- #1 Dyson Sphere Program
97% matchOverwhelmingly Positive97% of 91,542 reviews2021
Dev: Youthcat StudioPub: Gamirror Games
Windows
Median: 13.0 hrsMean: 75.8 hrs≥1hr: 84%
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.
Why similar: Space 23.5%, City Builder 17.6%, Building 15.5%, Resource Management 9.4%, Sci-fi 7.9%
Why You'll Like It: It perfectly captures the scale of multi-planetary logistics and industrial automation found in Planet S.
- #2 Anno 2205™
96% matchMostly Positive70% of 6,333 reviews2015
Dev: Blue BytePub: Ubisoft
Windows
Median: 10.1 hrsMean: 54.3 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 34%, RTS 10%, Futuristic 9.8%, Space 9.7%, Strategy 8.6%
Why You'll Like It: It features complex multi-region city-building and supply chain management within a futuristic, space-faring setting.
- #3 Planetary Annihilation: TITANS
96% matchVery Positive84% of 14,686 reviews2015
Dev: Planetary Annihilation Inc
Windows · Mac · Linux
Median: 4.0 hrsMean: 17.7 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 29.7%, Real Time Tactics 12.8%, Space 12.4%, Building 11.6%, Multiplayer 8.9%
Why You'll Like It: This game offers the same multi-planet RTS combat and planetary-scale strategy that defines the core experience of Planet S.
- #4 Planetbase
94% matchMostly Positive80% of 10,422 reviews2015
Dev: Madruga Works
Windows · Mac
Median: 8.1 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: City Builder 38.2%, Space 20.7%, Strategy 8.1%, Building 7.9%, Resource Management 5.6%
Why You'll Like It: It is a foundational colony-sim that tasks players with managing a self-sufficient base on various alien worlds.
- #5 IXION
94% matchMostly Positive79% of 17,592 reviews2022
Dev: Bulwark StudiosPub: Kasedo Games
Windows
Median: 9.9 hrsMean: 30.7 hrs≥1hr: 90%
IXION is an unrelenting, city-building odyssey across the stars. As Administrator of the Tiqqun, DOLOS’ prototype space station, you are tasked with balancing preservation and exploration as you manage infrastructure, resources and crew. Can you keep the flame of humanity alight in the cold dark?
Why similar: City Builder 34%, Space 22.2%, Building 11.2%, Resource Management 9.1%, Strategy 8%
Why You'll Like It: It combines city-building and resource management with a high-stakes space survival narrative that feels atmospheric and demanding.
- #6 Space Haven
92% matchVery Positive86% of 11,081 reviews2026
Dev: Bugbyte Ltd.
Windows · Mac · Linux
Median: 4.2 hrsMean: 20.9 hrs≥1hr: 71%
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
Why similar: City Builder 25.1%, Space 17.1%, Building 13.8%, Management 8.6%, Sci-fi 8%
Why You'll Like It: This game offers deep colony management and ship-building mechanics with a strong emphasis on survival in deep space.
- #7 Offworld Trading Company
93% matchMostly Positive77% of 5,704 reviews2016
Dev: Mohawk GamesPub: Stardock Entertainment
Windows · Mac
Median: 3.6 hrsMean: 35.3 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: City Builder 25.8%, Space 13.5%, Multiplayer 9.8%, Sci-fi 9.6%, Resource Management 8.8%
Why You'll Like It: This economic RTS focuses on the competitive aspects of resource extraction and market manipulation on Mars.
- #8 The Universim
91% matchMostly Positive80% of 10,640 reviews2024
Dev: Crytivo
Windows · Mac · Linux
Median: 7.3 hrsMean: 34.0 hrs≥1hr: 89%
Jump straight into managing your own planets as you guide a civilization through the ages. Build the ultimate empire in The Universim, a new breed of God Game in development by Crytivo.
