Single-player games like Galaxy Engine
Below are 8 single-player Steam games similar to Galaxy Engine, 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 Galaxy Engine page.
Ranked picks
- 1
Periapsis: Gravity Slingshot
Single-player alternative to Galaxy Engine — playable solo, no multiplayer required. Shares Indie and Simulation with Galaxy Engine.
Lead humanity’s final journey beyond Earth. Launch ships, harness gravity slingshots, and explore distant star systems to make humanity multi-planetary.
- 2
Celestial Golf
Single-player alternative to Galaxy Engine — playable solo, no multiplayer required. Shares Indie with Galaxy Engine.
It’s 2D golf on an astronomical scale. Bite-sized missions will teach you the techniques of real space flight, without having to worry about fuel or crew. Precisely plan orbital trajectories over the moons of Mars, through the rings of Saturn, and boldly go where no golf ball has gone before.
- 3
My Little Cosmos
Single-player alternative to Galaxy Engine — playable solo, no multiplayer required. Shares Indie and Simulation with Galaxy Engine.
My Little Cosmos is a light idle clicker game that runs quietly in the background. Keyboard input and mouse clicks from everyday computer use automatically drive the evolution of a universe, with inventory rewards dropping over time.
- 4
Spaceship Ace Pilot
Single-player alternative to Galaxy Engine — playable solo, no multiplayer required. Shares Indie and Simulation with Galaxy Engine.
Spaceship Ace Pilot is a physics driven space simulation game that will push your skills to the limit. Your goal is to collect all power cells in the level in order to execute a hyper jump to the next level. Do you have what it takes to be the best spaceship pilot in the galaxy?
- 5
Kerbal Space Program
Single-player alternative to Galaxy Engine — playable solo, no multiplayer required. Shares Indie and Simulation with Galaxy Engine.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
- 6
Autocraft
Single-player alternative to Galaxy Engine — playable solo, no multiplayer required. Shares Indie and Simulation with Galaxy Engine.
Create, Collect, and Crash in Autocraft, a physics destruction sandbox. Create your own cars, rockets, tanks, planes, boats, and more.
- 7
Satellite Command
Single-player alternative to Galaxy Engine — playable solo, no multiplayer required. Shares Indie and Simulation with Galaxy Engine.
Satellite Command is a realistic, relaxing astrophysics simulator. Complete contracts with real data, launch and take control of ever more powerful Satellites, research advanced technology and build your Space Agency!
- 8
SpaceEngine
Single-player alternative to Galaxy Engine — playable solo, no multiplayer required. Shares Indie and Simulation with Galaxy Engine.
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.