- #1 Avorion
97% matchVery Positive90% of 14,588 reviews2020
Dev: Boxelware
Windows · Mac · Linux
Median: 18.9 hrsMean: 99.6 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: Spaceships 29% ★, Space Sim 23.9%, Space 13.7%, Building 13.7%, Sci-fi 10.9%
Why You'll Like It: Offers an expansive sandbox experience with a robust block-based ship building system that allows for immense creative freedom.
- #2 Space Haven
96% matchVery Positive86% of 11,153 reviews2026
Dev: Bugbyte Ltd.
Windows · Mac · Linux
Median: 4.2 hrsMean: 21.0 hrs≥1hr: 71%
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
Why similar: Space Sim 22.1%, Space 15.1%, Building 14%, Sci-fi 12.3%, Survival 10.2%
Why You'll Like It: Combines modular ship construction with intricate crew management and survival mechanics in a dangerous space environment.
- #3 Reassembly
96% matchVery Positive94% of 4,100 reviews2015
Dev: Anisoptera GamesPub: Indie Voyage
Windows · Mac · Linux
Median: 5.0 hrsMean: 26.1 hrs≥1hr: 84%
A spaceship building and universe-exploration game. Collect resources, expand and grow your fleet, and conquer your personal galaxy. Stellar ambience by Peaks.
Why similar: Building 33.6%, Space 32%, Sci-fi 9.5%, Strategy 8.5%, 2D 5.7%
Why You'll Like It: Features modular, physics-based ship building and tactical combat that closely mirrors the 2D design philosophy of Cosmoteer.
- #4 From the Depths
95% matchVery Positive89% of 12,853 reviews2020
Dev: Brilliant Skies Ltd.
Windows · Mac · Linux
Median: 4.2 hrsMean: 40.8 hrs≥1hr: 81%
Over 1000 unique components allow you to build and command voxel vehicles from the deep ocean to outer space! Forge strategies, allegiances and fleets strong enough to destroy eight deadly factions of the planet and reign supreme. A genre-defying mashup of simulation, building, RTS and RPG.
Why similar: Building 30.8%, Space 22.7%, Survival 16.6%, Multiplayer 13.1%, Strategy 9.6%
Why You'll Like It: Provides an incredibly deep physics-based building system where you design vehicles component-by-component for complex combat scenarios.
- #5 Starship Theory
94% matchMixed50% of 1,143 reviews2026
Dev: Reconnect Software
Windows · Mac · Linux
Median: 7.0 hrsMean: 14.9 hrs≥1hr: 75%
Starship Theory is a ship building survival game. Mine and trade to gather resources. Plan and construct new upgrades. Train and manage crew. Fight to survive.
Why similar: Real-Time with Pause 21.7% ★, Space 21%, Sci-fi 13.2%, Survival 11.9%, Building 8.3%
Why You'll Like It: Focuses on the management of a ship's systems and crew while navigating through hostile space.
- #6 Celestial Command
94% matchMixed62% of 705 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 31.2%, Space Sim 20%, Sci-fi 13.5%, Building 12%, Simulation 8.9%
Why You'll Like It: Features a realistic physics engine where ship construction requires careful consideration of structural integrity and thruster placement.
- #7 HighFleet
93% matchVery Positive88% of 7,447 reviews2021
Dev: Konstantin KoshutinPub: MicroProse Software
Windows
Median: 4.9 hrsMean: 16.7 hrs≥1hr: 77%
Battle for survival in the skies of a mysterious future Earth in this unique action-strategy game mixing arcade combat, exploration, management and diplomacy. As giant flying ships wage spectacular aerial warfare, a prophecy tells of one who will save the world – could it be you?
Why similar: Building 27.7%, Sci-fi 23.5%, Strategy 12.5%, Exploration 10.9%, Simulation 8.7%
Why You'll Like It: Focuses on physics-based ship design and tactical combat where the physical layout of your vessel determines its survival in high-stakes encounters.
- #8 Nimbatus - The Space Drone Constructor
92% matchMostly Positive79% of 2,173 reviews2020
Dev: Stray Fawn StudioPub: Stray Fawn Publishing
Windows · Mac · Linux
Median: 3.1 hrsMean: 5.1 hrs≥1hr: 84%
Command the Nimbatus and craft drones out of hundreds of different parts. Survive unknown threats in a fully destructible, procedural universe, compete against other players in different arenas or enjoy complete creative freedom in the sandbox.
