IMHO.

Single-player games like The Spatials: Galactology

Below are 17 single-player Steam games similar to The Spatials: Galactology, 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 The Spatials: Galactology page.

Ranked picks

  1. 1
    Space Haven — Steam game cover

    Space Haven

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.

    Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.

    2020StrategyIndieSimulation24.99 USDDeck VerifiedSingle-playerSimilar games →
  2. 2
    Surviving Mars — Steam game cover

    Surviving Mars

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Simulation with The Spatials: Galactology.

    There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.

    2018StrategySimulationSingle-playerSimilar games →
  3. 3
    Space Colony: Steam Edition — Steam game cover

    Space Colony: Steam Edition

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Simulation with The Spatials: Galactology.

    Space Colony: Steam Edition is a remaster of the real-time base builder and strategy game from Firefly Studios, creators of the Stronghold series. In Space Colony you colonize to survive, designing intergalactic bases that keep your crew productive, happy and defended against hostile alien threats.

    2015StrategySimulation14.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Solargene — Steam game cover

    Solargene

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.

    Take Command of a Space Corporation in the Sci-Fi Simulator Solargene! Manage personnel, design and develop colonies and orbital stations across the solar system! Mine resources, establish logistics, research cutting-edge technologies, trade, and complete missions

    2026StrategyIndieSimulation34.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    The Final Earth 2 — Steam game cover

    The Final Earth 2

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.

    The Final Earth 2 is a vertical sci-fi city builder. Earth is unlivable, so you decide to create a space colony. Gather resources, then build and research your way to a better future! Grow your city from an exploration ship to a huge metropolis, full of advanced technology. What will you build?

    2022StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Stellar Settlers: Space Base Builder — Steam game cover

    Stellar Settlers: Space Base Builder

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.

    Stellar Settlers is a chill space base/city builder and colony sim game. With unique vertical and horizontal base-building gameplay, settle on 10 hostile alien planets and build your own thriving colony. Get enough materials to build a physics-based Spaceship and try to escape from disasters.

    2025StrategyIndieSimulation4.79 USDSingle-playerSimilar games →
  7. 7
    Rebuild 3: Gangs of Deadsville — Steam game cover

    Rebuild 3: Gangs of Deadsville

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.

    Rebuild a ruined city in this post-apocalyptic mix of strategy and simulation. Manage survivors, scavenge for food and supplies, deal with rival gangs, illness, interpersonal strife and zombie attacks.

    2015StrategyIndieSimulation14.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    The Spatials — Steam game cover

    The Spatials

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Indie and Simulation with The Spatials: Galactology.

    It's the year 5781 -- and you have been chosen to build and lead a space station in a wild corner of the galaxy! Attract visitors and explore hundreds of planets to fund your station.

    2015IndieSimulationRPG1.49 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Mercury Fallen — Steam game cover

    Mercury Fallen

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.

    A sci-fi colony management sim with a focus on exploration, expansion, and survival. Rebuild your underground facility, manage colonists and robots, and uncover the mysteries of an alien world light-years from Earth. Dig deep, expand across the surface, and shape your new home.

    2023StrategyIndieSimulation24.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Maia — Steam game cover

    Maia

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.

    Maia is a colony building game set in the not-so-distant future. Your colonists make planetfall on a hostile world and you must ensure their survival and their safety, constructing their off-world habitat from almost nothing and sheltering them from a dangerous, often deadly environment.

    2018StrategyIndieSimulation24.99 USDSingle-playerSimilar games →
  11. 11
    Oxygen Not Included — Steam game cover

    Oxygen Not Included

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Indie and Simulation with The Spatials: Galactology.

    Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.

    2019IndieSimulation24.99 USDDeck VerifiedSingle-playerSimilar games →
  12. 12
    Spacebase DF-9 — Steam game cover

    Spacebase DF-9

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.

    In Spacebase DF-9, you'll build a home among the stars for a motley population of humans and aliens as they go about their daily lives. Mine asteroids, discover derelicts, and deal with the tribulations of galactic resettlement in Earth's distant future.

    2014StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    The Sims™ 4 — Steam game cover

    The Sims™ 4

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Simulation with The Spatials: Galactology.

    Play with life and discover the possibilities. Unleash your imagination and create a world of Sims that’s wholly unique. Explore and customize every detail from Sims to homes–and much more.

    2020AdventureSimulationFree To PlayFreeDeck PlayableSingle-playerSimilar games →
  14. 14
    Tiny Civilization — Steam game cover

    Tiny Civilization

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy with The Spatials: Galactology.

    This is a historical simulation game that promotes the development of civilization based on the match-3 Game. You'll need to gather resources, use skills, discover new technology, and lead humanbeing through a 10,000-year journey to the cosmos.

    2022Strategy1.99 USDSingle-playerSimilar games →
  15. 15
    Evil Genius — Steam game cover

    Evil Genius

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy with The Spatials: Galactology.

    Everybody wants to rule the world! Achieve global power with EVIL GENIUS, the one and only complete world domination simulator. All the everyday tasks of the deliciously wicked mastermind are available to experience and master from building your ultra-secret base to developing spectacular super-weapons to carry out your nefarious master...

    2009Strategy9.99 USDSingle-playerSimilar games →
  16. 16
    The Sims™ Legacy Collection — Steam game cover

    The Sims™ Legacy Collection

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Simulation with The Spatials: Galactology.

    The original game you know and love. For Windows 10/11. Create a neighborhood of Sims and guide their lives through careers and romance. Or create chaos with open-ended gameplay that lets you shape their destinies.

    2025SimulationCasual11.99 USDDeck PlayableSingle-playerSimilar games →
  17. 17
    NIMBY Rails — Steam game cover

    NIMBY Rails

    Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Simulation with The Spatials: Galactology.

    Design and run your own railroads for the real world. Solve global transportation dilemmas. Unleash your inner railway engineer and transit policy manager.

    2021SimulationEarly Access15.19 USDDeck PlayableSingle-playerSimilar games →