Why similar: City Builder 34%, Building 15.6%, Space 13.7%, Procedural Generation 8.5%, Management 7.6%
Why You'll Like It: It allows players to guide a civilization from the stone age to the space age, incorporating god-game elements with city-building.
- #9 Terra Invicta
91% matchVery Positive80% of 9,823 reviews2026
Dev: Pavonis InteractivePub: Hooded Horse
Windows
Median: 9.2 hrsMean: 52.6 hrs≥1hr: 79%
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: Space 42.8%, Management 24.6%, Strategy 22.8%, Simulation 5.1%, Singleplayer 4.7%
Why You'll Like It: It provides a grand-strategy perspective on solar system colonization and faction-based expansion.
- #10 Sins of a Solar Empire®: Rebellion
90% matchVery Positive93% of 16,336 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 28.3%, Space 19.9%, Multiplayer 12.8%, Management 10.8%, Sci-fi 10.2%
Why You'll Like It: This game excels at large-scale space RTS combat and empire management across multiple star systems.
- #11 Satisfactory
88% matchOverwhelmingly Positive97% of 278,339 reviews2024
Dev: Coffee Stain StudiosPub: Coffee Stain Publishing
Windows
Median: 33.2 hrsMean: 112.6 hrs≥1hr: 94%
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
Why similar: Building 30.2%, Multiplayer 24.3%, Resource Management 18.5%, Open World 9.7%, Sci-fi 6.8%
Why You'll Like It: This game brings the logistical challenges of factory building into a 3D environment with a focus on vertical expansion.
- #12 Anno 2070™
89% matchMixed60% of 12,702 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 39.8%, RTS 14.5%, Strategy 11.2%, Futuristic 9.8%, Multiplayer 5.8%
Why You'll Like It: This title offers a classic futuristic city-building experience with a heavy focus on environmental management and logistics.
- #13 Industries of Titan
89% matchMixed62% of 1,618 reviews2023
Dev: Brace Yourself Games
Windows
Median: 5.4 hrsMean: 14.4 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: City Builder 31.7%, Space 15.1%, Building 14%, Resource Management 10.4%, Futuristic 9.7%
Why You'll Like It: It features a unique aesthetic and city-building mechanics centered on industrial growth in a sci-fi setting.
- #14 Factorio
86% matchOverwhelmingly Positive98% of 233,774 reviews2020
Dev: Wube Software LTD.
Windows · Mac · Linux
Median: 44.8 hrsMean: 192.8 hrs≥1hr: 95%
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
Why similar: Resource Management 21.5%, City Builder 20.4%, Building 15.1%, Multiplayer 14.1%, Strategy 10.2%
Why You'll Like It: It is the gold standard for complex supply chain automation and base-building on an alien planet.
- #15 Starport Delta
87% 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: City Builder 18.2%, RTS 15.4%, Strategy 14.2%, Space 12.7%, Building 8.9%
Why You'll Like It: This game focuses on the strategic placement and management of a space station to ensure its survival.
- #16 Reshaping Mars
86% matchVery Positive84% of 832 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: RTS 23.6%, Building 13.4%, Space 13.1%, City Builder 10.3%, Futuristic 9.5%
Why You'll Like It: It focuses on the technical aspects of base-building and resource management on the Martian surface.
- #17 Before We Leave
85% matchMostly Positive78% of 1,727 reviews2021
Dev: Balancing Monkey GamesPub: Team17
Windows · Mac
Median: 3.5 hrsMean: 6.0 hrs≥1hr: 85%
Before We Leave is a city building game set in a cozy corner of the universe. Nurture your Peeps and their surroundings while rebuilding and rediscovering civilisation. Settle new lands and planets while avoiding hungry Space Whales.
Why similar: City Builder 29%, Space 15.1%, Building 13.1%, Hex Grid 9.5% ★, Resource Management 8.6%
Why You'll Like It: It is a relaxing, hex-based city-builder that focuses on expanding your civilization across multiple planets.
