- #1 Planetbase
97% 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: City Builder 37.8%, Space 20.5%, Strategy 8.2%, Building 7.9%, Resource Management 6%
Why You'll Like It: A core space colony-builder that captures the essence of managing resources and survival in a hostile extraterrestrial environment.
- #2 IXION
96% matchMostly Positive79% of 17,015 reviews2022
Dev: Bulwark StudiosPub: Kasedo Games
Windows
Median: 10.0 hrsMean: 31.1 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 33.4%, Space 22%, Building 11.2%, Resource Management 9.7%, Strategy 8.1%
Why You'll Like It: Combines city-building with space exploration and survival, requiring careful management of a mobile station across different sectors.
- #3 Dyson Sphere Program
94% matchOverwhelmingly Positive98% of 90,027 reviews2021
Dev: Youthcat StudioPub: Gamirror Games
Windows
Median: 13.2 hrsMean: 75.2 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 23.2%, City Builder 17.7%, Building 15.5%, Resource Management 10%, Sci-fi 7.9%
Why You'll Like It: An expansive automation and logistics game that tasks you with building massive structures across multiple star systems.
- #4 Anno 2205™
95% 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 33.6%, RTS 9.8%, Futuristic 9.8%, Space 9.7%, Strategy 8.9%
Why You'll Like It: A futuristic city-builder that allows for multi-region management, including lunar colonies, which aligns perfectly with the multi-planet scope of Planet S.
- #5 The Universim
94% matchVery Positive80% of 10,483 reviews2024
Dev: Crytivo
Windows · Mac · Linux
Median: 7.3 hrsMean: 33.9 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 33.4%, Building 15.5%, Space 13.5%, Procedural Generation 8.6%, Management 7.9%
Why You'll Like It: A god-game city-builder that allows you to guide a civilization from the stone age to space-faring expansion across multiple planets.
- #6 Cliff Empire
93% matchVery Positive87% of 4,340 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%, Futuristic 13.9%, Building 12.6%, Sci-fi 9.2%, Resource Management 9.2%
Why You'll Like It: Features a unique multi-city management system that requires balancing resources across different locations, much like the multi-planet gameplay of Planet S.
- #7 Per Aspera
92% 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: City Builder 27.1%, Space 14.3%, Building 13.8%, Multiplayer 9.7%, Resource Management 9.3%
Why You'll Like It: A planetary simulation game where you terraform Mars, focusing on the grand scale of building and resource distribution.
- #8 Space Haven
91% matchVery Positive86% of 9,719 reviews2020
Dev: Bugbyte Ltd.
Windows · Mac · Linux
Median: 4.3 hrsMean: 20.2 hrs≥1hr: 72%
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 26.1%, Space 16.5%, Building 14.5%, Management 9.4%, Resource Management 9%
Why You'll Like It: A detailed colony-sim that emphasizes ship-building and resource management in the vacuum of space.
- #9 Planetary Annihilation: TITANS
91% 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 29.5%, Real Time Tactics 12.8%, Space 12.3%, Building 11.5%, Multiplayer 9%
Why You'll Like It: A massive-scale RTS that features combat and expansion across entire solar systems, emphasizing the strategic use of multiple planets.
- #10 Reshaping Mars
89% 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: RTS 23.3%, Building 13.2%, Space 13%, City Builder 10.2%, Futuristic 9.4%
Why You'll Like It: A colony-building game specifically focused on the challenges of developing a sustainable base on the Martian surface.
- #11 Offworld Trading Company
90% 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: City Builder 25.3%, Space 13.2%, Multiplayer 9.8%, Sci-fi 9.5%, Resource Management 9.3%
Why You'll Like It: An economic RTS set on Mars that focuses on market manipulation and resource acquisition rather than traditional combat.
- #12 Anno 2070™
89% 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 39.3%, RTS 14.4%, Strategy 11.5%, Futuristic 9.6%, Multiplayer 5.9%
Why You'll Like It: Features a futuristic setting with complex supply chains and environmental management that mirrors the strategic depth of Planet S.
