Single-player games like StellarHub
Below are 11 single-player Steam games similar to StellarHub, 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 StellarHub page.
Ranked picks
- 1

Oxygen Not Included
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
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.
- 2

Surviving Mars
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
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.
- 3

Spacebase Startopia
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
Spacebase Startopia captivates with its original mixture of economic simulation and empire building strategy paired with classic RTS skirmishes and a good dose of humor.
- 4

Spacebase DF-9
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
In Spacebase DF-9, you'll build a home among the stars for a motley population of humans and aliens as they go about their daily lives. Mine asteroids, discover derelicts, and deal with the tribulations of galactic resettlement in Earth's distant future.
- 5

Dyson Sphere Program
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.
- 6

Planetbase
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.
- 7

Space Haven
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
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.
- 8

The Crust
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
Automate a lunar base as you become the savior of humanity exploring the future on the moon. Mine, craft, research, and trade resources with Earth in this gripping narrative basebuilder.
- 9

Startopia
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
A once thriving network of space stations and planets have been left lifeless, redundant scars of the apocalypse. Into this age of darkness comes light. You will lead the way in rebuilding the network of space stations to a standard accepted by the individual alien races, attracting them to harness their expertise and research new...
- 10

RimWorld
Single-player alternative to StellarHub — playable solo, no multiplayer required. Shares Simulation with StellarHub.
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.
- 11

StarFringe: Adversus
Single-player alternative to StellarHub — playable solo, no multiplayer required.
This is the story about the beginning of the conquest of outer space by earthlings. It began as a global idea of saving mankind from hunger and lack of resources, and ended as a brutal and merciless war in space far from Earth.