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Games Like PlanetX

60+ similar titles based on shared tags and player behavior. Themes include Strategy, City Builder, Building, Sci-fi.

PlanetX header art

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.

Reviews: Mixed — 66% — of 50 reviews
Released: 2025-04-18
Developer: Giedrius Talzunas
Genres: Indie, Massively Multiplayer, Strategy, Free To Play
Platforms: Windows, Mac

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  1. #1 Planet S
    97% 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: City Builder 26.1%, RTS 21.2%, Building 11.4%, Space 9.7%, Futuristic 9%

  2. #2 Relentless Expanse
    96% matchVery Positive90% of 102 reviews2025
    Dev: Cowmera Games
    Windows

    Capture and upgrade planets, outsmart your enemies, and conquer the galaxy! Simple yet addicting, you can play alone or outsmart your friends in this 2D top-down space RTS. Completely free, no monetization, just fun!

    Why similar: Grand Strategy 25.7%, RTS 20.8%, Economy 9.8%, Space 8.6%, Strategy 8.5%

  3. #3 Planetbase
    96% matchMostly Positive80% of 10,262 reviews2015
    Dev: Madruga Works
    Windows · Mac
    Median: 8.2 hrsMean: 26.2 hrs≥1hr: 90%

    Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.

    Why similar: Colony Sim 34.3%, City Builder 26.9%, Space 9.2%, Base Building 8.2%, Strategy 6.7%

  4. #4 My Colony
    95% matchVery Positive90% of 263 reviews2018
    Dev: Ape Apps
    Windows · Mac · Linux

    Build, expand, and rule a growing space colony. Explore tech, trade, and multiplayer.

    Why similar: Colony Sim 46.9%, City Builder 43.6%, Strategy 9.2%, Indie 0.4%

  5. #5 Project Rebearth
    94% matchMostly Positive73% of 154 reviews2026
    Dev: Program Sam
    Windows · Mac · Linux

    A massive online multiplayer where everyone plays on an exact replica of planet earth. The game is set 1000 years into the future where you rebuild society. Grow your town, trade with other players, face challenges and discover the rich history of this suspiciously empty planet.

    Why similar: Grand Strategy 35%, City Builder 29.1%, Building 11.6%, Strategy 10%, Base Building 5.8%

  6. #6 Nova Empire
    94% matchMixed53% of 283 reviews2022
    Dev: Gamebear Tech
    Windows
    Median: 1.9 hrsMean: 12.5 hrs≥1hr: 57%

    Build up a Space Empire and establish control of the Galaxy and the Universe! Nova Empire is a multiplayer space game in which the aim is to build your empire and conquer the galaxy in epic space battles against your rivals with other allies worldwide!

    Why similar: Strategy 24.7%, Sci-fi 19.7%, PvP 17.3%, Base Building 14.7%, 3D 9.7%

  7. #7 Planetary Annihilation: TITANS
    93% 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 24.1%, Grand Strategy 20.4%, Building 9.4%, War 9%, Strategy 8%

  8. #8 War Planet Online: Global Conquest
    92% matchMixed63% of 961 reviews2017
    Dev: Gameloft
    Windows
    Median: 1.7 hrsMean: 34.4 hrs≥1hr: 59%

    Build your army, dominate your region and lead your alliance to conquer the globe!

    Why similar: RTS 24.4%, Building 20.9%, War 17.4%, Strategy 12.9%, Massively Multiplayer 11.5%

  9. #9 Build Master: MarsVille
    91% matchMixed50% of 290 reviews2023
    Dev: FIRST FUN HONG KONG LIMITED
    Windows

    Build Master: MarsVille is a city-building and strategy game that invites you to create your Martian colony with your engineering genius and building skills. Form alliances, trade resources, and conquer rival colonies. Embrace the challenge and become the ultimate Build Master on Mars!

    Why similar: Colony Sim 26.7%, City Builder 21.5%, War 10.5%, Building 10.1%, Base Building 6.6%

  10. #10 Aven Colony
    91% matchMostly Positive72% of 2,731 reviews2017
    Dev: Mothership Entertainment LLCPub: Team17 Digital Ltd
    Windows
    Median: 4.2 hrsMean: 8.2 hrs≥1hr: 90%

    Build a new home for humanity in Aven Colony. Discover Aven Prime - an alien planet of deserts, tundras, and wetlands light years from earth. Build your colonies into massive, sprawling cities whilst dealing with the challenges faced when settling on a new world.

