Single-player games like Spaceflight Simulator
Below are 8 single-player Steam games similar to Spaceflight Simulator, 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 Spaceflight Simulator page.
Ranked picks
- 1
Kerbal Space Program
Single-player alternative to Spaceflight Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Spaceflight Simulator.
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.
- 2
SpaceEngine
Single-player alternative to Spaceflight Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Spaceflight Simulator.
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
- 3
Juno: New Origins
Single-player alternative to Spaceflight Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Spaceflight Simulator.
Bring to life anything you can imagine from rockets and airplanes to cars and more. Automate them with a visual programming language. Explore 3D planets and make your own. Share your creations online. Complete contracts, conquer milestones, and unlock technology in the newly added Career Mode.
- 4
Solar Expanse - Space Exploration Manager
Single-player alternative to Spaceflight Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Spaceflight Simulator.
Explore the Solar System. Mine and drop asteroids. Colonize and terraform. Lead the space race and compete with other corporations on your way to profit. Watch the expansion of human race over the centuries.
- 5
Rocket Science
Single-player alternative to Spaceflight Simulator — playable solo, no multiplayer required. Shares Simulation and Early Access with Spaceflight Simulator.
Take part in a space program. Design spacecrafts and send them off to explore the vast expanses of space. Experience the real scale of the Solar system and the size of its celestial bodies.
- 6
Aviassembly
Single-player alternative to Spaceflight Simulator — playable solo, no multiplayer required. Shares Simulation and Early Access with Spaceflight Simulator.
Build and fly your own airplane! Complete missions to earn money, upgrade your plane, and discover new locations in an open world.
- 7
SimpleRockets
Single-player alternative to Spaceflight Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Spaceflight Simulator.
I am excited to release my first game on Steam! SimpleRockets was released in 2013 for mobile and I've put a ton of work into it to get it ready for PC and Mac. It was inspired by KSP, and it offers a simpler 2D experience for building rockets and exploring space with realistic orbital mechanics.
- 8
Evochron Mercenary
Single-player alternative to Spaceflight Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Spaceflight Simulator.
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.