- #1 Soyuz Constructors
97% matchNo user reviews
Dev: Pyramid Games S.A.Pub: Pyramid Lab
Windows
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 15.2%, Science 13.6%, Space 9%, Moddable 7.7% ★, Building 7.2%
- #2 Kerbal Space Program
96% matchOverwhelmingly Positive96% of 146,254 reviews2015
Dev: SquadPub: Private Division
Windows · Mac · Linux
Median: 5.4 hrsMean: 66.1 hrs≥1hr: 84%
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 15.5%, Science 14.6%, Space 13.8%, Moddable 11% ★, Sandbox 9.2%
- #3 Kerbal Space Program 2
95% matchMostly Negative26% of 31,953 reviews2023
Dev: Intercept GamesPub: Private Division
Windows
Median: 7.7 hrsMean: 19.4 hrs≥1hr: 86%
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.
Why similar: Science 15.5%, Space Sim 13.9%, Moddable 10.9% ★, Space 9.7%, Sandbox 8.3%
- #4 Rocket Science
95% matchVery Positive81% of 176 reviews2020
Dev: unbeGames
Windows
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.
Why similar: Space Sim 16.2%, Science 15.1%, Space 10.1%, Education 8.9%, Sandbox 8.3%
- #5 Celestia
94% matchPositive84% of 19 reviews2026
Dev: Celestia Development Team
Windows
A real-time 3D space simulator and interactive planetarium. Travel to any planet, moon, star, or galaxy and view it from any point in space and time. Accelerate time, land on alien worlds, and expand the universe with community-made add-ons.
Why similar: Space Sim 25.9%, Science 14.9%, Moddable 14.4% ★, Education 12.3%, Simulation 8.8%
- #6 Space Engineers 2
93% matchMostly Positive75% of 5,449 reviews2025
Dev: Keen Software House
Windows
Median: 1.9 hrsMean: 11.1 hrs≥1hr: 64%
Space Engineers 2 is a playable Early Access Alpha sandbox focused on engineering, exploration, and colonization in a fully destructible universe. Design and build ships, stations, and planetary bases while uncovering the story of Miro and Ivan Sokol. Help shape the future of the Almagest system.
Why similar: Moddable 16.3% ★, Science 13.2%, Space Sim 12.7%, Space 9.7%, Sandbox 8.8%
- #7 Spaceflight Simulator 2
93% matchNo user reviews
Dev: Team Curiosity ✦
Windows · Mac
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 24.5%, Science 12.9%, Sandbox 10.4%, Space 9.3%, Moddable 7.8% ★
- #8 Spaceflight Simulator
92% matchOverwhelmingly Positive97% of 9,683 reviews2022
Dev: Team Curiosity ✦
Windows · Mac
Median: 5.3 hrsMean: 15.2 hrs≥1hr: 83%
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 25.4%, Science 16.2%, Space 13.1%, Sandbox 12.4%, Moddable 7.3% ★
- #9 Solar Expanse - Space Exploration Manager
91% matchVery Positive88% of 1,295 reviews2026
Dev: SpaceOpsPub: Games Operators
Windows
Median: 4.8 hrsMean: 14.7 hrs≥1hr: 77%
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: Science 18.8%, Space Sim 18.3%, Space 12.7%, Sandbox 10%, Physics 8.5%
- #10 9.8
91% matchNo user reviews2027
Dev: Tremoço Games
Windows · Mac · Linux
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 23.1%, Science 14.2%, Moddable 12.2% ★, Space 11.1%, Sandbox 9.9%
- #11 RemoteSpace: First Settlement
90% matchNo user reviews
Dev: ShadowDev
Windows
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 24.9%, Science 15.1%, Building 10.1%, Space 8.7%, Physics 7.7%
- #12 Universe Sandbox
89% matchOverwhelmingly Positive96% of 32,034 reviews2015
Dev: Giant Army
Windows · Mac
Median: 2.4 hrsMean: 24.4 hrs≥1hr: 71%
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.
