- #1 Executive Assault
97% matchVery Positive85% of 1,455 reviews2015
Dev: Hesketh Studios Ltd
Windows
Median: 3.4 hrsMean: 7.1 hrs≥1hr: 78%
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 26.6%, Real-Time 16.7% ★, Base Building 9.8%, FPS 9.1%, Strategy 7.5%
Why You'll Like It: As the predecessor to the seed game, it offers the same core experience of managing a space base while piloting ships in first-person.
- #2 Silica
96% matchMostly Positive76% of 4,752 reviews2023
Dev: Martin 'Dram' MelichárekPub: Bohemia Interactive
Windows
Median: 2.9 hrsMean: 7.9 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 36.2%, FPS 15%, Multiplayer 9.8%, Strategy 8.5%, Sci-fi 7.9%
Why You'll Like It: This game perfectly mirrors the RTS/FPS hybrid structure by allowing players to switch between commanding units and engaging in direct first-person combat.
- #3 Sins of a Solar Empire II
95% matchVery Positive84% of 8,167 reviews2024
Dev: Ironclad Games CorporationPub: Stardock Entertainment
Windows
Median: 9.5 hrsMean: 28.7 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 26.4%, Real-Time 19.6% ★, Space 17.7%, Base Building 9%, Strategy 7.9%
Why You'll Like It: While lacking the FPS element, it provides the definitive space-based real-time strategy experience with deep fleet management and planetary conquest.
- #4 Battlezone: Combat Commander
96% matchVery Positive90% of 926 reviews2018
Dev: Big Boat InteractivePub: Rebellion
Windows
Median: 3.1 hrsMean: 6.4 hrs≥1hr: 80%
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 24.5% ★, RTS 23.5%, Strategy 11.1%, FPS 8.6%, Space 8.1%
Why You'll Like It: A classic title that defined the RTS/FPS hybrid genre, focusing on commanding ground and air units while piloting a tank in the heat of battle.
- #5 Carrier Command 2
94% matchVery Positive82% of 3,658 reviews2021
Dev: GeometaPub: MicroProse Software
Windows · Mac
Median: 9.1 hrsMean: 15.6 hrs≥1hr: 91%
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 42.9%, War 20.7%, Real Time Tactics 17.3%, Strategy 11.9%, First-Person 7.1%
Why You'll Like It: This game emphasizes the strategic management of a carrier platform while allowing for direct control of individual vehicles and drones.
- #6 Space Reign
93% matchMostly Positive76% of 377 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% ★, RTS 16.8%, Action RTS 12.3% ★, Space 11.2%, Real Time Tactics 9.6%
Why You'll Like It: Offers a blend of real-time tactical space combat and fleet management that captures the intensity of space warfare.
- #7 Planetary Annihilation: TITANS
94% matchVery Positive85% of 14,430 reviews2015
Dev: Planetary Annihilation Inc
Windows · Mac · Linux
Median: 3.9 hrsMean: 17.4 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 25.6%, Base Building 11.8%, Building 9.8%, Real Time Tactics 8.2%, War 8%
Why You'll Like It: Provides massive-scale real-time strategy combat across multiple planets, perfect for those who enjoy the macro-management side of the seed game.
- #8 Cosmoteer: Starship Architect & Commander
91% matchVery Positive95% of 12,431 reviews2022
Dev: Walternate Realities
Windows
Median: 19.3 hrsMean: 40.4 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 33.7% ★, Building 19.7%, Space 16.7%, Sci-fi 11.7%, Multiplayer 7.7%
Why You'll Like It: Focuses heavily on the ship-building and tactical combat aspects, allowing for intricate design and real-time control of your fleet.
- #9 Void Destroyer 2
92% matchVery Positive80% of 664 reviews2020
Dev: Iteration 11
Windows
Median: 2.4 hrsMean: 14.5 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 22.4%, Space 13%, Building 13%, Strategy 6.7%
Why You'll Like It: It combines space simulation, fleet management, and real-time strategy into a seamless experience that feels very similar to the seed game.
- #10 Stellar Warfare
91% matchVery Positive84% of 406 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 38.5%, Space 19.9%, Multiplayer 10.1%, Sci-fi 9.8%, Co-op 9.8%
Why You'll Like It: A space-based RTS that emphasizes ship customization and tactical fleet combat in a real-time environment.