- #18 Exogate Initiative
83% matchMostly Positive76% of 727 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: City Builder 21.5%, RTS 16.8%, Building 11.3%, Space 10.8%, Resource Management 7.1%
Why You'll Like It: It focuses on the management and base-building aspects of operating a high-tech research facility.
- #19 Sphere - Flying Cities
84% matchMixed50% of 242 reviews2022
Dev: mañana studiosPub: Assemble Entertainment
Windows
Sphere – Flying Cities is a sci-fi citybuilder which combines strategy, simulation, and survival elements in an extraordinary and immersive scenario. Rebuild and protect a society in a unique and hostile environment. Pay the price for your decisions and be prepared to lose everything.
Why similar: City Builder 28.1%, Space 15.9%, Building 12.1%, Sci-fi 8.2%, Strategy 8.2%
Why You'll Like It: This game introduces a unique survival city-builder mechanic where your city must stay mobile to survive.
- #20 Cliff Empire
82% matchVery Positive87% of 4,371 reviews2019
Dev: Lion's Shade
Windows · Mac
Median: 4.0 hrsMean: 15.2 hrs≥1hr: 79%
After a nuclear war life on the surface became impossible. A 300m thick radioactive fog covered the Earth. We are looking for bold active people to manage the process of restoring life on Earth. Join!
Why similar: City Builder 32.6%, Futuristic 14.1%, Building 12.7%, Sci-fi 9.3%, Resource Management 8.7%
Why You'll Like It: This city-builder requires managing multiple platforms simultaneously, mirroring the multi-location expansion of Planet S.
- #21 Farlanders
82% matchVery Positive90% of 591 reviews2023
Dev: Andrii BychkovskyiPub: Crytivo
Windows · Mac · Linux
Median: 2.1 hrsMean: 7.6 hrs≥1hr: 60%
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: City Builder 27.8%, Space 16.6%, Building 13.4%, Procedural Generation 9.5%, Resource Management 8.7%
Why You'll Like It: A turn-based take on space colonization that emphasizes terraforming and efficient city layout.
- #22 Galaxy Reavers
84% matchMixed69% of 205 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 35.5%, Space 32.1%, Strategy 19%, Sci-fi 10.7%, Indie 2.8%
Why You'll Like It: A space-themed RTS that focuses on fleet management and tactical combat in a sci-fi setting.
- #23 Supreme Commander: Forged Alliance
80% matchOverwhelmingly Positive97% of 14,341 reviews2011
Dev: Gas Powered GamesPub: Square Enix
Windows
Median: 6.9 hrsMean: 49.7 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 53.1%, Strategy 17.4%, Multiplayer 12.9%, Sci-fi 11.8%, Space 3.1%
Why You'll Like It: It provides the massive scale and strategic depth required for large-scale RTS warfare.
- #24 Sol 0: Mars Colonization
81% 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: Space 51.3%, Strategy 34.3%, Indie 7.6%, Simulation 6.8%
Why You'll Like It: This simulation game provides a realistic look at the early stages of establishing a colony on Mars.
- #25 Homeworld: Deserts of Kharak
79% matchMostly Positive79% of 8,913 reviews2016
Dev: Blackbird InteractivePub: Gearbox Publishing
Windows · Mac
Median: 5.0 hrsMean: 9.7 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 43.5%, Strategy 15.2%, Sci-fi 12.6%, Space 11.2%, Multiplayer 10%
Why You'll Like It: This sci-fi RTS offers a grounded, tactical experience with a strong narrative and atmospheric world-building.
- #26 Moons of Ardan
79% 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: City Builder 31.9%, Space 18.2%, Building 15.9%, Resource Management 8.5%, Management 7.8%
Why You'll Like It: This city-builder focuses on building a thriving economy across multiple moons and planets.
- #27 Stable Orbit - Build your own space station
81% matchMixed50% of 381 reviews2017
Dev: Jim Offerman
Windows · Mac · Linux
Median: 48 minMean: 5.0 hrs≥1hr: 47%
Design, build and control your own space station. Mission command and control is in your hands and only careful planning and vigilant supervision will keep your crew and space station safe.
