- #1 They Are Billions
97% matchVery Positive85% of 50,888 reviews2019
Dev: Numantian Games
Windows
Median: 14.2 hrsMean: 56.2 hrs≥1hr: 91%
They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?
Why similar: Colony Sim 28.1%, Base Building 23.4%, RTS 19%, Tower Defense 14.7%, Strategy 5.8%
- #2 From Glory To Goo
96% matchOverwhelmingly Positive97% of 1,633 reviews2024
Dev: Stratagem Blue
Windows
Median: 4.0 hrsMean: 17.9 hrs≥1hr: 69%
From Glory To Goo is a Sci-Fi survival RTS set on an alien world. Serve as humanity's bulwark by establishing a colony and supporting your colonists still in orbit. But beware, for The Goo, a relentless and shape-shifting force approaches from all sides, even above and below.
Why similar: Action RTS 22.1% ★, Colony Sim 18.4%, RTS 16.6%, Tower Defense 15.4%, Base Building 13.7%
- #3 Alien Marauder
96% matchMixed63% of 341 reviews2021
Dev: Vexan Studio
Windows
“Alien Marauder” is a real-time strategy game with survival and confrontation theme. In this game, you will be the leader to a treacherous alien planet, build and defend base to survive against the vexan waves. Make the right decision!
Why similar: Colony Sim 19.8%, RTS 16.1%, Base Building 12.2%, Tower Defense 12.1%, Real Time Tactics 10.6%
- #4 The Crust
95% matchMostly Positive77% of 3,542 reviews2024
Dev: VEOM StudioPub: Crytivo
Windows
Median: 7.0 hrsMean: 23.2 hrs≥1hr: 82%
Automate a lunar base as you become the savior of humanity exploring the future on the moon. Mine, craft, research, and trade resources with Earth in this gripping narrative basebuilder.
Why similar: Colony Sim 25.4%, Base Building 17.4%, Space 12.9%, Resource Management 12.9%, RTS 11.1%
- #5 Planetbase
94% matchMostly Positive80% of 10,320 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 35.7%, Base Building 20.2%, Space 14.9%, Resource Management 7.9%, Management 6.3%
- #6 MarZ: Tactical Base Defense
94% matchMostly Positive78% of 890 reviews2019
Dev: Giant Grey
Windows
Median: 2.6 hrsMean: 5.5 hrs≥1hr: 71%
Build your defense base to fight back the undead hordes of Mars and secure the future of the red planet. MarZ is a game of strategy and tactical defense where you must carefully manage your crew and resources as you try to uncover the terrible secrets of the undead.
Why similar: Tower Defense 21.8%, Mars 18.8% ★, RTS 18.7%, Base Building 11.3%, Management 8%
- #7 Executive Assault 2
92% matchVery Positive83% of 1,738 reviews2023
Dev: Hesketh Studios Ltd
Windows · Mac
Median: 3.8 hrsMean: 8.4 hrs≥1hr: 76%
The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.
Why similar: RTS 27.1%, Action RTS 18.9% ★, Base Building 17.5%, Space 12.3%, Real Time Tactics 10.7%
- #8 Space Drilling Station
91% matchVery Positive92% of 77 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: Colony Sim 20.5%, Base Building 12.7%, Real Time Tactics 11.3%, Economy 11.1%, Resource Management 9.6%
- #9 Maia
93% matchMixed44% of 1,064 reviews2018
Dev: Simon RothPub: Machine Studios
Windows · Mac · Linux
Median: 30 minMean: 4.4 hrs≥1hr: 41%
Maia is a colony building game set in the not-so-distant future. Your colonists make planetfall on a hostile world and you must ensure their survival and their safety, constructing their off-world habitat from almost nothing and sheltering them from a dangerous, often deadly environment.
Why similar: Colony Sim 38.1%, Base Building 12.8%, Management 12.4%, Sci-fi 11.1%, Space 9.8%
- #10 Taur
91% matchMostly Positive80% of 2,092 reviews2020
Dev: Echo Entertainment
Windows
Median: 4.2 hrsMean: 6.8 hrs≥1hr: 76%
Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?
