
Lead an expedition into an unexplored solar system. Build rockets, aircraft, and other vehicles, discover new worlds, gather resources, complete missions, unlock technology, and grow a colony of tiny purple Klorps in this spaceflight sandbox.
60+ similar titles based on shared tags and player behavior. Themes include Simulation, Space, Space Sim, Physics.

Lead an expedition into an unexplored solar system. Build rockets, aircraft, and other vehicles, discover new worlds, gather resources, complete missions, unlock technology, and grow a colony of tiny purple Klorps in this spaceflight sandbox.

AESOS
Lead a spaceyard: juggle contracts, design, prototype, and build all types of ships—from single-seat fighters to giant cruisers. Create custom vessels to meet precise client specs, then take the helm yourself to prove their worth.

A Hole In Space
A "small" universe simulation, where you play as a black hole and try to absorb the whole universe. You decide the size and shape of the universe. Could also be used as a less meaningful CPU benchmark.
Lead a spaceyard: juggle contracts, design, prototype, and build all types of ships—from single-seat fighters to giant cruisers. Create custom vessels to meet precise client specs, then take the helm yourself to prove their worth.
Why similar: Space Sim 28.5%, Space 18.3%, Simulation 13.8%, Physics 9.9%, Sandbox 9.8%
A "small" universe simulation, where you play as a black hole and try to absorb the whole universe. You decide the size and shape of the universe. Could also be used as a less meaningful CPU benchmark.
Why similar: Space Sim 40.9%, Space 20%, Simulation 17.6%, Sandbox 8.6%, Physics 8.4%
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.
Why similar: Space Sim 36.3%, Simulation 20.2%, Sandbox 17.1%, Physics 14.2%, Space 12.3%
Simulate the physics of the Universe on a large scale and create stunning visuals. Play with intergalactic interactions, smash planets together and even create the Big Bang itself!
Why similar: Space Sim 28.9%, Simulation 20.8%, Space 19.5%, Sandbox 16.2%, Physics 11.9%
Create, Collect, and Crash in Autocraft, a physics destruction sandbox. Create your own cars, rockets, tanks, planes, boats, and more.
Why similar: Sandbox 20.7%, Space 16.7%, Simulation 16.3%, Space Sim 13.6%, Physics 13%
Perihelion lets you run your own rocket engine shop. Take over an abandoned desert airfield, design realistic, unique engines, then test them!
Why similar: Space Sim 32.6%, Simulation 18.7%, Sandbox 18.1%, Space 9.9%, Building 6.8%
A casual space simulation game where you perform orbital manoeuvres on satellites to change their orbit and complete missions.
Why similar: Space Sim 38.5%, Simulation 24.3%, Space 17.8%, Physics 15%, Sci-fi 3.9%
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
Why similar: Space Sim 33.7%, Space 18.2%, Sandbox 15.3%, Simulation 10.7%, Crafting 5.2%
A simulation sci-fi game where players take on the role of the project manager of a space elevator project. They will progressively achieve project phase goals and ultimately accomplish the ultimate goal of constructing a Mars colonization spacecraft.
Why similar: Space Sim 37.2%, Simulation 22.7%, Space 14.2%, Building 7.7%, Physics 6.3%
Take to the stars and explore the solar system. Master the orbital mechanics of N-body physics. Plot a careful course to complete your mission.
Why similar: Space Sim 40.9%, Simulation 23.5%, Space 19.3%, Physics 13.5%, 3D 2.3%
Tiny Space Academy is a 2D space sim where you can grow your own space agency and explore our solar system with rockets you design! Learn basic orbital mechanics, run science experiments, and get your astronauts back to Earth safely.
Why similar: Space Sim 30.1%, Space 20.2%, Simulation 13.6%, Physics 12.3%, Building 9.4%
After a mysterious accident you are left are stranded, floating through space on a piece of a space station. Craft supplies and Hubs to expand what is now your home. But be warned space is a dangerous places where one mistake can mean certain death. Can you defy the odds and survive in space?
Why similar: Space Sim 31.5%, Sandbox 13.8%, Simulation 12.2%, Space 10.1%, Building 8.2%
Caught in the middle of a violent conflict on the fringe of the galaxy — your ability to survive will depend on your piloting skills and combat savvy as a mercenary space fighter. But, as you explore the vastly detailed world of Tachyon: The Fringe, you will often find that the most powerful weapon on your ship is in your head.