    Why similar: Colony Sim 41%, City Builder 31.9%, Strategy 8.7%, Sci-fi 6.5%, Base Building 5.8%

  11. #11 World Of Conquerors
    90% matchMixed61% of 98 reviews2019
    Dev: HuntahPub: Darkness Development
    Windows

    Build your cities, manage resources, train soldiers and fight for supremacy in a vast world with other player controlled empires

    Why similar: Strategy 50.5%, Massively Multiplayer 47.4%, Indie 2.1%

  12. #12 Anno 2205™
    89% matchMostly Positive70% of 6,263 reviews2015
    Dev: Blue BytePub: Ubisoft
    Windows
    Median: 10.1 hrsMean: 54.9 hrs≥1hr: 89%

    In Anno 2205™, you join humankind‘s next step into the future with the promise to build a better tomorrow. You conquer Earth, establishing rich, bustling cities and grand industrial complexes, but to secure the prosperity of your people, you must travel into space.

    Why similar: City Builder 33.9%, Economy 11.6%, Strategy 10.2%, Futuristic 9.8%, RTS 9.7%

  13. #13 Offworld Trading Company
    89% matchMostly Positive77% of 5,669 reviews2016
    Dev: Mohawk GamesPub: Stardock Entertainment
    Windows · Mac
    Median: 3.6 hrsMean: 34.8 hrs≥1hr: 89%

    Mars has been colonized, and Earth's corporate titans fight to dominate this new market. Competition is fierce in this fast-paced economic RTS from Civilization IV Lead Designer, Soren Johnson.

    Why similar: Colony Sim 24.7%, City Builder 19.8%, Economy 13.4%, Strategy 7.2%, Sci-fi 6.5%

  14. #14 Reshaping Mars
    87% 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: Colony Sim 18.9%, Grand Strategy 17.8%, RTS 15.8%, Building 8.9%, City Builder 7.1%

  15. #15 Oasis Mission: Colony Sim
    86% matchMixed63% of 114 reviews2025
    Dev: Lunar pug studio
    Windows · Mac

    A Sci-Fi colony and strategy sim with a complex economy, immersive logistics, and a war against the rise of the machines! Build your colony and ensure supplies for your people. Automate industrial ships and create combat groups to defend against waves of enemies.

    Why similar: Colony Sim 23%, City Builder 18.9%, RTS 14%, Economy 10.1%, Building 8.6%

  16. #16 Exogate Initiative
    86% matchMostly Positive76% of 699 reviews2025
    Dev: Xeno Bits
    Windows

    Build and manage mankind’s first mission across the universe! Create a sprawling facility underground, recruit a diverse group of specialists from around the globe and explore mysterious new worlds through the Exogate.

    Why similar: Colony Sim 21.6%, City Builder 19.4%, RTS 14.9%, Building 10%, Base Building 6.7%

  17. #17 Alien Horizon (Preview Alpha)
    85% matchVery Positive87% of 188 reviews2024
    Dev: Purple Nebula
    Windows

    A sci-fi survival city builder set on an inhospitable alien planet. Faced with imminent destruction of Earth, humanity pooled together their resources and sent sleeper ships to nearby potentially habitable planets. But this one turned out to be much less habitable than expected....

    Why similar: Colony Sim 31.4%, City Builder 28.7%, Building 11.9%, Strategy 8.6%, Base Building 6.5%

  18. #18 Illyriad - Grand Strategy MMO
    84% matchMixed68% of 201 reviews2017
    Dev: Illyriad Games
    Windows
    Median: 6.7 hrsMean: 14.2 hrs≥1hr: 96%

    Build a city, Create an Empire! Research 400+ technologies, and Build 70+ buildings, Craft and Trade 380+ items in an entirely player driven market. Fight Wars and Forge Alliances with thousands of players and create your own Empire in this award-winning, critically-acclaimed MMO.

    Why similar: Grand Strategy 29.9%, City Builder 24%, Economy 13.7%, Strategy 11.2%, Massively Multiplayer 9.9%

  19. #19 Andromeda: Rebirth of Humanity
    84% matchMixed65% of 116 reviews2021
    Dev: Null Reference Games
    Windows · Linux

    Andromeda is a hybrid between a space 4X and an MMO for Android and PC. Get dropped into an online universe sandbox with 2 galaxies full of planets to colonize. Build structures like Mines to generate resources to build ships and engage in fleet battles with NPCs and other players.