- #11 X4: Foundations
90% matchMostly Positive80% of 27,985 reviews2018
Dev: Egosoft
Windows · Linux
Median: 5.1 hrsMean: 94.2 hrs≥1hr: 80%
Your journey to building a vast space empire begins behind the controls of a single ship. Explore the stars, trade goods, fight battles, build stations, buy and equip ships, and command fleets in a living, fully simulated universe that reacts to your decisions.
Why similar: Space Sim 45.8% ★, Space 18.6%, Building 14%, Sci-fi 6.7%, Strategy 6.3%
Why You'll Like It: While more simulation-heavy, it offers deep fleet management, economy control, and the ability to pilot various ships within a vast space sandbox.
- #12 SpaceBourne 2
88% matchMostly Positive77% of 4,992 reviews2025
Dev: Burak Dabak
Windows
Median: 2.4 hrsMean: 10.9 hrs≥1hr: 70%
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% ★, Base Building 20.2%, Space 12.7%, Building 11.4%, War 8.2%
Why You'll Like It: Combines space simulation, RPG elements, and fleet command, giving players a sense of agency over their own space-faring empire.
- #13 Ashes of the Singularity: Escalation
89% matchMostly Positive74% of 4,922 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 26.5%, Base Building 16.6%, Real Time Tactics 10.9%, Building 10.7%, Robots 7.9%
Why You'll Like It: A large-scale RTS that excels at managing massive armies and complex base-building chains.
- #14 Supreme Commander 2
89% matchVery Positive88% of 12,779 reviews2010
Dev: Gas Powered GamesPub: Square Enix
Windows
Median: 7.6 hrsMean: 31.1 hrs≥1hr: 76%
Includes 47 Steam achievements, leaderboards, and stats!
Why similar: RTS 33.4%, Real-Time 16.4% ★, Base Building 11.8%, Strategy 10.5%, Robots 7.3%
Why You'll Like It: Known for its massive scale and strategic zoom, it provides a satisfying experience for players who enjoy managing large-scale base operations.
- #15 BattleGroupVR
87% matchVery Positive92% of 943 reviews2023
Dev: SpaceOwl Games
Windows · Linux
Median: 1.7 hrsMean: 4.4 hrs≥1hr: 62%
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 16.4%, Real-Time 16% ★, Space 9.3%, Real Time Tactics 6.6%
Why You'll Like It: Allows you to command a space fleet from the bridge in VR, providing a unique perspective on real-time space strategy.
- #16 Dust Fleet
86% matchMostly Positive76% of 209 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 29.2% ★, Space Sim 22.8% ★, Space 11.8%, Real Time Tactics 10%, RTS 7.9%
Why You'll Like It: A space RTS that focuses on fleet management and tactical combat, emphasizing the strategic side of space warfare.
- #17 Deep Space Battle Simulator
86% matchMostly Positive79% of 410 reviews2021
Dev: yeswecamp
Windows · Linux
Median: 42 minMean: 3.8 hrs≥1hr: 38%
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 28% ★, RTS 21.5%, Space 11.5%, FPS 7.4%, Multiplayer 6.9%
Why You'll Like It: Focuses on the action-heavy, multiplayer side of space combat, allowing players to man stations on large capital ships.
- #18 NEBULOUS: Fleet Command
84% matchVery Positive81% of 3,819 reviews2022
Dev: Eridanus IndustriesPub: Hooded Horse
Windows
Median: 4.9 hrsMean: 30.4 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 40.4%, War 21.6%, Co-op 12.1%, Multiplayer 12%, Strategy 11.2%
Why You'll Like It: Focuses on realistic, tactical space combat where fleet positioning and command are paramount.
- #19 Grey Goo
84% matchMixed68% of 4,315 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 45.1%, Base Building 13.2%, Strategy 11.6%, Sci-fi 8.6%, Robots 6.9%
Why You'll Like It: A polished RTS that features distinct factions and base-building mechanics that will appeal to strategy fans.