Why similar: Tower Defense 32.3%, Base Building 17.1%, RTS 14.7%, Real Time Tactics 10.7%, Strategy 8.7%
- #11 IXION
90% matchMostly Positive79% of 17,230 reviews2022
Dev: Bulwark StudiosPub: Kasedo Games
Windows
Median: 10.1 hrsMean: 30.9 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: Colony Sim 25.3%, Space 18.1%, Resource Management 14.5%, Base Building 14.3%, Economy 9.5%
- #12 Drill Core
89% matchVery Positive85% of 2,374 reviews2025
Dev: Hungry Couch GamesPub: tinyBuild
Windows
Median: 6.4 hrsMean: 14.8 hrs≥1hr: 87%
Corporate greed meets strategic planet-mining in Drill Core! Drill to the heart of planets while managing workers, researching cutting-edge tech, and fortifying against alien attacks. Will you prioritize efficiency and risk your workers' safety, or focus on defense for survival?
Why similar: Colony Sim 29.2%, Tower Defense 21.5%, Base Building 15.1%, Management 8.8%, Strategy 7.2%
- #13 Outworld Station
88% matchVery Positive86% of 714 reviews2026
Dev: Trickjump Games Ltd
Windows
Median: 3.9 hrsMean: 10.3 hrs≥1hr: 70%
Take the helm as a new Station Commander and exploit an alien star system in this stunning space-station factory automation game. Amass resources and construct starships using increasingly advanced manufacturing and expand your station in a hostile universe.
Why similar: Base Building 18.4%, RTS 16.9%, Space 14.4%, Management 11.2%, Resource Management 9.6%
- #14 Here Comes The Swarm
87% matchVery Positive88% of 258 reviews2026
Dev: CableHook Games
Windows
Here Comes the Swarm is a survival RTS with a pause button! Create your strategy, build, manage, and defend your settlements at your own pace. Take the fight to the hive mind and lead expeditions to deliver a deadly blow and eradicate your foes. Will you reclaim Ulora from the relentless Swarm?
Why similar: Action RTS 17.6% ★, Colony Sim 16.4%, RTS 13%, Tower Defense 10.8%, Base Building 10.7%
- #15 Colony Survival
86% matchVery Positive92% of 8,872 reviews2017
Dev: Pipliz
Windows · Mac · Linux
Median: 9.6 hrsMean: 28.2 hrs≥1hr: 87%
Colony Survival is a unique first-person strategy game developed by a two-man team. Build your own colony in a voxel world. Command guards, farmers, miners and other colonists. Defend your colony against the horde of monsters that attacks every night!
Why similar: Colony Sim 50.7%, Base Building 27.2%, Management 8.7%, RTS 6.8%, Strategy 6.7%
- #16 Dyson Sphere Program
85% matchOverwhelmingly Positive98% of 90,697 reviews2021
Dev: Youthcat StudioPub: Gamirror Games
Windows
Median: 13.1 hrsMean: 75.1 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: Base Building 26.5%, Space 20.8%, Resource Management 16.3%, Management 12.5%, Sci-fi 9.6%
- #17 Industries of Titan
86% matchMixed63% of 1,609 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 32.1%, Base Building 18.7%, Resource Management 18.3%, Space 13.5%, Sci-fi 10%
- #18 Stranded: Alien Dawn
83% matchVery Positive84% of 11,043 reviews2023
Dev: Haemimont GamesPub: Paradox Interactive
Windows
Median: 7.0 hrsMean: 24.2 hrs≥1hr: 87%
Brave a new world in Stranded: Alien Dawn, a planet survival sim placing the fate of a small marooned group in your hands. Forge your story through compelling and immersive strategic gameplay as you make vital decisions to protect your survivors.
Why similar: Base Building 29.8%, Colony Sim 28.1%, Management 11.3%, Resource Management 10.2%, Strategy 8.1%
- #19 BlackChain
84% matchVery Positive86% of 120 reviews2021
Dev: Borington
Windows
A classic single-player RTS set in a Solar System ruled by megacorporations. Journey from Mars all the way to Planet 9 and uncover the secrets of the BlackChain.
Why similar: Mars 22.9% ★, Action RTS 17.6% ★, RTS 15.6%, Base Building 11.9%, Space 8.1%
- #20 Byte Lynx
84% matchVery Positive98% of 88 reviews2022
Dev: Artful Games
Windows
Byte Lynx is a fast-paced RTS with no units. Build defenses, dismantle your enemy, and steal their buildings in this deeply tactical building combat-based strategy game. Expand your arsenal across a series of diverse levels!