- #13 Before We Leave
87% matchMostly Positive78% of 1,697 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 28.7%, Space 14.9%, Building 13%, Hex Grid 9.3% ★, Resource Management 9.1%
Why You'll Like It: A non-violent, hex-based city-builder that encourages expanding your civilization across multiple planets in a relaxing atmosphere.
- #14 Starport Delta
88% 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%, RTS 15.2%, Strategy 14.5%, Space 12.5%, Building 8.8%
Why You'll Like It: A space station builder that focuses on managing resources and expanding your station to accommodate a growing population.
- #15 Farlanders
86% 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: City Builder 27.4%, Space 16.3%, Building 13.3%, Procedural Generation 9.6%, Resource Management 9.2%
Why You'll Like It: A turn-based colony-builder focused on terraforming and managing resources on a harsh alien world.
- #16 Exogate Initiative
85% 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: City Builder 21.2%, RTS 16.5%, Building 11.2%, Space 10.6%, Resource Management 7.6%
Why You'll Like It: A base-building management game that focuses on the logistics of operating a stargate program.
- #17 Earth Space Colonies
86% 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 42.2%, Space 29.2%, Strategy 19%, Indie 4.8%, Simulation 4.7%
Why You'll Like It: A simulation game that tasks players with establishing and managing colonies on various planets within the solar system.
- #18 Factorio
82% matchOverwhelmingly Positive97% of 227,071 reviews2020
Dev: Wube Software LTD.
Windows · Mac · Linux
Median: 44.8 hrsMean: 188.9 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 22.2%, City Builder 20.1%, Building 14.6%, Multiplayer 13.9%, Management 10.4%
Why You'll Like It: The gold standard for logistics and automation, providing a deep building experience that rewards efficient infrastructure design.
- #19 Moons of Ardan
84% 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 31.5%, Space 17.9%, Building 15.8%, Resource Management 9%, Management 8.1%
Why You'll Like It: A space city-builder that focuses on building production chains and managing logistics between different moons and planets.
- #20 RimWorld
82% matchOverwhelmingly Positive98% of 236,346 reviews2018
Dev: Ludeon Studios
Windows · Mac · Linux
Median: 59.1 hrsMean: 259.4 hrs≥1hr: 92%
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
Why similar: City Builder 26.6%, Building 14.2%, Management 11.9%, Procedural Generation 11.3%, Sci-fi 11.2%
Why You'll Like It: A deep colony-sim that emphasizes individual character management and base-building in a sci-fi setting.
- #21 Project AURA
84% 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 34.9%, Building 12.4%, Strategy 11.4%, Resource Management 10.1%, Management 9.8%
Why You'll Like It: A management and building game set in a futuristic environment that requires balancing resources and technology.
- #22 Timberborn
79% matchOverwhelmingly Positive96% of 38,007 reviews2026
Dev: Mechanistry
Windows · Mac
Median: 9.8 hrsMean: 40.3 hrs≥1hr: 84%
Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A sandbox city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood.
Why similar: City Builder 50.9%, Building 19.9%, Management 12.4%, Strategy 9.1%, 3D 5.7%
Why You'll Like It: While not in space, its focus on vertical building and complex water/resource management provides a similar satisfaction to Planet S.
- #23 Oasis Mission: Colony Sim
81% 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: City Builder 23.4%, RTS 17.6%, Building 10.9%, Real Time Tactics 10.2%, Resource Management 7.7%
Why You'll Like It: A colony-sim that emphasizes resource management and automation to survive on a desert planet.
- #24 Against the Storm
79% matchVery Positive95% of 35,504 reviews2023
Dev: Eremite GamesPub: Hooded Horse
Windows
Median: 5.5 hrsMean: 28.3 hrs≥1hr: 84%
A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors.
Why similar: City Builder 36.7%, Building 19%, Resource Management 12.6%, Management 12%, Strategy 10.2%
Why You'll Like It: A fast-paced, roguelite city-builder that rewards efficient planning and rapid expansion in a challenging environment.
- #25 Stable Orbit - Build your own space station
83% matchMixed51% of 380 reviews2017
Dev: Jim Offerman
Windows · Mac · Linux
Median: 48 minMean: 5.0 hrs≥1hr: 46%
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 19.6%, Space 18.7%, Building 15.1%, Management 9.7%, Resource Management 9.1%
Why You'll Like It: Focuses on the technical aspects of building and maintaining a functional space station in orbit.
- #26 Workers & Resources: Soviet Republic
78% matchVery Positive91% of 25,183 reviews2024
Dev: 3DivisionPub: Hooded Horse
Windows
Median: 6.6 hrsMean: 73.0 hrs≥1hr: 77%
Build a soviet republic from an impoverished country into a rich industrial superpower in a city builder with intricate production chains and a fully simulated global economy. Manage the lives of your citizens from education to work and party loyalty to criminal activity.
Why similar: City Builder 40.3%, Building 18.9%, Management 11.9%, Strategy 11.1%, Resource Management 9.7%
Why You'll Like It: Offers an incredibly deep logistics and city-building experience that will appeal to players who enjoy the complex supply chains of Planet S.
- #27 The Final Earth 2
80% 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: City Builder 19.1%, Space 18.1%, Building 14.8%, Futuristic 10.7%, Management 9.7%
Why You'll Like It: A colony-builder that focuses on building vertical cities on small, space-faring platforms.
- #28 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 50.5%, Strategy 34.8%, Indie 7.7%, Simulation 6.9%
Why You'll Like It: A focused simulation game about establishing the first permanent base on Mars.
- #29 Relentless Expanse
77% 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: RTS 27.5%, Space 17.8%, Real Time Tactics 13.6%, Multiplayer 11.8%, Strategy 9.7%
- #30 PlanetX
78% 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: City Builder 26.1%, RTS 21.2%, Building 11.4%, Space 9.7%, Futuristic 9%
- #31 Alien Horizon (Preview Alpha)
76% 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: City Builder 44%, Building 18.6%, Strategy 11.5%, Futuristic 7.6%, Sci-fi 5.6%
- #32 Desynced
74% matchVery Positive81% of 1,825 reviews2026
Dev: Stage Games Inc.Pub: Forklift Interactive
Windows
Median: 4.2 hrsMean: 19.3 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 23.9%, RTS 20.7%, Building 11.9%, Multiplayer 9.1%, Sci-fi 7.5%
- #33 Stellar Settlers: Space Base Builder
74% 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: City Builder 34.5%, Building 15.8%, Space 15.6%, Resource Management 11.7%, Strategy 8.7%
- #34 Galaxy Reavers
77% 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 35.2%, Space 31.8%, Strategy 19.4%, Sci-fi 10.7%, Indie 2.8%
- #35 Nexus - The Jupiter Incident
75% 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 30.2%, RTS 23.9%, Strategy 14.4%, Sci-fi 12.2%, Real Time Tactics 7.1%
- #36 Etherium
76% 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 31.7%, Sci-fi 24%, Strategy 18.5%, Space 14.9%, Multiplayer 10.3%
- #37 Aven Colony
73% 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: City Builder 52.2%, Strategy 12.5%, Space 12%, Sci-fi 11.9%, Resource Management 3.5%
- #38 Ancient Space
75% 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 36.2%, Space 32%, Strategy 18%, Sci-fi 9.7%, Singleplayer 1.7%
- #39 Citizens: On Mars - Prologue
72% 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 40.7%, Strategy 18.5%, Space 11.6%, Futuristic 11%, Sci-fi 7.1%
- #40 Pixel Starships
70% 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: Space 31.5%, Building 23.7%, Sci-fi 16.8%, Multiplayer 14.4%, Strategy 13.7%
- #41 Terraformers: First Steps on Mars
70% matchVery Positive89% of 696 reviews2021
Dev: Asteroid LabPub: Goblinz Publishing
Windows · Mac · Linux
Median: 1.0 hrsMean: 6.2 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 30.1%, Futuristic 14.4%, Resource Management 12.1%, Strategy 11.3%, Sci-fi 10.9%
- #42 My Colony
71% 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: City Builder 77.8%, Strategy 14.4%, Indie 4.1%, Simulation 3.6%
- #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 84.4%, Space 6.9%, Multiplayer 3.5%, Sci-fi 2.7%, Indie 2.5%
- #44 Space Company Simulator
73% 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: Space 19.4%, Building 17.4%, Strategy 12.3%, Futuristic 11.9%, Management 9.3%
- #45 Startopia
71% matchVery Positive90% of 962 reviews2013
Dev: My Little Planet Ltd
Windows
Median: 30 minMean: 9.0 hrs≥1hr: 39%
A once thriving network of space stations and planets have been left lifeless, redundant scars of the apocalypse. Into this age of darkness comes light. You will lead the way in rebuilding the network of space stations to a standard accepted by the individual alien races, attracting them to harness their expertise and research new...