Why similar: Space Sim 27.8%, Space 15.4%, Sci-fi 14.8%, Building 12.1%, Strategy 8.3%
Why You'll Like It: Allows for the creation of complex, modular drones using a variety of parts to solve physics-based challenges.
- #9 Istrolid
91% matchVery Positive87% of 2,696 reviews2016
Dev: treeform
Windows · Mac · Linux
Median: 1.0 hrsMean: 10.9 hrs≥1hr: 50%
In Istrolid you design your own unique spaceships from a large number of parts to fit your strategy and play style. With no set units or factions you are free to create a fleet where each ship has its own balanced strengths and weaknesses, from basic fighters and bombers to hulking battleships and speedy destroyers.
Why similar: Building 30.4%, Space 25.6%, Sci-fi 12.1%, Strategy 11.3%, Multiplayer 10.9%
Why You'll Like It: A tactical strategy game that lets you design your own ships from scratch using modular parts for online fleet battles.
- #10 Stardeus
91% matchVery Positive87% of 1,562 reviews2022
Dev: Kodo LinijaPub: Paradox Arc
Windows · Mac · Linux
Median: 8.6 hrsMean: 22.6 hrs≥1hr: 77%
Stardeus is a deep colony sim set on a broken starship manned by drones and hibernating human survivors. As the AI, have your drones repair your ship, save your crew and travel the stars in this beautiful simulation.
Why similar: Space Sim 26.3%, Space 18.8%, Sci-fi 16.2%, Survival 12.5%, Exploration 8.1%
Why You'll Like It: A colony-sim that takes place on a massive, customizable spaceship where you must manage resources and crew needs.
- #11 Captain Forever Remix
90% matchVery Positive80% of 380 reviews2016
Dev: Pixelsaurus Games
Windows · Mac · Linux
Median: 54 minMean: 3.9 hrs≥1hr: 47%
Can you create the raddest spaceship? Captain Forever Remix is the spaceship builder roguelike. Voyage across the Solar System and blast apart randomly-generated enemies for spare parts. This is an officially-licensed re-imagining of the indie classic Captain Forever.
Why similar: Space 54%, Building 22%, Sci-fi 12.6%, Indie 5.2%, 2D 3.6%
Why You'll Like It: Centers on modular ship construction where you scavenge parts from defeated enemies to grow and improve your own vessel.
- #12 Particle Fleet: Emergence
89% matchVery Positive92% of 1,284 reviews2016
Dev: Knuckle Cracker
Windows · Mac · Linux
Median: 6.9 hrsMean: 24.9 hrs≥1hr: 76%
Build and design your own fleets and stand opposed to the Particulate in this physics/strategy/RTS/fleet hybrid. Build partially destructible and self repairing ships that interact with enemies less controlled by some scripted logic and more driven by a real time massive physics particle simulation.
Why similar: Real-Time with Pause 32.8% ★, Space 21.6%, Strategy 14.3%, Sci-fi 10.9%, Simulation 9.1%
Why You'll Like It: Offers a unique tactical space combat experience that emphasizes fleet positioning and strategic resource management.
- #13 Empyrion - Galactic Survival
89% matchMostly Positive78% of 34,438 reviews2020
Dev: Eleon Game Studios
Windows
Median: 6.2 hrsMean: 77.1 hrs≥1hr: 77%
Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!
Why similar: Space Sim 23.3%, Space 15.8%, Building 15%, Sci-fi 11.5%, Survival 10.3%
Why You'll Like It: Features modular building mechanics that allow you to construct everything from small vessels to massive capital ships.
- #14 The Last Starship
87% matchMostly Positive75% of 1,705 reviews2026
Dev: Introversion Software
Windows · Mac
Median: 6.1 hrsMean: 12.3 hrs≥1hr: 81%
The Last Starship is a 2D space construction game where you design and upgrade your starship. Choose your path: pirate hunter, miner, engineer, spacebus driver, and more, whilst exploring vibrant star systems. Enjoy a growing sandbox world, with regular free updates. Your cosmic adventure awaits!
Why similar: Space Sim 27.7%, Space 16.8%, Building 15.9%, Sci-fi 14.8%, Strategy 6.4%
Why You'll Like It: Allows you to design and manage your own starship, focusing on the technical aspects of ship operation and crew tasks.
- #15 StarMade
88% matchMixed68% of 2,992 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 29.7%, Building 17.8%, Sci-fi 14%, Space Sim 13.4%, Multiplayer 9%
Why You'll Like It: A voxel-based space sandbox that allows for the creation of massive, functional starships with complex internal systems.
- #16 Starship EVO
86% matchVery Positive83% of 1,546 reviews2020
Dev: Moonfire Entertainment
Windows
Median: 1.6 hrsMean: 6.4 hrs≥1hr: 59%
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 21.1%, Building 20.7%, Space Sim 17.5%, Spaceships 11.7% ★, Sci-fi 10.5%
Why You'll Like It: Provides a highly detailed physics-based construction system that allows for complex mechanical designs in space.
- #17 FTL: Faster Than Light
85% matchOverwhelmingly Positive95% of 78,865 reviews2012
Dev: Subset Games
Windows · Mac · Linux
Median: 7.1 hrsMean: 34.2 hrs≥1hr: 89%
This "spaceship simulation roguelike-like" allows you to take your ship and crew on an adventure through a randomly generated galaxy filled with glory and bitter defeat.
Why similar: Space 20.6%, Real-Time with Pause 20.5% ★, Sci-fi 14.4%, Space Sim 13.7%, Difficult 8.9%
Why You'll Like It: The quintessential ship management game that forces players to make difficult tactical decisions during intense space combat.
- #18 Space Engineers
84% matchVery Positive89% of 134,498 reviews2019
Dev: Keen Software House
Windows
Median: 9.0 hrsMean: 96.5 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 27.7%, Space 16.7%, Building 16.4%, Survival 11.1%, Multiplayer 8.2%
Why You'll Like It: A classic in the genre, offering deep physics-based construction and engineering for ships and stations.
- #19 Interstellar Rift
86% matchMixed68% of 1,667 reviews2020
Dev: Split PolygonPub: Iceberg Interactive
Windows
Median: 4.3 hrsMean: 35.6 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 30.2%, Building 16.9%, Space 14.4%, Sci-fi 12%, Survival 9.9%
Why You'll Like It: Focuses on ship design and multi-crew management, requiring players to build functional interiors for their vessels.
- #20 Shortest Trip to Earth
84% matchMostly Positive77% of 1,437 reviews2019
Dev: Interactive Fate
Windows · Linux
Median: 3.2 hrsMean: 6.5 hrs≥1hr: 88%
Shortest Trip to Earth is a roguelike spaceship simulator focused on exploration, ship management and tactical battles. Embark on a perilous journey across the universe with nuclear missiles, armed crew and a cat.
Why similar: Spaceships 27.9% ★, Space Sim 14.2%, Space 13.2%, Sci-fi 11%, Survival 8.4%
Why You'll Like It: A survival-focused ship management game where maintaining your vessel's systems is critical to surviving a long journey.
- #21 Pixel Starships
82% matchMostly Positive73% of 3,020 reviews2023
Dev: SavySoda
Windows · Mac · Linux
Median: 2.2 hrsMean: 24.2 hrs≥1hr: 64%
Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven.
Why similar: Space Sim 29.6%, Space 17.3%, Sci-fi 15.9%, Building 14.8%, Multiplayer 6.3%
Why You'll Like It: A management-heavy strategy game where ship layout and crew placement are vital for winning battles.
- #22 Dimensions: Dreadnought Architect
83% matchMixed54% of 204 reviews2023
Dev: Craft Theory
Windows
Unleash your creativity, design your dreadnought with a variety of modules, and have complete control over the function and style of each module. Command your battleship with wisdom and decisiveness. Gallop in the vast galaxy and destroy all enemies.
Why similar: Spaceships 43.2% ★, Building 16.7%, Space Sim 15.6%, Space 11.5%, Multiplayer 4.3%
Why You'll Like It: A roguelite that emphasizes modular spaceship design and tactical combat in a procedurally generated galaxy.