Why similar: Action RTS 21.6% ★, RTS 16%, Base Building 13.2%, Tower Defense 13.1%, Real Time Tactics 10.3%
- #21 Desynced
81% matchMostly Positive80% of 1,936 reviews2026
Dev: Stage Games Inc.Pub: Forklift Interactive
Windows
Median: 4.5 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: RTS 24.5%, Base Building 20.8%, Resource Management 14.1%, Management 13.7%, Sci-fi 10.8%
- #22 Protolife
82% matchVery Positive86% of 469 reviews2018
Dev: Volcanic Giraffe
Windows · Mac
Median: 3.8 hrsMean: 7.7 hrs≥1hr: 74%
Protolife is an unique tower-based strategy game which gives you a direct control over the builder robot in a struggle against the hungry proto-life organism.
Why similar: RTS 27.6%, Tower Defense 26.8%, Base Building 21.3%, Sci-fi 10.3%, Strategy 7.4%
- #23 Per Aspera
82% matchMostly Positive76% of 5,702 reviews2020
Dev: Tlön IndustriesPub: Raw Fury
Windows
Median: 5.0 hrsMean: 11.9 hrs≥1hr: 93%
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
Why similar: Mars 27% ★, Colony Sim 20.1%, Base Building 13.1%, Resource Management 10.3%, Management 10.1%
- #24 Outlive 25
79% matchVery Positive96% of 206 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 20.1%, Colony Sim 17.3%, Isometric 14.4%, Base Building 11.4%, Resource Management 9.5%
- #25 Rogue Station
81% 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: Base Building 21.6%, Real Time Tactics 19.4%, Space 16.5%, Management 14.2%, PvE 9.2%
- #26 Tower Dominion
78% matchVery Positive86% of 5,010 reviews2025
Dev: Parallel 45 Games
Windows
Median: 11.7 hrsMean: 21.8 hrs≥1hr: 89%
Build and design the terrain while defending your stronghold against alien invasion in this unique Roguelike tower defense. Choose from 30 heroes, survive enemy waves, and upgrade a variety of destructive towers to hold the line!
Why similar: Tower Defense 24.9%, RTS 20.6%, Base Building 17.8%, Resource Management 11.9%, Isometric 10.4%
- #27 Stationeers
80% matchVery Positive88% of 9,014 reviews2017
Dev: RocketWerkz
Windows
Median: 10.2 hrsMean: 83.9 hrs≥1hr: 85%
Stationeers puts you in control of the construction and management of a space station to run by yourself or online with your friends. Complex atmospheric, electrical, manufacturing, agriculture, and gravitational systems require your thought and management at all times!
Why similar: Colony Sim 29.2%, Base Building 19.2%, Resource Management 14.7%, Space 13.9%, Management 13.2%
- #28 Annihilate The Spance
77% matchVery Positive91% of 345 reviews2025
Dev: Skyglow Softworks
Windows
An RTS base builder with huge battles, constant production, and autonomous ships. The Spance approaches, a vast and mysterious storm at the edge of humanity. Who shall claim its riches? Brave the perils of the depths in a story-rich singleplayer campaign with numerous distinct factions and bosses.
Why similar: RTS 26.8%, Base Building 23.1%, Space 17.3%, Resource Management 12.2%, Sci-fi 8.6%
- #29 Cataclismo
76% matchVery Positive89% of 4,143 reviews2025
Dev: Digital SunPub: Hooded Horse
Windows
Median: 4.1 hrsMean: 8.7 hrs≥1hr: 77%
Design and build fortresses brick by brick to stand against endless hordes of Horrors in this real-time strategy game with resource management, siege defense, and exploration. Lead from the ramparts, push back the darkness, and hold fast against the creatures of the Mist.
Why similar: Colony Sim 20.7%, RTS 16.2%, Tower Defense 15%, Base Building 13.3%, Isometric 11.3%
- #30 Space Architect
78% matchMostly Positive76% of 288 reviews2024
Dev: Albert WiatrPub: PlayWay S.A.
Windows
Design your dream space station in Space Architect! Master the power of automation or 'hire' an army of crewmates to handle your ever-growing production. Mine asteroids, fabricate goods, and engage in interstellar trade to pay off the menacing Big Evil Corp. Will you thrive in the vastness of space?