Why similar: City Builder 25.1%, RTS 19.8%, Space 15.3%, Management 10.2%, Sci-fi 8.2%
- #46 Planetiles
68% matchVery Positive84% of 93 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 32.4%, Space 17.2%, Building 14%, Sci-fi 9.5%, Management 8.7%
- #47 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 29.3%, Space 17.8%, Building 14%, Sci-fi 9.5%, Futuristic 9.1%
- #48 Poly Universe
70% 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 67.6%, Indie 17.1%, Simulation 15.2%
- #49 Trappist
67% 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 32.3%, Space 17.5%, Building 16.6%, Resource Management 9.3%, Futuristic 8.5%
- #50 MegaFactory Titan
69% matchMostly Positive78% of 140 reviews2022
Dev: Q Switched Productions, LLC
Windows · Mac · Linux
A factory-building game. Survive a harsh climate, strip mine an infinite world, and build a sprawling factory, then trade or go to war with Colonists, Governments, Pirates, Rebels, and more!
Why similar: City Builder 23.1%, Building 15.1%, Space 13%, Procedural Generation 10.6%, Resource Management 9.5%
- #51 Solargene
66% 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: City Builder 30.6%, Space 14.5%, Building 14.4%, Resource Management 10.4%, Management 9.2%
- #52 Industries of Titan
68% 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: City Builder 31.3%, Space 14.9%, Building 13.9%, Resource Management 11%, Futuristic 9.7%
- #53 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: Real Time Tactics 19.7%, RTS 19.6%, Space 18.1%, Procedural Generation 12.6%, Sci-fi 8%
- #54 Sphere - Flying Cities
69% matchMixed50% of 237 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 29.7%, Space 16.9%, Building 12.9%, Strategy 9%, Resource Management 8.9%
- #55 Plan B: Terraform
63% matchVery Positive91% of 3,463 reviews2025
Dev: Gaddy Games
Windows
Median: 4.3 hrsMean: 10.9 hrs≥1hr: 80%
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 17.6%, Resource Management 17.6%, Hex Grid 13.6% ★, Procedural Generation 13.5%, Management 12.8%
- #56 Terraformers
65% matchVery Positive88% of 3,606 reviews2023
Dev: Asteroid LabPub: Goblinz Publishing
Windows · Mac · Linux
Median: 3.4 hrsMean: 9.6 hrs≥1hr: 87%
Terraform Mars in this turn-based colony builder and resource management game with roguelike elements. Explore the planet, develop spectacular cities, spread life and turn the Red Planet into a green one!
Why similar: Space 21.1%, Procedural Generation 16.4%, Futuristic 15.5%, Resource Management 11.8%, Sci-fi 11.2%
- #57 Rogue Station
66% matchMostly Positive78% of 228 reviews2023
Dev: Quint Studio
Windows
This "space station builder simulation roguelite" puts you in charge of a space station. Fight off enemy ships, fleets and rival stations to dominate your corner of space. Build and upgrade your station, hire and manage your crew. Survive as long as you can.
Why similar: City Builder 28.2%, Space 19.1%, Building 16.1%, Real Time Tactics 13.3%, Management 9.2%
- #58 Foundation
62% matchVery Positive86% of 23,481 reviews2025
Dev: Polymorph Games
Windows
Median: 11.0 hrsMean: 26.3 hrs≥1hr: 89%
Foundation is a grid-less, laidback medieval city-building game with a focus on organic development, monument construction and resource management.
Why similar: City Builder 47.4%, Building 10.5%, RTS 10.1%, Strategy 7.9%, Resource Management 7.4%