- #23 Void Destroyer 2
82% matchVery Positive80% of 675 reviews2020
Dev: Iteration 11
Windows
Median: 2.8 hrsMean: 15.3 hrs≥1hr: 74%
Start with nothing... End with everything! All you have is a basic ship, barely fit for combat, with it you'll start your journey and empire. A open world space sandbox, inspired by and expanding the classics.
Why similar: Space Sim 34.6%, Space 17.8%, Sci-fi 15.2%, Building 14.8%, Strategy 6.9%
Why You'll Like It: Blends ship building, fleet command, and action-oriented space combat into a cohesive strategy experience.
- #24 Sins of a Solar Empire II
80% matchVery Positive84% of 8,792 reviews2024
Dev: Ironclad Games CorporationPub: Stardock Entertainment
Windows
Median: 9.5 hrsMean: 32.8 hrs≥1hr: 85%
Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
Why similar: Space 43.2%, Sci-fi 24.6%, Strategy 14.6%, Multiplayer 12.8%, Singleplayer 4.9%
Why You'll Like It: A grand-scale space strategy game that focuses on fleet composition and large-scale tactical warfare.
- #25 Ostranauts
79% matchMostly Positive77% of 3,288 reviews2026
Dev: Blue Bottle GamesPub: Kitfox Games
Windows
Median: 6.8 hrsMean: 32.6 hrs≥1hr: 73%
Navigate your scrappy ship through the boneyard in search of valuable parts in abandoned vessels. Use salvage to upgrade your ship, or sell it for cash to pay down your mounting debt, or restock fuel, air, or food. Fly and role-play aboard your dream spaceship in this hardcore noir space-sim.
Why similar: Space Sim 23.3%, Spaceships 20% ★, Space 13.5%, Difficult 11.3%, Survival 9%
Why You'll Like It: A detailed space-sim that requires players to manage the complex, often failing, systems of their salvaged ships.
- #26 X4: Foundations
81% matchMostly Positive80% of 30,300 reviews2018
Dev: Egosoft
Windows · Linux
Median: 4.9 hrsMean: 95.4 hrs≥1hr: 80%
Your journey to building a vast space empire begins behind the controls of a single ship. Explore, trade, fight, and build as you rise to command fleets, stations, and entire economies in a living, fully simulated universe that reacts to every decision.
Why similar: Space Sim 34.6%, Space 23%, Sci-fi 17.9%, Exploration 7.7%, Strategy 7.3%
Why You'll Like It: Offers a deep simulation of space life, including ship customization and complex economic management.
- #27 Space Pirates And Zombies 2
81% matchMostly Positive79% of 2,842 reviews2017
Dev: MinMax Games Ltd.
Windows · Mac · Linux
Median: 4.5 hrsMean: 13.4 hrs≥1hr: 81%
Design and then improve the ultimate mothership. Explore a persistent living galaxy populated by 200 unique captains that can do everything you can do. Survive the zombie infection and then fight them back. Make allies and start your own faction. Build your empire. Also includes Sandbox Mode.
Why similar: Space 36.3%, Sci-fi 12.6%, Strategy 10.9%, Building 10%, Survival 7.7%
Why You'll Like It: Features a modular ship building system where you can customize your vessel to suit different combat styles.
- #28 Dyson Sphere Program
78% matchOverwhelmingly Positive97% of 91,831 reviews2021
Dev: Youthcat StudioPub: Gamirror Games
Windows
Median: 13.0 hrsMean: 76.0 hrs≥1hr: 84%
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.
Why similar: Space 29.1%, Building 22%, Space Sim 18.1%, Sci-fi 17%, Simulation 5.9%
Why You'll Like It: While more focused on logistics, it offers a grand sense of scale and building that appeals to fans of space-based construction.
- #29 Space Engineers 2
77% matchMostly Positive75% of 5,654 reviews2025
Dev: Keen Software House
Windows
Median: 2.0 hrsMean: 11.6 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 Sim 20.3%, Building 17.2%, Space 17.1%, Sci-fi 14.5%, Survival 11.3%
- #30 Starminer
76% matchMostly Positive73% of 1,894 reviews2026
Dev: CoolAndGoodGames
Windows
Median: 7.0 hrsMean: 26.4 hrs≥1hr: 82%
Design and build a massive interstellar fleet in this simulation sandbox. Strip space of its minerals for profit, but stay alert: your greed attracts the alien. Master deep base-building and deploy warships to protect your empire in immersive real-time space.
