Tenebris

Below are 8 single-player Steam games similar to In Tenebris, 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 In Tenebris page.

Ranked picks

  1. 1
    Below, Rusted Gods — Steam game cover

    Below, Rusted Gods

    Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Indie and Adventure with In Tenebris.

    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 →
  2. 2
    Ward 9 — Steam game cover

    Ward 9

    Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Indie and Adventure with In Tenebris.

    Enter the minds of people who never let anyone win. Break their defenses, expose protected truths, and decide which memories the Source is allowed to keep in this sci-fi psychological horror game.

    2026IndieAdventureSingle-playerSimilar games →
  3. 3
    SOMA — Steam game cover

    SOMA

    Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Action and Indie with In Tenebris.

    From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.

    2015ActionIndieAdventure29.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    EMOTIONLESS : The Last Ticket — Steam game cover

    EMOTIONLESS : The Last Ticket

    Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Adventure with In Tenebris.

    Step into a liminal, cosmic horror experience set in an abandoned amusement park. Uncover the haunting narrative behind its twisted rides and empty tunnels to discover what lurks within a reality that shouldn't exist…

    2025Adventure9.99 USDSingle-playerSimilar games →
  5. 5
    Conarium — Steam game cover

    Conarium

    Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Indie and Adventure with In Tenebris.

    Conarium is a chilling Lovecraftian game, which follows a gripping story involving four scientists and their endeavor to challenge what we normally consider to be the ‘absolute’ limits of nature. Inspired by H.P. Lovecraft’s novella "At the Mountains of Madness", but largely set after the original story.

    2017IndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Still Wakes the Deep — Steam game cover

    Still Wakes the Deep

    Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Action and Indie with In Tenebris.

    1975. Disaster strikes the Beira D oil rig off the coast of Scotland. Navigate the collapsing rig to save your crew from an otherworldly horror on the edge of all logic and reality in this 3x BAFTA Games Award-winning narrative horror experience.

    2024ActionIndieAdventure34.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Moons of Madness — Steam game cover

    Moons of Madness

    Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Adventure with In Tenebris.

    Moons of Madness is a first-person, story-driven cosmic horror game where the scientific exploration of Mars meets the supernatural dread of Lovecraft.

    2019Adventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Transient: Extended Edition — Steam game cover

    Transient: Extended Edition

    Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Indie and Adventure with In Tenebris.

    H.P. Lovecraft meets Cyberpunk. Delve deep into a dystopian world and investigate what is happening to you and your friends in a domed city. Solve puzzles, hack systems and plug in to explore other dimensions. Discover a truth that might tear apart your sanity and question your very existence.

    2020IndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →