- #1 Five Nations
97% matchVery Positive83% of 265 reviews2021
Dev: SilverForge
Windows
Five Nations is a real-time sci-fi strategy game for PC platform. Encompassing tactical combat in space in real-time mixed with micromanagement of economy, construction, and production featuring different kind of single player modes.
Why similar: RTS 23.7%, Action RTS 22.7% ★, Space 9.3%, Sci-fi 7.9%, Base Building 7.2%
Why You'll Like It: This title closely mirrors the classic RTS mechanics and sci-fi aesthetic found in BlackChain.
- #2 Grey Goo
96% 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 47.7%, Base Building 16.4%, Sci-fi 14.8%, Strategy 12.9%, Space 3.5%
Why You'll Like It: It offers a polished, traditional RTS experience with a heavy focus on base-building and distinct faction mechanics.
- #3 Earth 2160
96% 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: RTS 36.5%, Base Building 28.8%, Space 21.1%, Strategy 9.2%, Sci-fi 1.8%
Why You'll Like It: A classic sci-fi RTS that shares the same gritty, industrial atmosphere and base-building depth as the seed game.
- #4 Homeworld Remastered Collection
95% 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 41%, Space 30.7%, Sci-fi 14.6%, Strategy 11.4%, Futuristic 1.5%
Why You'll Like It: This is the definitive space-based RTS experience, focusing on tactical fleet management and deep sci-fi storytelling.
- #5 Sins of a Solar Empire®: Rebellion
94% 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: RTS 30.6%, Base Building 23.5%, Space 17.7%, Sci-fi 12.9%, Strategy 7.9%
Why You'll Like It: It provides a grand-scale space strategy experience that blends real-time combat with empire management.
- #6 Ancient Space
94% matchMixed44% of 365 reviews2014
Dev: CreativeForge GamesPub: Paradox Interactive
Windows · Mac
Median: 4.4 hrsMean: 5.1 hrs≥1hr: 89%
Ancient Space is a story driven single player real time strategy game where you take command of a fleet embarking on a scientific mission to chart undiscovered reaches of space called ‘The Black Zone’. Overcome overwhelming odds and fight for your life and the survival of your ship and its crew.
Why similar: RTS 39.8%, Space 29%, Strategy 16.5%, Sci-fi 12.4%, Singleplayer 2%
Why You'll Like It: A narrative-heavy space RTS that emphasizes unit preservation and tactical positioning.
- #7 Executive Assault 2
91% matchVery Positive83% of 1,726 reviews2023
Dev: Hesketh Studios Ltd
Windows · Mac
Median: 4.0 hrsMean: 8.4 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: RTS 26.4%, Base Building 16.7%, Action RTS 15.5% ★, Space 11.2%, War 9.5%
Why You'll Like It: It uniquely blends traditional RTS base-building with the ability to jump into units for direct action.
- #8 Meridian: Squad 22
93% matchMixed66% of 131 reviews2016
Dev: Elder GamesPub: Headup
Windows
Median: 3.4 hrsMean: 4.8 hrs≥1hr: 93%
Meridian: Squad 22 is a single-player science-fiction real-time strategy game with a focus on base building and advanced tactics. Every single choice, every tactical decision you make, shapes the outcome of your story.
Why similar: RTS 56.8%, Strategy 38%, Indie 5.2%
Why You'll Like It: A focused single-player RTS that emphasizes narrative-driven missions and traditional combat mechanics.
- #9 Nomad Fleet
92% matchMixed67% of 212 reviews2016
Dev: Autarca
Windows · Mac · Linux
Median: 3.1 hrsMean: 3.2 hrs≥1hr: 79%
Nomad Fleet is a RTS game where you must lead the last remnants of Mankind to safety after a mysterious alien race has hunted them near extinction. Lead a fully armed fleet of battleships, carriers and fighters through a series of randomized scenarios and encounters where they must fight for their survival while scavenging for resources,...
Why similar: RTS 32.7%, Space 26.6%, Strategy 19.8%, Sci-fi 16.3%, Indie 2.5%
Why You'll Like It: This game focuses on fleet management and survival in space, capturing the isolation and tactical tension of the genre.