Why similar: Colony Sim 24.5%, Base Building 15.3%, Management 11.3%, Economy 11.2%, Resource Management 9.9%
- #31 Grey Goo
79% matchMixed68% of 4,320 reviews2015
Dev: PetroglyphPub: Six Foot
Windows
Median: 5.2 hrsMean: 8.8 hrs≥1hr: 90%
Fight for control of a frontier world. Gather resources, build your base, and command your forces in battle. Survive long enough to unleash your ultimate weapon - THE EPIC.
Why similar: RTS 48.9%, Base Building 17.1%, Sci-fi 15.8%, Strategy 14.2%, Space 3.9%
- #32 New Cycle
76% matchMostly Positive79% of 2,809 reviews2024
Dev: Core EngagePub: Daedalic Entertainment
Windows
Median: 4.7 hrsMean: 7.9 hrs≥1hr: 86%
New Cycle is a city building game with focus on survival. After an apocalyptic series of solar flares, human society has been thrown into disarray. Establish a settlement and develop it all the way from humble beginnings to industrial metropolis.
Why similar: Colony Sim 29.1%, Base Building 17.6%, Resource Management 13.5%, Management 11.5%, Sci-fi 8.9%
- #33 ERA ONE
74% matchVery Positive87% of 1,422 reviews2025
Dev: Team Complex LTD
Windows
Median: 3.7 hrsMean: 15.9 hrs≥1hr: 67%
Era One is an innovative space game that combines elements of real-time strategy, base building, space survival, and tactical battles. Players can create and customize their bases from scratch, construct various types of structures and warships, manage fleets, and engage in tactical space battles.
Why similar: Action RTS 28.4% ★, RTS 18.4%, Real Time Tactics 17.7%, Base Building 13.2%, Space 11.5%
- #34 Ascent of Ashes
75% matchMostly Positive70% of 298 reviews2025
Dev: Vivid Storm Interactive
Windows
A colony sim set in a post-apocalyptic dystopia. Build and defend your base. Manage your survivors. Engage raiders, aliens, Remnant soldiers and other factions in real-time-with-pause combat. Or use stealth to outwit them. Explore the massive world. Survive at all costs
Why similar: Colony Sim 26.8%, Real Time Tactics 17.9%, Base Building 16.7%, Isometric 12.8%, Management 11.9%
- #35 Space Haven
73% matchVery Positive86% of 10,442 reviews2026
Dev: Bugbyte Ltd.
Windows · Mac · Linux
Median: 4.2 hrsMean: 19.9 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: Colony Sim 28.8%, Base Building 18.1%, Space 13.1%, Management 12.9%, Resource Management 12.4%
- #36 Oxygen Not Included
74% matchOverwhelmingly Positive97% of 140,434 reviews2019
Dev: Klei Entertainment
Windows · Mac · Linux
Median: 8.9 hrsMean: 68.0 hrs≥1hr: 86%
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
Why similar: Colony Sim 39.9%, Base Building 24%, Resource Management 14.8%, Management 8.5%, Space 6.2%
- #37 Reshaping Mars
75% 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: Mars 22.7% ★, Colony Sim 16.8%, RTS 16%, Base Building 12.8%, Space 7.9%
- #38 Astro Colony
73% matchVery Positive82% of 2,526 reviews2022
Dev: Terad Games
Windows
Median: 4.5 hrsMean: 16.3 hrs≥1hr: 78%
Explore endless Universe and create the most efficient constellation of colonies. Build conveyor systems to automate production. Take care of Astronauts and their needs! Establish new colonies as part of intergalactic simulation.
Why similar: Colony Sim 32.2%, Base Building 26.5%, Resource Management 17.5%, Space 17.5%, Strategy 6.4%
- #39 PERIMETER: Legate Edition
73% matchVery Positive92% of 144 reviews2024
Dev: K-D LabPub: Association K-D Lab
Windows · Linux
Perimeter is a real-time strategy game with a destructible world. Utilize the environment for resource gathering and defense against enemies. Immerse yourself in the millennia-spanning history of the Chains of Worlds and lead a faction in the struggle for survival.
