- #1 From Glory To Goo
97% matchOverwhelmingly Positive97% of 1,455 reviews2024
Dev: Stratagem Blue
Windows
Median: 4.0 hrsMean: 16.4 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 21.9% ★, Colony Sim 18.3% ★, RTS 16.4%, Tower Defense 15.5%, Base Building 13.8%
- #2 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%, Base Building 12.2%, Tower Defense 12%, Real Time Tactics 10.5%
- #3 The Crust
96% matchMostly Positive77% of 3,397 reviews2024
Dev: VEOM StudioPub: Crytivo
Windows
Median: 7.0 hrsMean: 22.5 hrs≥1hr: 83%
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 25.3% ★, Base Building 17.3%, Resource Management 13.1%, Space 12.8%, RTS 11%
- #4 Planetbase
95% 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 35.5% ★, Base Building 20.2%, Space 14.9%, Resource Management 8.1%, Management 6.3%
- #5 They Are Billions
94% matchVery Positive85% of 50,609 reviews2019
Dev: Numantian Games
Windows
Median: 14.1 hrsMean: 56.0 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 28.2% ★, Base Building 23.4%, RTS 18.8%, Tower Defense 14.6%, Strategy 5.8%
- #6 MarZ: Tactical Base Defense
94% matchMostly Positive78% of 885 reviews2019
Dev: Giant Grey
Windows
Median: 2.5 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 21.7%, Mars 18.7% ★, RTS 18.5%, Base Building 11.3%, Management 8.1%
- #7 Executive Assault 2
93% matchVery Positive83% of 1,726 reviews2023
Dev: Hesketh Studios Ltd
Windows · Mac
Median: 4.0 hrsMean: 8.4 hrs≥1hr: 76%
The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.
Why similar: RTS 27%, Action RTS 18.9% ★, Base Building 17.6%, Space 12.3%, Real Time Tactics 10.8%
- #8 Here Comes The Swarm
92% matchVery Positive88% of 161 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 17.5% ★, Colony Sim 16.6% ★, RTS 13.1%, Base Building 10.9%, Tower Defense 10.9%
- #9 IXION
91% 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: Colony Sim 25.2% ★, Space 18%, Resource Management 14.8%, Base Building 14.2%, Economy 9.7%
- #10 Maia
91% matchMixed44% of 1,063 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% ★, Base Building 12.8%, Management 12.5%, Sci-fi 11.1%, Space 9.8%
- #11 Drill Core
89% matchVery Positive85% of 2,264 reviews2025
Dev: Hungry Couch GamesPub: tinyBuild
Windows
Median: 6.6 hrsMean: 14.6 hrs≥1hr: 89%
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% ★, Tower Defense 21.4%, Base Building 15.1%, Management 8.8%, Strategy 7.2%
- #12 Taur
89% matchMostly Positive80% of 2,078 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 32.2%, Base Building 17.2%, RTS 14.6%, Real Time Tactics 10.7%, Strategy 8.9%
- #13 Outworld Station
87% matchVery Positive90% of 506 reviews2025
Dev: Trickjump Games Ltd
Windows
Median: 3.9 hrsMean: 9.1 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 18.2%, RTS 16.7%, Space 14.2%, Management 11.5%, Resource Management 9.6%
- #14 Colony Survival
88% matchVery Positive92% of 8,816 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 50.6% ★, Base Building 27.1%, Management 8.8%, RTS 6.8%, Strategy 6.7%
- #15 Rogue Command
86% matchVery Positive92% of 546 reviews2024
Dev: feneq
Windows
Classic RTS gameplay fused with a modern roguelite. Shape your build each run by assembling an evolving arsenal of powerful units and facilities. Harvest resources, build out your base. Raise your army and call down orbital strikes to overcome the forces threatening your survival.