Why similar: Space Sim 20.1%, Science 15.6%, Education 12.3%, Space 12.1%, Sandbox 11.2%
- #13 Meco Rocket Simulator
88% matchPositive81% of 16 reviews2025
Dev: Dannie Sim
Windows · Mac
Design real rocket engines with real physics, no black boxes. You're an underpaid engineer at Mecodyne, building engines that fire only if they'd work for real, without regard for your safety. A serious engineering sim that teaches by doing. Built solo.
Why similar: Science 16.5%, Space Sim 12.9%, Education 12.6%, Space 12%, Sandbox 11.1%
- #14 Kepler Project
88% matchNo user reviews
Dev: Kepler Project
Windows · Linux
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 29.1%, Space 19.4%, Science 16%, Education 11.7%, Simulation 9%
- #15 Juno: New Origins
87% matchVery Positive89% of 3,531 reviews2023
Dev: Jundroo, LLC
Windows · Mac
Median: 1.1 hrsMean: 13.6 hrs≥1hr: 51%
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.
Why similar: Space Sim 17.6%, Science 15.8%, Moddable 14.1% ★, Education 9.6%, Building 8.5%
- #16 Junkyard Space Agency
86% matchNo user reviews2027
Dev: Nullterm
Windows · Mac · Linux
Build ships from scrap and fly them in a gritty space sim. Venture solo or team up. Hunt for parts, haul vital resources, and keep your space agency afloat.
Why similar: Moddable 17.2% ★, Science 14.5%, Space Sim 13.2%, Space 10.8%, Building 8.9%
- #17 Celestial Command
86% matchMixed62% of 704 reviews2014
Dev: Science Interactive
Windows · Linux
Median: 1.5 hrsMean: 6.3 hrs≥1hr: 62%
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 23.6%, Space Sim 16.8%, Sandbox 13%, Simulation 8.9%, Building 8%
- #18 Final Orbit
85% matchNo user reviews2026
Dev: Bad Sector
Windows
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 19.2%, Space 13.2%, Science 12.6%, Sandbox 12.6%, Open World 10.4%
- #19 Between the Stars
84% matchMostly Positive74% of 2,495 reviews2024
Dev: Isolated Games
Windows
Median: 2.5 hrsMean: 6.6 hrs≥1hr: 70%
Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.
Why similar: Space Sim 25.7%, Space 21%, Sandbox 8.3%, RPG 7.9%, Sci-fi 7.6%
- #20 The Universe of Red Hope
84% matchNo user reviews
Dev: Shelby County Video Game DevelopmentPub: Mathematics Firms of Memphis
Windows
A classic fantasy MMORPG powered by uMMORPG—discover dungeons, fight powerful creatures, forge rare equipment, and shape a living world alongside hundreds of players.
Why similar: Space Sim 27.3%, Science 23.3%, Education 15.5%, Space 13.4%, Sci-fi 9.3%
- #21 ΔV: Rings of Saturn
83% matchVery Positive93% of 3,449 reviews2023
Dev: Kodera Software
Windows · Mac · Linux
Median: 8.3 hrsMean: 11.7 hrs≥1hr: 85%
A physics-based mining sim, set in the thickest debris field in Sol. Every action has a reaction, lasers are invisible without a medium, and your thrust is a potent weapon. Find trade, adapt your equipment to your playstyle, hire a crew to help. Unravel the mysteries of the rings, or just get rich.
Why similar: Space Sim 19.8%, Science 16.3%, Space 13.5%, Physics 9%, Sci-fi 8.1%
- #22 Galaxy Engine
82% matchPositive88% of 16 reviews2025
Dev: Narcis Calin
Windows · Linux
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 25.9%, Space 16.8%, Moddable 16.1% ★, Sandbox 15.6%, Physics 12.1%
- #23 Space Engineers
81% matchVery Positive89% of 134,313 reviews2019
Dev: Keen Software House
Windows
Median: 9.0 hrsMean: 96.4 hrs≥1hr: 88%
Space Engineers is a sandbox engineering game where you design and build ships, stations, and planetary bases in a fully destructible environment. Explore planets and space, mine resources, survive hazards, and engage in combat alone or with friends in Creative or Survival modes.
Why similar: Space Sim 19.8%, Moddable 19.3% ★, Space 10.7%, Sandbox 9.3%, Building 9.3%
- #24 Absolute Sol
81% matchNo user reviews
Dev: Absolute Sol
Windows
A physics sandbox of our Solar System. Fly the planets, change orbits, and watch Earth freeze, boil, or take a hit. Spawn worlds, cross Roche limits, and inspect atmospheres, magnetospheres, rings, and stellar heatmaps.
Why similar: Science 23.5%, Education 18.9%, Sandbox 15.7%, Simulation 11.7%, Physics 11.6%
- #25 Project Klorp
80% matchNo user reviews
Dev: Static Drift
Windows
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 30%, Space 17.2%, Sandbox 12.8%, Simulation 10.8%, Physics 10.3%
- #26 Starship EVO
79% matchVery Positive84% of 1,522 reviews2020
Dev: Moonfire Entertainment
Windows
Median: 1.6 hrsMean: 6.4 hrs≥1hr: 58%
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 18.4%, Space Sim 17%, Building 15.9%, Sandbox 13.1%, Simulation 7.7%
- #27 SpaceEngine
78% matchOverwhelmingly Positive96% of 16,417 reviews2019
Dev: Cosmographic Software
Windows
Median: 2.1 hrsMean: 44.3 hrs≥1hr: 66%
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 20.8%, Science 17.3%, Space 13.1%, Sandbox 11.6%, Open World 11.3%
- #28 Stargazer Simulator
79% matchNo user reviews2027
Dev: TeamCosmicDawn
Windows
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 34.3%, Science 25.2%, Physics 9.7%, Space 7.7%, Sandbox 7.3%
- #29 Nimbatus - Drone Creator
78% matchVery Positive91% of 274 reviews2020
Dev: Stray Fawn Studio
Windows · Mac · Linux
Median: 42 minMean: 5.3 hrs≥1hr: 41%
Use the Nimbatus Drone Creator to construct physically simulated drones and try them out in a virtual testing environment. Do you have what it takes to become a drone engineer?
Why similar: Space Sim 17.7%, Science 16.3%, Simulation 10.9%, Sandbox 9.8%, Space 8.9%
- #30 Starscrip
77% matchNo user reviews
Dev: FLOOPYPub: boomthump
Windows
The accessible space-sim. Fly, fight, and trade through a galaxy where the prices and borders came from 700,000 days of astropolitical generation that keep ticking.
Why similar: Space Sim 32.9%, Space 15.6%, Open World 11.1%, Sci-fi 8.8%, Sandbox 7.6%
- #31 Interstellar Pilot 2
77% matchVery Positive90% of 161 reviews2023
Dev: Pixelfactor Ltd.
Windows
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 29.3%, Sandbox 14.9%, Space 11.9%, Simulation 10.5%, Strategy 9%
- #32 Celestial Golf
76% matchNo user reviews2026
Dev: Jukebox Interactive
Windows · Linux
It’s 2D golf on an astronomical scale. Bite-sized missions will teach you the techniques of real space flight, without having to worry about fuel or crew. Precisely plan orbital trajectories over the moons of Mars, through the rings of Saturn, and boldly go where no golf ball has gone before.
Why similar: Space Sim 17.6%, Science 16.3%, Space 13.2%, Education 12.5%, Physics 9.1%
- #33 Landinar: Into the Void
76% matchMixed56% of 244 reviews2019
Dev: Convoy Games
Windows
Median: 2.6 hrsMean: 6.5 hrs≥1hr: 88%
Landinar: Into the Void is a top-down space-adventure-RPG. You are recruited as a rookie bounty hunter in the oppressive Landinar Empire. On your journey through the quadrant you will meet diverse characters, build your own spaceship and choose your battles.
Why similar: Space Sim 26.2%, Space 19%, Building 12.5%, Open World 8.8%, Sandbox 8.5%
- #34 Rela
74% match1 user reviews100% of 1 reviews2026
Dev: Relavity
Windows · Linux
This program simulates astrophysics, allowing the creation of stellar systems in the void and the experience of being one of the celestial bodies.
Why similar: Science 26.3%, Education 18.6%, Space 14.1%, Physics 13.6%, Simulation 7.7%
- #35 Satellite Command
75% matchMixed64% of 81 reviews2016
Dev: Stormtide
Windows
Satellite Command is a realistic, relaxing astrophysics simulator. Complete contracts with real data, launch and take control of ever more powerful Satellites, research advanced technology and build your Space Agency!
Why similar: Space Sim 21.6%, Science 19.9%, Education 13.9%, Space 12.6%, Sandbox 11.1%
- #36 Keplerian Space Discovery
73% matchNo user reviews88% of 24 reviews2026
Dev: Kugelblitz
Windows
Travel through the solar system in your own spaceship! The motion of each celestial body is accurately reproduced by the Kepler equation.
Why similar: Science 23.2%, Space Sim 22.6%, Space 15.1%, Building 12.5%, Physics 9.5%
- #37 Darkstar One
75% matchVery Positive84% of 625 reviews2008
Dev: Ascaron Entertainment ltd.Pub: Strategy First
Windows
Median: 1.0 hrsMean: 8.8 hrs≥1hr: 50%
Darkstar One offers a fantastic amount of freedom of choice. The story-based missions gradually lead you deeper into the galaxy to new races, new technologies and ever stronger opponents. Explore a vast array of solar systems in search of hidden artifacts of ancient races, essential objects for upgrading your ship--the Darkstar One.
Why similar: Space Sim 32.1%, Space 25.1%, Sci-fi 11.9%, Open World 9.7%, Exploration 5.5%
- #38 Ice Caves of Europa
74% matchMixed57% of 30 reviews2018
Dev: Io Normal
Windows · Mac
Ice Caves of Europa will challenge your reflexes and your mind, blending free-flowing precision flight with confronting science fiction ideas about the nature of humanity. An inquisitive flying robot exploring the hazardous caves beneath Europa stumbles upon a sinister interplanetary conspiracy.
Why similar: Space Sim 20.1%, Science 18.9%, Education 12.1%, Difficult 8.6%, Physics 8.1%
- #39 Tiny Space Academy
73% matchMixed64% of 55 reviews2021
Dev: Full Orbit Games LLC
Windows · Mac
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 26.7%, Space 17.1%, Education 13.7%, Physics 12.3%, Building 11.7%
- #40 Captain Forever Trilogy
73% matchVery Positive89% of 199 reviews2018
Dev: Farbs
Windows
Millions of players worldwide have flown, built, and fought their way through Captain Forever. CF Trilogy brings Captains Forever, Successor, and Impostor to Steam with a beautiful new renderer, new modules, and a reimagined world written by acclaimed novelist Cassandra Khaw.
Why similar: Space Sim 17.8%, Science 15.9%, Strategy 10.8%, Space 10.4%, Building 9.8%
- #41 Space Crash Simulator
71% matchPositive81% of 21 reviews2025
Dev: WPC
Windows · Mac
Real-time planetary collision sandbox powered by SPH physics: smash planets together and watch the destruction and its aftermath!
Why similar: Space Sim 35.6%, Space 16.7%, Sandbox 12.4%, Physics 11.8%, Science 7.2%
- #42 Children of a Dead Earth
72% matchVery Positive90% of 938 reviews2016
Dev: Q Switched Productions, LLC
Windows · Mac
Median: 2.2 hrsMean: 23.6 hrs≥1hr: 65%
The most scientifically accurate space warfare simulator ever made. Now with Steam Workshop!