    Why similar: Colony Sim 34.5%, Strategy 14.4%, Futuristic 9.3%, Building 9%, Space 8.1%

  20. #20 Prosperous Universe
    82% matchMostly Positive74% of 1,030 reviews2022
    Dev: simulogics
    Windows

    In Prosperous Universe start your galactic empire by trading on the real-time market exchange with other real players. Build your 1st base from humble beginnings & watch as your business flourishes with complex supply chain strategies. Economics, politics & realism fuel this immersive business MMO.

    Why similar: Economy 21.8%, Building 13.3%, Space 11%, Base Building 10.3%, Trading 9.5%

  21. #21 Anno 2070™
    83% matchMixed60% of 12,622 reviews2011
    Dev: Blue BytePub: Ubisoft
    Windows
    Median: 10.5 hrsMean: 30.9 hrs≥1hr: 90%

    Build your society of the future, colonize islands, and create sprawling megacities with multitudes of buildings, vehicles, and resources to manage.

    Why similar: City Builder 39.4%, RTS 14.2%, Strategy 13.1%, Economy 10%, Futuristic 9.6%

  22. #22 Project Entropy
    82% matchMixed52% of 220 reviews2024
    Dev: FunPlus International AG
    Windows

    Welcome, commander, to Project Entropy- an ultimate Sci-Fi and role-playing game with battles in space. In this immersive MMO experience, you will command alien civilizations, conquer uncharted planets, and build Hero fleets.

    Why similar: Grand Strategy 43.4%, Strategy 16%, Base Building 14.9%, Sci-fi 14.1%, PvP 10.5%

  23. #23 Pixel Starships
    81% matchMostly Positive73% of 2,914 reviews2023
    Dev: SavySoda
    Windows · Mac · Linux
    Median: 2.3 hrsMean: 24.8 hrs≥1hr: 64%

    Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven.

    Why similar: Building 22.2%, Space 19%, Base Building 15.1%, Strategy 15%, Sci-fi 14.2%

  24. #24 Sins of a Solar Empire II
    78% 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 34.8%, Space 20.7%, Strategy 15.2%, Sci-fi 10%, PvP 6.9%

  25. #25 Imagine Earth
    79% matchVery Positive82% of 952 reviews2021
    Dev: Serious Bros.
    Windows · Mac · Linux
    Median: 2.8 hrsMean: 5.4 hrs≥1hr: 83%

    Build your own global colonies on distant worlds. Manage energy and resource supplies and produce goods for space trade. Form economic and diplomatic alliances or take over competing corporations. Conduct research to protect your colonists from disasters and avoid a climate crisis.

    Why similar: Colony Sim 21.9%, Grand Strategy 21.8%, City Builder 17.4%, RTS 14.7%, Economy 10.3%

  26. #26 Galaxy Control: 3D Strategy
    81% matchMixed59% of 530 reviews2016
    Dev: FX Games Media
    Windows · Mac
    Median: 1.1 hrsMean: 25.0 hrs≥1hr: 51%

    Build your base and battle with other players to control the galaxy! Galaxy Control is an ultimate space combat strategy game with fast-paced combats! Gather minerals and extract uranium, defend your base with laser towers, missile turrets, cannons, walls and mines.

    Why similar: Strategy 41.6%, Massively Multiplayer 31.8%, Space 26.6%

  27. #27 Star Ruler 2
    80% 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 40.1%, Space 22.6%, Strategy 22.5%, Sci-fi 14.2%, Indie 0.5%

  28. #28 Citizens: On Mars - Prologue
    79% matchMostly Positive73% of 74 reviews2023
    Dev: Redkar LimitedPub: CreativeForge Games
    Windows

    Experience the ultimate turn-based colony building game in Citizens: On Mars - Prologue! As the leader of a fledgling Martian settlement, your mission is to develop a thriving colony amidst the harsh and unforgiving environment of the Red Planet.