Why similar: Spaceships 37.3% ★, Space Sim 27.6%, Space 15.7%, Sci-fi 14%, Exploration 5.5%
- #31 Starmancer
79% matchMixed62% of 1,053 reviews2021
Dev: Ominux GamesPub: Chucklefish
Windows · Mac · Linux
Median: 1.6 hrsMean: 6.6 hrs≥1hr: 65%
From a small 2-man team comes a unique space station management sim. Take on the role of an A.I commanding a lost space ark. Try not to let your crew run amok and wreck the place.
Why similar: Space 16.9%, Building 16.1%, Sci-fi 15.8%, Survival 9.9%, Space Sim 7.7%
Why You'll Like It: Focuses on the management of a space station and its crew, emphasizing the construction and maintenance of vital systems.
- #32 Crying Suns
78% matchVery Positive86% of 4,555 reviews2019
Dev: Alt Shift
Windows · Mac
Median: 4.3 hrsMean: 7.5 hrs≥1hr: 93%
Crying Suns is a tactical rogue-lite that puts you in the role of a space fleet commander as you explore a mysteriously fallen empire. In this story rich experience inspired by Dune and Foundation, each successful run will uncover the truth about the Empire... and yourself as well.
Why similar: Real-Time with Pause 38.8% ★, Space 20.4%, Sci-fi 16.3%, Strategy 8.2%, Pixel Graphics 6.8%
Why You'll Like It: A tactical space game that emphasizes fleet management and strategic decision-making during combat.
- #33 eXoSpace Combat Engineer
76% matchVery Positive87% of 125 reviews2026
Dev: Fantastimaker
Windows
Snap, rotate and launch your own warship in minutes, then pilot it into bullet-hell boss fights to hunt the galaxy's supervillains. Master intuitive engineering, evolve from drone to dreadnought, and use the fully gridless designer to build anything you can imagine!
Why similar: Spaceships 32.9% ★, Space Sim 18%, Building 11.9%, Space 11.3%, Sci-fi 10.3%
- #34 Stationeers
77% matchVery Positive88% of 9,306 reviews2017
Dev: RocketWerkz
Windows
Median: 9.8 hrsMean: 85.8 hrs≥1hr: 85%
Stationeers puts you in control of the construction and management of a space station to run by yourself or online with your friends. Complex atmospheric, electrical, manufacturing, agriculture, and gravitational systems require your thought and management at all times!
Why similar: Space 24.6%, Building 24.6%, Sci-fi 21.6%, Survival 17.3%, Multiplayer 11.8%
- #35 ERA ONE
74% matchVery Positive87% of 1,615 reviews2025
Dev: Team Complex LTD
Windows
Median: 4.4 hrsMean: 16.4 hrs≥1hr: 68%
Start with your Command Center and expand it into a colossal modular flagship, module by module. Design custom warships from the ground up, grow a thriving civilization, and command powerful fleets across the Solar System in tactical real-time battles.
Why similar: Space 28.4%, Sci-fi 20.2%, Online Co-Op 17.1%, Exploration 10.6%, Multiplayer 10.2%
- #36 NEBULOUS: Fleet Command
75% matchVery Positive81% of 4,440 reviews2022
Dev: Eridanus IndustriesPub: Hooded Horse
Windows
Median: 4.9 hrsMean: 31.7 hrs≥1hr: 77%
Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other.
Why similar: Real-Time with Pause 61.6% ★, Multiplayer 14.2%, Strategy 10.9%, Simulation 8.6%, Singleplayer 4.6%
- #37 Void Crew
73% matchVery Positive86% of 8,473 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 35.1%, Space 14.7%, Sci-fi 11.9%, Online Co-Op 11.4%, Multiplayer 10%
- #38 Starcom: Unknown Space
73% matchVery Positive92% of 4,500 reviews2024
Dev: Wx3 Labs, LLC
Windows
Median: 8.4 hrsMean: 17.0 hrs≥1hr: 83%
Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.
Why similar: Space Sim 29.5%, Space 26.4%, Sci-fi 13.9%, Building 10.8%, Exploration 8%
- #39 Out of Orbit
74% matchVery Positive79% of 179 reviews2023
Dev: Case Yellow Labs
Windows
Design, build, or pirate spaceships. Build bases on planets. Explore endless randomly generated universes, travel through black holes, command your crew, survive cosmic events, collect and trade materials, battle epic bosses, and much more. The sky is the limit, literally!
