Single-player games like Space Simulator
Below are 9 single-player Steam games similar to Space 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 Space Simulator page.
Ranked picks
- 1
SpaceCraft
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation with Space Simulator.
The Universe is yours. SpaceCraft is an online space exploration and building game. Explore a vast galaxy of solar systems and planets, mine and craft resources, design and build ships, automate planetary bases and interplanetary logistics, trade and cooperate.
- 2
Dyson Sphere Program
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation and Early Access with Space Simulator.
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.
- 3
Kerbal Space Program 2
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation and Early Access with Space Simulator.
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.
- 4
Spaceflight Simulator
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation and Early Access with Space Simulator.
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
- 5
SpaceEngine
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation and Early Access with Space Simulator.
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
- 6
Cosmoteer: Starship Architect & Commander
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation and Early Access with Space Simulator.
Design and simulate the starships of your dreams! Command your ship or fleet in epic battles and manage your crew while exploring a dangerous galaxy. Play alone or with friends, test your ships in online PvP, and let your imagination reach for the stars!
- 7
Space Haven
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation with Space Simulator.
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
Kerbal Space Program
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation with Space 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.
- 9
Reentry - A Space Flight Simulator
Single-player alternative to Space Simulator — playable solo, no multiplayer required. Shares Simulation with Space Simulator.
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.