IMHO.

Single-player games like Astrometica: Prologue

Below are 11 single-player Steam games similar to Astrometica: Prologue, 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 Astrometica: Prologue page.

Ranked picks

  1. 1
    Astrometica — Steam game cover

    Astrometica

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

    Astrometica is a space exploration and base-building survival game. After a catastrophic event, explore vast space, gather resources, build bases, and uncover cosmic mysteries. Use advanced technology, craft tools, and discover new blueprints to survive and thrive in the unknown.

    2024IndieAdventureEarly Access19.99 USDSingle-playerSimilar games →
  2. 2
    Untethered — Steam game cover

    Untethered

    Single-player alternative to Astrometica: Prologue — playable solo, no multiplayer required. Shares Adventure with Astrometica: Prologue.

    Untethered is a space survival-sandbox set in our own cosmic backyard. Explore zero-gravity environments, build and operate realistic space stations, and fight to stay alive in the unforgiving realm of deep space.

    2027AdventureSimulationEarly AccessSingle-playerSimilar games →
  3. 3
    Starvector — Steam game cover

    Starvector

    Single-player alternative to Astrometica: Prologue — playable solo, no multiplayer required. Shares Action and Indie with Astrometica: Prologue.

    Eat a snack while you watch an entire planet burn in your image.

    ActionStrategyIndieSingle-playerSimilar games →
  4. 4
    Blossom: The Seed of Life — Steam game cover

    Blossom: The Seed of Life

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

    Terraform a dead planet back to life in this open world survival crafting game. Explore ruins, gather resources, print machines, drive modular vehicles, grow forests, biomes, and ecosystems. Create life and make it thrive with your own hands.

    2026IndieAdventure13.59 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    StarDune — Steam game cover

    StarDune

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

    Build, Fly, and Survive. StarDune combines tactile, modular construction with seamless space travel. Reshape vibrant voxel planets, automate your outposts, and explore a procedurally generated solar system alone or with friends in a world that’s yours to mold.

    IndieAdventureSingle-playerSimilar games →
  6. 6
    Wreckborn — Steam game cover

    Wreckborn

    Single-player alternative to Astrometica: Prologue — playable solo, no multiplayer required. Shares Action and Indie with Astrometica: Prologue.

    Cleanse the system of pirates, destroy their bases and free the captives. On the asteroids, build a base, mining colonies, explore asteroids and extract resources needed for survival. Develop buildings, build defenses and turn the asteroid into a fortress.

    2025ActionIndieSimulation6.99 USDSingle-playerSimilar games →
  7. 7
    The Maker Way — Steam game cover

    The Maker Way

    Single-player alternative to Astrometica: Prologue — playable solo, no multiplayer required. Shares Adventure with Astrometica: Prologue.

    Build creative machines, rovers, drones or robots. Use them to gather resources, discover new machine parts, source energy, construct bases and battle enemy factions in a physics-based open world.

    2026StrategyAdventureSimulationSingle-playerSimilar games →
  8. 8
    Cosmic Fugue — Steam game cover

    Cosmic Fugue

    Single-player alternative to Astrometica: Prologue — playable solo, no multiplayer required. Shares Adventure with Astrometica: Prologue.

    A space exploration and crafting game set in a fully simulated N-body small scale solar system, where you build space infrastructure to progress and figure out the misteries of the cosmos.

    AdventureSimulationSingle-playerSimilar games →
  9. 9
    Subnautica — Steam game cover

    Subnautica

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

    Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.

    2018IndieAdventure29.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    The Planet Crafter — Steam game cover

    The Planet Crafter

    Single-player alternative to Astrometica: Prologue — playable solo, no multiplayer required. Shares Adventure with Astrometica: Prologue.

    A space survival open world terraforming crafting game, designed for 1 to 10 players. Alter the ecosystem of an inhospitable planet to render it habitable for humanity. Survive, gather resources, and build your base. Then, generate oxygen, warmth, and pressure to create a brand new biosphere.

    2024Adventure23.99 USDDeck VerifiedSingle-playerSimilar games →
  11. 11
    Breathedge — Steam game cover

    Breathedge

    Single-player alternative to Astrometica: Prologue — playable solo, no multiplayer required. Shares Action and Indie with Astrometica: Prologue.

    Survive in outer space! Together with your immortal chicken, discover the truth behind your sudden spaceship crash. Craft tools, pilot vehicles, and even control space stations to survive and explore the wreckage.

    2021ActionIndieAdventure24.99 USDSingle-playerSimilar games →