60+ similar titles based on shared tags and player behavior. Themes include Simulation, Sandbox, Space Sim, Singleplayer.
Perihelion lets you run your own rocket engine shop. Take over an abandoned desert airfield, design realistic, unique engines, then test them!
Space Sim Tycoon
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.
Tidal Expanse
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.
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 29.5%, Sandbox 19.1%, Simulation 17.5%, Building 7.4%, Management 5.8%
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 30%, Sandbox 20.2%, Simulation 13.4%, Management 6.6%, Building 5.6%
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.
Why similar: Space Sim 32.6%, Simulation 18.7%, Sandbox 18.1%, Space 9.9%, Building 6.8%
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 30.1%, Sandbox 18.5%, Simulation 11.2%, Realistic 7.7%, Building 7.6%
Build and manage your own space company. Design missions, launch satellites, and expand your influence across Earth’s orbit.
Why similar: Space Sim 30.1%, Sandbox 19.5%, Simulation 18%, Immersive Sim 12.7%, Management 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 32.5%, Sandbox 15.8%, Immersive Sim 10.8%, Simulation 10.7%, Realistic 8.8%
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 38.6%, Sandbox 25.4%, Simulation 20.6%, Physics 7.3%, Space 6.6%
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 44.4%, Simulation 18.3%, Sandbox 13.1%, Space 11%, Atmospheric 4.5%
A first person building game where every problem is solved with pipes.
Why similar: Space Sim 35.4%, Sandbox 22.7%, Simulation 14.1%, Immersive Sim 11.8%, Building 6.8%
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 31.6%, Sandbox 15.1%, Simulation 14.8%, Space 10.3%, Building 9.1%
Space Travellers is a unique open-world sandbox space simulator set in the year 2343. Travel the galaxy, trade, explore unexplored worlds, fight, build bases and factories, forge alliances and experience new adventures!
Why similar: Space Sim 32.4%, Sandbox 15.8%, Immersive Sim 12.1%, Simulation 10.3%, Space 8.4%
Real-time planetary collision sandbox powered by SPH physics: smash planets together and watch the destruction and its aftermath!
Why similar: Space Sim 40%, Sandbox 18.2%, Simulation 12.5%, Space 9.9%, Immersive Sim 8.2%
Explore a seamless endless universe with an uncountable number of galaxies, stars, planets, and moons. Make friends or enemies with unique alien civilizations. Research upgrades for your vessel with scientific phenomena and alien tech that you've acquired.
Why similar: Space Sim 33.9%, Sandbox 18.8%, Immersive Sim 10.4%, Simulation 9.7%, Crafting 7.1%
Build, launch and manage realistic space missions across our solar system, placing satellites and telescopes in precise orbits. Explore planets, collect valuable scientific data and sell your findings to expand your rising aerospace empire.
Why similar: Space Sim 35.5%, Simulation 13.9%, Management 8.6%, Immersive Sim 8.5%, Realistic 7.6%
Operate the Starship space launch system and learn how to catch a rocket to understand what it takes to colonize Mars in this ever-evolving simulation of SpaceX Starbase Texas.
Why similar: Space Sim 33.3%, Sandbox 20.6%, Immersive Sim 14.1%, Simulation 13.3%, Realistic 7.2%
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 23.2%, Simulation 20.6%, Sandbox 15%, Space 11%, Immersive Sim 9.8%
Create, Collect, and Crash in Autocraft, a physics destruction sandbox. Create your own cars, rockets, tanks, planes, boats, and more.
Why similar: Sandbox 31.4%, Simulation 17%, Space Sim 14.8%, Building 13.6%, Space 9.2%
Construction World is a sandbox game that allows you do dig dirt and pave roads anywhere.
Why similar: Sandbox 29.1%, Simulation 27%, Immersive Sim 20.3%, Building 11.8%, Realistic 11.5%
Theme Park Architect is the future of theme park simulation in the making. Build your dream park one detail at a time with total creative freedom at scales you never dared to try before, and join a growing community of Creatives to share the passion!
Why similar: Sandbox 27.7%, Simulation 15.9%, Realistic 14.4%, Building 13.3%, Immersive Sim 10.2%
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 32.7%, Sandbox 25.7%, Simulation 22.7%, Space 11.2%, Physics 6.5%
SPACE SEX SHOP is an 18+ store simulator where you have to open the first adult store in space 🚀✨. Manage your inventory, study demand among different alien races 👽🤖, develop your station, and step by step turn a small trading module into a galactic empire 👑.
