Single-player games like The Spatials: Galactology
Below are 17 single-player Steam games similar to The Spatials: Galactology, 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 The Spatials: Galactology page.
Ranked picks
- 1

The Spatials
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Indie and Simulation with The Spatials: Galactology.
It's the year 5781 -- and you have been chosen to build and lead a space station in a wild corner of the galaxy! Attract visitors and explore hundreds of planets to fund your station.
- 2

Space Colony: Steam Edition
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Simulation with The Spatials: Galactology.
Space Colony: Steam Edition is a remaster of the real-time base builder and strategy game from Firefly Studios, creators of the Stronghold series. In Space Colony you colonize to survive, designing intergalactic bases that keep your crew productive, happy and defended against hostile alien threats.
- 3

Planetbase
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.
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.
- 4

Space Haven
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.
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.
- 5

Surviving Mars
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Simulation with The Spatials: Galactology.
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.
- 6

Startopia
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Simulation with The Spatials: Galactology.
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...
- 7

Meeple Station
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.
Build your way to success! Trade your way to the top! Explore your way to infamy! Do it all your way!
- 8

Solargene
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.
Take Command of a Space Corporation in the Sci-Fi Simulator Solargene! Manage personnel, design and develop colonies and orbital stations across the solar system! Mine resources, establish logistics, research cutting-edge technologies, trade, and complete missions
- 9

Mercury Fallen
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.
A sci-fi colony management sim with a focus on exploration, expansion, and survival. Rebuild your underground facility, manage colonists and robots, and uncover the mysteries of an alien world light-years from Earth. Dig deep, expand across the surface, and shape your new home.
- 10

Maia
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.
Maia is a colony building game set in the not-so-distant future. Your colonists make planetfall on a hostile world and you must ensure their survival and their safety, constructing their off-world habitat from almost nothing and sheltering them from a dangerous, often deadly environment.
- 11

Oxygen Not Included
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Indie and Simulation with The Spatials: Galactology.
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.
- 12

Spacebase DF-9
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.
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.
- 13

The Sims™ 4
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Simulation with The Spatials: Galactology.
Play with life and discover the possibilities. Unleash your imagination and create a world of Sims that’s wholly unique. Explore and customize every detail from Sims to homes–and much more.
- 14

Evil Genius
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy with The Spatials: Galactology.
Everybody wants to rule the world! Achieve global power with EVIL GENIUS, the one and only complete world domination simulator. All the everyday tasks of the deliciously wicked mastermind are available to experience and master from building your ultra-secret base to developing spectacular super-weapons to carry out your nefarious master...
- 15

The Sims™ Legacy Collection
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Simulation with The Spatials: Galactology.
The original game you know and love. For Windows 10/11. Create a neighborhood of Sims and guide their lives through careers and romance. Or create chaos with open-ended gameplay that lets you shape their destinies.
- 16

RimWorld
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Strategy and Indie with The Spatials: Galactology.
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.
- 17

NIMBY Rails
Single-player alternative to The Spatials: Galactology — playable solo, no multiplayer required. Shares Simulation with The Spatials: Galactology.
Design and run your own railroads for the real world. Solve global transportation dilemmas. Unleash your inner railway engineer and transit policy manager.