- #10 Command & Conquer™ Remastered Collection
90% matchVery Positive91% of 34,382 reviews2020
Dev: PetroglyphPub: Electronic Arts
Windows
Median: 4.2 hrsMean: 22.7 hrs≥1hr: 81%
Command & Conquer and Red Alert are both remastered in 4K by the former Westwood Studios team members. Includes all 3 expansions, rebuilt multiplayer, a modernized UI, Map Editor, bonus footage gallery, and over 7 hours of remastered music.
Why similar: RTS 42.9%, Base Building 27.3%, War 13.1%, Strategy 12.3%, Isometric 3%
Why You'll Like It: As the blueprint for the genre, it delivers the exact style of base-building and unit management that defines the classic RTS feel.
- #11 Nexus - The Jupiter Incident
91% matchVery Positive86% of 1,053 reviews2007
Dev: Mithis GamesPub: HandyGames
Windows
Median: 1.9 hrsMean: 12.1 hrs≥1hr: 64%
Ambitious megacorporations monopolize the conquest of space and the colonization of the solar system. At the very edge of the solar system, the companies make a discovery that will shift the technological advantage and upset the balance. And so a new conflict is born: "The Jupiter Incident."
Why similar: Space 32.3%, RTS 30.9%, Sci-fi 18.4%, Strategy 15.5%, Singleplayer 2.1%
Why You'll Like It: Focuses heavily on tactical space combat and mission-based objectives in a realistic sci-fi setting.
- #12 Supreme Commander: Forged Alliance
89% matchOverwhelmingly Positive97% of 14,047 reviews2011
Dev: Gas Powered GamesPub: Square Enix
Windows
Median: 6.8 hrsMean: 48.5 hrs≥1hr: 75%
The last days of man are at hand.. Two years after the Infinite War the once great warring nations now lie in ruins, and humanity’s hope for a brighter future is nothing but a bitter memory. A new, seemingly unstoppable enemy, supported by the zealots of The Order, now seeks to eradicate mankind: UEF, Aeon Loyalist, and Cybran alike.
Why similar: RTS 49.9%, Base Building 15.9%, Strategy 14.2%, Sci-fi 13.1%, War 2.9%
Why You'll Like It: It excels in massive-scale RTS combat and base-building, perfect for players who enjoy the strategic depth of BlackChain.
- #13 Planetary Annihilation: TITANS
88% 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 30.5%, Base Building 16.5%, War 13.2%, Space 10.5%, Sci-fi 8.4%
Why You'll Like It: Offers a massive scale of destruction and base-building that appeals to fans of high-stakes RTS warfare.
- #14 Space Reign
86% 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: Action RTS 25.1% ★, RTS 21.4%, Space 16.2%, War 11.6%, Sci-fi 10.8%
Why You'll Like It: Focuses on the tactical side of space combat and fleet management for a more hands-on strategy experience.
- #15 SunAge: Battle for Elysium
89% matchMostly Positive73% of 184 reviews2014
Dev: vertex4 entertainment GmbH
Windows · Mac
A return to the roots of real-time strategy, providing beautiful 2D visuals combined with all the features that we came to expect from old school classics. This remastered version is a culmination of all the improvements and new features based upon suggestions from the community.
Why similar: RTS 25.5%, Base Building 19.2%, Old School 12.3%, War 11.9%, Sci-fi 10.3%
Why You'll Like It: It features classic resource gathering and base-building mechanics set against a harsh, futuristic backdrop.
- #16 MarZ: Tactical Base Defense
87% matchMostly Positive78% of 885 reviews2019
Dev: Giant Grey
Windows
Median: 2.5 hrsMean: 5.5 hrs≥1hr: 71%
Build your defense base to fight back the undead hordes of Mars and secure the future of the red planet. MarZ is a game of strategy and tactical defense where you must carefully manage your crew and resources as you try to uncover the terrible secrets of the undead.
Why similar: RTS 26.4%, Mars 23.3% ★, Base Building 15.7%, Strategy 9.1%, Sci-fi 6.9%
Why You'll Like It: Shares the Mars setting and base-building focus, though it leans more into tower defense mechanics.
