IMHO.

Single-player games like Cthulhu: The Cosmic Abyss

Below are 14 single-player Steam games similar to Cthulhu: The Cosmic Abyss, 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 Cthulhu: The Cosmic Abyss page.

Ranked picks

  1. 1
    The Alighieri Circle: Dante's Bloodline — Steam game cover

    The Alighieri Circle: Dante's Bloodline

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    The world knows the Divine Comedy as a poem. For your family, it is a prison. As Gabriele Alighieri, you inherit a duty: reseal the gates of Hell. Burdened by fate, you descend into a psychological nightmare where the only escape is to uncover the dark secrets of your ancestors.

    2026AdventureSingle-playerSimilar games →
  2. 2
    System Says Normal — Steam game cover

    System Says Normal

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    You were hired to watch. Not to ask questions. Night shift. Corporate building. Cameras, reports, anomalies. Your predecessor left no final report. Now you're going to find out why. Please proceed.

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

    Strange Horticulture

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    Strange Horticulture is an occult puzzle game in which you play as the proprietor of a local plant store. Find and identify new plants, pet your cat, speak to a coven, or join a cult. Use your collection of powerful plants to influence the story and unravel Undermere’s dark mysteries.

    2022IndieAdventureSimulation15.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    Strange Antiquities — Steam game cover

    Strange Antiquities

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    Become the custodian of a store dealing in occult antiquities. Explore the quaint and gloomy town of Undermere, where strange goings-on and dark mysteries abound. Find and identify arcane artefacts, use your collection to aid the townsfolk with their unusual problems — and remember to pet your cat!

    2025IndieAdventureSimulation17.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    The Signifier Director's Cut — Steam game cover

    The Signifier Director's Cut

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    This story-driven adventure follows a mystery of death and despair from reality into the surreal realms of objective memories and subjective experiences. Search the mind, solve puzzles, and unravel the dark truth in this psychological thriller.

    2020IndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Saturnalia — Steam game cover

    Saturnalia

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    A Single-Player Survival Horror Adventure: play as a cast of characters exploring an isolated village haunted by an ancient ritual—but beware, its labyrinthine roads will change each time you lose all your characters.

    2023Adventure29.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Call of Cthulhu® — Steam game cover

    Call of Cthulhu®

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    1924. Private Investigator Pierce is sent to look into the tragic death of the Hawkins family. Plunge into a world of creeping madness and cosmic horror. Cryptic clues, shadowy figures, and pure terror bar your way as you fight to retain your sanity and solve an otherworldly mystery.

    2018AdventureRPG19.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Dahlia View — Steam game cover

    Dahlia View

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    A child is missing. The police are failing. And you're a retired detective with a bit too much time on your hands. Time to throw out the rules & do whatever it takes to bring the child home. From the developers of I AM RIPPER, The Occupation & Ether One.

    2021IndieAdventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    The Shore — Steam game cover

    The Shore

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    THE SHORE is a first person story driven game with an atmospheric environment and narrations, You will encounter mysterious creatures and unravel the secrets behind them. Strong elements of horror, struggle to survive an unknown world that will make you question your own sanity.

    2021ActionIndieAdventure11.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    Sherlock Holmes The Awakened — Steam game cover

    Sherlock Holmes The Awakened

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    Experience a nerve-racking Lovecraftian adventure, rebuilt from the ground up with modern graphics and gameplay. Become Sherlock Holmes, and find yourself at the heart of the terrifying Cthulhu Mythos as you investigate a series of mysterious disappearances in Europe and the US.

    2023Adventure39.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    Call of Cthulhu®: Dark Corners of the Earth — Steam game cover

    Call of Cthulhu®: Dark Corners of the Earth

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required.

    Call of Cthulhu: Dark Corners of the Earth is a first-person horror game that combines intense action and adventure elements.

    20094.99 USDSingle-playerSimilar games →
  12. 12
    ROUTINE — Steam game cover

    ROUTINE

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    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 →
  13. 13
    The Council — Steam game cover

    The Council

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    Experience a Narrative Adventure where your choices and character growth truly matter. As a member of a 1793 secret society, live a tale of intrigue and manipulation on the hunt for your missing mother.

    2018AdventureRPGFreeDeck PlayableSingle-playerSimilar games →
  14. 14
    Vampire: The Masquerade – Swansong — Steam game cover

    Vampire: The Masquerade – Swansong

    Single-player alternative to Cthulhu: The Cosmic Abyss — playable solo, no multiplayer required. Shares Adventure with Cthulhu: The Cosmic Abyss.

    Play as 3 vampires, wield their powers wisely, and strike the right balance between your human and animal side in a heart-pounding story in which your choices will decide the fate of Boston.

    2023AdventureRPG4.99 USDDeck PlayableSingle-playerSimilar games →