Why similar: City Builder 19.9%, Space 19.1%, Building 15.3%, Management 9.4%, Resource Management 8.7%
Why You'll Like It: It provides a detailed look at the engineering and management required to maintain a space station.
- #28 Space Drilling Station
77% matchVery Positive92% of 84 reviews2026
Dev: Ayota GamesPub: Abiding Bridge
Windows
In Space Drilling Station, manage a drilling station on a distant planet. Build a multi-level vertical structure to produce and manage your resources and staff, in order to dominate the competition!
Why similar: City Builder 19%, Space 13.8%, Building 11.5%, Futuristic 10.9%, Real Time Tactics 10.4%
- #29 Periphery Online
77% matchMixed72% of 54 reviews2026
Dev: Aleksandr Nagaev
Windows
A refugee capsule lands on an uninhabited planet. You have to survive, rebuild civilization and, if possible, regain control over the Earth. One big universe, one endless pvp session for all players.
Why similar: RTS 28%, Space 18.8%, Futuristic 14.1%, City Builder 14%, Sci-fi 9.2%
- #30 PlanetX
78% matchMixed67% of 54 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: City Builder 26.3%, RTS 21.3%, Building 11.4%, Space 9.7%, Futuristic 9.1%
- #31 Relentless Expanse
76% matchVery Positive90% of 110 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: RTS 27.8%, Space 17.9%, Real Time Tactics 13.6%, Multiplayer 11.8%, Sci-fi 9.6%
- #32 Oasis Mission: Colony Sim
75% matchMixed62% of 117 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: City Builder 23.7%, RTS 17.9%, Building 11%, Real Time Tactics 10.2%, Futuristic 7.7%
- #33 Etherium
78% 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 31.9%, Sci-fi 24%, Strategy 18.1%, Space 15.1%, Multiplayer 10.2%
Why You'll Like It: A sci-fi RTS that features dynamic weather and resource competition across various planetary environments.
- #34 Generation Exile
74% matchMixed68% of 56 reviews2026
Dev: Sonderlust Studios
Windows
Rebuild settlements entirely within a colossal generation ship in this turn-based city builder. Expand your city, manage limited resources and optimize production chains as you navigate difficult choices about humanity’s future among the stars.
Why similar: City Builder 31.6%, Building 15%, Space 14.9%, Management 8.7%, Procedural Generation 8.3%
- #35 Alien Horizon (Preview Alpha)
74% matchVery Positive86% of 205 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: City Builder 44.4%, Building 18.7%, Strategy 11.3%, Futuristic 7.6%, Sci-fi 5.6%
- #36 Possible One: Lunar Industries
73% matchMixed68% of 56 reviews2026
Dev: Upstairs Games
Windows
Stake your claim in the first realistic lunar colony management game! Use proven, real-world technologies to plan and grow your colony, mine resources, ship them to Earth, and keep the board of directors happy in this science-based colony sim.
Why similar: City Builder 31.4%, Space 13.6%, Building 13.2%, Futuristic 11.3%, Strategy 8.6%
- #37 Desynced
71% matchMostly Positive79% of 2,026 reviews2026
Dev: Stage Games Inc.Pub: Forklift Interactive
Windows
Median: 4.4 hrsMean: 18.8 hrs≥1hr: 77%
Desynced is a sci-fi strategy game with fully customizable units and behaviors. Gather, build, research, and explore the unknown. Alone or with friends, unveil the mystery of an AI on the edge of self-awareness and uncover the hidden truth in this blend of strategy, automation, and exploration.
