IMHO.

Single-player games like Black Hole Simulator

Below are 12 single-player Steam games similar to Black Hole Simulator, 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 Black Hole Simulator page.

Ranked picks

  1. 1
    Atom — Steam game cover

    Atom

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.

    A simple hydrogen atom simulator.

    2021IndieSimulationCasual0.49 USDSingle-playerSimilar games →
  2. 2
    I Am a Rock — Steam game cover

    I Am a Rock

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Adventure with Black Hole Simulator.

    A rock's solar system odyssey.

    2022StrategyIndieAdventure0.99 USDSingle-playerSimilar games →
  3. 3
    Flower Challenge — Steam game cover

    Flower Challenge

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Adventure with Black Hole Simulator.

    A flower hunter simulator. Here you can walk around the forest and enjoy the nature, meet different animals and, of course, gather flowers.

    2020ActionIndieAdventure199.99 USDSingle-playerSimilar games →
  4. 4
    Planet Architect — Steam game cover

    Planet Architect

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.

    A planet-building sandbox where you create entire worlds from the ground up. Generate unique planets, shape vast landscapes, and use interconnected simulations inspired by real-world processes to bring your fantasy planet to life.

    IndieSimulationSingle-playerSimilar games →
  5. 5
    Flower Design — Steam game cover

    Flower Design

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.

    A flower arrangement sandbox game. The shapes and colors are freely adjustable and there is a garden where you can build a house and put flowers in.

    2017IndieSimulationCasual0.49 USDSingle-playerSimilar games →
  6. 6
    Astronomy3D: Artemis II — Steam game cover

    Astronomy3D: Artemis II

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Adventure with Black Hole Simulator.

    Explore more than 2,900 carefully selected photos from the Artemis II mission in an interactive 3D space, featuring distant views of Earth, the Moon's far side, ancient craters, earthrise, earthset, and a solar eclipse. Photo credit: NASA / Artemis II crew

    2026IndieAdventureSimulationSingle-playerSimilar games →
  7. 7
    Thrive — Steam game cover

    Thrive

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.

    An evolution simulation game. Take control of your species in the environment and edit your species as a whole. Compete with other evolving species for resources on an alien planet.

    2021IndieSimulationCasual4.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Tree Bonsai — Steam game cover

    Tree Bonsai

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.

    An artistic bonsai tree simulation game that follows the life cycle of a plum tree. You can cut branches, add nutrients, and graft while the seasons pass and your tree grows. You can finally fulfill your dreams of a digital bonsai.

    2019IndieSimulationCasual0.49 USDSingle-playerSimilar games →
  9. 9
    Plankton — Steam game cover

    Plankton

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.

    Minimalist style game : plankton simulation, an electronic pet generated by math codes. Under your care it will slowly grow up and evolve.

    2016IndieSimulationCasual0.49 USDSingle-playerSimilar games →
  10. 10
    Jellyfish — Steam game cover

    Jellyfish

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Adventure with Black Hole Simulator.

    A simulation game about the life story of a jellyfish. In this game, I will present the full life cycle of a jellyfish: from an egg to a hydra and finally, after a not very long journey it becomes an adult jellyfish. A work of interactive art to bring the most beautiful of sea creatures to your screen.

    2017ActionIndieAdventure0.49 USDSingle-playerSimilar games →
  11. 11
    Flower Design Ⅱ — Steam game cover

    Flower Design Ⅱ

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.

    An artistic floral arrangement simulation game, a vase of flowers can track your mood at the moment.

    2020IndieSimulationCasual0.49 USDSingle-playerSimilar games →
  12. 12
    Yin Yang Space — Steam game cover

    Yin Yang Space

    Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.

    A sandbox FPS game, you can build gardens in the most intuitive and simple way and play with robots.

    2024ActionIndieSimulation0.49 USDSingle-playerSimilar games →