Why similar: Space Sim 48%, Simulation 29.2%, Space 22.9%
Real-time planetary collision sandbox powered by SPH physics: smash planets together and watch the destruction and its aftermath!
Why similar: Space Sim 39.9%, Space 19.5%, Sandbox 12.9%, Simulation 12.9%, Physics 11.6%
A 2D space agency simulator where every object follows the same orbital physics. Land on moons, build colonies, deploy satellites, and reshape entire planetary systems. Deorbit a moon if you want.
Why similar: Space Sim 23.9%, Space 20.8%, Simulation 20%, Physics 11.7%, Sandbox 10.9%
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.
Why similar: Space Sim 36.7%, Simulation 32.7%, Space 30.6%
Spaceflight add-on for Microsoft Flight Simulator X
Why similar: Space Sim 38.9%, Simulation 35.8%, Space 25.3%
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.
Why similar: Space Sim 26.3%, Space 24.3%, Sandbox 14.4%, Simulation 12.8%, Physics 11%
Space Sim Tycoon – A sandbox transportation tycoon game where you can explore forbidden planets, gather resources, craft goods, and establish routes to manage your space empire.
Why similar: Space Sim 33.1%, Simulation 20.4%, Sandbox 15.3%, Space 12.1%, Building 8.5%
Our goal is to depict the possibilities of space exploration & combat within a realistic environment- to emphasize the "science" in science-fiction. Key features to include: proper orbital mechanics for all objects in space, detailed ship system control, functionality, inter-dependency & damage reaction.
Why similar: Space Sim 55.9%, Simulation 27%, Space 17.1%
Dive into a hardcore space station simulation and overcome the unforgiving environment of space. You must build and manage your station under the pressures of life, economics, and thermodynamics. Rise to power through economic leverage or ruthless military might.
Why similar: Space Sim 33.5%, Sandbox 16.1%, Simulation 15.5%, Colony Sim 7.3%, Space 7.1%
In the distant future, the X universe faces a period of profound and irrevocable change. While the universe stumbles towards an uncertain future, countless adventures await as new enemies rise in search of power.
Why similar: Space 35%, Space Sim 24.9%, Simulation 22.2%, Sandbox 10.1%, Sci-fi 6.3%
Become a pioneer of spaceflight. As an engineer in the Soviet Space Program you will be responsible for repairing, fixing and building the iconic spacecraft and rockets from the R-7 family.
Why similar: Space Sim 26%, Simulation 19%, Space 16.1%, Sandbox 11.2%, Physics 10%
Build rockets and shoot them into space. Once you reach orbit, you are halfway to explore anywhere in the Solar System.
Why similar: Space Sim 37.9%, Space 26.4%, Simulation 19.3%, Physics 7.5%, Exploration 6.5%
X-Tension is the eagerly awaited expansion pack to X: Beyond the Frontier. The expansion is not limited by a linear plot line but makes use of new ways to expand your empire. You can now take part in missions that are offered to you throughout the game.
Why similar: Space Sim 33.7%, Space 24.7%, Simulation 24.1%, Sandbox 11.4%, Sci-fi 5.5%
Ensure the moon is safe for humanity’s lunar settlement! Explore the moon as a Lunar Rover and interact with crashed ships, natural resources, and the nearby landmarks to determine if humans can live here!
Why similar: Space Sim 35%, Sandbox 12.1%, Simulation 11.9%, Physics 11.7%, Space 9%
Mine asteroids, salvage space debris, design your own small or massive spacecraft using individual functional components, complete missions, and engage in battles against enemies in a vast galaxy with realistic physics based on orbital mechanics or in a classic physics mode.
Why similar: Space 31.9%, Space Sim 21.7%, Simulation 18.9%, Sandbox 15.7%, Building 7.4%
You are a Scraponaut, create your own spaceplane with unique parts each affecting the way your plane behaves. Collect scrap while exploring procedurally generated islands, unlock and discover unique new parts to upgrade your spaceplane.
Why similar: Space Sim 33.8%, Space 17.5%, Sandbox 13.9%, Simulation 12.5%, Building 10%
Physics sandbox game that uses a graphics card as a supercomputer. Change the laws of physics, design mechanisms, create A-Life worlds and inhabit them with living beings, experiment with evolution and AI.
