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Games Like O.R.B: Off-World Resource Base

60+ similar titles based on shared tags and player behavior. Themes include Strategy, Sci-fi, RTS, Space.

O.R.B: Off-World Resource Base header art

An epic struggle for control!

Reviews: Mostly Positive — 78% — of 105 reviews
Released: 2014-03-13
Developer: Strategy First
Genres: Strategy
Platforms: Windows
Median playtime: 18 min
Mean playtime: 37.5 hrs
Players ≥ 1 hr: 41%

Overview

O.R.B: Off-World Resource Base is a cult-classic 3D space RTS that emphasizes resource management, base construction, and tactical fleet combat. These recommendations focus on titles that capture that same sense of scale, strategic depth, and sci-fi atmosphere, prioritizing games that balance complex economies with real-time tactical warfare.

Similar Games

View all 60 recommendations
  1. #1 Nexus - The Jupiter Incident
    97% 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 40%, Strategy 29%, RTS 21.4%, Sci-fi 9.5%

    Why You'll Like It: Focuses heavily on tactical fleet management and positioning in a 3D space environment similar to O.R.B.

  2. #2 Homeworld Remastered Collection
    96% matchVery Positive88% of 13,977 reviews2015
    Dev: Gearbox SoftwarePub: Gearbox Publishing
    Windows · Mac
    Median: 4.6 hrsMean: 34.0 hrs≥1hr: 85%

    Experience the epic space strategy games that redefined the RTS genre. Control your fleet and build an armada across more than 30 single-player missions. Choose unit types, fleet formations and flight tactics for each strategic situation.

    Why similar: Space 40%, RTS 29.8%, Strategy 22.3%, Sci-fi 7.9%

    Why You'll Like It: This is the definitive 3D space RTS experience that shares the same tactical depth and scale as O.R.B.

  3. #3 Homeworld: Deserts of Kharak
    96% matchMostly Positive79% of 8,793 reviews2016
    Dev: Blackbird InteractivePub: Gearbox Publishing
    Windows · Mac
    Median: 5.0 hrsMean: 9.6 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 41%, Strategy 33.2%, Space 15.4%, Sci-fi 10.5%

    Why You'll Like It: Developed by the same creative lineage, this game offers a grounded tactical RTS experience with a heavy focus on resource management.

  4. #4 Sins of a Solar Empire®: Rebellion
    95% matchVery Positive93% of 16,246 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: Space 34%, RTS 32.8%, Strategy 22.8%, Sci-fi 10.4%

    Why You'll Like It: A grand-scale space RTS that excels at blending 4X empire management with deep real-time fleet combat.

  5. #5 Etherium
    94% 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: Strategy 35.8%, RTS 27.2%, Space 18.9%, Sci-fi 18%

    Why You'll Like It: A sci-fi RTS that focuses on resource extraction and territory control on alien planets.

  6. #6 STAR WARS™ Empire at War - Gold Pack
    93% matchOverwhelmingly Positive98% of 41,807 reviews2010
    Dev: PetroglyphPub: LucasArts
    Windows
    Median: 3.8 hrsMean: 46.9 hrs≥1hr: 72%

    Command or corrupt an entire galaxy in the definitive Star Wars strategy collection. It is a time of galactic civil war. Will you take up the reins of the Rebellion, assume control of the Empire, or rule the Star Wars Underworld?

    Why similar: RTS 33.2%, Strategy 30.9%, Space 28.2%, Sci-fi 7.7%

    Why You'll Like It: Combines large-scale space fleet management with tactical combat, capturing the strategic feel of managing a war across systems.

  7. #7 Haegemonia: Legions of Iron
    94% matchMixed68% of 101 reviews2014
    Dev: Digital RealityPub: Microids
    Windows
    Median: 0 minMean: 25.0 hrs≥1hr: 27%

    From the makers of the award-winning Imperium Galactica 1 and 2 games, discover a powerful space-opera like RTS game.

    Why similar: Space 34.5%, Strategy 33.2%, RTS 28%, Sci-fi 4.3%

    Why You'll Like It: A classic space RTS that mirrors the era and mechanics of O.R.B. with its focus on planetary exploration and combat.

  8. #8 Ancient Space
    92% 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: Space 35.7%, Strategy 30.6%, RTS 27.3%, Sci-fi 6.4%

    Why You'll Like It: A story-driven space RTS that emphasizes fleet customization and tactical mission objectives.

  9. #9 Perimeter
    91% matchVery Positive85% of 259 reviews2014
    Dev: K-D LabPub: Fulqrum Publishing
    Windows
    Median: 2.5 hrsMean: 4.3 hrs≥1hr: 95%

    Perimeter is an innovative Real-Time-Strategy game that pits players against each other or AI opponents in a life and death struggle to seize territory and establish crucial protective “perimeters.” Players will be introduced to the game’s unique terraforming feature, allowing them to move, build, construct and destroy the map...

    Why similar: Strategy 46.1%, RTS 36.2%, Space 12.5%, Sci-fi 5.2%

    Why You'll Like It: Features unique RTS mechanics with a focus on terrain manipulation and base building in a sci-fi setting.

