- #1 Homeworld Remastered Collection
97% 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 39.7%, Space 24.1%, Strategy 13.8%, Sci-fi 11.9%, Moddable 7.4% ★
Why You'll Like It: This is the definitive space RTS experience that shares the tactical fleet management and sci-fi atmosphere found in Five Nations.
- #2 Sins of a Solar Empire®: Rebellion
96% 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 39.3%, Space 18.5%, Sci-fi 13.9%, Strategy 12.7%, Base Building 12.4%
Why You'll Like It: It offers a grander scale of space RTS gameplay while maintaining the core focus on resource management and fleet combat.
- #3 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 47.8%, Strategy 16.2%, Sci-fi 12.5%, Aliens 12.2%, Base Building 6.7%
Why You'll Like It: It brings a traditional, polished RTS experience with distinct factions and classic base-building mechanics.
- #4 Supreme Commander: Forged Alliance
95% 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 49.3%, Strategy 17.6%, Moddable 12.2% ★, Sci-fi 10.9%, Base Building 6.4%
Why You'll Like It: It excels in large-scale tactical warfare and complex base management, appealing to players who enjoy the strategic depth of Five Nations.
- #5 Command & Conquer™ Remastered Collection
94% 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 52.1%, Strategy 18.8%, Base Building 13.6%, 1990's 7%, Isometric 5.1%
Why You'll Like It: As a pillar of the RTS genre, it provides the classic base-building and unit production loop that inspired the design of Five Nations.
- #6 Ashes of the Singularity: Escalation
94% 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 32.7%, Moddable 25.7% ★, Isometric 11.9%, Base Building 9.9%, Strategy 9.5%
Why You'll Like It: This game focuses on massive-scale sci-fi warfare with a strong emphasis on strategic control and resource management.
- #7 Ancient Space
93% 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 41%, Space 24.2%, Strategy 21.4%, Sci-fi 10.8%, Singleplayer 2%
Why You'll Like It: A story-driven space RTS that focuses on fleet management and tactical missions in deep space.
- #8 Particle Fleet: Emergence
91% matchVery Positive92% of 1,261 reviews2016
Dev: Knuckle Cracker
Windows · Mac · Linux
Median: 6.7 hrsMean: 24.9 hrs≥1hr: 76%
Build and design your own fleets and stand opposed to the Particulate in this physics/strategy/RTS/fleet hybrid. Build partially destructible and self repairing ships that interact with enemies less controlled by some scripted logic and more driven by a real time massive physics particle simulation.
Why similar: RTS 38.7%, Strategy 26%, Space 20%, Sci-fi 8.9%, Indie 5.2%
Why You'll Like It: It offers a unique, physics-based take on space RTS combat that requires careful tactical positioning.
- #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 32.8%, Strategy 25%, Space 21.7%, Sci-fi 13.8%, Indie 4.8%
Why You'll Like It: A direct homage to classic space RTS games, it features similar fleet-based combat and resource gathering mechanics.
- #10 Tempest Rising
89% 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 61.1%, Strategy 18.8%, Action RTS 7.4% ★, Base Building 6.5%, Isometric 4.8%
Why You'll Like It: A modern take on the classic RTS formula that prioritizes base-building and tactical unit movement.
- #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: RTS 29.5%, Space 24.9%, Strategy 18.6%, Sci-fi 14.7%, Moddable 9% ★
Why You'll Like It: It focuses heavily on tactical space combat and ship management, mirroring the combat intensity of Five Nations.
- #12 Planetary Annihilation: TITANS
90% 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 47.3%, Strategy 14.2%, Space 13.2%, Sci-fi 11%, Base Building 10.5%
Why You'll Like It: This title offers a unique, high-speed approach to RTS combat across multiple planets, perfect for fans of tactical sci-fi strategy.
- #13 Haegemonia: Legions of Iron
89% 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 42.7%, Space 23.8%, Strategy 23.6%, Sci-fi 7.4%, Indie 2.5%
Why You'll Like It: This classic space strategy game emphasizes research, exploration, and tactical combat in a sci-fi setting.
- #14 Space Reign
85% 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 30.8% ★, RTS 25.9%, Space 15.8%, Sci-fi 11%, Strategy 9%
Why You'll Like It: Provides a tactical space combat experience that emphasizes ship-to-ship engagement and fleet maneuvering.
- #15 Forged Battalion
87% 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 71.7%, Strategy 23.2%, Indie 3.6%, Singleplayer 1.5%
Why You'll Like It: Offers a highly customizable RTS experience where players can design their own units and factions.
- #16 Etherium
88% 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 37.2%, Sci-fi 27.6%, Strategy 22.8%, Space 11.7%, Singleplayer 0.8%
Why You'll Like It: A sci-fi RTS that features intense resource management and weather-based tactical challenges.