Why similar: Action RTS 27.8% ★, RTS 19.8%, Base Building 14.9%, Resource Management 12.3%, Space 11.1%
- #16 Stranded: Alien Dawn
86% matchVery Positive85% of 10,890 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 29.6%, Colony Sim 27.8% ★, Management 11.5%, Resource Management 10.5%, Strategy 8.1%
- #17 Industries of Titan
85% 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 31.9% ★, Base Building 18.7%, Resource Management 18.6%, Space 13.4%, Sci-fi 9.9%
- #18 Space Haven
84% 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: Colony Sim 28.7% ★, Base Building 17.9%, Management 13.1%, Resource Management 12.8%, Space 12.7%
- #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 15.5%, Base Building 11.9%, Space 8.1%
- #20 Byte Lynx
83% 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 15.9%, Base Building 13.2%, Tower Defense 13.1%, Real Time Tactics 10.3%
- #21 Desynced
81% 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: RTS 24.2%, Base Building 20.8%, Resource Management 14.4%, Management 13.8%, Sci-fi 10.7%
- #22 Per Aspera
82% 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: Mars 26.8% ★, Colony Sim 20% ★, Base Building 13.1%, Resource Management 10.5%, Management 10.1%
- #23 Annihilate The Spance
80% matchVery Positive91% of 338 reviews2025
Dev: Skyglow Softworks
Windows
The Spance approaches, a vast and mysterious storm at the edge of humanity. Who shall claim its riches? Brave the perils of the depths in a story-rich singleplayer campaign with numerous distinct factions and bosses. An RTS base builder with huge battles, constant production, and autonomous ships.
Why similar: RTS 26.5%, Base Building 23.1%, Space 17.3%, Resource Management 12.4%, Sci-fi 8.5%
- #24 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 19.3%, Space 16.4%, Management 14.3%, PvE 9.3%
- #25 Grey Goo
82% matchMixed68% of 4,315 reviews2015
Dev: PetroglyphPub: Six Foot
Windows
Median: 5.2 hrsMean: 8.8 hrs≥1hr: 90%
Fight for control of a frontier world. Gather resources, build your base, and command your forces in battle. Survive long enough to unleash your ultimate weapon - THE EPIC.
Why similar: RTS 48.7%, Base Building 17.2%, Sci-fi 15.9%, Strategy 14.3%, Space 3.9%
- #26 Dyson Sphere Program
78% 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: Base Building 26.5%, Space 20.6%, Resource Management 16.6%, Management 12.6%, Sci-fi 9.6%
- #27 Space Architect
79% matchMostly Positive76% of 283 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 24.4% ★, Base Building 15.2%, Management 11.4%, Economy 11.3%, Resource Management 10%
- #28 New Cycle
79% matchMostly Positive79% of 2,783 reviews2024
Dev: Core EngagePub: Daedalic Entertainment
Windows
Median: 4.8 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 28.9% ★, Base Building 17.5%, Resource Management 13.7%, Management 11.6%, Sci-fi 8.8%
- #29 Infection Free Zone
78% matchVery Positive80% of 17,172 reviews2024
Dev: Jutsu GamesPub: Games Operators
Windows
Median: 6.8 hrsMean: 17.3 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 28.8% ★, Base Building 20.3%, Colony Sim 17.9% ★, RTS 15.1%, Management 10.1%
- #30 Cataclismo
77% matchVery Positive89% of 4,077 reviews2025
Dev: Digital SunPub: Hooded Horse
Windows
Median: 4.1 hrsMean: 8.6 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%, Tower Defense 14.9%, Base Building 13.3%, Isometric 11.3%
- #31 Tower Dominion
76% matchVery Positive86% of 4,827 reviews2025
Dev: Parallel 45 Games
Windows
Median: 11.7 hrsMean: 21.5 hrs≥1hr: 90%
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 24.7%, RTS 20.5%, Base Building 17.8%, Resource Management 12.1%, Isometric 10.4%
- #32 Protolife
77% matchVery Positive86% of 465 reviews2018
Dev: Volcanic Giraffe
Windows · Mac
Median: 3.2 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 27.5%, Tower Defense 26.8%, Base Building 21.4%, Sci-fi 10.3%, Strategy 7.5%
- #33 Last Outpost
75% matchMostly Positive78% of 78 reviews2025
Dev: Troyd Games
Windows
Last Outpost is a minimalist Base Building & Strategy game where you build and defend your outpost in zombie apocalypse. Choose your vehicle and loadout before embarking on your adventure. Use your abilities and control your units to eliminate all threats. Will you manage to defend your outpost?