Why similar: Action RTS 29.5% ★, RTS 21.2%, Space 10.2%, Top-Down 7.9%, Sci-fi 7%
- #40 Starship Theory
77% matchMixed50% of 1,101 reviews2017
Dev: Reconnect Software
Windows · Mac · Linux
Median: 7.3 hrsMean: 15.3 hrs≥1hr: 78%
Starship Theory is a ship building survival game. Mine and trade to gather resources. Plan and construct new upgrades. Train and manage crew. Fight to survive.
Why similar: Base Building 36.4%, Space 23.9%, Management 16.7%, Sci-fi 11.9%, Strategy 11.1%
- #41 Tower Factory
71% matchVery Positive89% of 1,199 reviews2024
Dev: Gius Caminiti
Windows
Median: 2.6 hrsMean: 6.5 hrs≥1hr: 74%
Tower Factory is a tower defense and automation game with roguelite elements. Optimize resource production using conveyor systems while defending against monster waves. Can you find and destroy the enemy tower before it's too late?
Why similar: Action RTS 18.4% ★, Tower Defense 17.5%, RTS 16.8%, Base Building 13.8%, Resource Management 10.4%
- #42 IDUN - Frontline Survival
72% matchMostly Positive79% of 690 reviews2025
Dev: IDUN InteractivePub: Surefire.Games
Windows · Mac · Linux
Median: 5.1 hrsMean: 10.9 hrs≥1hr: 76%
A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!
Why similar: RTS 21.3%, Tower Defense 20.5%, Base Building 16.7%, Space 12%, Sci-fi 9.1%
- #43 Infection Free Zone
70% matchVery Positive81% of 17,669 reviews2024
Dev: Jutsu GamesPub: Games Operators
Windows
Median: 7.0 hrsMean: 17.7 hrs≥1hr: 86%
Choose any real region from the world. Choose your base of operations, then rebuild and readapt the buildings around you to create a self-sustaining settlement. Take charge of a group of survivors from your city. And when the night falls - Defend the zone from the infected!
Why similar: Outbreak Sim 28.7% ★, Base Building 20.4%, Colony Sim 17.8%, RTS 15.1%, Management 10.1%
- #44 Outpost: Infinity Siege
70% matchMixed65% of 13,570 reviews2024
Dev: Team RangerPub: Lightning Games
Windows
Median: 16.5 hrsMean: 41.6 hrs≥1hr: 91%
Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.
Why similar: Tower Defense 22.8%, RTS 20.5%, Base Building 19.6%, Resource Management 15.3%, Sci-fi 10%
- #45 HYPERNOVA: Escape from Hadea
72% matchVery Positive80% of 82 reviews2017
Dev: ActaLogic
Windows · Mac · Linux
A colorful but challenging blend of classic RTS and tower defense. Build, expand, research, and defend your alien colony as you race to construct a teleportation device and escape a dying star.
Why similar: Colony Sim 24.8%, Tower Defense 17.9%, RTS 17.6%, Base Building 12.2%, Management 7.6%
- #46 Infested Planet
70% matchVery Positive94% of 3,025 reviews2014
Dev: Rocket Bear Games
Windows
Median: 3.1 hrsMean: 5.9 hrs≥1hr: 88%
Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.
Why similar: Tower Defense 32.5%, RTS 31.2%, Strategy 14.8%, Top-Down 11.9%, Sci-fi 9.7%
- #47 Final Factory
69% matchMostly Positive79% of 303 reviews2024
Dev: Never Games Limited
Windows · Mac
Median: 2.0 hrsMean: 7.9 hrs≥1hr: 63%
Final Factory blends factory building, spaceship design, and a rich universe to explore. Build a mega factory and command a massive fleet against the hostile local aliens. Discover new technologies and unlock the secrets of an ancient civilization as you explore an infinite cosmos.
Why similar: Base Building 23.9%, Resource Management 18.7%, RTS 14.8%, Space 14.6%, Sci-fi 11%
- #48 Offworld Trading Company
71% matchMostly Positive77% of 5,684 reviews2016
Dev: Mohawk GamesPub: Stardock Entertainment
Windows · Mac
Median: 3.6 hrsMean: 34.9 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 22.6%, Economy 15%, Resource Management 11.9%, Base Building 11.7%, Management 10.2%
- #49 Repterra
67% matchVery Positive94% of 69 reviews2026
Dev: Chute AppsPub: MicroProse Software
Windows · Mac
Repterra is a base-building survival RTS set in a world overrun by dinosaurs. Manage your colony while battling massive dino hordes. Breed and ride your own dinos, unlock permanent upgrades, and fight to reclaim the world for humanity.
