- #1 Executive Assault
97% matchVery Positive85% of 1,457 reviews2015
Dev: Hesketh Studios Ltd
Windows
Median: 3.4 hrsMean: 7.0 hrs≥1hr: 79%
Executive Assault is an indie real-time strategy/first-person shooter where you can not only build your base and create armies, but also take control of your units and fight as one of them.
Why similar: RTS 26.8%, Real-Time 16.8% ★, Base Building 9.8%, FPS 9.3%, Strategy 7.4%
Why You'll Like It: As the direct predecessor, it offers the same core RTS and FPS hybrid gameplay loop in a space setting.
- #2 Battlezone: Combat Commander
96% matchVery Positive90% of 945 reviews2018
Dev: Big Boat InteractivePub: Rebellion
Windows
Median: 3.1 hrsMean: 6.0 hrs≥1hr: 81%
Battlezone: Combat Commander remasters FPS-RTS classic Battlezone II with slick new visuals, brand new achievements, Steam Workshop support and much more! The solar system is at war. Take command.
Why similar: Real-Time 24.6% ★, RTS 23.6%, Strategy 10.9%, FPS 8.8%, Space 8%
Why You'll Like It: A classic title that pioneered the RTS and FPS hybrid genre, focusing on commanding units while piloting a vehicle.
- #3 Silica
96% matchMostly Positive76% of 4,831 reviews2023
Dev: Martin 'Dram' MelichárekPub: Bohemia Interactive
Windows
Median: 3.1 hrsMean: 8.6 hrs≥1hr: 75%
Silica blends FPS and RTS in epic, photorealistic battles. Choose to fight on the ground or command from above as humans or aliens. Dive into thrilling multiplayer combat or master strategic command. Are you ready to survive and conquer?
Why similar: RTS 36.6%, FPS 15.3%, Multiplayer 9.5%, Strategy 8.3%, Sci-fi 7.8%
Why You'll Like It: This game perfectly captures the RTS and FPS hybrid experience by allowing players to command armies or fight on the ground as a soldier.
- #4 Sins of a Solar Empire II
95% matchVery Positive84% of 8,475 reviews2024
Dev: Ironclad Games CorporationPub: Stardock Entertainment
Windows
Median: 9.5 hrsMean: 30.9 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: RTS 26.7%, Real-Time 19.7% ★, Space 17.8%, Base Building 9%, Strategy 7.9%
Why You'll Like It: Offers a grand-scale space RTS experience with complex fleet management and 4X strategy elements.
- #5 Carrier Command 2
94% matchVery Positive82% of 3,716 reviews2021
Dev: GeometaPub: MicroProse Software
Windows · Mac
Median: 9.4 hrsMean: 15.6 hrs≥1hr: 92%
Carrier Command 2 is the real-time strategy game that puts you in command of a futuristic carrier capable of deploying a vast array of aircraft and amphibious units. Compete against AI or human players and hop into every single vehicle to take matters into your own hands!
Why similar: RTS 43.3%, War 20.7%, Real Time Tactics 17.1%, Strategy 11.7%, First-Person 7.2%
Why You'll Like It: It emphasizes the strategic management of a carrier while allowing for direct control of individual units and vehicles in a tactical environment.
- #6 Planetary Annihilation: TITANS
94% matchVery Positive84% of 14,598 reviews2015
Dev: Planetary Annihilation Inc
Windows · Mac · Linux
Median: 3.9 hrsMean: 17.6 hrs≥1hr: 73%
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
Why similar: RTS 26.1%, Base Building 11.8%, Building 9.8%, Real Time Tactics 8.1%, War 8%
Why You'll Like It: Features massive-scale RTS combat across multiple planets, mirroring the scale and base-building focus of the seed game.
- #7 Space Reign
93% matchMostly Positive74% of 453 reviews2026
Dev: Propulsive Games
Windows
An indie space-sim and strategy game featuring ship and fleet combat mixed with RTS elements. Complete contracts and Claim sectors for your faction in the near-future, where resource exploiting corporations are in a state of constant conflict over territory control.