- #20 Homeworld Remastered Collection
83% matchVery Positive88% of 13,977 reviews2015
Dev: Gearbox SoftwarePub: Gearbox Publishing
Windows · Mac
Median: 4.6 hrsMean: 34.0 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 43.8%, Space 28.7%, Strategy 11.6%, Sci-fi 9.5%, Multiplayer 5.3%
Why You'll Like It: The gold standard for 3D space RTS, offering unparalleled control over fleet formations and tactical maneuvers.
- #21 Rogue Command
81% matchVery Positive92% of 546 reviews2024
Dev: feneq
Windows
Classic RTS gameplay fused with a modern roguelite. Shape your build each run by assembling an evolving arsenal of powerful units and facilities. Harvest resources, build out your base. Raise your army and call down orbital strikes to overcome the forces threatening your survival.
Why similar: RTS 25%, Action RTS 18.2% ★, Base Building 15.5%, Building 13.5%, Space 11.4%
Why You'll Like It: An innovative RTS that incorporates roguelite elements, forcing players to adapt their base-building strategies on the fly.
- #22 Sins of a Solar Empire®: Rebellion
82% matchVery Positive93% of 16,246 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 25.6% ★, RTS 22.4%, Base Building 14.6%, Space 11.4%, Co-op 6.9%
Why You'll Like It: A staple of the space RTS genre that offers deep diplomacy, management, and large-scale fleet combat.
- #23 Earth 2160
82% matchMostly Positive73% of 1,542 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 36.2% ★, RTS 25.4%, Base Building 17%, Space 12.9%, Strategy 6.1%
Why You'll Like It: A classic RTS that features deep base-building and unit customization, set in a sci-fi environment.
- #24 Space Engineers
79% matchVery Positive89% of 133,238 reviews2019
Dev: Keen Software House
Windows
Median: 9.0 hrsMean: 95.7 hrs≥1hr: 87%
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 29.4% ★, Base Building 16.9%, Building 15.3%, Space 13.1%, Co-op 7.9%
Why You'll Like It: While primarily a sandbox, its deep building mechanics and ability to create functional, automated ships make it a great fit for fans of space construction.
- #25 Outworld Station
78% matchVery Positive90% of 506 reviews2025
Dev: Trickjump Games Ltd
Windows
Median: 3.9 hrsMean: 9.1 hrs≥1hr: 70%
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 27.2%, Base Building 24.3%, Space 18.8%, Co-op 10.5%, Strategy 7%
Why You'll Like It: Focuses on the automation and base-building aspects of space survival, requiring careful management of resources.
- #26 ERA ONE
77% matchVery Positive86% of 1,348 reviews2025
Dev: Team Complex LTD
Windows
Median: 3.4 hrsMean: 14.0 hrs≥1hr: 67%
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 26.4%, Action RTS 21.3% ★, Base Building 15.8%, Space 13.3%, Real Time Tactics 12.5%
- #27 Tempest Rising
76% matchVery Positive88% of 10,866 reviews2025
Dev: Slipgate Ironworks™Pub: 3D Realms
Windows
Median: 4.0 hrsMean: 10.1 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%, Strategy 12.4%, Base Building 11.7%, Real-Time 10.5% ★, Action RTS 3.9% ★
- #28 Element
81% 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 24.1%, Real-Time 20.4% ★, Base Building 12%, Building 11.2%, Space 10.5%
Why You'll Like It: A minimalist, fast-paced space RTS that focuses on resource management and planetary defense.
- #29 Rogue Station
78% matchMostly Positive78% of 228 reviews2023
Dev: Quint Studio
Windows
This "space station builder simulation roguelite" puts you in charge of a space station. Fight off enemy ships, fleets and rival stations to dominate your corner of space. Build and upgrade your station, hire and manage your crew. Survive as long as you can.
Why similar: Base Building 27.3%, Building 23.3%, Space 20.4%, Real Time Tactics 14.4%, Strategy 10.1%
Why You'll Like It: A roguelite base-building game that challenges players to manage and defend a space station against constant threats.
- #30 Annihilate The Spance
76% matchVery Positive91% of 338 reviews2025
Dev: Skyglow Softworks
Windows
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. An RTS base builder with huge battles, constant production, and autonomous ships.
Why similar: RTS 25.7%, Base Building 18.5%, Space 13.6%, Building 13.5%, War 9.3%
- #31 Celestial Command
79% matchMixed63% of 687 reviews2014
Dev: Romenics
Windows · Mac · 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 28.7% ★, Building 15.3%, Strategy 10.7%, Sci-fi 8.2%
Why You'll Like It: Features complex physics-based ship building and space station management in a realistic setting.
