Single-player games like Space
Below are 8 single-player Steam games similar to Space, 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 Space page.
Ranked picks
- 1
GreenMars: Expedition 744
Single-player alternative to Space — playable solo, no multiplayer required. Shares Action and Indie with Space.
A sci-fi survival game where you explore a full planet, gather resources, build your base, deploy terraforming machines and drones, and begin turning hostile Martian terrain into the foundation of a new civilisation.
- 2
Lunar Impact
Single-player alternative to Space — playable solo, no multiplayer required. Shares Indie and Adventure with Space.
Go to the Moon to explore its harsh nature and mysterious anomalies. Build your own lunar base, craft equipment, extract valuable resources and make many discoveries. Overcome the challenges of extreme lunar conditions, an oxygen-free atmosphere and much more unknown...
- 3
Blossom: The Seed of Life
Single-player alternative to Space — playable solo, no multiplayer required. Shares Indie and Adventure with Space.
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.
- 4
Autonomica
Single-player alternative to Space — playable solo, no multiplayer required. Shares Indie and Adventure with Space.
A survival automation game set in an alternate 1980s. Build supply chains where farming fuels chemistry and mining drives manufacturing. Rebuild a world fractured by failed time experiments - solo or co-op. Launch time-jump extractions into unstable futures for tech that shouldn't exist yet.
- 5
No Man's Sky
Single-player alternative to Space — playable solo, no multiplayer required. Shares Action and Adventure with Space.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
- 6
Satisfactory
Single-player alternative to Space — playable solo, no multiplayer required. Shares Indie and Adventure with Space.
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
- 7
Whisper of the Swallows
Single-player alternative to Space — playable solo, no multiplayer required. Shares Action and Indie with Space.
Brave a savage, unforgiving procedurally generated world where extreme weather and the nightmares of the dark will hunt you down. Alone or in co-op, survive, build, and explore to turn a cursed hellscape into your sanctuary of light.
- 8
The Planet Crafter
Single-player alternative to Space — playable solo, no multiplayer required. Shares Adventure with Space.
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.