Why similar: Space Sim 28.1%, RTS 16.9%, Action RTS 12.4% ★, Space 11.1%, Real Time Tactics 9.5%
Why You'll Like It: Focuses on space fleet management and tactical combat with a strong emphasis on ship customization and simulation.
- #8 NEBULOUS: Fleet Command
92% matchVery Positive81% of 4,297 reviews2022
Dev: Eridanus IndustriesPub: Hooded Horse
Windows
Median: 5.1 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: RTS 34.4%, War 18.1%, Space 16.2%, Multiplayer 10%, Co-op 10%
Why You'll Like It: Provides deep, tactical space fleet combat that focuses on realistic sensor management and ship-to-ship maneuvering.
- #9 Cosmoteer: Starship Architect & Commander
91% matchVery Positive94% of 12,715 reviews2022
Dev: Walternate Realities
Windows
Median: 19.5 hrsMean: 41.2 hrs≥1hr: 92%
Design and simulate the starships of your dreams! Command your ship or fleet in epic battles and manage your crew while exploring a dangerous galaxy. Play alone or with friends, test your ships in online PvP, and let your imagination reach for the stars!
Why similar: Space Sim 34%, Building 19.7%, Space 16.7%, Sci-fi 11.7%, Multiplayer 7.7%
Why You'll Like It: Combines intricate ship building with real-time tactical combat, appealing to the construction and design aspects of the seed game.
- #10 Dust Fleet
91% matchMostly Positive76% of 222 reviews2023
Dev: Orbiting DiscoPub: indie.io
Windows
Assume command of a battle fleet and deploy immediately to the Dust Zone, commander. Our main food supply station has gone dark and the United Earth Nations (UEN) needs to know why in this 4X RTS space sim. Manage your ships, control space stations, and watch your back.
Why similar: Real-Time 29.6% ★, Space Sim 22.7%, Space 11.7%, Real Time Tactics 9.9%, RTS 8%
Why You'll Like It: A space-based RTS that emphasizes fleet management and tactical decision-making in a sci-fi setting.
- #11 Homeworld Remastered Collection
90% matchVery Positive88% of 14,093 reviews2015
Dev: Gearbox SoftwarePub: Gearbox Publishing
Windows · Mac
Median: 4.7 hrsMean: 34.4 hrs≥1hr: 85%
Experience the epic space strategy games that redefined the RTS genre. Control your fleet and build an armada across more than 30 single-player missions. Choose unit types, fleet formations and flight tactics for each strategic situation.
Why similar: RTS 44.2%, Space 28.6%, Strategy 11.4%, Sci-fi 9.5%, Multiplayer 5.2%
Why You'll Like It: The definitive space RTS experience, focusing on 3D fleet movement and tactical positioning.
- #12 Ashes of the Singularity: Escalation
89% matchMostly Positive74% of 4,961 reviews2016
Dev: Stardock Entertainment
Windows
Median: 3.2 hrsMean: 7.2 hrs≥1hr: 89%
A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat.
Why similar: RTS 26.9%, Base Building 16.6%, Real Time Tactics 10.8%, Building 10.7%, Robots 7.8%
Why You'll Like It: A large-scale RTS that focuses on massive armies and base-building, similar to the tactical combat found in the seed game.
- #13 Supreme Commander 2
89% matchVery Positive88% of 12,900 reviews2010
Dev: Gas Powered GamesPub: Square Enix
Windows
Median: 7.6 hrsMean: 31.2 hrs≥1hr: 76%
Includes 47 Steam achievements, leaderboards, and stats!
Why similar: RTS 33.8%, Real-Time 16.5% ★, Base Building 11.7%, Strategy 10.3%, Robots 7.2%
Why You'll Like It: Known for its massive scale and focus on base-building and unit production, which aligns with the RTS roots of the seed game.