Why similar: Spaceships 45.2% ★, Space 16.1%, Survival 10.9%, Strategy 5.3%, Exploration 4.7%
- #40 Starbase
75% matchMixed55% of 6,768 reviews2021
Dev: Frozenbyte
Windows
Median: 14.2 hrsMean: 91.5 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 33.2%, Building 20.6%, Space 17.4%, Sci-fi 14.1%, Simulation 5.4%
- #41 Executive Assault 2
73% matchVery Positive83% of 1,767 reviews2023
Dev: Hesketh Studios Ltd
Windows · Mac
Median: 3.7 hrsMean: 8.1 hrs≥1hr: 76%
The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.
Why similar: Space Sim 33.9%, Building 19.8%, Space 16.9%, Sci-fi 11.8%, Multiplayer 7.6%
- #42 Hardspace: Shipbreaker
71% matchVery Positive89% of 22,441 reviews2022
Dev: Blackbird Interactive
Windows
Median: 4.7 hrsMean: 24.0 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 28.3%, Space Sim 23.4%, Sci-fi 23.1%, Building 9.1%, Simulation 7.6%
- #43 Space Architect
72% matchMostly Positive74% of 309 reviews2024
Dev: Albert WiatrPub: PlayWay S.A.
Windows
Design your dream space station in Space Architect! Master the power of automation or 'hire' an army of crewmates to handle your ever-growing production. Mine asteroids, fabricate goods, and engage in interstellar trade to pay off the menacing Big Evil Corp. Will you thrive in the vastness of space?
Why similar: Building 22.2%, Sci-fi 20.7%, Space 17.2%, Survival 16.2%, Strategy 9.2%
- #44 Airships: Conquer the Skies
71% matchOverwhelmingly Positive96% of 6,626 reviews2018
Dev: David Stark
Windows · Mac · Linux
Median: 6.3 hrsMean: 37.3 hrs≥1hr: 79%
Construct mighty steampunk airships and fly them into battle, waging war and conquering the skies!
Why similar: Building 53.1%, Multiplayer 23.4%, Strategy 13%, 2D 10.5%
- #45 Keplerth
70% matchVery Positive84% of 4,170 reviews2022
Dev: TAROPub: Gamirror Games
Windows
Median: 7.9 hrsMean: 16.3 hrs≥1hr: 85%
Welcome to Keplerth! Try to survive on a hostile alien planet in this 2D sandbox RPG, where you can choose to live alone or fight side by side with your friends in the online multiplayer mode. Survive, build, farm, fight, and explore your way to victory in this open-world adventure!
Why similar: Building 23.8%, Sci-fi 20.1%, Survival 17.5%, Exploration 10.4%, Multiplayer 8.6%
- #46 Starcom: Nexus
71% matchVery Positive90% of 2,322 reviews2019
Dev: Wx3 Labs, LLC
Windows · Linux
Median: 4.0 hrsMean: 13.5 hrs≥1hr: 85%
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 33%, Space Sim 22.3%, Sci-fi 19.6%, Building 8.6%, Exploration 8%
- #47 Between the Stars
70% matchMostly Positive74% of 2,502 reviews2024
Dev: Isolated Games
Windows
Median: 2.5 hrsMean: 6.4 hrs≥1hr: 72%
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 29.8%, Space 27.1%, Sci-fi 13.5%, Strategy 7.3%, Simulation 6.8%
- #48 SpaceCraft
69% matchMixed64% of 2,773 reviews2026
Dev: Shiro Games
Windows
Median: 14.0 hrsMean: 54.1 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 31.8%, Space 21.9%, Sci-fi 19.2%, Multiplayer 10.2%, Exploration 7.6%
- #49 PULSAR: Lost Colony
69% matchVery Positive90% of 5,738 reviews2021
Dev: Leafy Games
Windows · Mac · Linux
Median: 7.3 hrsMean: 16.6 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: Spaceships 30.5% ★, Space Sim 23%, Space 12.4%, Sci-fi 10.8%, Online Co-Op 7.4%
- #50 Outworld Station
67% matchVery Positive85% of 859 reviews2026
Dev: Trickjump Games Ltd
Windows
Median: 3.5 hrsMean: 10.5 hrs≥1hr: 69%
Take the helm as a new Station Commander and exploit an alien star system in this stunning space-station factory automation game. Amass resources and construct starships using increasingly advanced manufacturing and expand your station in a hostile universe.