Why similar: Science 23.6%, Space 21.1%, Space Sim 15.2%, Simulation 10.4%, Sci-fi 9.8%
- #43 X Rebirth
72% matchMixed44% of 7,316 reviews2013
Dev: Egosoft
Windows · Mac · Linux
Median: 3.3 hrsMean: 19.0 hrs≥1hr: 88%
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 29%, Space Sim 21.6%, Sci-fi 12.4%, Simulation 11.7%, Sandbox 9.4%
- #44 Lunar Odyssey
71% matchMixed65% of 20 reviews2022
Dev: Fractal Blue EntertainmentPub: Visual Purple Inc.
Windows
Don your xEMU Spacesuit, explore the Orontius Crater, and Lunar Module in an immersive first-person VR experience with out of this world accuracy and interaction. Follow real-life procedures, launch the Apollo-era Lunar Module, play Space Golf, and experience the moon like never before.
Why similar: Science 19.4%, Space Sim 16.4%, Education 13.6%, Space 13.4%, Physics 7.7%
- #45 3030 Deathwar Redux - A Space Odyssey
70% matchVery Positive94% of 1,166 reviews2017
Dev: Bird in SkyPub: Crunchy Leaf Games
Windows
Median: 7.5 hrsMean: 8.2 hrs≥1hr: 90%
3030 Deathwar is a unique mix of Adventure and Space Sim. Explore star systems, mine and hunt pirates in top-down mode. Leave your ship and switch into classic Adventuring mode, where you explore derelicts, talk to shady characters or head over to the space bar for a drink.
Why similar: Space 21.5%, Space Sim 20.2%, Open World 11.6%, Sci-fi 9.8%, Sandbox 9.8%
- #46 Space Station Continuum
71% matchNegative15% of 39 reviews2020
Dev: N-Body Solutions
Windows
Space Station Continuum is a building & management sim inspired by the past, present, and future of humans in space.
Why similar: Space Sim 21.2%, Science 19.1%, Space 12.1%, Building 10.1%, Sandbox 10%
- #47 Among The Stars
70% matchNo user reviews2026
Dev: Hidden Universe Games
Windows
You find yourself in a distant galaxy full of merchants, diplomats, bandits and powerful factions. Explore unknown galaxies, trade, fight pirates or become one. Uncover mysteries and shape the universe!
Why similar: Space Sim 37.8%, Sandbox 16.7%, Exploration 8.9%, RPG 7.5%, Open World 7.4%
- #48 Take On Mars
70% matchMixed55% of 2,032 reviews2017
Dev: Bohemia Interactive
Windows
Median: 3.0 hrsMean: 10.8 hrs≥1hr: 87%
Take On Mars places you right in the middle of mankind’s most exciting undertaking. Start out in the seat of a rover operator, finish as the first human to have ever set foot on the Red Planet.
Why similar: Space Sim 17%, Space 17%, Science 16.5%, Building 8.3%, Moddable 7.9% ★
- #49 Elite Dangerous
68% matchMostly Positive77% of 107,282 reviews2015
Dev: Frontier Developments
Windows
Median: 18.2 hrsMean: 148.6 hrs≥1hr: 89%
Take control of your own starship and blaze your trail in an ever-changing galaxy. Master the arts of combat, mining and trade or venture out into the unknown across a 1:1 scale universe.
Why similar: Space Sim 35.6%, Space 18.2%, Open World 12%, Sci-fi 8.4%, Sandbox 5.8%
- #50 Star Horizon
69% matchMixed60% of 150 reviews2015
Dev: Orbital Knight
Windows · Mac · Linux
Median: 3.6 hrsMean: 3.9 hrs≥1hr: 93%
Experience fast action, thrilling levels, spectacular explosions and lots of pew-pew-pew. Star Horizon is a reboot for the on-rails space shooter genre.