- #14 Starbase
88% matchMixed56% of 6,734 reviews2021
Dev: Frozenbyte
Windows
Median: 14.3 hrsMean: 91.4 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 35.2%, Building 19.1%, Space 13.5%, FPS 8.8%, Robots 7.7%
Why You'll Like It: A massive space-sim that allows for deep ship building and open-world exploration, appealing to the creative side of base-building.
- #15 BattleGroupVR
86% matchVery Positive92% of 946 reviews2023
Dev: SpaceOwl Games
Windows · Linux
Median: 1.6 hrsMean: 4.3 hrs≥1hr: 60%
BattleGroupVR is a first person real-time space strategy where you lead a fleet of powerful warships into battle from the bridge of your own flagship. Assemble your fleet, upgrade your load-outs, train your captains, engage the enemy and secure the sector. Try not to go down with the ship.
Why similar: Space Sim 21.7%, RTS 16.6%, Real-Time 16.2% ★, Space 9.3%, Real Time Tactics 6.5%
Why You'll Like It: Offers a VR-focused space fleet command experience that brings a unique perspective to tactical space combat.
- #16 Stellar Warfare
87% matchVery Positive83% of 419 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: RTS 27.2%, Base Building 15%, Space 13.3%, War 12.2%, Real Time Tactics 10.5%
Why You'll Like It: An indie space RTS that focuses on ship customization and large-scale fleet battles.
- #17 X4: Foundations
86% matchMostly Positive80% of 29,356 reviews2018
Dev: Egosoft
Windows · Linux
Median: 5.0 hrsMean: 94.8 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 45.6%, Space 22.6%, Sci-fi 10%, Strategy 9.2%, First-Person 6.9%
Why You'll Like It: Provides a deep space simulation experience where you can manage fleets and stations while piloting ships yourself.
- #18 Tempest Rising
82% matchVery Positive88% of 11,543 reviews2025
Dev: Slipgate Ironworks™Pub: 3D Realms
Windows
Median: 3.8 hrsMean: 9.7 hrs≥1hr: 84%
Command distinct factions in a desperate struggle for power and resources in Tempest Rising - a classic RTS set on Earth after a nuclear war.
Why similar: RTS 53.3%, Strategy 12.1%, Base Building 11.6%, Real-Time 10.6% ★, Action RTS 3.9% ★
Why You'll Like It: A classic-style RTS that focuses on base-building and resource management in a sci-fi setting.
- #19 Deep Space Battle Simulator
84% matchMostly Positive78% of 411 reviews2021
Dev: yeswecamp
Windows · Linux
Median: 42 minMean: 3.7 hrs≥1hr: 37%
Two teams of players control their capital ship in an epic battle. Customize your ship, control its movement, weapons, and energy distribution or go to one of the hangars to join the battle in a smaller fighter!
Why similar: Space Sim 27.9%, RTS 21.7%, Space 11.4%, FPS 7.5%, Multiplayer 6.8%
Why You'll Like It: Focuses on the action-oriented side of space combat, allowing players to manage and fight on capital ships.
- #20 Grey Goo
85% matchMixed68% of 4,322 reviews2015
Dev: PetroglyphPub: Six Foot
Windows
Median: 5.2 hrsMean: 8.8 hrs≥1hr: 90%
Fight for control of a frontier world. Gather resources, build your base, and command your forces in battle. Survive long enough to unleash your ultimate weapon - THE EPIC.
Why similar: RTS 45.6%, Base Building 13.1%, Strategy 11.4%, Sci-fi 8.5%, Robots 6.8%
Why You'll Like It: A traditional RTS with a strong emphasis on base-building and distinct faction mechanics.
- #21 Void Destroyer 2
84% matchVery Positive80% of 672 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 34.2%, RTS 22.7%, Space 12.9%, Building 12.9%, Strategy 6.6%
Why You'll Like It: Blends space simulation with RTS elements, allowing players to command fleets while engaging in dogfights.