Why similar: Space Sim 25%, Simulation 19.6%, Sandbox 18.6%, Physics 15.1%, Space 13.9%
Kinetic Void is a 3D space adventure with a focus on customization and enjoyable space simulation. The shipyard allows players to construct their ship piece by piece. Ships can be as simplistic as a cockpit, a hull, a engine and a gun, or as complex as a player wants.
Why similar: Space 38.5%, Simulation 19.1%, Sandbox 15.8%, Space Sim 14.6%, Building 6.2%
This simulation software brings the solar system to your fingertips, allowing you to explore the orbits of planets and witness the fascinating effects of introducing new cosmic objects like asteroids, extra suns, or even a black hole.
Why similar: Space Sim 42.8%, Simulation 24.6%, Space 14.7%, Physics 8.6%, Exploration 5.7%
A futuristic sci-fi persistent universe exploration game with one million stars and 18 million planets and moons. Fly your ship to any star and explore its solar system. Claiming stars, planets and moons will make them yours forever - other players will see your discoveries and you will see theirs.
Why similar: Space Sim 44.7%, Simulation 24.8%, Space 13.3%, Exploration 6.6%, Sci-fi 4%
Astrox Imperium is a relaxing space game where you fly around a generated universe. Mining, Fighting, Building, Exploring, and Surviving. What makes this game unique? You have complete control of how it plays. A robust sandbox and lots of MOD tools. Make it your game, and play it your own way.
Why similar: Space Sim 33.2%, Space 31.8%, Simulation 15.4%, Sandbox 13.8%, Sci-fi 3.2%
Will you make the grade and save the planet? Become a cadet on your first day of training in this 3rd person space combat simulator.
Why similar: Simulation 37%, Space Sim 35.7%, Space 21.8%, Sci-fi 5.5%
Build and upgrade your personal ship to travel around a strange planet.
Why similar: Space Sim 37%, Simulation 20.1%, Space 18.8%, Physics 9.3%, Crafting 7.9%
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
Why similar: Space Sim 46.1%, Simulation 27.1%, Space 19.4%, Exploration 6.7%, Singleplayer 0.6%
Mine resources, build your spaceship, and soar through the skies in this immersive space sandbox. Wire complex machinery to survive the elements, and craft the StellarDrive: a powerful engine that lets you travel faster than light.
Why similar: Space Sim 22.9%, Space 22%, Sandbox 15.2%, Simulation 12%, Building 10.7%
Start as an asteroid, grow by absorbing other celestial bodies to become a planet, a star, and ultimately a black hole. Experience realistic gravity and orbital physics in an ever-evolving sandbox universe.
Why similar: Space Sim 29.9%, Space 20.7%, Sandbox 13.3%, Simulation 12.3%, Physics 12.1%
Mine and craft your way to orbit, build your own starship and explore a vast, dangerous galaxy alongside your crew. For players who love a meaningful survival progression, a unique and elegant building system, and epic space-opera scale.
Why similar: Space 24.3%, Space Sim 21.4%, Simulation 16%, Sandbox 15.4%, Building 14.3%
We have built a mini universe with real physics basis, simulation and imagination. The game uses realistic environments and models to tell a story of a mini universe.
Why similar: Space Sim 40.2%, Space 20.6%, Sandbox 14.4%, Simulation 11.7%, Sci-fi 5.5%
Explore a precisely recreated lunar surface built from real data and a JAXA-backed simulation.
Why similar: Space Sim 46.2%, Simulation 24.6%, Space 21.4%, Exploration 7%, Singleplayer 0.7%
Gravitation is a sandbox simulation set in the vastness of the cosmos and built on the laws of real-world physics.
Why similar: Space Sim 38%, Simulation 22.6%, Sandbox 15%, Space 12.3%, Physics 7.6%
Explore the pixel cosmos, jumping from star system to star system. Land on fully procedural planets, and make them your home.
Why similar: Space Sim 27.8%, Space 17.8%, Sandbox 15.4%, Building 11.4%, Crafting 10.5%
Navigate through a detailed simulation of the solar system, where you can explore planets, moons, and other celestial bodies up close. Access detailed information, images, interactive content, quizzes and even mini-games where you can try to land a space probe.
Why similar: Space Sim 44.6%, Simulation 25.7%, Space 12.7%, Physics 9.8%, Exploration 6.5%
Deep Claims is a space exploration game where you upgrade your ship and equipment in order to mine increasingly valuable and hazardous asteroids. Can you make it to the core?