- #17 Tempest Rising
83% 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 53.4%, Base Building 13.9%, Strategy 13.1%, Action RTS 6.4% ★, War 4.8%
Why You'll Like It: A modern homage to 90s-era RTS games, focusing on base-building and resource gathering.
- #18 Iron Harvest
85% matchMostly Positive73% of 15,723 reviews2020
Dev: KING ArtPub: Prime Matter
Windows
Median: 3.2 hrsMean: 12.0 hrs≥1hr: 75%
A classic real-time strategy game with an epic single player campaign, multiplayer & coop, set in the alternate reality of 1920+
Why similar: RTS 41.4%, Base Building 24.4%, War 17.7%, Strategy 9.7%, Sci-fi 5.5%
Why You'll Like It: While set in an alternate history, its core gameplay loop of base-building and tactical unit control is very similar to classic RTS titles.
- #19 Dune: Spice Wars
84% matchMostly Positive79% of 13,257 reviews2023
Dev: Shiro GamesPub: Funcom
Windows
Median: 7.0 hrsMean: 16.2 hrs≥1hr: 85%
A 4X real-time strategy game from the developers of the critically acclaimed Northgard. Set in Frank Herbert’s groundbreaking Dune universe, you must lead your faction and battle for control and dominance over the harsh desert planet of Arrakis.
Why similar: RTS 28.3%, Base Building 19.3%, War 17.3%, Sci-fi 15.6%, Building 8.1%
Why You'll Like It: Features deep resource management and faction-based strategy on a harsh, desert planet reminiscent of Mars.
- #20 STAR WARS™ Empire at War - Gold Pack
84% matchOverwhelmingly Positive98% of 41,807 reviews2010
Dev: PetroglyphPub: LucasArts
Windows
Median: 3.8 hrsMean: 46.9 hrs≥1hr: 72%
Command or corrupt an entire galaxy in the definitive Star Wars strategy collection. It is a time of galactic civil war. Will you take up the reins of the Rebellion, assume control of the Empire, or rule the Star Wars Underworld?
Why similar: RTS 40.6%, Space 19.3%, Strategy 14%, Sci-fi 12.7%, War 11.2%
Why You'll Like It: Combines ground-based base-building with space fleet combat, mirroring the multi-layered strategy of BlackChain.
- #21 Calyx
82% matchVery Positive89% of 308 reviews2026
Dev: Studio 568
Windows
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
Why similar: Mars 22.9% ★, Action RTS 17.6% ★, RTS 15.5%, Base Building 11.9%, Space 8.1%
Why You'll Like It: An early-access RTS that captures the base-building and sci-fi exploration themes of BlackChain.
- #22 Etherium
86% matchMostly Negative37% of 953 reviews2015
Dev: Tindalos InteractivePub: Focus Entertainment
Windows
Median: 3.4 hrsMean: 4.2 hrs≥1hr: 90%
Etherium is a real-time strategy game set in a science-fiction universe, where three factions battle it out for a mysterious and rare resource known as ‘Etherium’.
Why similar: RTS 36%, Sci-fi 31.7%, Strategy 17.6%, Space 14%, Singleplayer 0.8%
Why You'll Like It: A sci-fi strategy game that focuses on resource control and tactical combat across multiple planets.
- #23 Reshaping Mars
81% matchVery Positive85% of 831 reviews2023
Dev: TholusPub: Yooreka Studio
Windows
Median: 2.2 hrsMean: 18.4 hrs≥1hr: 62%
「Reshaping Mars」is a colony simulation game on Mars, you will start by gathering resources, storing food, accepting immigrants, and building a better colony together. Develop powerful technologies for Mars Reshaping, make Mars great agai..sorry, just great. Don't forget to make the residents happy.
Why similar: Mars 25.4% ★, RTS 20.3%, Base Building 16%, Space 9.3%, Futuristic 7.1%
Why You'll Like It: Focuses heavily on the colonization and base-building aspects of Mars, appealing to the management side of the seed game.
- #24 O.R.B: Off-World Resource Base
82% matchMostly Positive78% of 105 reviews2014
Dev: Strategy First
Windows
Median: 18 minMean: 37.5 hrs≥1hr: 41%
An epic struggle for control!