- #22 Sins of a Solar Empire®: Rebellion
83% matchVery Positive93% of 16,301 reviews2012
Dev: Ironclad Games CorporationPub: Stardock Entertainment
Windows
Median: 4.9 hrsMean: 16.6 hrs≥1hr: 86%
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
Why similar: Space Sim 25.7%, RTS 22.7%, Base Building 14.6%, Space 11.3%, Co-op 6.7%
Why You'll Like It: A staple of the space RTS genre that offers deep diplomacy and fleet management.
- #23 ERA ONE
81% matchVery Positive87% of 1,490 reviews2025
Dev: Team Complex LTD
Windows
Median: 3.8 hrsMean: 15.7 hrs≥1hr: 68%
Era One is an innovative space game that combines elements of real-time strategy, base building, space survival, and tactical battles. Players can create and customize their bases from scratch, construct various types of structures and warships, manage fleets, and engage in tactical space battles.
Why similar: RTS 26.5%, Action RTS 20.9% ★, Base Building 15.8%, Space 14%, Real Time Tactics 12.2%
Why You'll Like It: An action-RTS hybrid that emphasizes exploration and real-time tactical combat in space.
- #24 SpaceBourne 2
79% matchMostly Positive76% of 5,095 reviews2025
Dev: Burak Dabak
Windows
Median: 2.4 hrsMean: 11.1 hrs≥1hr: 71%
Embark on a journey to greatness. Get ready for adrenaline-fueled battles and a chance to claim your place in the galaxy. Grab the controls of your ship, gear up for the fight, and unleash your ambition to conquer and build a new empire in the vastness of space.
Why similar: Space Sim 38.2%, Base Building 20.1%, Space 12.7%, Building 11.4%, War 8.2%
Why You'll Like It: An open-world space RPG that includes base-building and fleet management elements.
- #25 Rogue Command
78% matchVery Positive90% of 926 reviews2026
Dev: feneq
Windows
Median: 3.7 hrsMean: 15.4 hrs≥1hr: 69%
True RTS gameplay reinforced with roguelite build crafting. Control units with bullet-time precision. Call down bases and raise armies. Drafted from a different arsenal every run. Weave builds that break the game. Or the game breaks you.
Why similar: RTS 25.3%, Action RTS 18.2% ★, Base Building 15.4%, Building 13.4%, Space 11.4%
Why You'll Like It: A roguelite RTS that focuses on fast-paced tactical combat and base-building.
- #26 Earth 2160
82% matchMostly Positive73% of 1,558 reviews2006
Dev: Reality Pump StudiosPub: Topware Interactive
Windows · Mac · Linux
Median: 4.9 hrsMean: 9.8 hrs≥1hr: 93%
After the destruction of the EARTH in 2150, the leaders of the Eurasian Dynasty escaped on board an evacuation fleet. Now they are fighting for the survival of the human species. Their base is one large building comprising of smaller variable parts.
Why similar: Real-Time 36.4% ★, RTS 25.6%, Base Building 16.8%, Space 12.8%, Strategy 6%
Why You'll Like It: A classic RTS featuring modular base-building and unit customization that feels familiar to fans of the genre.
- #27 Final Upgrade
80% matchMostly Positive77% of 457 reviews2022
Dev: TaosX
Windows
Median: 4.2 hrsMean: 12.2 hrs≥1hr: 69%
Help humanity to spread throughout the cosmos by exploring new worlds, building space factories and setting up trade routes. Research advanced technologies to increase efficiency and unlock new paths of development. Fight off other artificial intelligences in your goal to reach the Final Upgrade!
Why similar: Space Sim 22.3%, Base Building 16.8%, Building 14.5%, Space 13.2%, RTS 11.1%
Why You'll Like It: Focuses on automation and space-based resource management, appealing to the building aspect of the seed game.
- #28 Outlive 25
78% matchVery Positive95% of 247 reviews2026
Dev: Continuum EntertainmentPub: CriticalLeap
Windows
Build your base, prepare your troops, and face your most epic battle yet in this old-school real-time strategy game. Choose between two factions, test your skills in three epic campaigns and engage in online battles with up to 16 players simultaneously.