Why similar: Tower Defense 21.5%, Action RTS 20.8% ★, RTS 20.4%, Base Building 15.8%, Isometric 12.5%
- #34 Stationeers
75% matchVery Positive88% of 8,897 reviews2017
Dev: RocketWerkz
Windows
Median: 9.8 hrsMean: 81.9 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 29.1% ★, Base Building 19.2%, Resource Management 14.9%, Space 13.8%, Management 13.3%
- #35 Ascent of Ashes
74% matchMostly Positive71% of 294 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 26.7% ★, Real Time Tactics 17.8%, Base Building 16.7%, Isometric 12.8%, Management 12%
- #36 ERA ONE
73% matchVery Positive86% of 1,348 reviews2025
Dev: Team Complex LTD
Windows
Median: 3.4 hrsMean: 14.0 hrs≥1hr: 67%
Era One is an innovative space game that combines elements of real-time strategy, base building, space survival, and tactical battles. Players can create and customize their bases from scratch, construct various types of structures and warships, manage fleets, and engage in tactical space battles.
Why similar: Action RTS 28.5% ★, RTS 18.2%, Real Time Tactics 17.8%, Base Building 13.2%, Space 11.3%
- #37 Reshaping Mars
74% 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: Mars 22.6% ★, Colony Sim 16.8% ★, RTS 15.9%, Base Building 12.9%, Space 7.9%
- #38 Astro Colony
73% matchVery Positive82% of 2,509 reviews2022
Dev: Terad Games
Windows
Median: 4.7 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% ★, Base Building 26.4%, Resource Management 17.8%, Space 17.4%, Strategy 6.4%
- #39 PERIMETER: Legate Edition
73% matchVery Positive92% of 139 reviews2024
Dev: K-D LabPub: Association K-D Lab
Windows · Linux
Perimeter is a real-time strategy game with a destructible world. Utilize the environment for resource gathering and defense against enemies. Immerse yourself in the millennia-spanning history of the Chains of Worlds and lead a faction in the struggle for survival.
Why similar: Action RTS 29.4% ★, RTS 21.1%, Space 10.2%, Top-Down 8%, Sci-fi 7%
- #40 Starship Theory
76% matchMixed50% of 1,100 reviews2017
Dev: Reconnect Software
Windows · Mac · Linux
Median: 7.4 hrsMean: 15.5 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 23.7%, Management 16.8%, Sci-fi 11.9%, Strategy 11.1%
- #41 Stardeus
72% matchVery Positive87% of 1,529 reviews2022
Dev: Kodo LinijaPub: Paradox Arc
Windows · Mac · Linux
Median: 8.7 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 28.9% ★, Base Building 17.9%, Resource Management 14%, Space 13.6%, Management 10.2%
- #42 Oxygen Not Included
71% matchOverwhelmingly Positive97% of 138,890 reviews2019
Dev: Klei Entertainment
Windows · Mac · Linux
Median: 8.9 hrsMean: 67.7 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 39.7% ★, Base Building 23.9%, Resource Management 15%, Management 8.5%, Space 6.2%
- #43 Outpost: Infinity Siege
71% matchMixed66% of 13,528 reviews2024
Dev: Team RangerPub: Lightning Games
Windows
Median: 16.2 hrsMean: 41.5 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 22.7%, RTS 20.3%, Base Building 19.6%, Resource Management 15.6%, Sci-fi 9.9%
- #44 IDUN - Frontline Survival
71% matchMostly Positive79% of 671 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 21.2%, Tower Defense 20.5%, Base Building 16.8%, Space 12%, Sci-fi 9.1%
- #45 SENTRY
70% matchVery Positive83% of 853 reviews2024
Dev: Fireblade Software
Windows
Median: 2.7 hrsMean: 5.2 hrs≥1hr: 70%
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 43.2%, Space 19.4%, Sci-fi 18.1%, Strategy 12.5%, 3D 6.7%
- #46 Tower Factory
69% matchVery Positive89% of 1,139 reviews2024
Dev: Gius Caminiti
Windows
Median: 2.1 hrsMean: 5.8 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 21.6% ★, Tower Defense 18.1%, RTS 17.6%, Base Building 14.8%, Resource Management 11.3%
- #47 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 17.7%, RTS 17.5%, Base Building 12.2%, Management 7.7%
- #48 Oasis Mission: Colony Sim
70% 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 20.7% ★, RTS 14.2%, Real Time Tactics 12.4%, Base Building 11.9%, Economy 11.4%
- #49 Final Factory
69% matchMostly Positive79% of 300 reviews2024
Dev: Never Games Limited
Windows · Mac
Median: 1.9 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 19%, RTS 14.6%, Space 14.4%, Sci-fi 11%
- #50 Mindustry
68% matchOverwhelmingly Positive96% of 25,660 reviews2019
Dev: AnukenDev
Windows · Mac · Linux
Median: 4.9 hrsMean: 26.9 hrs≥1hr: 76%
An open-ended factory management game with RTS and tower defense elements.
