Single-player games like Starship Colony
Below are 8 single-player Steam games similar to Starship Colony, 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 Starship Colony page.
Ranked picks
- 1

Surviving Mars
Single-player alternative to Starship Colony — playable solo, no multiplayer required. Shares Strategy and Simulation with Starship Colony.
There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.
- 2

Space Haven
Single-player alternative to Starship Colony — playable solo, no multiplayer required. Shares Strategy and Indie with Starship Colony.
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
- 3

Stellar Settlers: Space Base Builder
Single-player alternative to Starship Colony — playable solo, no multiplayer required. Shares Strategy and Indie with Starship Colony.
Stellar Settlers is a chill space base/city builder and colony sim game. With unique vertical and horizontal base-building gameplay, settle on 10 hostile alien planets and build your own thriving colony. Get enough materials to build a physics-based Spaceship and try to escape from disasters.
- 4

Aven Colony
Single-player alternative to Starship Colony — playable solo, no multiplayer required. Shares Strategy and Indie with Starship Colony.
Build a new home for humanity in Aven Colony. Discover Aven Prime - an alien planet of deserts, tundras, and wetlands light years from earth. Build your colonies into massive, sprawling cities whilst dealing with the challenges faced when settling on a new world.
- 5

Dwarf Fortress
Single-player alternative to Starship Colony — playable solo, no multiplayer required. Shares Strategy and Indie with Starship Colony.
Build a fortress and try to help your dwarves survive against a deeply generated world. Keep your dwarves happy, grow their community and beware of digging too deeply. The deepest, most intricate simulation of a world that's ever been created.
- 6

Oxygen Not Included
Single-player alternative to Starship Colony — playable solo, no multiplayer required. Shares Indie and Simulation with Starship Colony.
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
- 7

Against the Storm
Single-player alternative to Starship Colony — playable solo, no multiplayer required. Shares Strategy and Simulation with Starship Colony.
A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors.
- 8

RimWorld
Single-player alternative to Starship Colony — playable solo, no multiplayer required. Shares Strategy and Indie with Starship Colony.
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.