Why similar: Space 35.5%, Sci-fi 20.8%, Online Co-Op 14.5%, Simulation 9.8%, Strategy 9.8%
- #51 Endless Sky
70% matchVery Positive92% of 7,114 reviews2015
Dev: Michael Zahniser
Windows · Mac · Linux
Median: 1.0 hrsMean: 13.7 hrs≥1hr: 50%
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
Why similar: Space 40.6%, Space Sim 20%, Sci-fi 17.2%, Simulation 4.8%, Exploration 4.5%
- #52 Void War
65% matchVery Positive94% of 4,044 reviews2025
Dev: Tundra
Windows
Median: 7.7 hrsMean: 16.3 hrs≥1hr: 84%
Command an ancient starship and fight your way to the heart of a dying Empire. Fend off attacks from demented cultists, craven space pirates, and xenophobic Imperial soldiers. Discover powerful artifacts and use them to build your ship into a fearsome war engine.
Why similar: Real-Time with Pause 34% ★, Space 19.9%, Difficult 14%, Sci-fi 12.8%, Strategy 6.2%
- #53 Desynced
66% matchMostly Positive80% of 2,067 reviews2026
Dev: Stage Games Inc.Pub: Forklift Interactive
Windows
Median: 4.4 hrsMean: 18.9 hrs≥1hr: 77%
Desynced is a sci-fi strategy game with fully customizable units and behaviors. Gather, build, research, and explore the unknown. Alone or with friends, unveil the mystery of an AI on the edge of self-awareness and uncover the hidden truth in this blend of strategy, automation, and exploration.
Why similar: Building 20.8%, Sci-fi 19.8%, Survival 14.2%, Online Co-Op 11.1%, Multiplayer 11%
- #54 Spaceflight Simulator
66% matchOverwhelmingly Positive97% of 9,809 reviews2022
Dev: Team Curiosity ✦
Windows · Mac
Median: 5.3 hrsMean: 15.3 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 30.4%, Spaceships 22.2% ★, Space 17.4%, Building 7.6%, Exploration 5.7%
- #55 Approximately Up
64% matchVery Positive94% of 1,121 reviews2026
Dev: Approximately Games
Windows
Median: 12.9 hrsMean: 33.7 hrs≥1hr: 89%
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 55.5%, Multiplayer 12.2%, Exploration 9.2%, Simulation 9.1%, Adventure 5.9%
- #56 Stellar Warfare
68% matchVery Positive82% of 434 reviews2021
Dev: Tense Games
Windows
Median: 42 minMean: 2.8 hrs≥1hr: 45%
Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!
Why similar: Space 31.8%, Sci-fi 26.4%, Multiplayer 12.4%, Strategy 11.3%, Simulation 9.4%
- #57 Solar Expanse - Space Exploration Manager
64% matchVery Positive87% of 1,372 reviews2026
Dev: SpaceOpsPub: Games Operators
Windows
Median: 4.6 hrsMean: 16.0 hrs≥1hr: 75%
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 29.2%, Space 22.6%, Sci-fi 15.5%, Building 10.5%, Simulation 6.3%
- #58 Kinetic Void
72% matchOverwhelmingly Negative17% of 1,558 reviews2014
Dev: Badland Studio
Windows · Mac · Linux
Median: 1.9 hrsMean: 3.6 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 40%, Sci-fi 17.7%, Space Sim 14.2%, Building 10.8%, Simulation 9.6%
- #59 Down with the Ship
64% matchVery Positive93% of 856 reviews2026
Dev: Iron Anchor GamesPub: Proxy Studios
Windows · Mac
Strategic auto battler where you design a heavily-armed spaceship. Draft 200+ items, outfit your hull, and unleash it in async PvP. Blend captains and factions for absurd combos and galactic domination. Roll, buy, place, pray.
Why similar: Space 36%, Sci-fi 28.8%, Multiplayer 17.5%, Strategy 12.5%, 2D 5.3%