- #17 8-Bit Armies
86% 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 55.2%, Strategy 30.5%, Base Building 7.9%, Indie 4.6%, Retro 1.1%
Why You'll Like It: It provides a fast-paced, accessible RTS experience that captures the spirit of classic base-building games.
- #18 Galaxy Reavers
86% 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 39.2%, Space 23.6%, Strategy 22.7%, Sci-fi 11.6%, Indie 2.8%
Why You'll Like It: Focuses on real-time tactical space combat with a strong emphasis on ship loadouts and positioning.
- #19 Dust Fleet
83% 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 26.3%, Sci-fi 20.2%, Strategy 20%, RTS 19.1%, Base Building 6.4%
Why You'll Like It: A space RTS that emphasizes fleet customization and tactical decision-making in a sci-fi setting.
- #20 STAR WARS™ Empire at War - Gold Pack
82% 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 37.8%, Moddable 19.5% ★, Strategy 16.4%, Space 14.5%, Sci-fi 9.9%
Why You'll Like It: Combines space fleet combat with ground-based RTS elements, offering a comprehensive strategic experience.
- #21 Earth 2160
84% 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 45.3%, Space 21.2%, Base Building 14.6%, Strategy 14.4%, Aliens 2.5%
Why You'll Like It: A classic sci-fi RTS that features deep base-building and research trees similar to Five Nations.
- #22 Dune: Spice Wars
81% 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 44.7%, Sci-fi 20.7%, Strategy 14.4%, Base Building 12.5%, Singleplayer 4.9%
Why You'll Like It: While it incorporates 4X elements, its real-time tactical combat and resource management feel very familiar to RTS fans.
- #23 Distant Worlds 2
82% matchMostly Positive71% of 3,478 reviews2022
Dev: CodeForcePub: Slitherine Ltd.
Windows
Median: 9.3 hrsMean: 42.6 hrs≥1hr: 75%
Distant Worlds 2 is a vast, pausable real-time 4X space strategy game.
Why similar: Strategy 35.6%, Space 30.6%, Sci-fi 23.8%, Combat 6.8%, Singleplayer 3.3%
Why You'll Like It: Offers an incredibly deep space strategy experience for those who enjoy the management aspects of Five Nations.
- #24 Meridian: Squad 22
84% 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 49.7%, Strategy 41.8%, Indie 8.6%
Why You'll Like It: An indie sci-fi RTS that focuses on mission-based tactical combat and unit management.
- #25 Interstellar Space: Genesis
80% 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 34.8%, Strategy 27.2%, Sci-fi 27%, Indie 6%, Singleplayer 5%
Why You'll Like It: A turn-based 4X game that captures the sci-fi exploration and empire-building spirit of the genre.
- #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 30.1% ★, RTS 26.2%, Artificial Intelligence 8.7%, Base Building 8.7%, Strategy 8.3%
Why You'll Like It: An action-RTS hybrid that challenges players to manage bases and units under high-pressure conditions.
- #27 Astra Exodus
81% 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 64.1%, Indie 14.7%, Sci-fi 11.1%, Old School 8%, Singleplayer 2.1%
Why You'll Like It: While it leans into 4X, its real-time tactical combat segments provide a satisfying challenge for strategy fans.
- #28 Executive Assault 2
77% 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 36.6%, Action RTS 21.7% ★, Space 12.5%, Strategy 10.3%, Base Building 9.5%
- #29 Xeno Command
78% matchVery Positive84% of 55 reviews2022
Dev: ChillyRoomPub: ChillyRoom
Windows
Defend galaxy against Alien invasion in the RTS offline game with roguelike fun
Why similar: Action RTS 34.1% ★, RTS 22.8%, Aliens 8.6%, Space 8%, Strategy 7.7%
Why You'll Like It: A fast-paced action-RTS that simplifies base-building to focus on tactical combat against alien threats.
- #30 SunAge: Battle for Elysium
79% 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 31.7%, Isometric 14.7%, Strategy 10.8%, Sci-fi 10.8%, Base Building 9.8%
Why You'll Like It: A classic-style sci-fi RTS that emphasizes base-building and resource collection across distinct factions.
- #31 BlackChain
78% matchVery Positive86% of 120 reviews2021
Dev: Borington
Windows
A classic single-player RTS set in a Solar System ruled by megacorporations. Journey from Mars all the way to Planet 9 and uncover the secrets of the BlackChain.
Why similar: RTS 23.7%, Action RTS 22.7% ★, Space 9.3%, Sci-fi 7.9%, Base Building 7.2%
- #32 Terra Invicta
73% matchVery Positive81% of 9,023 reviews2026
Dev: Pavonis InteractivePub: Hooded Horse
Windows
Median: 9.5 hrsMean: 51.4 hrs≥1hr: 80%
An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.
