Single-player games like Keplerian Space Discovery
Below are 8 single-player Steam games similar to Keplerian Space Discovery, 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 Keplerian Space Discovery page.
Ranked picks
- 1
Rocket Science
Single-player alternative to Keplerian Space Discovery — playable solo, no multiplayer required. Shares Simulation and Early Access with Keplerian Space Discovery.
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.
- 2
SpaceEngine
Single-player alternative to Keplerian Space Discovery — playable solo, no multiplayer required. Shares Simulation and Early Access with Keplerian Space Discovery.
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
- 3
Archean
Single-player alternative to Keplerian Space Discovery — playable solo, no multiplayer required. Shares Simulation and Early Access with Keplerian Space Discovery.
Gather resources, craft components, build vehicles, and code their logic in a physics-driven engineering sandbox and full scale space sim.
- 4
Kerbal Space Program 2
Single-player alternative to Keplerian Space Discovery — playable solo, no multiplayer required. Shares Simulation and Early Access with Keplerian Space Discovery.
Kerbal Space Program 2 is the sequel to the acclaimed space-flight simulation game Kerbal Space Program. Enter the next generation of space adventure with exciting new parts, stunning visuals, fully revamped UI and Map View, and rich new environments to explore.
- 5
Solar Expanse - Space Exploration Manager
Single-player alternative to Keplerian Space Discovery — playable solo, no multiplayer required. Shares Simulation and Early Access with Keplerian Space Discovery.
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.
- 6
Reentry - A Space Flight Simulator
Single-player alternative to Keplerian Space Discovery — playable solo, no multiplayer required. Shares Simulation with Keplerian Space Discovery.
Do you have what it takes to become an astronaut? Reentry is a realistic space flight simulator inspired by the early NASA space programs, from orbiting Earth in Mercury and Gemini, to the moon landing in project Apollo. Learn the procedures. Operate the spacecraft. Complete the mission.
- 7
Spaceflight Simulator
Single-player alternative to Keplerian Space Discovery — playable solo, no multiplayer required. Shares Simulation and Early Access with Keplerian Space Discovery.
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
- 8
Black Hole Simulator
Single-player alternative to Keplerian Space Discovery — playable solo, no multiplayer required. Shares Simulation with Keplerian Space Discovery.
A simple black hole simulator.