- #32 Gemini Wars
80% matchMostly Negative32% of 165 reviews2012
Dev: Camel 101
Windows · Mac
Median: 1.6 hrsMean: 4.0 hrs≥1hr: 94%
Take control of a fleet commander returned from exile, rise through the ranks of the United Space Federation forces and join an epic war across the stars.
Why similar: Real-Time 25.1% ★, Space Sim 19.5% ★, RTS 17.2%, Base Building 11.7%, Space 9.4%
Why You'll Like It: A space-based strategy game that emphasizes fleet management and tactical decision-making.
- #33 Space Engineers 2
74% matchMostly Positive76% of 4,293 reviews2025
Dev: Keen Software House
Windows
Median: 1.3 hrsMean: 7.1 hrs≥1hr: 58%
Space Engineers 2 is a sandbox about engineering and colonization where you build ships, stations, and planetary bases in a fully destructible world. Begin the story of Miro and Ivan Sokol, expand humanity’s foothold in the Almagest system, and fight to survive.
Why similar: Space Sim 33.8% ★, Building 24.7%, Space 20.4%, Sci-fi 10.3%, Strategy 8.3%
- #34 Void Destroyer
77% matchMixed60% of 351 reviews2015
Dev: Iteration 11
Windows
Median: 18 minMean: 3.0 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 26.8%, Space 24.1%, Space Sim 20.6% ★, Strategy 14.9%, Sci-fi 8.2%
- #35 Starbase
75% matchMixed56% of 6,702 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 35.2% ★, Building 19.2%, Space 13.6%, FPS 8.5%, Robots 7.7%
- #36 Sins of a Solar Empire: Trinity®
75% matchMostly Positive77% of 809 reviews2011
Dev: Ironclad Games CorporationPub: Stardock Entertainment
Windows
Median: 2.0 hrsMean: 30.9 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 23.8% ★, Space Sim 18.5% ★, RTS 16.3%, Base Building 10.4%, Building 8.7%
- #37 Zero-K
73% matchVery Positive94% of 4,227 reviews2018
Dev: Zero-K Team
Windows · Linux
Median: 2.3 hrsMean: 33.5 hrs≥1hr: 67%
With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps.
Why similar: RTS 36.5%, Real-Time 31% ★, Strategy 10.3%, Multiplayer 6.9%, Robots 5.1%
- #38 Istrolid
73% matchVery Positive87% of 2,684 reviews2016
Dev: treeform
Windows · Mac · Linux
Median: 1.0 hrsMean: 10.8 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 25.3%, Space 19.6%, Strategy 11.6%, Multiplayer 9.2%
- #39 Forged Battalion
74% matchMixed58% of 1,108 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%, Strategy 17.9%, Multiplayer 7.9%, Singleplayer 1.2%
- #40 Rusted Warfare - RTS
71% matchOverwhelmingly Positive96% of 7,087 reviews2017
Dev: Corroding Games
Windows · Mac · Linux
Median: 5.3 hrsMean: 32.4 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 39.5%, Real-Time 19.5% ★, Base Building 15.6%, Strategy 7.5%, Multiplayer 5%
- #41 Interstellar Rift
72% matchMixed68% of 1,655 reviews2020
Dev: Split PolygonPub: Iceberg Interactive
Windows
Median: 4.2 hrsMean: 33.2 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% ★, Building 22.2%, Space 15.8%, Sci-fi 7.6%, First-Person 6.3%
- #42 Reassembly
71% matchVery Positive94% of 4,066 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 40.5%, Space 32.5%, Strategy 11.5%, Sci-fi 5.5%, Action 4.3%
- #43 Avorion
69% matchVery Positive90% of 14,288 reviews2020
Dev: Boxelware
Windows · Mac · Linux
Median: 18.6 hrsMean: 98.8 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 47.2% ★, Building 23.7%, Space 19.9%, Sci-fi 9.2%
- #44 Final Upgrade
70% matchMostly Positive77% of 451 reviews2022
Dev: TaosX
Windows
Median: 2.9 hrsMean: 12.2 hrs≥1hr: 67%
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 26.1% ★, Base Building 20.7%, Building 18.2%, Space 16.2%, Sci-fi 7%
- #45 Battlevoid: Sector Siege
72% matchMixed58% of 194 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 26.2% ★, RTS 24.8%, Space 18.5%, Strategy 12.2%, Real Time Tactics 7.4%
- #46 BattleGroupVR2
67% matchVery Positive88% of 155 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 25.7%, Space Sim 25% ★, Action RTS 19.8% ★, War 11.5%, Sci-fi 7.1%
- #47 Empyrion - Galactic Survival
69% matchMostly Positive79% of 34,087 reviews2020
Dev: Eleon Game Studios
Windows
Median: 6.3 hrsMean: 76.7 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 29.3% ★, Building 16.7%, Space 14.7%, Co-op 9.9%, FPS 9.5%
- #48 Taur
70% matchMostly Positive80% of 2,078 reviews2020
Dev: Echo Entertainment
Windows
Median: 4.2 hrsMean: 6.8 hrs≥1hr: 76%
Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?
