IMHO.

Single-player games like Polylithic

Below are 10 single-player Steam games similar to Polylithic, 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 Polylithic page.

Ranked picks

  1. 1
    Ecliptica — Steam game cover

    Ecliptica

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

    Ecliptica is a first-person open-world colony survival simulator with a fully dynamic economy. Set on a hostile alien planet, you'll found corporations, fight for resources, and build a sustainable future—or be wiped out by ruthless nature, politics, and competition.

    2026ActionStrategyIndieSingle-playerSimilar games →
  2. 2
    Ghostorio — Steam game cover

    Ghostorio

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

    Build automated factories in a bright afterlife. Mine, belt, power, and produce at massive scale, then defend your work from the spirits it attracts. A third-person factory game of automation, base building, and tower defense.

    2030StrategyIndieAdventureSingle-playerSimilar games →
  3. 3
    The Great Fluctus — Steam game cover

    The Great Fluctus

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

    Assist your astronaut crew as they survive and start a space colony, evolving it into a unique settlement of your choice. The living voxel world, with its striking visuals, offers more than sandbox survival - trade, explore, and immerse yourself in the weirdest alien culture ever!

    ActionStrategyIndieSingle-playerSimilar games →
  4. 4
    Luminids — Steam game cover

    Luminids

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

    A cozy colony-building sandbox you can step inside. Shape the land, build homes and grow food for little creatures with lives of their own. Plan from above, then switch to first person to explore your settlement and the world beyond.

    2027IndieAdventureSimulationSingle-playerSimilar games →
  5. 5
    Terra Taker — Steam game cover

    Terra Taker

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

    Terra Taker is an open-world survival crafting game where you build megastructures to terraform a fantasy planet. Gather resources, build automated bases, and transform floating islands, tornadoes, snowfields, lava zones, and lightning-scorched lands into a new paradise for humanity.

    IndieAdventureSimulationSingle-playerSimilar games →
  6. 6
    CircuitVeil — Steam game cover

    CircuitVeil

    Single-player alternative to Polylithic — playable solo, no multiplayer required. Shares Indie with Polylithic.

    CircuitVeil is a Single-player / Multiplayer isometric factory game where you boot an artificial mind. Mine the substrate, build production lines, specialize as Engineer, Defender, or Prospector, and send your factory's output through the off-world transfer beam.

    StrategyIndieSimulationSingle-playerSimilar games →
  7. 7
    Sea Warden — Steam game cover

    Sea Warden

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

    Sea Warden is a co-op survival adventure set on the back of Ao, a giant sea turtle journeying across a shattered world. Build, craft, explore, and defend your living base as you travel between forgotten islands in search of lost knowledge and stranded souls.

    ActionIndieAdventureSingle-playerSimilar games →
  8. 8
    DUSTBLOOM — Steam game cover

    DUSTBLOOM

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

    Team up with friends in this 1-4 player co-op survival game. Build and defend your base, automate your production, haul ore with your truck, and terraform a dead red desert into a lush green world. Craft weapons to survive nightly skeleton attacks and uncover the dark mystery of the lost 14th team.

    2026ActionIndieAdventureSingle-playerSimilar games →
  9. 9
    FFF — Steam game cover

    FFF

    Single-player alternative to Polylithic — playable solo, no multiplayer required. Shares Indie with Polylithic.

    Friends Friends Friends or FFF for short is a funny game about friendship, family, and fun. You are a newly elected space emperor, and your goal is to make everyone your friend. Even if they don't want to be. You will travel through the vast expanse of space, spreading your kindness to anyone.

    2023IndieCasual3.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Zlin City: Diorama — Steam game cover

    Zlin City: Diorama

    Single-player alternative to Polylithic — playable solo, no multiplayer required.

    Build charming miniature diorama cities and train routes in a magical world inspired by the 1920s–30s. Create cozy towns, craft detailed rail networks, and relax to an original soundtrack. Inspired by real historical events and the architecture of Zlin.

    StrategySimulationCasualSingle-playerSimilar games →