Why similar: Space Sim 38.9%, Sandbox 21.8%, Simulation 20.7%, Space 7.1%, Management 6.3%
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 37.7%, Simulation 21.6%, Sandbox 20.8%, Space 6.2%, Strategy 5.9%
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 26%, Sandbox 18.5%, Simulation 10.4%, Space 9.6%, Realistic 7.6%
Embark on humanity’s greatest journey to the Moon with Lunaris. Take on the role of an astronaut navigating NASA’s Apollo missions, from the roaring launch of Saturn V to stepping on the lunar surface. Experience the triumphs, challenges, and legacy of space exploration in this immersive simulator.
Why similar: Space Sim 38.3%, Simulation 22.9%, Immersive Sim 16.2%, Realistic 7.3%, Space 5.1%
You have been commissioned to collect and research space minerals by destroying asteroids near your space shuttle. With your growing inventory of materials and new knowledge you build additional modules on your shuttle continuously expanding it into a self sustaining space station eco system.
Why similar: Space Sim 29.2%, Sandbox 18.5%, Immersive Sim 13%, Simulation 11%, Building 7.4%
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 36.8%, Sandbox 23.4%, Simulation 11.2%, Space 10.1%, Building 5.1%
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 36.5%, Sandbox 24.3%, Simulation 20.7%, Space 7.9%, Strategy 5.6%
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%, Sandbox 23.8%, Simulation 13.1%, Management 11.4%, Space 9.6%
Welcome to your new career as a gas station attendant in the deepest, darkest corner of space! Serve adorable ships, count your cash, and expand your diesel empire. It's a simple, satisfying job. Just... ignore the whispers in the vents. Everything is fine. Probably.
Why similar: Space Sim 42.7%, Simulation 22.2%, Immersive Sim 18.1%, Space 7.4%, Atmospheric 4.8%
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 45.7%, Simulation 25.3%, Space 10.9%, Physics 7.3%, Strategy 5.6%
Domino Effect is a sandbox simulation for domino toppling. You have infinite dominoes in your hand to build whatever you want.
Why similar: Sandbox 28.8%, Simulation 25.8%, Immersive Sim 18.5%, Building 12.7%, Crafting 8.5%
A bright afternoon, perfect weather. With your parents away, you’re left with a rocket toy you received as a birthday gift. Build your own rocket and launch it high into the sky! Enjoy delicious homemade meals and work part-time jobs to upgrade your rocket. Can your rocket reach outer space?
Why similar: Space Sim 34.2%, Sandbox 16.9%, Immersive Sim 16%, Simulation 9.9%, Crafting 7.8%
Design, craft, and trade robots on the frozen world of Xylaris-9. Serve factions, upgrade your facility, and shape your robotic legacy in Robodeal Simulator.
Why similar: Space Sim 33.2%, Sandbox 21.3%, Simulation 17%, Immersive Sim 11.5%, Realistic 6.3%
MOSS Becoming Human is an AI science game where players develop and deploy AI agents to build a Martian civilization. Customize, evolve, and test AI in various modes, shaping diverse outcomes. Agents can also interact with the real world, including social platforms like X.
Why similar: Space Sim 38.4%, Sandbox 21.6%, Simulation 19.9%, Immersive Sim 11%, Realistic 5.9%
Text Factory: Automation is an offline, text-based factory simulation game. Build production lines, set up transportation between maps, upgrade technologies, craft weapons and armor, and defeat enemies to gather more resources and expand your factory.
Why similar: Sandbox 29.5%, Simulation 27.1%, Immersive Sim 20.6%, Building 9.7%, Crafting 8.9%
Explore a seed-driven galaxy where every ship, planet, and dungeon is generated at runtime. Dogfight pirate wings, land on 20 kinds of worlds, raid surface sites on foot, and build a fleet from salvaged hulls, solo or in Steam co-op. The same seed rebuilds the same galaxy, every time.
Why similar: Space Sim 43.9%, Sandbox 20.7%, Simulation 17.5%, Management 7.3%, Space 5%
🚀 Become a Space Pioneer by building and managing a station of your own on the orbit of distant planets! Focus on design and management or fulfill objectives to progress. 🛰️ Explore, Build and Prosper!
Why similar: Space Sim 24.9%, Sandbox 12.9%, Space 10.4%, Immersive Sim 9.6%, Simulation 8.1%
Gravity and exploration sandbox
Why similar: Space Sim 31.9%, Sandbox 18.3%, Immersive Sim 11.8%, Simulation 10.9%, Space 8.8%
Master the cockpit of highly realistic spacecraft in this Newtonian physics based sim. Take off from surface to space, plot a course between the planets and dock with space stations. Trade commodities or take shipping contracts to buy upgrades and optimize your build - every choice matters.
Why similar: Space Sim 26.9%, Sandbox 23%, Simulation 18.3%, Space 9.8%, Immersive Sim 7.2%
As researcher with great ambitions, and lack of talent, you are sent to a newly discovered planet far away from civilization. In this VR first person survival, you will need to build an outpost and survive the hostile environment. While exploring the planet, unveiling its secrets.