Why similar: RTS 25.5%, Space Sim 21.9%, Base Building 11.9%, Building 9.9%, Space 6.4%
Why You'll Like It: A retro-inspired RTS that focuses on base-building and futuristic warfare.
- #29 Starminer
76% matchMostly Positive75% of 1,757 reviews2026
Dev: CoolAndGoodGames
Windows
Median: 6.3 hrsMean: 13.6 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: Space Sim 36.4%, RTS 25%, Base Building 15.6%, Space 15.1%, Sci-fi 7.8%
- #30 Annihilate The Spance
76% matchVery Positive91% of 354 reviews2025
Dev: Skyglow Softworks
Windows
An RTS base builder with huge battles, constant production, and autonomous ships. The Spance approaches, a vast and mysterious storm at the edge of humanity. Who shall claim its riches? Brave the perils of the depths in a story-rich singleplayer campaign with numerous distinct factions and bosses.
Why similar: RTS 26.1%, Base Building 18.5%, Space 13.5%, Building 13.5%, War 9.4%
- #31 Space Engineers 2
75% matchMostly Positive75% of 4,798 reviews2025
Dev: Keen Software House
Windows
Median: 1.4 hrsMean: 8.1 hrs≥1hr: 60%
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 33.8%, Building 24.8%, Space 20.6%, Sci-fi 10.3%, Strategy 8.1%
- #32 Celestial Command
79% matchMixed62% of 701 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 32.6%, Space Sim 28.8%, Building 15.2%, Strategy 10.6%, Sci-fi 8.3%
Why You'll Like It: A space simulation game that emphasizes realistic physics and ship construction.
- #33 Sins of a Solar Empire: Trinity®
77% matchMostly Positive77% of 814 reviews2011
Dev: Ironclad Games CorporationPub: Stardock Entertainment
Windows
Median: 2.0 hrsMean: 30.8 hrs≥1hr: 59%
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
Why similar: Real-Time 23.9% ★, Space Sim 18.5%, RTS 16.4%, Base Building 10.4%, Building 8.6%
- #34 Void Destroyer
77% matchMixed59% of 352 reviews2015
Dev: Iteration 11
Windows
Median: 18 minMean: 3.3 hrs≥1hr: 30%
Combining the best of space combat and real time strategy. Victory can be tactical, a dogfight or capital ship slugging match - depending on how you decide to achieve it. Space combat on a RTS scale with space sim savagery.
Why similar: RTS 27.1%, Space 24%, Space Sim 20.6%, Strategy 14.6%, Sci-fi 8.2%
- #35 Interstellar Rift
74% matchMixed68% of 1,663 reviews2020
Dev: Split PolygonPub: Iceberg Interactive
Windows
Median: 4.2 hrsMean: 33.4 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 45.1%, Building 22.1%, Space 15.8%, Sci-fi 7.6%, First-Person 6.3%
- #36 Empyrion - Galactic Survival
72% matchMostly Positive78% of 34,271 reviews2020
Dev: Eleon Game Studios
Windows
Median: 6.3 hrsMean: 76.9 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 29.4%, Building 16.7%, Space 14.7%, FPS 9.7%, Co-op 9.7%
- #37 Istrolid
73% matchVery Positive87% of 2,693 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 27.8%, RTS 25.7%, Space 19.6%, Strategy 11.4%, Multiplayer 9.1%
- #38 StarMade
74% matchMixed68% of 2,989 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 30.1%, Building 21.4%, Space Sim 18.5%, Multiplayer 9.9%, Sci-fi 8.2%
- #39 Reassembly
72% matchVery Positive94% of 4,079 reviews2015
Dev: Anisoptera GamesPub: Indie Voyage
Windows · Mac · Linux
Median: 5.1 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 40.6%, Space 32.5%, Strategy 11.4%, Sci-fi 5.5%, Action 4.3%
- #40 Rusted Warfare - RTS
71% matchOverwhelmingly Positive96% of 7,364 reviews2017
Dev: Corroding Games
Windows · Mac · Linux
Median: 5.3 hrsMean: 33.5 hrs≥1hr: 78%
{{An RTS inspired by the classics of the past!}} Making up for it's subpar retro graphics with fun gameplay and modern multi-threaded tech enabling huge battles to run smooth... Featuring singleplayer challenges, skirmish, sandbox, 10-player multiplayer & workshop modding.