Why similar: RTS 22.7%, Base Building 22%, Strategy 12.2%, Robots 9.5%, Real Time Tactics 8.1%
- #49 StarMade
71% matchMixed68% of 2,981 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%, Building 21.5%, Space Sim 18.4% ★, Multiplayer 10%, Sci-fi 8.1%
- #50 Nuclear Dawn
70% matchMostly Positive78% of 2,481 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% ★, RTS 21.7%, FPS 11.1%, Base Building 9.2%, Strategy 7.9%
- #51 Star Ruler 2
69% matchVery Positive82% of 719 reviews2015
Dev: Blind Mind Studios
Windows · Linux
Median: 4.0 hrsMean: 8.9 hrs≥1hr: 93%
Massive scale 4X-RTS set in space. Control hundreds of planets, manipulate galactic politics, research numerous advanced technologies, and command thousands of units and hundreds of planets in your quest for galactic dominance.
Why similar: RTS 43.4%, Space 27.6%, Strategy 16.7%, Sci-fi 12.2%
- #52 Eternal Starlight VR
68% matchVery Positive91% of 75 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 25.1%, Space Sim 21.9% ★, Action RTS 13.4% ★, Space 11.6%, Real Time Tactics 7.7%
- #53 Starship Troopers: Extermination
64% matchMostly Positive80% of 32,811 reviews2024
Dev: Offworld
Windows
Median: 4.9 hrsMean: 17.7 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 20.5%, Space 15.8%, FPS 15.1%, Co-op 10.5%, Multiplayer 9.4%
- #54 Call to Arms
67% matchMostly Positive79% of 23,876 reviews2018
Dev: Digitalmindsoft
Windows
Median: 3.7 hrsMean: 18.7 hrs≥1hr: 74%
Call to Arms offers an innovative mix of real-time strategy and 3rd, as well as 1st person controls. Set in the time of modern warfare, the game offers realistically modeled vehicles and heavy weaponry. Command your troops to victory or fight by yourself in the 3rd or 1st person action mode.
Why similar: RTS 26.4%, Real-Time 23.2% ★, Strategy 11.9%, War 10.3%, Multiplayer 7.1%
- #55 Outpost: Infinity Siege
65% matchMixed66% of 13,528 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 22.7%, Robots 18.3%, Base Building 18%, FPS 11.4%, Co-op 8%
- #56 Angels Fall First
67% matchVery Positive82% of 2,786 reviews2015
Dev: Strangely Interactive Ltd
Windows
Median: 1.6 hrsMean: 5.9 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 wanted in a rich science fiction setting. Boarding, pilotable capital ships, deep weapon customization and full AI support included!
Why similar: Space 25.6%, FPS 24%, Sci-fi 14.2%, Multiplayer 14%, Action 6.9%
- #57 WARSHIFT
68% matchMostly Positive71% of 697 reviews2016
Dev: Cyril Megem
Windows
Median: 2.5 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%, Strategy 18.2%, Sci-fi 10.3%, Action 6.5%, Multiplayer 5%
- #58 Act of Aggression - Reboot Edition
68% matchMixed67% of 3,289 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 17.9%, Strategy 11.5%, War 7.4%, Multiplayer 6.9%