- #1 PULSAR: Lost Colony
97% matchVery Positive90% of 5,732 reviews2021
Dev: Leafy Games
Windows · Mac · Linux
Median: 7.3 hrsMean: 16.7 hrs≥1hr: 87%
The co-op open-world space sim where everyone has a role! Pilot the ship. Reroute power. Launch nukes. Explore alien planets. Research new talents. Work together to find the Lost Colony! ...or just deliver some biscuits
Why similar: Space Sim 21.2%, Space 15.4%, Open World 12.1%, Sci-fi 9.8%, Online Co-Op 9.8%
Why You'll Like It: Offers a cooperative ship-management experience where players explore detailed starships and work together to operate systems.
- #2 Void Crew
96% matchVery Positive86% of 8,426 reviews2024
Dev: Hutlihut GamesPub: Focus Entertainment
Windows
Median: 9.2 hrsMean: 16.8 hrs≥1hr: 94%
Void Crew is a Chaotic, Co-op Roguelite game for 1 to 6 players: Outfit your spaceship and crew for thrilling quests, brave fierce enemies in Space Battles... and try not to panic!
Why similar: Space Sim 27.1%, Space 15.2%, Character Customization 13.8%, Online Co-Op 12.7%, Multiplayer 12.1%
Why You'll Like It: Focuses on cooperative ship operations and exploration in a sci-fi setting that mirrors the crew-based dynamics of the Orville.
- #3 SpaceEngine
95% 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: Flight 16.9%, Space Sim 16.2%, Space 15.2%, Sandbox 14.3%, Open World 12.8%
Why You'll Like It: Allows for unparalleled exploration of the universe, perfect for players who enjoy the scale and wonder of space travel.
- #4 Elite Dangerous
94% 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 28.9%, Space 22.1%, Open World 14.3%, Sci-fi 10.3%, Sandbox 7.5%
Why You'll Like It: Provides a vast, open-world space experience with a focus on ship piloting and realistic exploration.
- #5 Tacoma
94% matchVery Positive86% of 4,801 reviews2017
Dev: Fullbright
Windows · Mac · Linux
Median: 3.7 hrsMean: 4.5 hrs≥1hr: 92%
Tacoma is a sci-fi narrative adventure from the creators of Gone Home. Set aboard a high-tech space station in the year 2088, explore every detail of how the station’s crew lived and worked, finding the clues that add up to a gripping story of trust, fear, and resolve in the face of disaster.
Why similar: Space 45.8%, Sci-fi 35.5%, First-Person 16.9%, Casual 1.9%
Why You'll Like It: A narrative-driven exploration game set on a space station that emphasizes environmental storytelling and detailed interiors.
- #6 Starship EVO
93% 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 29.8%, Sandbox 22.6%, Space Sim 18.4%, Sci-fi 10.9%, Open World 10.9%
Why You'll Like It: Combines ship building with exploration, allowing players to create and walk through their own custom vessels.
- #7 Observation
92% matchMostly Positive78% of 5,189 reviews2020
Dev: No CodePub: Devolver Digital
Windows
Median: 3.7 hrsMean: 5.0 hrs≥1hr: 85%
Observation is a sci-fi thriller uncovering what happened to Dr. Emma Fisher, and the crew of her mission, through the lens of the station’s artificial intelligence S.A.M.
Why similar: Space 58.7%, Sci-fi 37.3%, First-Person 4%
Why You'll Like It: Features a unique perspective on space station exploration with a heavy focus on atmosphere and ship-wide interaction.
- #8 Prey
91% matchVery Positive91% of 54,492 reviews2017
Dev: Arkane StudiosPub: Bethesda Softworks
Windows
Median: 7.0 hrsMean: 27.3 hrs≥1hr: 90%
In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted.
Why similar: Space 31.4%, Sci-fi 26.2%, FPS 20.5%, First-Person 11.3%, Open World 10.6%
Why You'll Like It: An immersive sim set on a massive, highly detailed space station that rewards exploration and environmental interaction.
- #9 Barotrauma
90% matchVery Positive94% of 89,315 reviews2023
Dev: FakeFishPub: Daedalic Entertainment
Windows · Mac · Linux
Median: 9.0 hrsMean: 56.1 hrs≥1hr: 91%
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
Why similar: Multiplayer 59.4%, Sci-fi 40.6%
Why You'll Like It: A complex submarine simulation that captures the tension and teamwork required to maintain a vessel in a hostile environment.
- #10 Alien: Isolation
91% matchVery Positive93% of 66,577 reviews2014
Dev: Creative AssemblyPub: SEGA
Windows · Mac · Linux
Median: 4.9 hrsMean: 17.1 hrs≥1hr: 82%
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.
Why similar: Space 39.3%, Sci-fi 32.8%, First-Person 17.5%, FPS 10.3%
Why You'll Like It: Renowned for its painstaking recreation of the Nostromo, offering an unparalleled level of ship-based atmospheric detail.
- #11 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 24.3%, Space 21.8%, Sandbox 21.4%, Open World 14.2%, Realistic 9.4%
Why You'll Like It: Provides a scientific and physics-based look at the cosmos, perfect for fans of space-themed simulations.
- #12 Starbase
89% matchMixed56% of 6,753 reviews2021
Dev: Frozenbyte
Windows
Median: 14.3 hrsMean: 91.6 hrs≥1hr: 91%
Starbase is a hybrid voxel/vertex-based space MMO with a fully destructible and infinitely expanding universe, with a focus on building and designing spaceships and stations, exploration, resource gathering, crafting, trading, and combat.
Why similar: Space Sim 23.8%, Space 16.7%, Sandbox 15.5%, Open World 15.1%, Sci-fi 10%
Why You'll Like It: A massive sandbox that allows for detailed ship construction and exploration in a multiplayer space environment.
- #13 Astrox Imperium
88% matchVery Positive84% of 1,249 reviews2019
Dev: Jace Masula
Windows
Median: 4.1 hrsMean: 16.2 hrs≥1hr: 66%
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 34.9%, Space Sim 25.4%, Sandbox 18%, Open World 13.4%, Sci-fi 8.2%
Why You'll Like It: A space-sim that emphasizes exploration and ship customization in a vast, open universe.
- #14 The Expanse: A Telltale Series
86% matchMostly Positive76% of 2,875 reviews2023
Dev: Deck NinePub: Telltale
Windows
Median: 5.7 hrsMean: 8.4 hrs≥1hr: 76%
Take on the role of Camina Drummer and explore the dangerous, uncharted edges of the Belt. From scavenging wrecked ships in a zero-g environment, to combating fearsome pirates, you make the difficult choices in this latest Telltale adventure. All five episodes playable at launch!
Why similar: Space 43.1%, Sci-fi 28.8%, Third Person 20.9%, 3D 7.1%
Why You'll Like It: Focuses on narrative exploration within the confined, realistic setting of a spaceship crew.
- #15 Evochron Legacy SE
87% matchVery Positive83% of 445 reviews2016
Dev: StarWraith 3D Games LLC
Windows
Median: 1.6 hrsMean: 6.8 hrs≥1hr: 62%
Advanced Space Flight, Combat, Trading, and Exploration Simulation. Set in a vast explorable universe, Evochron Legacy offers freeform gameplay with many diverse objectives and paths to choose from.
Why similar: Space Sim 24.7%, Space 17.7%, Sandbox 14.5%, Open World 11.6%, Sci-fi 9.9%
Why You'll Like It: A space-sim that prioritizes realistic flight and exploration mechanics for a dedicated pilot experience.
- #16 SOMA
86% matchOverwhelmingly Positive96% of 52,486 reviews2015
Dev: Frictional Games
Windows · Mac · Linux
Median: 5.6 hrsMean: 10.2 hrs≥1hr: 89%
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
Why similar: Sci-fi 61.7%, First-Person 38.3%
Why You'll Like It: Delivers a deeply atmospheric sci-fi exploration experience with a focus on environmental storytelling.
- #17 Hardspace: Shipbreaker
84% matchVery Positive89% of 22,322 reviews2022
Dev: Blackbird Interactive
Windows
Median: 4.7 hrsMean: 24.1 hrs≥1hr: 86%
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 30.9%, Sandbox 19.4%, Space Sim 19.1%, Sci-fi 18.5%, First-Person 7.4%
Why You'll Like It: Offers a granular look at ship interiors, focusing on the technical and structural aspects of space vessels.
- #18 Subnautica
82% matchOverwhelmingly Positive97% of 378,847 reviews2018
Dev: Unknown Worlds Entertainment
Windows · Mac
Median: 13.3 hrsMean: 39.8 hrs≥1hr: 90%
Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.
Why similar: Open World 33.7%, Sandbox 20.2%, Sci-fi 16.9%, Multiplayer 16.1%, First-Person 13.1%
Why You'll Like It: While set on an alien planet, it captures the same sense of wonder and base-building exploration found in sci-fi ship games.
- #19 Avorion
83% matchVery Positive90% of 14,549 reviews2020
Dev: Boxelware
Windows · Mac · Linux
Median: 18.8 hrsMean: 99.5 hrs≥1hr: 90%
A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.
Why similar: Flight 20.3%, Space Sim 19.5%, Space 15%, Sandbox 14.5%, Open World 10.8%
Why You'll Like It: A sandbox space game that allows players to build their own ships block-by-block and explore the galaxy.
- #20 Wayward Terran Frontier: Zero Falls
85% matchMixed67% of 542 reviews2016
Dev: Reason Generator Inc.
Windows
2d space combat like no other. From the perspective of a single crew member, explore the fully destructible interior of any ship in a massive living world. Engage in space combat with no hitpoints where you know your enemy is dead when you see them fall out of their ship into the cold dark of space.
Why similar: Space Sim 29.5%, Sandbox 21.1%, Space 20.3%, Open World 17.9%, Sci-fi 11.2%
Why You'll Like It: Features a deep ship-building system where players can walk through their own creations in a space-sim setting.
- #21 Kerbal Space Program 2
84% 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: Space 21.7%, Space Sim 20.8%, Sandbox 19.7%, Open World 12.8%, Realistic 9.8%
Why You'll Like It: Focuses on the physics and engineering of space travel, allowing for creative ship design and exploration.
- #22 ISS Simulator
82% matchMostly Positive79% of 95 reviews2024
Dev: Spacedata.incPub: 株式会社スペースデータ
Windows
The ultimate space simulator game, precisely modeling the space and space environment inside the International Space Station (ISS).
Why similar: Space Sim 34.1%, Space 13.9%, Cinematic 12.1%, Third Person 10.3%, Realistic 10.1%
Why You'll Like It: Provides a realistic, walking-simulator style experience of exploring the International Space Station.
- #23 Rocket Science
81% 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: Flight 21.5%, Space Sim 19.5%, Space 18.2%, Sandbox 16%, Open World 10.3%
Why You'll Like It: Focuses on the sandbox and building aspects of space exploration with a heavy emphasis on physics.
- #24 Approximately Up
77% matchVery Positive94% of 918 reviews2026
Dev: Approximately Games
Windows
Median: 11.4 hrsMean: 23.8 hrs≥1hr: 90%
Build, crash, rebuild! Explore new planets in co-op multiplayer with your fully modular spaceship made from whatever bolts together long enough to fly. Mount giant thrusters, annoying cables, and everything in between. Complete wild missions, face the dangers of space and argue with your crew!
Why similar: Space Sim 28.6%, Flight 24.1%, Sandbox 19.8%, Multiplayer 9.9%, Open World 7.4%
- #25 Celestial Command
81% 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 39.6%, Sandbox 23.2%, Space Sim 18.8%, Sci-fi 12.6%, Open World 5.8%
Why You'll Like It: A physics-based space game that allows for complex ship construction and orbital mechanics.
- #26 VoidExpanse
80% 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 34.6%, Sandbox 17.7%, Open World 17%, Sci-fi 13.8%, Character Customization 9.7%
Why You'll Like It: An open-world space RPG that focuses on exploration, trading, and ship progression.
- #27 WebbVR: The James Webb Space Telescope Virtual Experience
79% matchVery Positive90% of 71 reviews2018
Dev: Space Telescope Science Institute
Windows
Join the James Webb Space Telescope in orbit beyond the Moon and explore the universe from its perspective. Planetary systems are born, galaxies form, and stars emerge from within colorful nebulas—all before your eyes.
Why similar: Space Sim 45.6%, Space 36.3%, Casual 18.2%
Why You'll Like It: A casual, educational exploration experience that highlights the wonder of space-based technology.
- #28 StarbaseSim
77% matchVery Positive95% of 61 reviews2025
Dev: AshtorakSimGames
Windows · Linux
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: Flight 21.8%, Space Sim 20%, Sandbox 15.1%, Space 8.8%, Realistic 8.2%
- #29 Flight Of Nova
76% matchVery Positive93% of 561 reviews2022
Dev: Aerovery Lab
Windows · Linux
Flight of Nova is a simulator based on newtonian mechanics in which you control spacecraft in the Noren star system. You fly multiple types of spacecraft doing transport and search missions in an environment with realistic aerodynamics and orbital physics.
Why similar: Flight 21.2%, Space Sim 18.1%, 6DOF 15.9% ★, Sandbox 9%, Sci-fi 8.8%
- #30 Captain Hardcore
75% matchVery Positive80% of 195 reviews2026
Dev: AntiZero Games
Windows
Board your ship and explore a universe built for sexual experimentation, creativity, and complete freedom. Build your crew, customize every detail of their bodies and outfits, and use your ship’s advanced systems to create, control, and replay your own scenes - all in the name of science!
Why similar: 6DOF 23.9% ★, Space 16.4%, Sandbox 16.2%, Character Customization 12.9%, FPS 12.2%
- #31 Ship Simulator Realistic
78% matchMixed58% of 81 reviews2022
Dev: Gregory Nikolaidis
Windows
Ship Simulator Realistic experience the real simulation. The game will be based on a free roam aspect to explore the Greece Scenery in a physics based game , realistic handling and many more features.
Why similar: Open World 45.7%, Casual 32.3%, 3D 22%
Why You'll Like It: Focuses on the exploration and operation of vessels, providing a grounded experience for simulation fans.
- #32 SpaceCraft
75% matchMixed65% of 2,687 reviews2026
Dev: Shiro Games
Windows
Median: 13.4 hrsMean: 47.3 hrs≥1hr: 91%
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.
Why similar: Space Sim 20.8%, Space 19.3%, Sandbox 16.5%, Open World 13.8%, Sci-fi 12.4%
- #33 Underspace
76% matchVery Positive81% of 458 reviews2024
Dev: Pastaspace InteractivePub: Camlann Games
Windows
Median: 42 minMean: 5.1 hrs≥1hr: 44%
The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with mod support and PvP/co-op multiplayer. You're going to need a bigger ship.
Why similar: Flight 20.8%, Space Sim 14.9%, 6DOF 14.5% ★, Space 12.7%, Sandbox 10.3%
- #34 In The Black
73% matchMostly Positive72% of 94 reviews2026
Dev: Impeller Studios
Windows
Nuclear-powered space combat in the 23rd century! In The Black ® is an intense, realistic space combat simulator with a serious respect for science. It is laser focused on the pilot experience and features single- and online multiplayer game modes, plus robust ship customization options.
Why similar: Flight 23.5%, Space Sim 21.1%, Space 13.8%, Realistic 9.5%, Sci-fi 9.1%
- #35 Spaceflight Simulator
72% 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 33.4%, Sandbox 25.9%, Space 25.7%, Open World 6.9%, Realistic 5.8%
- #36 Endix
71% matchMostly Positive73% of 132 reviews2026
Dev: EndixPub: Endix
Windows
Explore unique & immersive booths from your favorite games. Watch exclusive trailers, compete in mini-games, and connect with players, creators & developers from around the world. All inside a living, free multiplayer experience.
Why similar: Character Customization 28.9%, Open World 22.3%, Third Person 19%, First-Person 14.5%, 3D 8.6%
- #37 Cyber Car
74% matchMixed59% of 91 reviews2022
Dev: Cyber Car Industries
Windows
Feel yourself in a futuristic world piloting ships through incredible scenery! Made for VR, Cyber Car will undoubtedly be a relaxing and immersive experience. Put your problems aside, and come ride and enjoy the best virtual reality experience ever made!
Why similar: Flight 29.6%, 6DOF 26.6% ★, Space Sim 16.7%, Open World 9.5%, Multiplayer 6.5%
- #38 STARSEEKER: Astroneer Expeditions
71% matchMixed58% of 868 reviews2026
Dev: System Era SoftworksPub: Devolver Digital
Windows
Join the ESS Starseeker crew to explore strange new worlds, working together with friends to complete planet-wide objectives before the station journeys on to new planetary destinations. Collect and unlock powerful tech to help the crew tackle the perils of space!
Why similar: Space 24.4%, Online Co-Op 15.1%, Sci-fi 13.5%, Sandbox 13.3%, Multiplayer 11%
- #39 Pyroworks
70% matchVery Positive92% of 2,153 reviews2023
Dev: Deepest Inertia Studio
Windows
Pyroworks is a free-to-play online multiplayer game containing fireworks from real-life companies from all over the globe. You can choose to make your own show, cause destruction and chaos or simulate new years. Don't miss out on playing with your friends - the most fun part.
Why similar: Sandbox 32.1%, Multiplayer 19.8%, Open World 15.6%, Realistic 12%, First-Person 11.2%
- #40 StarMade
73% matchMixed68% of 2,991 reviews2014
Dev: Schine GmbH
Windows · Mac · Linux
Median: 1.3 hrsMean: 18.8 hrs≥1hr: 54%
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!
Why similar: Space 29.8%, Sandbox 23.9%, Open World 15.5%, Multiplayer 10.6%, Sci-fi 10.3%
- #41 Kinetic Void
74% matchOverwhelmingly Negative17% of 1,558 reviews2014
Dev: Badland Studio
Windows · Mac · Linux
Median: 1.9 hrsMean: 3.7 hrs≥1hr: 76%
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 46.1%, Sandbox 22.6%, Sci-fi 15%, Space Sim 12.2%, Open World 4.1%
- #42 Unreal Physics
69% matchMostly Positive73% of 224 reviews2024
Dev: Jilted Generation Productions
Windows
Unreal Physics is a exploration of in-game physics like never before, this dynamic 3D sandbox features a mesmerizing collection of demos, showcasing stunning visuals and realistic simulations. It's a playground of endless possibilities where creativity meets the cutting edge of physics technology
Why similar: Sandbox 27.2%, Third-Person Shooter 26.5%, Realistic 15%, Third Person 10.9%, First-Person 9.2%
- #43 Pancake Sailor
70% matchVery Positive84% of 188 reviews2020
Dev: MarineVerse
Windows · Mac
Relaxing sailing experience. Discover Akalana Islands.
Why similar: Sandbox 22%, Online Co-Op 20.7%, Multiplayer 14.5%, Third Person 12.2%, Open World 10.9%
- #44 Star Trek Online
70% matchMostly Positive79% of 21,258 reviews2012
Dev: Cryptic StudiosPub: Arc Games
Windows
Median: 6.8 hrsMean: 134.6 hrs≥1hr: 84%
In Star Trek Online, the Star Trek universe appears for the first time on a truly massive scale. Players take the captain's chair as they command their own starship and crew. Explore strange new worlds, seek out new life and new civilizations, and boldly go where no one has gone before.
Why similar: Space 30.8%, Sci-fi 21.5%, Open World 14%, Character Customization 11.4%, Multiplayer 9.4%
- #45 Space Engineers 2
66% 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: Space 21.3%, Sandbox 20.6%, Space Sim 18.8%, Open World 14.2%, Sci-fi 13.4%
- #46 Hazeron Starship
68% matchVery Positive83% of 105 reviews2023
Dev: Hazeron Freehold LLC
Windows · Linux
Explore and colonize a vast universe. Discover resources. Build cities. Make spacecraft. Walk aboard them. Operate their controls. Command a crew of NPCs. Lift off. Fly up through the atmosphere to outer space. Land on other worlds, anywhere, not at designated places. Build an empire.
Why similar: Flight 37.3%, Sandbox 21.5%, FPS 20.8%, Space 20.5%
- #47 Interstellar Rift
69% matchMixed68% of 1,666 reviews2020
Dev: Split PolygonPub: Iceberg Interactive
Windows
Median: 4.2 hrsMean: 33.1 hrs≥1hr: 83%
Interstellar Rift is an open world starship simulator with an emphasis on ship construction and multi-player interaction. Survive in a hostile galaxy with your own custom designed and constructed starship. Invite other players to join your crew or fight them across the galaxy!
Why similar: Space Sim 27%, Sandbox 17.9%, Space 17.3%, Open World 15.3%, Sci-fi 10.6%
- #48 Nebula Realms
69% matchMostly Negative38% of 80 reviews2022
Dev: Xaloc Studios S.L.
Windows
Welcome to Nebula Realms! Enjoy your stay in this free to play online 3D interactive world. Socialize, meet new people and become friends. Express your inner self through your fully customizable avatar and your own decorated home, play games and explore this wonderful handcrafted universe.
Why similar: Multiplayer 20.2%, Character Customization 19.8%, Realistic 18.9%, Third Person 16.8%, Open World 10.5%
- #49 Modiverse
68% matchMixed57% of 67 reviews2021
Dev: Deep Voodoo Games
Windows
An open multiplayer sandbox game; includes tools, props, levels, NPCs, character models, game-modes and much more! Make your own using our mod kit!
Why similar: FPS 57%, First-Person 29%, 3D 14%
- #50 Ship Explorer
65% matchVery Positive85% of 140 reviews2025
Dev: Turbine Room StudioPub: Seabank Digital Productions
Windows
You know their stories. Now it's time to step aboard! Board iconic ocean liner and warships from history like SS United States, Morro Castle and more as you explore and learn about the secrets that made them into legends.
Why similar: Sandbox 40%, Realistic 20.7%, First-Person 15.2%, Third Person 15.1%, 3D 9%
- #51 REAL MOON
65% matchMixed68% of 115 reviews2025
Dev: historia Inc.
Windows
Explore a precisely recreated lunar surface built from real data and a JAXA-backed simulation.
Why similar: Space Sim 40.4%, Space 26.8%, Third Person 16.4%, Open World 16.4%
- #52 Frontier Pilot Simulator
67% matchMixed70% of 956 reviews2021
Dev: RAZAR s.r.o.
Windows
Median: 4.2 hrsMean: 9.9 hrs≥1hr: 84%
FPS is a Sci-Fi cargo pilot sim, with an engaging emergent mission-driven storyline, with a real-time economy with free flight and trading, on an alien world to explore. All in customizable upgradeable, well-simulated VTOL craft with real weather, and flight dynamics.
Why similar: Flight 31.4%, Space Sim 18%, Space 16.2%, Open World 9.3%, Third Person 8.3%
- #53 Ocean World: Eden Crafters Prologue
63% matchVery Positive91% of 7,602 reviews2024
Dev: Osaris Games
Windows
Median: 1.3 hrsMean: 3.1 hrs≥1hr: 55%
Survive, craft, and automate in this free prologue set on one of the planets you can transform in Eden Crafters, an open-world game where you play solo or with friends to turn a hostile planet into a habitable haven for humanity.
Why similar: Online Co-Op 18.6%, Sandbox 17.9%, Open World 16.7%, Multiplayer 16.1%, Space 13.7%