    Why similar: Colony Sim 33.4%, City Builder 27.8%, Strategy 14.4%, Futuristic 7.4%, Space 5%

  29. #29 Solargene
    76% 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: Colony Sim 27.4%, City Builder 20.5%, Economy 11.4%, Building 9.4%, Base Building 7.2%

  30. #30 Per Aspera
    78% 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: Colony Sim 28.7%, City Builder 23.8%, Building 11.9%, Space 8%, Base Building 7.9%

  31. #31 Industries of Titan
    77% 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: Colony Sim 26.7%, City Builder 24%, Building 10.4%, Futuristic 7.3%, Space 7.2%

  32. #32 Galcon 2: Galactic Conquest
    77% matchVery Positive83% of 865 reviews2014
    Dev: Hassey Enterprises, Inc.
    Windows · Mac · Linux
    Median: 42 minMean: 6.2 hrs≥1hr: 41%

    Galcon 2 is a demolition derby in space! Send swarms of ships from planet to planet to conquer the galaxy in this fast paced multiplayer strategy game!

    Why similar: Strategy 29.3%, RTS 24.9%, Space 15.8%, Futuristic 9.6%, PvP 5.5%

  33. #33 EarthX
    74% matchVery Positive88% of 905 reviews2023
    Dev: DenisPub: Mesote Games
    Windows · Mac · Linux
    Median: 6.3 hrsMean: 12.8 hrs≥1hr: 93%

    EarthX is a rocket company management game. Go from launching small rockets on Earth to eventually building a colony on Mars. Create your own Internet constellation, develop new technologies, supply the International Space Station and terraform Mars!

    Why similar: Grand Strategy 27.9%, Colony Sim 27.1%, Building 13%, Space 11.1%, Strategy 8.9%

  34. #34 Dune: Spice Wars
    73% 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: Grand Strategy 24.4%, RTS 17.7%, Economy 12.5%, Building 10%, War 9.4%

  35. #35 War Selection
    73% matchVery Positive85% of 23,033 reviews2019
    Dev: Glyph Worlds
    Windows · Linux
    Median: 2.5 hrsMean: 27.4 hrs≥1hr: 70%

    War Selection is a compelling RTS game featuring base building, resource extraction and warfare. Evolve from a stone age tribe to a distinct industrial nation with unique game mechanics and battle for supremacy with dozens of players on a unique procedurally generated map.

    Why similar: RTS 37.9%, Strategy 17.9%, Base Building 17%, War 12.9%, Massively Multiplayer 6.2%

  36. #36 VEGA Conflict
    76% matchMixed58% of 4,985 reviews2015
    Dev: KIXEYE
    Windows · Mac
    Median: 2.7 hrsMean: 90.8 hrs≥1hr: 63%

    Stake your claim, command your fleets, and wage epic war in space.

    Why similar: RTS 24%, Space 17.3%, Strategy 11.9%, War 11.3%, Massively Multiplayer 10.9%

  37. #37 Solaris
    75% matchVery Positive81% of 86 reviews2021
    Dev: SpacialCircumstances
    Windows · Mac · Linux

    Discover a space strategy game filled with conquest, betrayal and subterfuge. Build alliances, make enemies and fight your way to victory and galactic domination. Will you conquer the galaxy?

    Why similar: Strategy 44.9%, War 24.1%, Sci-fi 18.6%, PvP 10.5%, Multiplayer 1.8%

  38. #38 [MARS] Total Warfare
    75% matchMostly Positive71% of 117 reviews2018
    Dev: TCR
    Windows

    [MARS] Total Warfare uses authentic Martian landscapes to create an intense RTS experience best described as a hybrid between team multiplayer and massively multiplayer online. Fight over natural resources vs human or AI opponents and conquer a crater ridden world, with pink sky and blue seas!

    Why similar: Strategy 54.7%, Massively Multiplayer 45.3%

  39. #39 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: RTS 33.3%, Futuristic 15.3%, Strategy 13.1%, Space 11.6%, Sci-fi 8.1%

  40. #40 A Planet of Mine Legacy
    74% 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: Colony Sim 40.1%, Building 17.7%, Base Building 10.8%, Space 10%, Strategy 8.1%

  41. #41 EDYN
    71% matchMostly Positive71% of 51 reviews2024
    Dev: GALESTORM GAMES
    Windows · Mac

    Join the battle for EDYN, the ultimate multiplayer strategy game. Build settlements, command armies, and unify the realms in epic PvP warfare to etch your legacy into history. Raid, loot, make alliances, and unite to conquer the planet itself, with no Pay-To-Win mechanics to upset the playing field.

