IMHO.

Single-player games like Roots of Insanity

Below are 10 single-player Steam games similar to Roots of Insanity, 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 Roots of Insanity page.

Ranked picks

  1. 1
    Beyond Extinct — Steam game cover

    Beyond Extinct

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    Beyond Extinct is a First Person Shooter where you take on the role of a survivor in an underground facility. You have to fight your way through waves of monsters to reach the surface. Unlimited fighting combinations in randomly generated levels with 20+ weapons, 50+ items and more!

    2020ActionIndieAdventure10.99 USDSingle-playerSimilar games →
  2. 2
    Insomnia is Coming — Steam game cover

    Insomnia is Coming

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    INSOMNIA IS COMING. You won’t sleep. In a world without rules, you sink into chaos – drugs, alcohol, betrayal. Each choice drags you deeper. A psychological FPS horror about guilt and sin, where sleepless nights blur reality and force you to face truth… or the end.

    2026ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    Driving After Work : Cafe Guilt — Steam game cover

    Driving After Work : Cafe Guilt

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    Battle the monstrous Cafe Owner Spider and navigate the deadly underground sewers to escape. Manage your ammunition, health, and fuel carefully to survive the nightmare

    ActionIndieAdventureSingle-playerSimilar games →
  4. 4
    Into Death and Beyond — Steam game cover

    Into Death and Beyond

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    Into Death and Beyond is a gripping first-person survival horror game set on the hostile planet XB32-ENT. As bounty hunter Mark Helkins, scavenge for resources, solve puzzles, and confront terrifying mutants. Unravel dark secrets and capture a rogue alien before it hunts you down. Will you survive?

    2025ActionIndieAdventure9.99 USDSingle-playerSimilar games →
  5. 5
    The Unknown Fear — Steam game cover

    The Unknown Fear

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    The Unknown Fear is about a prisoner, sentenced to death, that had his memory deleted. His only chance of changing his life is by retrieving a file on the main computer of a secret settlement. Will you be able to get a new life or will the imprisoned creature in the settlement devour your body?

    2024ActionIndieAdventure2.99 USDSingle-playerSimilar games →
  6. 6
    Remothered: Tormented Fathers — Steam game cover

    Remothered: Tormented Fathers

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    Remothered: Tormented Fathers is the pure and realistic survival horror videogame

    2018ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Welcome to Hanwell — Steam game cover

    Welcome to Hanwell

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    Open world horror set in a city in which your worst nightmares have become an everyday part of life. Explore a dense open world of terror, every building a unique location with it's own story to tell. Strung together by the remenants of Hanwell.

    2017ActionIndieAdventureFreeDeck PlayableSingle-playerSimilar games →
  8. 8
    Outlast 2 — Steam game cover

    Outlast 2

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    Outlast 2 introduces you to Sullivan Knoth and his followers, who left our wicked world behind to give birth to Temple Gate, a town, deep in the wilderness and hidden from civilization. Knoth and his flock are preparing for the tribulations of the end of times and you’re right in the thick of it.

    2017ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Outlast — Steam game cover

    Outlast

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Action and Indie with Roots of Insanity.

    Hell is an experiment you can't survive in Outlast, a first-person survival horror game developed by veterans of some of the biggest game franchises in history. As investigative journalist Miles Upshur, explore Mount Massive Asylum and try to survive long enough to discover its terrible secret... if you dare.

    2013ActionIndieAdventure14.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    A Way To Be Dead — Steam game cover

    A Way To Be Dead

    Single-player alternative to Roots of Insanity — playable solo, no multiplayer required. Shares Indie and Adventure with Roots of Insanity.

    A Way to be Dead is an asymmetrical multiplayer (up to 5 players) horror game. Players can take on the role of killer, the victims, or even the undeads. Escape | Kill | Eat...

    2021IndieAdventureEarly Access6.99 USDSingle-playerSimilar games →