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

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.
- 2

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.
- 3

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.
- 4

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.
- 5

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.
- 6

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.
- 7

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.
- 8

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.
- 9

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.
- 10

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.
- 11

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.