    Why similar: Strategy 52.6%, Massively Multiplayer 47.4%

  42. #42 Moons of Ardan
    71% matchVery Positive96% of 92 reviews2021
    Dev: Pandora Technology
    Windows

    Embark on a space city-building adventure in Moons of Ardan! Develop a thriving civilization in a real-time planetary system. Oversee production chains, cater to the needs of your axonauts, recover their lost technologies, and navigate resource transportation.

    Why similar: Colony Sim 27.7%, City Builder 23.4%, Economy 13.5%, Building 11.4%, Space 8.4%

  43. #43 M.A.X.: Mechanized Assault & Exploration
    72% 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 43.4%, RTS 27%, Futuristic 17.1%, Sci-fi 12.5%

  44. #44 Galaxy Reavers
    73% 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 39.9%, Strategy 25.6%, Space 23.1%, Sci-fi 10.9%, Indie 0.6%

  45. #45 3 Days War
    69% matchVery Positive84% of 707 reviews2023
    Dev: 荆棘鸟工作室
    Windows

    3 Days War is a unique multiplayer strategy war game. Integrating the mechanics of RTS+4X, it allows dozens of players to engage in a three-day real-time strategy competitionon. Commanders, use your skills, strategies, games and even deception to become the ultimate winner!

    Why similar: Grand Strategy 29%, RTS 21.2%, City Builder 20.8%, War 7.8%, PvP 6.4%

  46. #46 The Final Earth 2
    69% matchVery Positive97% of 386 reviews2022
    Dev: Florian van Strien
    Windows

    The Final Earth 2 is a vertical sci-fi city builder. Earth is unlivable, so you decide to create a space colony. Gather resources, then build and research your way to a better future! Grow your city from an exploration ship to a huge metropolis, full of advanced technology. What will you build?

    Why similar: Colony Sim 31.7%, City Builder 15.2%, Building 11.5%, Space 9.1%, Futuristic 8.5%

  47. #47 Element
    70% matchMixed68% of 50 reviews2018
    Dev: Flightless
    Windows · Mac · Linux
    Median: 4.0 hrsMean: 6.7 hrs≥1hr: 91%

    Element is a realtime strategy space game for people who don't have time to play realtime strategy space games. Generate energy, mine element, build attack and defence units, and destroy the enemy while maintaining a balance between earth, air and water.

    Why similar: RTS 21.5%, Grand Strategy 20.8%, Building 10.2%, War 10.1%, Space 8.3%

  48. #48 Pax Nova
    70% 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: Grand Strategy 45%, Building 16.6%, Strategy 14%, Space 13.4%, Sci-fi 10.7%

  49. #49 Operation: New Earth
    70% matchMixed61% of 819 reviews2016
    Dev: Hunted Cow Games
    Windows · Mac
    Median: 2.4 hrsMean: 36.1 hrs≥1hr: 63%

    Operation: New Earth is an intense sci-fi multiplayer strategy game in which you must command an advanced military facility to defend Earth from a hostile alien invasion. Create an alliance, gather resources, and unlock advanced technology to level up your stronghold!

    Why similar: Strategy 39.5%, Massively Multiplayer 27.6%, Futuristic 17%, Sci-fi 13.6%, Multiplayer 2.3%

  50. #50 Galactic Ruler
    69% matchMixed49% of 121 reviews2022
    Dev: BattleGoat Studios
    Windows
    Median: 3.4 hrsMean: 7.1 hrs≥1hr: 96%

    Galactic Ruler offers real time strategy game play at both planetary level and in space! Lead your faction in diplomacy or conquest across a procedurally generated galactic map where any system might hold hostile enemies or resource riches. Develop advanced technologies to rule the galaxy!

    Why similar: Grand Strategy 38.9%, RTS 22.9%, Space 13.6%, Sci-fi 8.4%, Strategy 7.6%

  51. #51 The Colonists
    68% matchVery Positive86% of 1,205 reviews2018
    Dev: CodebyfirePub: Mode 7
    Windows · Mac · Linux
    Median: 4.0 hrsMean: 13.0 hrs≥1hr: 85%

    Build a new home for your team of robots as they begin a new life for themselves on a distant planet where they can fulfil their ultimate dream: to be human.

