IMHO.

Single-player games like Inside the Labs

Below are 10 single-player Steam games similar to Inside the Labs, 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 Inside the Labs page.

Ranked picks

  1. 1
    The Backrooms Project — Steam game cover

    The Backrooms Project

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    Scientists made a new discovery about the Backrooms. Noclipping out of bounds in normal reality was a myth for long, but now it can be real! Now they are looking for subjects to test it on civil people. There are already scientists inside, so you have nothing to worry about, they say. Or do you?

    2022ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  2. 2
    Malum — Steam game cover

    Malum

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    Malum is the premier C-list horror game. Run from a motely collection of bizarre demons then summon in some guns to turn the tables on them. Best enjoyed with friends.

    2021ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  3. 3
    Pacify — Steam game cover

    Pacify

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    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
    Krampus is Home — Steam game cover

    Krampus is Home

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    Sebastian is a teenager who is waiting for his parents to come back home on a cold Christmas night. Soon he realizes that there is something evil lurking around. Experience Sebastian 's journey into a surreal world like no other.

    2019ActionStrategyIndie3.29 USDSingle-playerSimilar games →
  5. 5
    NOROI KAGO: the Grudged Domain — Steam game cover

    NOROI KAGO: the Grudged Domain

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    NOROI KAGO: the Grudged Domain is a four-player co-op survival horror game based on "Yokai", supernatural beings from Japanese folklore. Trapped in a cursed domain, you and your companions must work together to endure the curse and find a way to escape, all the while hiding from the roaming yokai.

    2025ActionIndieAdventure9.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    The Experiment — Steam game cover

    The Experiment

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    The tests went wrong. He has been transformed. It is hostile toward others. You have been assigned the task of killing the horrifying creature. Listen closely as it could be around any corner. (Game includes Remastered + Classic versions)

    2024ActionIndieAdventure1.99 USDSingle-playerSimilar games →
  7. 7
    Pyromaniac — Steam game cover

    Pyromaniac

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    Play as Nikolas, a 20-year-old guy who found himself lost in an abandoned city... or so he thought it was at first. Explore the city, defend yourself from monsters, and find answers to what is really going on.

    2026ActionIndieAdventure4.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Don't Shout Together — Steam game cover

    Don't Shout Together

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    If you scream, you and your entire team will die. You need to leave the dangerous forest before the timer runs out by either assembling a car or calling the police. If the set time expires, the entire team will perish. Time progresses when you move. Don't make the team wait for you!

    2024ActionIndieSimulation4.99 USDSingle-playerSimilar games →
  9. 9
    Phasmophobia — Steam game cover

    Phasmophobia

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can.

    2020ActionIndieEarly Access19.99 USDSingle-playerSimilar games →
  10. 10
    Unpossess: Exorcism Simulator — Steam game cover

    Unpossess: Exorcism Simulator

    Single-player alternative to Inside the Labs — playable solo, no multiplayer required. Shares Action and Indie with Inside the Labs.

    Unpossess is a 1-4 co-op exorcism simulator game set in the early 1900s. Players take on the role of exorcists responsible for addressing cases of human possession.

    2025ActionIndieAdventure11.24 USDDeck PlayableSingle-playerSimilar games →