Single-player games like SimpleRockets
Below are 11 single-player Steam games similar to SimpleRockets, 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 SimpleRockets page.
Ranked picks
- 1
Kerbal Space Program
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
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
Spaceflight Simulator
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
- 3
Mars Horizon
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
Lead a major space agency as you guide humanity to Mars in this strategy simulation game. Construct a base, design and build rockets, conduct missions throughout the Solar System, and write your own history of Space exploration. Created with support from the European Space Agency.
- 4
Juno: New Origins
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
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.
- 5
SimplePlanes
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
Build airplanes by snapping parts together, designing wing sections, and attaching engines. At any time, you can strap yourself into the cockpit and see how it flies with realistic physics. If you're not in the mood for building, over 100,000 airplanes are available to download for free.
- 6
Lunar Flight
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
A modern take on the classic arcade game, Lunar Lander, Lunar Flight extends the experience to a fully fictionalized and accessible lunar module simulator
- 7
Universe Sandbox
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
- 8
Rocket Science
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Simulation with SimpleRockets.
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.
- 9
Space Simulator
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Simulation with SimpleRockets.
Realistic simulation of spaceflight in a full sized Solar System, with all the planets and their major moons. using real forces, distances, velocities and time. Chapter 1: The Apollo Days. Incredibly detailed Apollo Program missions starting with Apollo 8 lunar orbit missions.
- 10
SimplePlanes 2
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
SimplePlanes is back! Build planes, cars, or anything else using powerful procedural parts! Explore detailed environments with friends in multiplayer, cause chaos, or download 1,000,000 community crafts for free.
- 11
SimplePlanes VR
Single-player alternative to SimpleRockets — playable solo, no multiplayer required. Shares Indie and Simulation with SimpleRockets.
SimplePlanes VR is a flight sim with an ever-expanding collection of hand-crafted aircraft to download and fly for free. Airplanes, helicopters, cars, boats, and more are available and new crafts are added every day.