IMHO.

Single-player games like Sly Apes

Below are 8 single-player Steam games similar to Sly Apes, 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 Sly Apes page.

Ranked picks

  1. 1
    White Noise Online — Steam game cover

    White Noise Online

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

    A fully cooperative horror experience like never before! On White Noise Online, a team of up to 4 investigators has to explore an area looking for clues, while avoiding being devoured by a supernatural creature. Will you be able to uncover the truth behind the mysterious events?

    2014IndieAdventureCasual4.99 USDSingle-playerSimilar games →
  2. 2
    White Noise 2 — Steam game cover

    White Noise 2

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

    Enjoy a 4vs1 asymmetric horror experience like no other. Be a part of the investigator team, or take control of the creature and devour them!

    2017ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  3. 3
    Pacify — Steam game cover

    Pacify

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

    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
    NOROI KAGO: the Grudged Domain — Steam game cover

    NOROI KAGO: the Grudged Domain

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

    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 →
  5. 5
    The Outlast Trials — Steam game cover

    The Outlast Trials

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

    Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same?

    2024ActionIndieAdventure39.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    ROUTINE — Steam game cover

    ROUTINE

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

    ROUTINE is a First Person Sci-Fi Horror set on an abandoned lunar base designed around an 80s vision of the future. Explore and investigate your surroundings as you survive against unknown threats.

    2025ActionIndieAdventure24.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Paranormal Cleanup — Steam game cover

    Paranormal Cleanup

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

    Clock in for the worst cleaning shift of your life: Unclog nasty toilets and scrub ectoplasm in this 1-4 player online co-op survival horror game. Get the job done and don't get caught by the entities hunting you!

    2025ActionIndieAdventure9.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    The Backrooms Project — Steam game cover

    The Backrooms Project

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

    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 →