Why similar: Space Sim 28.3%, Space 18.9%, Sandbox 17.1%, Simulation 13.7%, Crafting 11.5%
Build rockets and fly them around the Solar System in this realistic aerospace sandbox. Attempt landings, build space stations, drive rovers, perform spacewalks, explore alien worlds, and get your crew home safe.
Why similar: Space Sim 35.9%, Space 14.3%, Sandbox 14.3%, Simulation 12.8%, Physics 7.6%
The hit mobile game Interstellar Pilot 2 has come to Steam. Join the TEF forces heading to the Gatopean sector to find a new home for mankind. Play how you like in this open world space-sim developed by Pixelfactor.
Why similar: Space Sim 37.4%, Simulation 22.1%, Sandbox 17.8%, Space 15.9%, Sci-fi 3.9%
Master spaceflight and progress through realistic orbital mechanics challenges of increasing complexity. Plot maneuvers to coordinate transfer orbits, gravity assists, and high-stakes rendezvous.
Why similar: Space Sim 27%, Space 24.5%, Simulation 24.2%, Physics 14.7%, Sandbox 9%
Equipped with cutting-edge salvaging tech, carve & slice spaceships to recover valuable materials. Upgrade your gear to take on more lucrative contracts and pay your billion credits debt to LYNX Corp!
Why similar: Space 25.1%, Space Sim 22.2%, Simulation 14%, Physics 13.6%, Sandbox 13.2%
X3: Reunion continues the epic space saga, blending deep space trading and intense real-time combat. Explore a vast universe, establish your empire, and shape the new frontier. With enhanced graphics and intricate economies, it's a journey of strategy, simulation, and interstellar intrigue.
Why similar: Space Sim 34%, Space 31.5%, Simulation 14.9%, Sandbox 13.1%, Sci-fi 4.9%
In the midst of a seemingly hopeless war among the stars, take control of highly customizable spacefighters to experience classic space combat action throughout a story-driven campaign.
Why similar: Space Sim 51.1%, Space 25.1%, Simulation 13.8%, Sci-fi 6.4%, Atmospheric 2.7%
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.
Why similar: Space 32.2%, Space Sim 31.5%, Simulation 19.8%, Sandbox 11.7%, Sci-fi 4.8%
A hard sci-fi survival sim where each decision costs power. Every system drains your dying reactor. Pilot a crippled spacecraft across a real-scale solar system using true orbital mechanics, manage critical systems, and fight to reach Earth — where space itself is the only enemy you need.
Why similar: Space Sim 24.6%, Space 23%, Simulation 22.8%, Sandbox 11.3%, Physics 7.6%
Trade your wares and eliminate the competition in a cutthroat world. Buy new ships and stations to mine and haul resources. Explore the vast emptiness of space.
Why similar: Space Sim 50.4%, Space 27.3%, Simulation 17.4%, Exploration 4.9%
Spacebourne is an open space exploration game with Rpg elements. Its world consists of different factions at war. You as an expert pilot need to choose your side or be on no one's side and create a force of your own. Load up your weapons, Ready your ship and warp to adventure.
Why similar: Space Sim 36.9%, Space 34.9%, Simulation 23.6%, Exploration 4.7%
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.
Why similar: Space Sim 27.4%, Space 19.9%, Sandbox 13.9%, Simulation 11.4%, Physics 11.3%
Triton Survival is an open world survival game about exploration, construction, engineering, and fighting on planets. Embark on this interstellar adventure and conquer the galaxy. Are you ready?
Why similar: Space Sim 28.3%, Space 17.4%, Sandbox 14.3%, Building 10.7%, Crafting 9.9%
A 2D space trading game with a real economy. NPC ships haul cargo between 78 stations and prices move whether you're there or not. Good routes die as other traders catch on, so you keep hunting new ones. No quest markers, no "best trade" arrows. Just you, a map, and the prices.
Why similar: Space Sim 38.8%, Simulation 21.6%, Sandbox 17.7%, Space 10.6%, Exploration 5.7%
It is the year 2938. The long wished-for encounter of the X Universe and the Earth holds both joy and sorrow for the people. Despite flourishing trade, the clash of the diverse races, cultures and life forms creates new tensions, mistrust and open conflict that need to be overcome!
Why similar: Space 35.9%, Space Sim 27.5%, Simulation 15.9%, Sandbox 14.1%, Sci-fi 4.7%