Why similar: RTS 35.8%, Space 31%, Strategy 22.6%, Sci-fi 10.6%
Why You'll Like It: A classic space-themed RTS that emphasizes resource extraction and fleet expansion.
- #25 8-Bit Armies
80% matchVery Positive82% of 2,459 reviews2016
Dev: Petroglyph
Windows
Median: 4.6 hrsMean: 7.8 hrs≥1hr: 84%
8-Bit Armies is a retro Real-Time Strategy game. With a colorful, blocky voxel art style, 8-Bit Armies is Petroglyph's most fast-paced, friendly, and accessible RTS game to date. Featuring a campaign of 25 single-player missions, 12 co-op missions, multiplayer and skirmish modes.
Why similar: RTS 48.4%, Strategy 21.3%, Base Building 17%, War 10.7%, Indie 2.1%
Why You'll Like It: A straightforward, fast-paced RTS that strips away complexity to focus on pure base-building and combat.
- #26 Byte Lynx
79% matchVery Positive98% of 88 reviews2022
Dev: Artful Games
Windows
Byte Lynx is a fast-paced RTS with no units. Build defenses, dismantle your enemy, and steal their buildings in this deeply tactical building combat-based strategy game. Expand your arsenal across a series of diverse levels!
Why similar: Action RTS 22.1% ★, RTS 19.5%, Base Building 15.8%, War 9.8%, Sci-fi 7.2%
Why You'll Like It: A smaller-scale RTS that blends base-building with puzzle-like strategic challenges.
- #27 Halo Wars: Definitive Edition
78% matchVery Positive91% of 9,133 reviews2017
Dev: Ensemble StudiosPub: Xbox Game Studios
Windows
Median: 4.1 hrsMean: 13.3 hrs≥1hr: 84%
Halo Wars: Definitive Edition is an enhanced version of the real-time strategy classic, Halo Wars, updated to run natively on PC. Halo Wars: Definitive Edition includes improved graphics, new achievements and all of the DLC created for the landmark real-time strategy game.
Why similar: RTS 41.4%, Base Building 24.5%, War 12.6%, Strategy 11.5%, Sci-fi 8.4%
Why You'll Like It: Provides a streamlined, action-oriented RTS experience that fits well with the 'action-rts' tag of the seed game.
- #28 Annihilate The Spance
77% 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 24.2%, Base Building 20.5%, Space 14.6%, War 12.2%, Sci-fi 7.4%
- #29 Rogue Command
76% 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: Action RTS 22.9% ★, RTS 19.6%, Base Building 14.3%, Space 10.2%, Futuristic 8.5%
- #30 Act of Aggression - Reboot Edition
79% 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 50.9%, Base Building 23.1%, Strategy 13.2%, War 11.2%, Singleplayer 1.3%
Why You'll Like It: A modern take on the classic base-building RTS formula with a focus on resource management and tech trees.
- #31 Dust Fleet
78% 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: Space 27.4%, Sci-fi 20.3%, RTS 16.1%, Strategy 13.5%, Base Building 13.2%
Why You'll Like It: A space-based strategy game that incorporates 4X elements with real-time tactical combat.
- #32 Mechs & Mercs: Black Talons
81% matchMixed43% of 162 reviews2015
Dev: Camel 101
Windows
Median: 3.6 hrsMean: 4.7 hrs≥1hr: 94%
You are the commander of the Black Talons company, currently stationed in the Oberon system. After an eventful campaign, the military Tzanar Union has overrun the planet of Genai and blocked all departure from the system: leaving you and the Black Talons stranded.
Why similar: RTS 31%, War 15.5%, Space 14.3%, Sci-fi 10.6%, Strategy 7.3%
Why You'll Like It: Focuses on tactical unit management and mercenary warfare in a sci-fi setting.