Why similar: Space Sim 24.7%, Sandbox 17.5%, Immersive Sim 13.9%, Building 9%, Simulation 7.8%
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 61.7%, Simulation 28.7%, Space 9.6%
Design, build and control your own space station. Mission command and control is in your hands and only careful planning and vigilant supervision will keep your crew and space station safe.
Why similar: Space Sim 24.1%, Sandbox 16.2%, Simulation 11.7%, Building 9.8%, Space 9.2%
Build and upgrade your personal ship to travel around a strange planet.
Why similar: Space Sim 39%, Simulation 20.4%, Space 10.1%, Realistic 8.9%, Crafting 6.3%
NOW HIRING: Station Manager! Run a totally-legit* space biz in Sector 7-G. Farm alien crops, refuel shady ships, and sell dangerously edible snacks. Perks: gloves, oxygen insurance**, and mild relevance. No exp needed. Apply today! *Legit status not valid in all sectors. **Terms apply.
Why similar: Space Sim 41.3%, Sandbox 19.4%, Simulation 17%, Immersive Sim 9.9%, Management 9.4%
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 39.1%, Sandbox 25%, Simulation 21%, Space 5.4%, Atmospheric 3.7%
Cairn is the most relaxing game you'll ever play.
Why similar: Sandbox 23.3%, Simulation 22.6%, Immersive Sim 14.8%, Realistic 8.1%, Building 7.8%
Build a colony on an alien planet. Supply settlers, defend against meteors, upgrade your base, develop your economy, and fight for survival.
Why similar: Space Sim 35.5%, Simulation 21.5%, Sandbox 19.8%, Space 5.7%, Strategy 5.6%
𝗘𝗥𝗖 𝗥𝗼𝘃𝗲𝗿 𝗠𝗲𝗰𝗵𝗮𝗻𝗶𝗰 𝗖𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲 is an e-tournament based on the world's only simulator for repairing Mars Rovers. Take part in solving challenging tasks and become the master of leader board.
Why similar: Space Sim 29.8%, Sandbox 18.6%, Simulation 11.6%, Management 8.6%, Building 7.7%
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 42.7%, Simulation 25%, Building 8.7%, Space 8.2%, Strategy 6.5%
Play with a variety of fireworks and even make custom ones yourself using different containers, powders and colors.
Why similar: Sandbox 38.9%, Simulation 19.6%, Immersive Sim 15.3%, Crafting 9.2%, Physics 6.3%
World Climate Lab is a real-time planetary climate simulator. Import your own terrain or sculpt a world in the topography editor, then watch a living climate emerge from physics: winds, oceans, cloud bands and ice. Every climate is calculated, not painted.
Why similar: Space Sim 33.3%, Sandbox 21.5%, Simulation 19.9%, Immersive Sim 11.8%, Space 4.5%
A sci-fi settlement building game with orbital mechanics. Start from a spaceship, scan asteroids, manage fuel, ore, electricity, time, and sanity, while expanding your settlement, exploring an alien solar system, and building stations and spacecraft to support your growing colony.
Why similar: Space Sim 36.3%, Sandbox 13.9%, Simulation 11.3%, Building 10.2%, Realistic 7.7%
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 37.3%, Simulation 25.7%, Sandbox 17.6%, Space 13.9%, Strategy 5.1%
A co-op starship bridge sim for 6–25 players. Man a station — helm, weapons, sensors, engineering, comms or command — and no one can fly the ship alone. Communicate, coordinate, and survive together.
Why similar: Space Sim 35.3%, Sandbox 22.6%, Simulation 18.3%, Immersive Sim 12.6%, Space 5.2%
A first-person astronomy simulator built on real astronomical data. Set up, align, and operate your telescope as the sky changes with location, date, and time. Use star charts and bright stars to find targets, then observe the Moon, planets, and faint, distant deep-sky objects through the eyepiece.
Why similar: Space Sim 45.8%, Sandbox 12.7%, Simulation 11.9%, Realistic 11.4%, Physics 5.5%
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 54.7%, Simulation 32%, Space 13.2%
47 million probes were launched into the void. Yours just found something alive. A living universe simulation where evolution never stops — not even when you do.
Why similar: Space Sim 28.5%, Sandbox 21.7%, Simulation 20.9%, Procedural Generation 7.8%, Space 5.2%
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 49.4%, Simulation 27.9%, Realistic 11.7%, Space 10.6%, Singleplayer 0.4%
Build your space station, design your own ships, and explore relaxed sci-fi sectors in Astrosphere. Gather resources, research new technologies, and shape your journey through the cosmos at your own pace.
Why similar: Space Sim 32.9%, Sandbox 15.5%, Simulation 10.6%, Building 10%, Management 8.5%
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: Sandbox 24.3%, Space Sim 24%, Simulation 20.1%, Space 17.9%, Building 8%