Why similar: RTS 40%, Real-Time 19.2% ★, Base Building 15.7%, Strategy 7.4%, Multiplayer 4.8%
- #41 Forged Battalion
73% matchMixed58% of 1,111 reviews2018
Dev: Petroglyph
Windows
Median: 1.0 hrsMean: 4.7 hrs≥1hr: 50%
Customize your unique faction in a new take on real-time strategy as you fight in a variety of skirmish, solo, and multiplayer battles. You are not only a commander, but also an engineer – so you have ultimate control over your faction’s units, factories, superweapons and economy.
Why similar: RTS 73.5%, Strategy 17.5%, Multiplayer 7.7%, Singleplayer 1.2%
- #42 Avorion
70% matchVery Positive90% of 14,488 reviews2020
Dev: Boxelware
Windows · Mac · Linux
Median: 18.5 hrsMean: 99.0 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: Space Sim 47.3%, Building 23.6%, Space 19.9%, Sci-fi 9.2%
- #43 Space Engineers
70% matchVery Positive89% of 133,963 reviews2019
Dev: Keen Software House
Windows
Median: 9.0 hrsMean: 96.1 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 29.5%, Base Building 16.9%, Building 15.3%, Space 13.1%, Co-op 7.8%
- #44 Battlevoid: Sector Siege
73% matchMixed58% of 197 reviews2017
Dev: Bugbyte Ltd.
Windows · Mac · Linux
Battlevoid: Sector Siege is an epic straight into action real-time space strategy game, in which the world has been built to deliver a lively battle field; and the action is never more than just seconds away at the start of every game.
Why similar: Real-Time 26.4% ★, RTS 25.1%, Space 18.4%, Strategy 11.9%, Real Time Tactics 7.3%
- #45 Angels Fall First
71% matchVery Positive82% of 2,887 reviews2015
Dev: Strangely Interactive Ltd
Windows
Median: 1.6 hrsMean: 5.8 hrs≥1hr: 62%
From commanding the battle standing on the bridge of your flagship all the way down to tactical infantry firefights - AFF brings together all the combat you ever loved in a rich science fiction setting. Boarding, pilotable capital ships, deep weapon customization and full Bot support included!
Why similar: Space 25.4%, FPS 24.6%, Sci-fi 14.2%, Multiplayer 13.8%, Action 7%
- #46 Nuclear Dawn
71% matchMostly Positive78% of 2,489 reviews2011
Dev: GameConnectPub: Iceberg Interactive
Windows · Mac · Linux
Median: 2.9 hrsMean: 6.1 hrs≥1hr: 87%
Explore war-torn post-apocalyptic landscapes and take fight against enemies using various weapons in this FPS/RTS hybrid.
Why similar: Real-Time 23.1% ★, RTS 21.8%, FPS 11.3%, Base Building 9.1%, Strategy 7.8%
- #47 BattleGroupVR2
67% matchVery Positive86% of 192 reviews2025
Dev: SpaceOwl Games
Windows
BattleGroupVR2 is a virtual reality real-time space strategy where you explore the galaxy and lead a fleet of powerful warships from the bridge of your flagship. Explore, mine, trade, hunt. Grow your fleet, upgrade your ships, train your captains, and battle the enemy from the captain's chair.
Why similar: RTS 25.8%, Space Sim 25%, Action RTS 19.8% ★, War 11.5%, Sci-fi 7.1%
- #48 Starship Troopers: Extermination
65% matchMostly Positive80% of 33,168 reviews2024
Dev: Offworld
Windows
Median: 4.9 hrsMean: 18.6 hrs≥1hr: 86%
Starship Troopers: Extermination is a 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!
