IMHO.

Single-player games like Orders of Magnitude

Below are 9 single-player Steam games similar to Orders of Magnitude, 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 Orders of Magnitude page.

Ranked picks

  1. 1
    Astro VR — Steam game cover

    Astro VR

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Indie and Simulation with Orders of Magnitude.

    Freely travel among the stars and planets in this made for VR astronomy simulation. Experience space from some of the smallest solar system bodies to our largest planets. Or leave the solar system to explore strange new worlds orbiting stars so distant it takes light thousands of years to get here.

    2024IndieSimulationCasual4.99 USDSingle-playerSimilar games →
  2. 2
    Lunar Odyssey — Steam game cover

    Lunar Odyssey

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Simulation with Orders of Magnitude.

    Don your xEMU Spacesuit, explore the Orontius Crater, and Lunar Module in an immersive first-person VR experience with out of this world accuracy and interaction. Follow real-life procedures, launch the Apollo-era Lunar Module, play Space Golf, and experience the moon like never before.

    2022SimulationEarly AccessFreeSingle-playerSimilar games →
  3. 3
    OVERVIEW (A Walk Through The Universe) — Steam game cover

    OVERVIEW (A Walk Through The Universe)

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Indie and Simulation with Orders of Magnitude.

    Overview is a mind-changing experience about our position in the Universe. With a narrative and an interactive mode, it features realistic imagery and accurate data to leave you in awe and wonder at the vastness of the Cosmos.

    2018IndieSimulationCasual9.99 USDSingle-playerSimilar games →
  4. 4
    3D Solar System Simulator — Steam game cover

    3D Solar System Simulator

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Simulation with Orders of Magnitude.

    This is a simulation based upon real physics. Its specifically for use with 3D headsets such as the HTC Vive and Oculus quest. It gives you a 3D perspective of how gravity works and interacts on all the bodies in a solar system. You can experiment with creating your own solar system.

    2022Simulation0.99 USDSingle-playerSimilar games →
  5. 5
    SpaceEngine — Steam game cover

    SpaceEngine

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Indie and Simulation with Orders of Magnitude.

    The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.

    2019IndieSimulationCasual20.99 USDSingle-playerSimilar games →
  6. 6
    Kerbal Space Program — Steam game cover

    Kerbal Space Program

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Indie and Simulation with Orders of Magnitude.

    In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.

    2015IndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Take On Mars — Steam game cover

    Take On Mars

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Simulation with Orders of Magnitude.

    Take On Mars places you right in the middle of mankind’s most exciting undertaking. Start out in the seat of a rover operator, finish as the first human to have ever set foot on the Red Planet.

    2017Simulation9.99 USDSingle-playerSimilar games →
  8. 8
    Rover Mechanic Simulator — Steam game cover

    Rover Mechanic Simulator

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Indie and Simulation with Orders of Magnitude.

    As an Engineer - crew member of one of the first Mars colonies - you are responsible for repairing and maintaining Mars Rovers. In this advanced simulator you will learn the internal details of various Mars Rovers and their components.

    2020IndieSimulation11.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Space Atlas: The Solar System — Steam game cover

    Space Atlas: The Solar System

    Single-player alternative to Orders of Magnitude — playable solo, no multiplayer required. Shares Indie and Simulation with Orders of Magnitude.

    Navigate through a detailed simulation of the solar system, where you can explore planets, moons, and other celestial bodies up close. Access detailed information, images, interactive content, quizzes and even mini-games where you can try to land a space probe.

    2024IndieSimulation4.99 USDSingle-playerSimilar games →