Why similar: City Builder 24.3%, RTS 21%, Building 12.1%, Multiplayer 9.1%, Sci-fi 7.6%
- #38 Earth Space Colonies
76% 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 42.6%, Space 29.5%, Strategy 18.6%, Indie 4.7%, Simulation 4.6%
- #39 Per Aspera
73% matchMostly Positive76% of 5,760 reviews2020
Dev: Tlön IndustriesPub: Raw Fury
Windows
Median: 5.0 hrsMean: 12.0 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: City Builder 27.5%, Space 14.7%, Building 14%, Multiplayer 9.7%, Management 8.9%
- #40 Project AURA
75% matchMixed64% of 698 reviews2018
Dev: Nexcentric Games
Windows
Median: 4.6 hrsMean: 8.1 hrs≥1hr: 82%
Project Aura is a micro management game where you lead a Colony of Climate Disaster Survivors. You have been assigned the mission to build an habitat capable of survival in this new unknown world.
Why similar: City Builder 35.5%, Building 12.5%, Strategy 11.3%, Resource Management 9.6%, Management 9.4%
- #41 The Final Earth 2
72% matchVery Positive97% of 424 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: City Builder 19.5%, Space 18.3%, Building 15%, Futuristic 10.9%, Management 9.4%
- #42 Stellar Settlers: Space Base Builder
72% matchMostly Positive70% of 832 reviews2025
Dev: Tinymice EntertainmentPub: Rogue Duck Interactive
Windows · Mac · Linux
Median: 2.4 hrsMean: 3.5 hrs≥1hr: 75%
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: City Builder 35%, Space 16.1%, Building 15.9%, Resource Management 11%, Strategy 8.5%
- #43 Outlive 25
69% matchVery Positive95% of 265 reviews2026
Dev: Continuum EntertainmentPub: CriticalLeap
Windows
Build your base, prepare your troops, and face your most epic battle yet in this old-school real-time strategy game. Choose between two factions, test your skills in three epic campaigns and engage in online battles with up to 16 players simultaneously.
Why similar: RTS 28%, Futuristic 14%, Building 11.3%, Multiplayer 10.3%, Space 9.9%
- #44 Aven Colony
71% matchMostly Positive72% of 2,779 reviews2017
Dev: Mothership Entertainment LLCPub: Team17 Digital Ltd
Windows
Median: 4.2 hrsMean: 8.1 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: City Builder 52.5%, Strategy 12.2%, Space 12%, Sci-fi 11.9%, Resource Management 3.5%
- #45 Nexus - The Jupiter Incident
71% matchVery Positive86% of 1,085 reviews2007
Dev: Mithis GamesPub: THQ Nordic Mobile
Windows
Median: 1.9 hrsMean: 12.0 hrs≥1hr: 65%
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 30.5%, RTS 24.1%, Strategy 14.1%, Sci-fi 12.2%, Real Time Tactics 7.1%
- #46 My Colony
70% matchVery Positive90% of 279 reviews2018
Dev: Ape Apps
Windows · Mac · Linux
Build, expand, and rule a growing space colony. Explore tech, trade, and multiplayer.
Why similar: City Builder 78.4%, Strategy 14%, Indie 4%, Simulation 3.6%
- #47 Ancient Space
73% matchMixed44% of 370 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 36.5%, Space 32.3%, Strategy 17.6%, Sci-fi 9.7%, Singleplayer 1.7%
- #48 Citizens: On Mars - Prologue
69% 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: City Builder 41.1%, Strategy 18.1%, Space 11.8%, Futuristic 11.1%, Sci-fi 7.1%
- #49 Solar Expanse - Space Exploration Manager
66% matchVery Positive88% of 1,295 reviews2026
Dev: SpaceOpsPub: Games Operators
Windows
Median: 4.8 hrsMean: 14.7 hrs≥1hr: 77%
Explore the Solar System. Mine and drop asteroids. Colonize and terraform. Lead the space race and compete with other corporations on your way to profit. Watch the expansion of human race over the centuries.