Why similar: Space Sim 21.4%, Space 20.1%, Sci-fi 11.2%, Sandbox 9.1%, Simulation 8.1%
- #51 Enter The Moon
69% match6 user reviews67% of 6 reviews2018
Dev: Paul SobkowiakPub: LPS-Interactive
Windows
Space simulation moon game. Explore the moon, mars, venus and mercury in breathtaking real-time 3D. Explore their geological aspects. Battle against spaceships or a secret lunar base. Enter the ISS. Measure the moon. And get in the cockpit.
Why similar: Space Sim 27.5%, Science 18.5%, Education 13.8%, Space 13.7%, Sci-fi 8.2%
- #52 Rocket Engineer
67% matchNo user reviews2026
Dev: Xavier B.
Windows
Design custom rockets and master 2D orbital mechanics to navigate a fully simulated solar system. Establish outposts, process local resources to launch interplanetary missions, and manage critical supply lines to keep your colony's workforce alive.
Why similar: Space Sim 26.6%, Science 17.5%, Sandbox 12.8%, Space 10%, Simulation 6.2%
- #53 Rodina
68% matchVery Positive93% of 1,333 reviews2014
Dev: Elliptic Games
Windows
Median: 2.9 hrsMean: 6.4 hrs≥1hr: 72%
A single-developer passion project. A seamless full scale solar system. Thrilling action. Be part of an incredible journey as a Universe is built from the ground up!
Why similar: Space 26.2%, Space Sim 17.2%, Open World 15.3%, Sandbox 12.9%, Sci-fi 9.7%
- #54 VoidExpanse
68% matchMostly Positive71% of 768 reviews2015
Dev: AtomicTorch Studio
Windows · Mac · Linux
Median: 3.9 hrsMean: 6.1 hrs≥1hr: 93%
Explore the vast reaches of VoidExpanse -- mine asteroids, upgrade your ship, trade, complete missions, advance your character and survive fast-paced combat with hostile aliens and mercenaries in the rich and exciting Sci-Fi universe of VoidExpanse!
Why similar: Space 24.9%, Moddable 17.8% ★, Open World 12.5%, Sandbox 11.9%, Sci-fi 9.8%
- #55 Capital Command
67% matchNo user reviews2026
Dev: Hellride GamesPub: Hooded Horse
Windows
Take the helm of a state-of-the-art warship as you fight epic space battles in a sandbox campaign. Upgrade and customize your ship, master the art of maneuvering, and use a blend of tactical prowess and heavy firepower to overcome deadly threats.
Why similar: Space Sim 22.3%, Moddable 16.8% ★, Space 12.2%, Sandbox 9.8%, Open World 8.1%
- #56 X3: Terran Conflict
67% matchVery Positive85% of 2,864 reviews2008
Dev: Egosoft
Windows · Mac · Linux
Median: 1.1 hrsMean: 31.9 hrs≥1hr: 51%
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 27.9%, Space Sim 22.3%, Sandbox 12.3%, Sci-fi 8.6%, Open World 8.2%
- #57 Starcom: Nexus
66% matchVery Positive90% of 2,315 reviews2019
Dev: Wx3 Labs, LLC
Windows · Linux
Median: 3.8 hrsMean: 13.5 hrs≥1hr: 84%
Suddenly thrown into an unknown galaxy, you must explore, fight or befriend aliens and transform your ship from a small survey vessel into a powerful battlecruiser to unravel the mystery of the forces that brought you here and find your way home.
Why similar: Space 27.5%, Space Sim 20.9%, Sci-fi 12%, Open World 9.9%, RPG 7.3%
- #58 Reentry - A Space Flight Simulator
64% matchOverwhelmingly Positive97% of 1,351 reviews2025
Dev: Lyra Creative
Windows
Median: 2.2 hrsMean: 6.3 hrs≥1hr: 70%
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.
Why similar: Space Sim 24.2%, Science 17.9%, Space 13.9%, Education 9%, Open World 8.8%