- #33 Solargene
75% matchMostly Positive76% of 819 reviews2026
Dev: Alexander Semenov
Windows
Median: 3.7 hrsMean: 34.8 hrs≥1hr: 71%
Take Command of a Space Corporation in the Sci-Fi Simulator Solargene! Manage personnel, design and develop colonies and orbital stations across the solar system! Mine resources, establish logistics, research cutting-edge technologies, trade, and complete missions
Why similar: Base Building 25.1%, Mars 24.7% ★, Space 13.5%, Building 8.1%, Sci-fi 7.5%
- #34 SpaceCorp: 2025-2300AD
75% matchVery Positive82% of 68 reviews2025
Dev: Logix Interactive
Windows · Mac
Lead mankind's exploration into outer space! Build bases on the Moon and Mars, survey the rings of Saturn, and send generational Colony ships to Alpha Centauri, all in one sitting! SpaceCorp: 2025-2300 AD is a fast-playing, single-player, turn-based, sci-fi strategy game.
Why similar: Mars 32% ★, Science 17% ★, Base Building 14.3%, Space 13.4%, Sci-fi 9.6%
- #35 Farlanders
74% matchVery Positive92% of 569 reviews2023
Dev: Andriy BychkovskyiPub: Crytivo
Windows · Mac · Linux
Median: 2.2 hrsMean: 7.9 hrs≥1hr: 62%
Terraform, strategize, and construct a Martian colony in this retro-inspired turn-based city builder. Create a comfortable living for your citizens, research alien artifacts, and uncover the secrets of the Red Planet.
Why similar: Mars 38.8% ★, Base Building 18.8%, Space 14%, Sci-fi 8.5%, Building 6.9%
- #36 ShellMobile: Titan Rampart
73% matchVery Positive98% of 206 reviews2025
Dev: 红景天娱乐
Windows
On the cosmic frontier, humanity has fought alien species for a century. As traditional defenses fall to new-gen alien mechs, tech giant ShellMobile—human-centered at its core—kindles new hope via breakthroughs in extraterrestrial titanium ore research.
Why similar: RTS 28.4%, Base Building 23.8%, Strategy 10.4%, Sci-fi 9.3%, War 9%
- #37 Sol 0: Mars Colonization
77% matchMixed69% of 409 reviews2016
Dev: Chondrite Games
Windows · Mac · Linux
Median: 3.0 hrsMean: 6.9 hrs≥1hr: 74%
Sol 0 is a real time strategy game where you establish the first Martian colony. From the first human footprints on Martian soil to a thriving and self-sustaining colony, Sol 0 imagines a near future using technology that could be available within the next few decades.
Why similar: Mars 42.6% ★, Base Building 24.1%, Space 18.7%, Strategy 13%, Indie 1.6%
- #38 Homeworld: Deserts of Kharak
73% matchMostly Positive79% of 8,793 reviews2016
Dev: Blackbird InteractivePub: Gearbox Publishing
Windows · Mac
Median: 5.0 hrsMean: 9.6 hrs≥1hr: 87%
A ground-based RTS prequel to the classic Homeworld games. Assemble your fleet and lead them to victory on the shifting sands of Kharak in this compelling strategy game for PC from Blackbird Interactive.
Why similar: RTS 51.3%, Sci-fi 17.5%, Strategy 15.4%, Space 10.7%, Futuristic 4%
- #39 MoonBase Commander
74% matchVery Positive89% of 180 reviews2014
Dev: Humongous EntertainmentPub: Rebellion
Windows
Median: 2.9 hrsMean: 4.7 hrs≥1hr: 94%
Explore. Strategize. Conquer.In the far future, Mankind has nearly exhausted all of earth’s natural resources. Fragile alliances between nations are tested to their limits as fierce wars ignite across land and space.MoonBase Commander puts you in charge of your own lunar territory in a quest to build the most powerful empire in space.
Why similar: Strategy 100%
- #40 PERIMETER: Legate Edition
71% matchVery Positive92% of 139 reviews2024
Dev: K-D LabPub: Association K-D Lab
Windows · Linux
Perimeter is a real-time strategy game with a destructible world. Utilize the environment for resource gathering and defense against enemies. Immerse yourself in the millennia-spanning history of the Chains of Worlds and lead a faction in the struggle for survival.
Why similar: Action RTS 27.3% ★, RTS 23.5%, Space 10.5%, Futuristic 9.3%, Sci-fi 7.4%
- #41 Space Company Simulator
76% matchMostly Negative28% of 178 reviews2019
Dev: IntermarumPub: All in! Games
Windows
Take the position of a CEO of a space transport company and become a new major player in the industry. Space Company Simulator is a realistic management sim game that will challenge your planning skills as you strive to launch the first manned mission to Mars.
