Single-player games like Astario
Below are 8 single-player Steam games similar to Astario, 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 Astario page.
Ranked picks
- 1
MORS
Single-player alternative to Astario — playable solo, no multiplayer required. Shares Indie and Adventure with Astario.
Build an automated factory on a true-scale Mars streamed from real NASA terrain. Mine, smelt and belt resources, run trains between outposts, master chemistry, and grow from a lone lander into a planet-spanning industry while the real Martian weather does its worst.
- 2
Infinite Space: Mining
Single-player alternative to Astario — playable solo, no multiplayer required. Shares Indie and Simulation with Astario.
Build and automate your own industrial space empire. Mine asteroids, manage logistics, expand production lines with drones and conveyors, explore new sectors through wormholes, and grow your mining operation across the galaxy.
- 3
Industronaut
Single-player alternative to Astario — playable solo, no multiplayer required. Shares Indie and Adventure with Astario.
A survival engineering game where you build life support habitats, mine resources, and automate production chains on a radiation heavy planet. No rescue. No support. Just engineering.
- 4
Starlathe
Single-player alternative to Astario — playable solo, no multiplayer required. Shares Indie and Simulation with Astario.
Command your ship and fleet in a galaxy that truly lives: 150 sectors where six factions mine, haul, trade, build and wage war whether you're there or not. Trade it, rob it, defend it — or forge your own fleet and carve out your place in it.
- 5
Untethered
Single-player alternative to Astario — playable solo, no multiplayer required. Shares Adventure and Simulation with Astario.
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.
- 6
TerraTech Worlds
Single-player alternative to Astario — playable solo, no multiplayer required. Shares Indie and Adventure with Astario.
TerraTech Worlds is an open world, build-craft adventure game, set on an uncharted alien world. Play solo or with friends, explore your surroundings, craft unique vehicles, construct automated bases, and battle your way through hazards and enemies to harness the power of your environment
- 7
SpaceCraft
Single-player alternative to Astario — playable solo, no multiplayer required. Shares Indie and Adventure with Astario.
The Universe is yours. SpaceCraft is an online space exploration and building game. Explore a vast galaxy of solar systems and planets, mine and craft resources, design and build ships, automate planetary bases and interplanetary logistics, trade and cooperate.
- 8
Interstellar Rift
Single-player alternative to Astario — playable solo, no multiplayer required. Shares Indie and Simulation with Astario.
Interstellar Rift is an open world starship simulator with an emphasis on ship construction and multi-player interaction. Survive in a hostile galaxy with your own custom designed and constructed starship. Invite other players to join your crew or fight them across the galaxy!