Why similar: Tower Defense 27%, Base Building 25.4%, Resource Management 19.2%, RTS 11.8%, Strategy 7.3%
- #51 Space Station Tycoon
69% matchMixed61% of 215 reviews2023
Dev: Lunheim Studios
Windows
Median: 2.8 hrsMean: 8.6 hrs≥1hr: 79%
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 22.1% ★, Tower Defense 17%, Economy 13.2%, Base Building 12.5%, Management 12.1%
- #52 Cosmoteer: Starship Architect & Commander
66% matchVery Positive95% of 12,431 reviews2022
Dev: Walternate Realities
Windows
Median: 19.3 hrsMean: 40.4 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 41.8%, Sci-fi 40.8%, Strategy 17.4%
- #53 rymdkapsel
70% 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 19.5%, Real Time Tactics 19.1%, Tower Defense 18.6%, Base Building 13.9%, Space 9.4%
- #54 Dark Moon
67% matchMixed49% of 150 reviews2025
Dev: Jujubee S.A.Pub: 101XP
Windows
Dark Moon is a survival strategy game where in order to survive you must avoid the Sun’s scorching rays and embrace the darkness. Gather resources, upgrade your mobile base, make tough moral decisions, but most importantly - don’t go into the light!
Why similar: Colony Sim 21.1% ★, Economy 13.8%, Base Building 13.8%, RTS 13.4%, Management 11%
- #55 Exogate Initiative
65% 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 20% ★, RTS 15.5%, Base Building 14.7%, Resource Management 11.8%, Management 11.2%
- #56 Offworld Trading Company
67% 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 22.4% ★, Economy 15.1%, Resource Management 12.1%, Base Building 11.7%, Management 10.2%
- #57 Final Outpost: Definitive Edition
65% matchMostly Positive77% of 193 reviews2025
Dev: Exabyte Games
Windows · Mac · Linux
Final Outpost is a survival strategy base-builder. You lead the last survivors of the apocalypse. Assign roles, craft tools, and manage resources carefully. Construct buildings, level up your citizens, and fortify your town against hordes of zombies. How many days can you survive?
Why similar: Colony Sim 18.1% ★, Base Building 13.9%, RTS 13.6%, Tower Defense 12.1%, Action RTS 12.1% ★
- #58 Dawn Apart
65% matchMostly Positive73% of 239 reviews2025
Dev: Industrial Technology and WitchcraftPub: Astra Logical
Windows
Dawn Apart is a space colony and factory sim with fully destructible environments. Mine, automate, and defend your settlers, or lead a rebellion against the very corporation pulling your strings…
Why similar: Colony Sim 42.3% ★, Base Building 26%, Space 13.4%, Strategy 7.6%, Resource Management 7%
- #59 The Pioneers: Surviving Desolation
66% matchMixed68% of 434 reviews2023
Dev: Supercube
Windows
Deep and innovative space survival simulation experience. Build your station, manage your crew and explore the harsh environment of Io, the innermost moon of Jupiter. Are you brave enough to survive?
Why similar: RTS 19.6%, Base Building 17%, Real Time Tactics 16.2%, Management 13%, Resource Management 11.2%