Why similar: Space 26.9%, Futuristic 11.2%, Building 10.9%, Sci-fi 10.6%, Management 10.4%
- #50 Terraformers: First Steps on Mars
68% matchVery Positive89% of 703 reviews2021
Dev: Asteroid LabPub: Goblinz Publishing
Windows · Mac · Linux
Median: 1.0 hrsMean: 6.1 hrs≥1hr: 49%
Terraformers: First Steps on Mars is a free prologue of Terraformers, featuring an exclusive challenge to lead humanity's first attempt at settling the Red Planet.
Why similar: City Builder 30.8%, Futuristic 14.6%, Resource Management 11.5%, Strategy 11.2%, Sci-fi 11%
- #51 Final Upgrade
68% matchMostly Positive77% of 458 reviews2022
Dev: TaosX
Windows
Median: 4.2 hrsMean: 12.2 hrs≥1hr: 69%
Help humanity to spread throughout the cosmos by exploring new worlds, building space factories and setting up trade routes. Research advanced technologies to increase efficiency and unlock new paths of development. Fight off other artificial intelligences in your goal to reach the Final Upgrade!
Why similar: Space 21%, Building 16.9%, RTS 12.5%, Resource Management 10.1%, Sci-fi 9%
- #52 Planets Under Attack
70% matchMostly Positive73% of 1,250 reviews2012
Dev: Targem GamesPub: Topware Interactive
Windows · Mac
Median: 3.3 hrsMean: 9.9 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 84.1%, Space 7.1%, Multiplayer 3.6%, Sci-fi 2.8%, Indie 2.5%
- #53 Pixel Starships
67% matchMostly Positive73% of 3,000 reviews2023
Dev: SavySoda
Windows · Mac · Linux
Median: 2.2 hrsMean: 24.3 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: Space 31.7%, Building 23.8%, Sci-fi 16.8%, Multiplayer 14.3%, Strategy 13.4%
- #54 Solargene
64% matchMostly Positive76% of 848 reviews2026
Dev: Alexander Semenov
Windows
Median: 4.2 hrsMean: 33.7 hrs≥1hr: 70%
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: City Builder 31%, Space 14.8%, Building 14.5%, Resource Management 9.8%, Management 8.8%
- #55 Planetiles
66% matchVery Positive82% of 97 reviews2024
Dev: MythicOwl
Windows · Mac · Linux
Dive into Planetiles, where strategy and creativity converge. Build and transform barren planets into flourishing worlds. Outwit natural disasters, develop vibrant habitats, and navigate complex challenges. Embrace a boardgame-like depth with thoughtful planning and strategic decision-making.
Why similar: City Builder 32.7%, Space 17.4%, Building 14.1%, Sci-fi 9.5%, Management 8.3%
- #56 Plan B: Terraform
63% matchVery Positive91% of 3,595 reviews2025
Dev: Gaddy Games
Windows
Median: 4.4 hrsMean: 11.2 hrs≥1hr: 81%
Terraform a lifeless rock into a lush and habitable world. Build trucks, trains, and sprawling factories on an enormous hexagonal planet. Grow its population to millions. Enjoy a dynamic simulation of atmosphere, temperature, water, and forests.
Why similar: Building 17.9%, Resource Management 16.8%, Hex Grid 14.1% ★, Procedural Generation 13.8%, Management 12.3%
- #57 Poly Universe
67% matchVery Positive87% of 124 reviews2018
Dev: Pouchmouse
Windows · Mac · Linux
Poly Universe is a survival city-building game in a galaxy where planets are only slightly larger than the colonists who inhabit them.
Why similar: Strategy 67.7%, Indie 17.1%, Simulation 15.2%
- #58 Trappist
66% matchVery Positive90% of 72 reviews2024
Dev: Sirrah
Windows · Mac · Linux
Welcome to Trappist-1, 40.7 light-years from Earth. Fly your Ark, a colossal spaceship and mobile base. Explore the solar system and establish thriving colonies. Uncover the mysteries of Trappist in this story-driven colony builder.
Why similar: City Builder 32.6%, Space 17.7%, Building 16.7%, Resource Management 8.8%, Futuristic 8.5%