Why similar: Outbreak Sim 22.2% ★, Colony Sim 14.8%, RTS 13.3%, Tower Defense 12%, Base Building 10.8%
- #50 rymdkapsel
71% matchVery Positive83% of 277 reviews2014
Dev: grapefrukt games
Windows · Mac · Linux
Median: 2.1 hrsMean: 4.4 hrs≥1hr: 76%
Build a space station. Command the tiny crew. Explore the galaxy. A meditative space strategy game.
Why similar: RTS 19.7%, Real Time Tactics 19.2%, Tower Defense 18.6%, Base Building 13.9%, Space 9.4%
- #51 Oasis Mission: Colony Sim
69% matchMixed62% of 116 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 20.9%, RTS 14.4%, Real Time Tactics 12.5%, Base Building 12%, Economy 11.2%
- #52 Rogue Command
66% matchVery Positive91% of 771 reviews2026
Dev: feneq
Windows
Median: 2.8 hrsMean: 12.1 hrs≥1hr: 64%
True RTS gameplay reinforced with roguelite build crafting. Control units with bullet-time precision. Call down bases and raise armies. Drafted from a different arsenal every run. Weave builds that break the game. Or the game breaks you.
Why similar: Action RTS 27.9% ★, RTS 20%, Base Building 14.8%, Resource Management 12.1%, Space 11.2%
- #53 SENTRY
67% matchVery Positive82% of 882 reviews2024
Dev: Fireblade Software
Windows
Median: 2.8 hrsMean: 5.3 hrs≥1hr: 73%
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
Why similar: Tower Defense 43.3%, Space 19.4%, Sci-fi 18.2%, Strategy 12.5%, 3D 6.7%
- #54 Cosmoteer: Starship Architect & Commander
66% matchVery Positive94% of 12,599 reviews2022
Dev: Walternate Realities
Windows
Median: 19.4 hrsMean: 41.0 hrs≥1hr: 92%
Design and simulate the starships of your dreams! Command your ship or fleet in epic battles and manage your crew while exploring a dangerous galaxy. Play alone or with friends, test your ships in online PvP, and let your imagination reach for the stars!
Why similar: Space 42%, Sci-fi 40.8%, Strategy 17.3%
- #55 Space Station Tycoon
68% matchMixed61% of 216 reviews2023
Dev: Lunheim Studios
Windows
Median: 2.8 hrsMean: 8.5 hrs≥1hr: 78%
Create a thriving space station in a lost sector. Face thrilling challenges head-on, from pirate raids to asteroid impacts, as you lead your company to new heights.
Why similar: Colony Sim 22.2%, Tower Defense 17%, Economy 13%, Base Building 12.5%, Management 12%
- #56 Stardeus
67% matchVery Positive87% of 1,534 reviews2022
Dev: Kodo LinijaPub: Paradox Arc
Windows · Mac · Linux
Median: 9.0 hrsMean: 22.6 hrs≥1hr: 77%
Stardeus is a deep colony sim set on a broken starship manned by drones and hibernating human survivors. As the AI, have your drones repair your ship, save your crew and travel the stars in this beautiful simulation.
Why similar: Colony Sim 29%, Base Building 18%, Resource Management 13.7%, Space 13.7%, Management 10.1%
- #57 Aven Colony
68% matchMostly Positive72% of 2,747 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 47.4%, Base Building 15.9%, Sci-fi 11.4%, Strategy 8.8%, Space 8.3%
- #58 Final Upgrade
66% matchMostly Positive77% of 454 reviews2022
Dev: TaosX
Windows
Median: 3.8 hrsMean: 12.1 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: Base Building 19.8%, Space 15.9%, Resource Management 15%, Management 12.5%, RTS 10.7%
- #59 Mindustry
65% matchOverwhelmingly Positive96% of 26,625 reviews2019
Dev: AnukenDev
Windows · Mac · Linux
Median: 4.9 hrsMean: 27.5 hrs≥1hr: 76%
An open-ended factory management game with RTS and tower defense elements.
Why similar: Tower Defense 27.1%, Base Building 25.4%, Resource Management 18.8%, RTS 12.3%, Strategy 7.3%