Why similar: Mars 30.1% ★, Base Building 18.3%, Space 13.1%, Strategy 8.4%, Futuristic 8.4%
- #42 Planet S
69% matchVery Positive92% of 2,816 reviews2023
Dev: Glimmerlight Games
Windows · Linux
Planet S is a real-time strategy game where your goal is to colonize multiple planets in a solar system to advance your civilization, build a city and supply it to grow your faction.
Why similar: RTS 31%, Space 18.2%, Futuristic 11.3%, Sci-fi 10.6%, Strategy 8.7%
- #43 Planets Under Attack
72% matchMostly Positive73% of 1,241 reviews2012
Dev: Targem GamesPub: Topware Interactive
Windows · Mac
Median: 3.3 hrsMean: 10.0 hrs≥1hr: 86%
Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies.
Why similar: Strategy 87.5%, Space 7.1%, Sci-fi 4%, Indie 1.5%
- #44 Industries of Titan
70% matchMixed63% of 1,604 reviews2023
Dev: Brace Yourself Games
Windows
Median: 5.4 hrsMean: 14.0 hrs≥1hr: 84%
Create a sprawling industrial city. Compete with other rival corporations on Titan for resources, territory, and power. Seek victory via technology, influence, warfare, or the wealth extracted from your citizens. Stake your claim to the Industries of Titan in this innovative sim/strategy game!
Why similar: Base Building 25.6%, Space 17.6%, Sci-fi 13.3%, Futuristic 12%, Building 9.9%
- #45 A Planet of Mine Legacy
71% matchMixed63% of 62 reviews2019
Dev: Tuesday Quest
Windows
A Planet of Mine is a mini procedural 4X. Starting from a single and unique planet, survive, gather and combine resources, develop your technologies and start the conquest of space.
Why similar: Base Building 31%, Science 19.7% ★, Space 18.1%, Building 12.6%, Resource Management 8.5%
- #46 Protolife
70% matchVery Positive86% of 465 reviews2018
Dev: Volcanic Giraffe
Windows · Mac
Median: 3.2 hrsMean: 7.7 hrs≥1hr: 74%
Protolife is an unique tower-based strategy game which gives you a direct control over the builder robot in a struggle against the hungry proto-life organism.
Why similar: RTS 39%, Base Building 29.5%, Sci-fi 14%, Strategy 9.8%, Top-Down 4.4%
- #47 Mars or Die!
72% matchMixed53% of 74 reviews2018
Dev: 34BigThings srl
Windows
Median: 12 minMean: 11.7 hrs≥1hr: 36%
Control two characters simultaneously! Survive, gather, collect upgrades, fight all sizes of one-eyed Martians, build defensible outposts and conquer Mars, in this glorious mix between roguelite and tower defense.
Why similar: Mars 35.5% ★, Base Building 16%, Space 12.2%, Futuristic 8.9%, Sci-fi 8.1%
- #48 IDUN - Frontline Survival
67% matchMostly Positive79% of 671 reviews2025
Dev: IDUN InteractivePub: Surefire.Games
Windows · Mac · Linux
Median: 5.1 hrsMean: 10.9 hrs≥1hr: 76%
A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!
Why similar: RTS 21.4%, Base Building 16.5%, War 12.5%, Space 11.2%, Sci-fi 8.8%
- #49 Element
71% 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 24.8%, Base Building 14.5%, War 13.5%, Space 12.4%, Sci-fi 9.3%
- #50 Iron Marines
69% matchMostly Positive78% of 1,831 reviews2019
Dev: Ironhide Game Studio
Windows · Mac · Linux
Median: 5.1 hrsMean: 11.4 hrs≥1hr: 87%
Real-time strategy battles in amazing sci-fi worlds! Command brave soldiers, mighty mechas and powerful aliens to face the greatest challenges in hostile alien worlds. The galaxy needs you!