Why similar: RTS 40.4%, Moddable 38.3% ★, Strategy 17.6%, Singleplayer 3.6%
- #33 Halcyon 6: Starbase Commander
76% matchVery Positive84% of 1,312 reviews2016
Dev: Massive Damage, Inc.
Windows · Mac · Linux
Median: 4.7 hrsMean: 6.7 hrs≥1hr: 93%
Halcyon 6: Starbase Commander is a retro space strategy RPG with base building, deep tactical combat, crew management and emergent storytelling.
Why similar: Space 38.8%, Strategy 33.8%, Base Building 18.3%, Indie 5.9%, Singleplayer 3.2%
- #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 32.4%, Space 26.9%, Strategy 23.7%, Sci-fi 13.7%, Indie 3.3%
- #35 Annihilate The Spance
72% 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 39.5%, Space 19.3%, Base Building 13.7%, Strategy 10.6%, Sci-fi 10.2%
- #36 8-Bit Invaders!
75% matchVery Positive83% of 444 reviews2016
Dev: Petroglyph
Windows
Median: 4.1 hrsMean: 6.1 hrs≥1hr: 78%
8-Bit Invaders! is a fast-paced, retro Real-Time Strategy game for the PC. Control the military might of the Galactic Marine Corps or Invade with the devastating power of the Cranioids! Mine, Build, and Fight your way to victory! Conquering the Multiverse was never so easy.
Why similar: RTS 45.8%, Strategy 19.7%, Aliens 14.3%, Sci-fi 9.2%, Retro 4.8%
- #37 Xenonauts
74% matchVery Positive87% of 5,012 reviews2014
Dev: Goldhawk Interactive
Windows · Mac · Linux
Median: 8.2 hrsMean: 19.7 hrs≥1hr: 88%
Xenonauts is a strategy game in which you control a multi-national military organisation defending a Cold War-era Earth from alien invasion, using small squads of persistent soldiers to eliminate the extraterrestrials and recover their technology in turn-based ground combat.
Why similar: Aliens 24%, Isometric 20.3%, Base Building 17.4%, Strategy 16.4%, Sci-fi 14.8%
- #38 ERA ONE
71% 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: Action RTS 36.4% ★, RTS 27.5%, Space 12.9%, Base Building 7.9%, Strategy 7.8%
- #39 UFO: Aftermath
76% matchMostly Positive78% of 333 reviews2014
Dev: Altar InteractivePub: Fulqrum Publishing
Windows
Median: 54 minMean: 10.0 hrs≥1hr: 47%
UFO: Aftermath is a 3D isometric, tactical strategy game with a rich and compelling sci fi story.
Why similar: Strategy 45.5%, Aliens 23.6%, Sci-fi 14.9%, Space 12.4%, Singleplayer 3.6%
- #40 Sins of a Solar Empire II
71% 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 35.1%, Space 21.8%, Strategy 13.9%, Sci-fi 10.9%, Isometric 7.3%
- #41 Industries of Titan
73% 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: Space 23%, Strategy 19.7%, City Builder 18.8%, Sci-fi 18.1%, Base Building 16.9%
- #42 Pax Nova
75% matchMixed57% of 447 reviews2020
Dev: Grey Wolf EntertainmentPub: Iceberg Interactive
Windows
Median: 4.4 hrsMean: 6.5 hrs≥1hr: 88%
A sci-fi turn-based 4X strategy game where you lead the fate of one of several factions divided between three races. Explore new worlds and new star systems filled with exciting secrets as well as dangers. Build cities, expand your influence and fight great battles on land and in space.
Why similar: Space 33.4%, Strategy 30.2%, Sci-fi 27.8%, Singleplayer 4.6%, Indie 4%
- #43 Planets Under Attack
74% 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 90.3%, Space 4.7%, Sci-fi 2.7%, Indie 2.3%
- #44 Distant Worlds: Universe
73% matchMostly Positive75% of 1,845 reviews2014
Dev: Code ForcePub: Slitherine Ltd.
Windows
Median: 2.9 hrsMean: 23.9 hrs≥1hr: 59%
Distant Worlds is a vast, pausable real-time 4X space strategy game. Experience the full depth and detail of turn-based strategy, but with the simplicity and ease of real-time, and on the scale of a massively-multiplayer online game.
Why similar: Space 27.7%, Strategy 21.8%, RTS 19.9%, Sci-fi 15%, Moddable 12.8% ★
- #45 Moduwar
69% matchVery Positive89% of 124 reviews2025
Dev: Biohex StudiosPub: Firesquid
Windows · Linux
Moduwar is an adaptive organic RTS where you control an alien creature, Modu - and your body is your army. Grow new organs, split, merge and mutate them into unique units that adapt to your needs as you fight against human and alien threats in single and multiplayer modes.