    Why similar: Colony Sim 28.3%, City Builder 23.8%, Economy 14.2%, Building 11.6%, Base Building 6%

  52. #52 Star Sonata 2
    68% matchMixed68% of 289 reviews2020
    Dev: Landauer Games
    Windows
    Median: 2.1 hrsMean: 59.8 hrs≥1hr: 60%

    Star Sonata 2 is a space sandbox MMO that combines elements of action, RPG, and empire creation into a truly unique MMO. Explore the sandbox style universe, build persistent bases, construct trade ships, and even fight your way to the top and claim the Emperor’s Throne!

    Why similar: Building 27.7%, Space 24.1%, Base Building 19.3%, Trading 16.8%, PvP 12.2%

  53. #53 Stellar Settlers: Space Base Builder
    65% matchMostly Positive71% of 818 reviews2025
    Dev: Tinymice EntertainmentPub: Rogue Duck Interactive
    Windows · Mac · Linux
    Median: 2.4 hrsMean: 3.5 hrs≥1hr: 76%

    Stellar Settlers is a chill space base/city builder and colony sim game. With unique vertical and horizontal base-building gameplay, settle on 10 hostile alien planets and build your own thriving colony. Get enough materials to build a physics-based Spaceship and try to escape from disasters.

    Why similar: Colony Sim 30%, City Builder 24.5%, Building 10.9%, Base Building 8.1%, Economy 7.3%

  54. #54 Instant War
    67% matchMixed67% of 85 reviews2022
    Dev: Playwing LTD
    Windows

    Embark on a military strategy 4X RTS game, in a world where your battle tactics and your massive army are the keys to victory. Instant War delivers an amazing battlefield experience in a realistic military game. As a commander, you develop your military base and lead your army to victory!

    Why similar: Grand Strategy 40.4%, Futuristic 12.3%, Strategy 12.1%, War 10.5%, RTS 6%

  55. #55 SUPREMACY: WORLD WAR 3
    66% matchMostly Positive75% of 5,805 reviews2018
    Dev: Dorado Games
    Windows · Mac
    Median: 2.1 hrsMean: 36.3 hrs≥1hr: 60%

    This Long Term Strategy Game lets you take control of the armed forces of your nation. Become responsible for its military expansion, technological research and economic development. Form alliances and wage total war for global dominance on the battlefields of World War 3.

    Why similar: Grand Strategy 43.9%, RTS 22.4%, Strategy 16.3%, Massively Multiplayer 9.4%, Base Building 7.6%

  56. #56 Galaxy Life
    63% matchVery Positive92% of 8,424 reviews2022
    Dev: Phoenix Network
    Windows · Linux
    Median: 2.7 hrsMean: 35.4 hrs≥1hr: 65%

    The universe is full of Starlings, tiny orange aliens that want to take over the galaxy. Create your own space colony, fight epic battles and discover new planets. Train your soldiers, develop your technology and create unimaginable gadgets. Enjoy this huge social game with friends!

    Why similar: City Builder 52.4%, Strategy 17.5%, Base Building 11.5%, Sci-fi 10.2%, PvP 8.5%

  57. #57 Earth Space Colonies
    68% matchMixed50% of 167 reviews2016
    Dev: Persona and Pixel studio
    Windows · Mac · Linux
    Median: 3.0 hrsMean: 3.6 hrs≥1hr: 96%

    Earth Space Colonies is a strategy-simulation game where you build space colonies around the Solar system. Establish a first self-sustaining colony on the Red planet with ultimate goal of terraforming Mars. Play three story campaigns all at once: terraform Mars, fight on Ceres and explore Ganymede.

    Why similar: City Builder 50.8%, Strategy 26%, Space 22.2%, Indie 1%

  58. #58 Taking London
    63% matchVery Positive85% of 65 reviews2025
    Dev: Pink Pegasus Games
    Windows · Linux

    A love letter to old-school browser-based RTS MMOs – with charming nostalgic pixel graphics, a dash of political satire, and tonnes of strategic tension. Build your empire, face off against other players, and take what’s yours in true British imperial style: by dominating the map.

    Why similar: Grand Strategy 23.3%, City Builder 19%, Colony Sim 18.4%, RTS 18.3%, Strategy 5.7%

Based on tag similarity + player behavior
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