Why similar: RTS 42.9%, Sci-fi 15.9%, Space 13.4%, Strategy 10.6%, War 10%
- #51 Interstellar Space: Genesis
67% matchVery Positive84% of 818 reviews2019
Dev: Praxis Games
Windows
Median: 1.3 hrsMean: 11.7 hrs≥1hr: 54%
Interstellar Space: Genesis is a turn-based space 4X strategy game in which you attempt to build a thriving galactic empire. Discover mysteries among the stars, colonize worlds, and engage enemies in tactical turn-based combat on your journey to becoming the ruler of the galaxy!
Why similar: Space 27.6%, Sci-fi 20.6%, War 18.8%, Strategy 13.9%, Futuristic 13.8%
- #52 Per Aspera
67% matchMostly Positive76% of 5,662 reviews2020
Dev: Tlön IndustriesPub: Raw Fury
Windows
Median: 5.0 hrsMean: 11.9 hrs≥1hr: 93%
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
Why similar: Mars 31.6% ★, Base Building 17.1%, Science 15.3% ★, Space 10.8%, Sci-fi 7.9%
- #53 2112TD: Tower Defense Survival
66% matchVery Positive88% of 428 reviews2023
Dev: Refinery Games
Windows
Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi adventure.
Why similar: Space 22.8%, Sci-fi 21.2%, Isometric 15.6%, Old School 14.5%, Strategy 13.4%
- #54 Galaxy Reavers
69% matchMixed70% of 204 reviews2016
Dev: Good Games
Windows
This is a fun yet challenging RTS game. To survive in the vast galaxy, you need to build up your own fleet and customize your warships. You will also learn to control them efficiently in battle to defeat your enemies, conquer planets, and expand your galactic empire!
Why similar: RTS 38.5%, Space 28.7%, Strategy 17.7%, Sci-fi 13.6%, Indie 1.5%
- #55 Total Annihilation
66% matchOverwhelmingly Positive97% of 3,674 reviews2015
Dev: Cavedog EntertainmentPub: Wargaming.net
Windows
Median: 54 minMean: 13.8 hrs≥1hr: 47%
What began as a conflict over the transfer of consciousness from flesh to machines escalated into a war which has decimated a million worlds. The Core and the Arm have all but exhausted the resources of a galaxy in their struggle for domination.
Why similar: RTS 60.5%, Strategy 15.6%, Sci-fi 13.7%, Base Building 6.9%, Singleplayer 1.9%
- #56 Haegemonia: Legions of Iron
70% matchMixed68% of 101 reviews2014
Dev: Digital RealityPub: Microids
Windows
Median: 0 minMean: 25.0 hrs≥1hr: 27%
From the makers of the award-winning Imperium Galactica 1 and 2 games, discover a powerful space-opera like RTS game.
Why similar: RTS 42.3%, Space 29.1%, Strategy 18.6%, Sci-fi 8.7%, Indie 1.3%
- #57 M.A.X.: Mechanized Assault & Exploration
67% matchVery Positive88% of 207 reviews2017
Dev: Interplay Entertainment Corp.
Windows · Mac · Linux
Colonize newly-discovered planets, control the resources found there, and defend your colony against other rival factions in real-time or turn-based action.
Why similar: Strategy 32.7%, RTS 28.2%, Sci-fi 16.9%, Futuristic 15.4%, Top-Down 6.7%
- #58 Astra Exodus
68% matchMixed45% of 53 reviews2020
Dev: Atomic KaiserPub: Slitherine Ltd.
Windows
Astra Exodus is a single player turn based Sci-fi 4X strategy game inspired by the classics, with a multiple choice narrative driven epic campaign, top down real time tactical battles and an extensive semi-randomized research grid.
Why similar: Strategy 45.2%, War 15.5%, Old School 13.2%, Sci-fi 11.7%, Indie 6.9%
- #59 PlanetX
65% matchMixed66% of 50 reviews2025
Dev: Giedrius Talzunas
Windows · Mac
PlanetX is a real-time strategy MMO set on a spherical planet. Players expand territories, construct buildings, and manage resources to develop their empire. The ultimate goal is to conquer the entire planet by claiming all land plots and outpacing rivals in strategic growth and domination.
Why similar: RTS 27.1%, War 11.7%, Space 10.2%, Futuristic 10%, Base Building 9.9%