Why similar: RTS 26.1%, Action RTS 25.1% ★, Aliens 12.5%, Isometric 10.1%, Sci-fi 8.3%
- #46 Sins of a Solar Empire: Trinity®
71% 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: RTS 27.8%, Moddable 20.6% ★, Space 12.6%, Aliens 11.8%, Sci-fi 9.4%
- #47 Executive Assault
70% 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 55.4%, Strategy 20.7%, Sci-fi 10.3%, Base Building 9.9%, Singleplayer 1.9%
- #48 StarDrive
72% matchMixed45% of 1,482 reviews2013
Dev: Zero Sum Games
Windows
Median: 2.3 hrsMean: 6.7 hrs≥1hr: 88%
As a space bear, human or any other race, venture forth into the galaxy, create custom ships, conquer new worlds, build new colonies and defend your very existence against those who would take what is yours.
Why similar: RTS 34%, Space 24.4%, Strategy 23.9%, Sci-fi 12.9%, Indie 3.8%
- #49 Nations
66% matchVery Positive87% of 95 reviews2025
Dev: Krzysztof SteinerPub: Krzysztof Steiner Games
Windows
Select an era, a nation and lead it to greatness or decay. Develop the economy and society, or focus on military and territorial expansion. In Nations you can rule your people for centuries – from ancient times to the modern day and beyond. You shape your state, history and map of the world.
Why similar: RTS 35%, Action RTS 28.2% ★, Strategy 17.8%, Moddable 14.2% ★, Combat 2.6%
- #50 WARSHIFT
69% 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 54.6%, Strategy 21.8%, Sci-fi 12.9%, Violent 6.8%, Indie 4%
- #51 Starport Delta
69% matchMostly Positive72% of 75 reviews2020
Dev: Cloudfire Studios
Windows
Build amongst the stars in Starport Delta, a light sci-fi strategy game that focuses on survival. Station Commanders across the universe will turn to you for guidance to expand, defend, and survive. Help them build a thriving station, but watch out, there are many dangers hiding in space...
Why similar: RTS 23.9%, Strategy 23.9%, Space 13.1%, Sci-fi 8.9%, Base Building 8.6%
- #52 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: Isometric 18.2%, Aliens 17.7%, Space 15.6%, Sci-fi 15.1%, Strategy 14.3%
- #53 PERIMETER: Legate Edition
65% 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 35.4% ★, RTS 29.9%, Space 10.9%, Strategy 10.7%, Sci-fi 7.9%
- #54 Iron Marines
67% 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 41.6%, Aliens 14.6%, Sci-fi 13%, Strategy 12.9%, Space 10.5%
- #55 The Last Federation
68% matchMostly Positive75% of 502 reviews2014
Dev: Arcen Games
Windows · Mac · Linux
Median: 3.5 hrsMean: 5.1 hrs≥1hr: 90%
From the creators of AI War: Fleet Command comes an all-new grand strategy title with turn-based tactical combat, set in a deep simulation of an entire solar system and its billions of inhabitants. You are the last of a murdered race, determined to unify or destroy the 8 others.
Why similar: Space 35.9%, Strategy 34.5%, Sci-fi 15.3%, Aliens 8.1%, Indie 4.5%
- #56 Battlezone 98 Redux
66% matchVery Positive91% of 1,119 reviews2016
Dev: Big Boat InteractivePub: Rebellion
Windows · Mac
Median: 4.5 hrsMean: 8.4 hrs≥1hr: 79%
One of the greatest sci-fi strategy games of all time returns with remastered visuals, online multiplayer and near unlimited mod content from Steam Workshop. Experience thrilling first person action and acclaimed RTS in this explosive alternate vision of the 1960s space race.
Why similar: RTS 39.1%, Strategy 18.3%, Sci-fi 13.9%, 1990's 13.2%, Space 8.2%
- #57 Sol 0: Mars Colonization
68% 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: Strategy 36.9%, Space 34%, Base Building 22.2%, Indie 6.9%
- #58 Galactic Civilizations® I: Ultimate Edition
70% matchMixed50% of 300 reviews2012
Dev: Stardock Entertainment
Windows
Median: 6 minMean: 8.3 hrs≥1hr: 24%
Galactic Civilizations is a space based strategy game in which you are in control of humanity's destiny.
Why similar: Space 21%, Aliens 21%, Artificial Intelligence 20.5%, Strategy 18.6%, Sci-fi 16%
- #59 Gemini Wars
70% 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: RTS 33.9%, Space 17.2%, Aliens 12.1%, Base Building 11.1%, Strategy 10.6%
- #60 Element
68% 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 43%, Space 17.4%, Sci-fi 13.6%, Strategy 13.2%, Base Building 10.3%