Why similar: Base Building 20.4%, Space 15.7%, FPS 15.5%, Co-op 10.3%, Multiplayer 9.3%
- #49 Element
70% matchMixed68% of 50 reviews2018
Dev: Flightless
Windows · Mac · Linux
Median: 4.0 hrsMean: 6.7 hrs≥1hr: 91%
Element is a realtime strategy space game for people who don't have time to play realtime strategy space games. Generate energy, mine element, build attack and defence units, and destroy the enemy while maintaining a balance between earth, air and water.
Why similar: RTS 24.3%, Real-Time 20.5% ★, Base Building 11.9%, Building 11.1%, Space 10.5%
- #50 Solar Expanse - Space Exploration Manager
65% matchVery Positive88% of 1,153 reviews2026
Dev: SpaceOpsPub: Games Operators
Windows
Median: 4.8 hrsMean: 14.6 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: Space Sim 42.7%, Space 24.3%, Building 13.4%, Sci-fi 9.5%, Strategy 7.7%
- #51 Outworld Station
65% matchVery Positive85% of 799 reviews2026
Dev: Trickjump Games Ltd
Windows
Median: 4.1 hrsMean: 10.8 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: RTS 27%, Base Building 24.4%, Space 18.7%, Co-op 10.1%, Strategy 6.8%
- #52 WARSHIFT
69% matchMostly Positive71% of 698 reviews2016
Dev: Cyril Megem
Windows
Median: 2.6 hrsMean: 3.6 hrs≥1hr: 78%
Unique mix of Action, RTS and RPG gameplay elements that forms an innovative game genre. You can build base, manage troops, and then come down to keep your enemy at gunpoint in the dynamic battle and customize your main characters.
Why similar: RTS 60.8%, Strategy 17.8%, Sci-fi 10.1%, Action 6.4%, Multiplayer 4.9%
- #53 Outpost: Infinity Siege
66% matchMixed65% of 13,600 reviews2024
Dev: Team RangerPub: Lightning Games
Windows
Median: 16.2 hrsMean: 41.5 hrs≥1hr: 91%
Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.
Why similar: RTS 22.9%, Robots 18.2%, Base Building 18%, FPS 11.7%, Co-op 7.9%
- #54 Eternal Starlight VR
67% matchVery Positive91% of 76 reviews2021
Dev: White Noise Games
Windows
Activate your Neural Link to gain an omniscient view of the battlefield. Experience the conflict at any scale, as you plot the course that will lead your fleet to victory. Eternal Starlight is a tactical space combat game, built from the ground up for VR.
Why similar: RTS 25.4%, Space Sim 21.9%, Action RTS 13.5% ★, Space 11.6%, Real Time Tactics 7.6%
- #55 Stationeers
67% matchVery Positive88% of 9,110 reviews2017
Dev: RocketWerkz
Windows
Median: 9.9 hrsMean: 83.8 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: Base Building 27.1%, Building 23%, Space 19.2%, Co-op 10.9%, Multiplayer 10%
- #56 Starship EVO
67% matchVery Positive84% of 1,485 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: Building 28.8%, Space Sim 27.8%, Space 25.1%, Sci-fi 7.1%, Multiplayer 5.7%
- #57 Act of Aggression - Reboot Edition
68% matchMixed67% of 3,303 reviews2015
Dev: Eugen Systems
Windows
Median: 3.7 hrsMean: 9.5 hrs≥1hr: 85%
Act of Aggression – Reboot Edition brings the techno-thriller RTS game Act of Aggression to a higher level. The Reboot Edition offers a full gameplay overhaul in skirmish mode against the AI and in your multiplayer battles.
Why similar: RTS 46.4%, Base Building 17.8%, Strategy 11.2%, War 7.4%, Multiplayer 6.8%
- #58 The Last Starship
64% matchMostly Positive75% of 1,617 reviews2026
Dev: Introversion Software
Windows · Mac
Median: 5.9 hrsMean: 11.4 hrs≥1hr: 80%
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 33%, Base Building 19.1%, Building 16.6%, Space 14.8%, Sci-fi 7.5%