  10. #10 Star Ruler 2
    91% matchVery Positive82% of 719 reviews2015
    Dev: Blind Mind Studios
    Windows · Linux
    Median: 4.0 hrsMean: 8.9 hrs≥1hr: 93%

    Massive scale 4X-RTS set in space. Control hundreds of planets, manipulate galactic politics, research numerous advanced technologies, and command thousands of units and hundreds of planets in your quest for galactic dominance.

    Why similar: Space 34.8%, Strategy 29.2%, RTS 26.8%, Sci-fi 9.2%

    Why You'll Like It: Provides deep space strategy with complex resource management and customizable fleet design.

  11. #11 Supreme Commander: Forged Alliance
    89% matchOverwhelmingly Positive97% of 14,047 reviews2011
    Dev: Gas Powered GamesPub: Square Enix
    Windows
    Median: 6.8 hrsMean: 48.5 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 48.8%, Strategy 37.4%, Sci-fi 9.6%, Space 4.1%

    Why You'll Like It: Focuses on massive scale and complex economy management, which will appeal to fans of O.R.B.'s resource-heavy gameplay.

  12. #12 Grey Goo
    90% 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 47.7%, Strategy 34.8%, Sci-fi 11.1%, Space 6.3%

    Why You'll Like It: Offers classic RTS mechanics with a strong focus on base building and resource management.

  13. #13 Total Annihilation
    88% matchOverwhelmingly Positive97% of 3,674 reviews2015
    Dev: Cavedog EntertainmentPub: Wargaming.net
    Windows
    Median: 54 minMean: 13.8 hrs≥1hr: 47%

    What began as a conflict over the transfer of consciousness from flesh to machines escalated into a war which has decimated a million worlds. The Core and the Arm have all but exhausted the resources of a galaxy in their struggle for domination.

    Why similar: RTS 53.7%, Strategy 37.2%, Sci-fi 9.1%

    Why You'll Like It: The spiritual predecessor to many modern RTS games, focusing on economy and unit production at scale.

  14. #14 Ground Control II: Operation Exodus
    89% matchVery Positive89% of 317 reviews2015
    Dev: Massive EntertainmentPub: Rebellion
    Windows
    Median: 30 minMean: 8.2 hrs≥1hr: 40%

    It’s 2741 and the universe is at war. The Terran Empire is laying siege to the NSA, a treaty of colonies that upholds freedom and democracy. After losing the battle in space, the NSA is forced to retreat to its last stronghold. Can you snatch victory from impending doom?

    Why similar: Strategy 65.9%, RTS 27.5%, Sci-fi 6.6%

    Why You'll Like It: Focuses on tactical combat and unit positioning, stripping away base building to emphasize battlefield control.

  15. #15 NEBULOUS: Fleet Command
    86% matchVery Positive81% of 3,819 reviews2022
    Dev: Eridanus IndustriesPub: Hooded Horse
    Windows
    Median: 4.9 hrsMean: 30.4 hrs≥1hr: 77%

    Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other.

    Why similar: RTS 56%, Strategy 44%

    Why You'll Like It: Provides deep tactical fleet combat that captures the intensity and technical nature of space warfare.

  16. #16 Ashes of the Singularity: Escalation
    87% matchMostly Positive74% of 4,922 reviews2016
    Dev: Stardock Entertainment
    Windows
    Median: 3.2 hrsMean: 7.2 hrs≥1hr: 89%

    A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat.

    Why similar: RTS 53.6%, Strategy 33.4%, Sci-fi 12.9%

    Why You'll Like It: A large-scale RTS that emphasizes resource control and base expansion across expansive maps.

  17. #17 Sword of the Stars: Complete Collection
    86% matchVery Positive88% of 705 reviews2010
    Dev: Kerberos Productions Inc.Pub: Paradox Interactive
    Windows
    Median: 48 minMean: 28.2 hrs≥1hr: 48%

    Sword of the Stars: Complete Collection is the original Sword of the Stars games and the three expansions Born of Blood, A Murder of Crows and Argos Naval Yard. It is the year 2405, and human scientists have discovered a new technology that allows travel from star to star at speeds faster than light.

    Why similar: Strategy 49.3%, Space 39.6%, Sci-fi 11.1%

    Why You'll Like It: Blends 4X strategy with real-time tactical space combat, offering a similar strategic depth to O.R.B.

  18. #18 Galaxy Reavers
    85% 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: Space 34.7%, Strategy 32.3%, RTS 26%, Sci-fi 6.9%

    Why You'll Like It: Real-time space combat focusing on fleet positioning and ability usage in a sci-fi setting.

  19. #19 MoonBase Commander
    84% matchVery Positive89% of 180 reviews2014
    Dev: Humongous EntertainmentPub: Rebellion
    Windows
    Median: 2.9 hrsMean: 4.7 hrs≥1hr: 94%

    Explore. Strategize. Conquer.In the far future, Mankind has nearly exhausted all of earth’s natural resources. Fragile alliances between nations are tested to their limits as fierce wars ignite across land and space.MoonBase Commander puts you in charge of your own lunar territory in a quest to build the most powerful empire in space.

    Why similar: Strategy 100%

    Why You'll Like It: Strategic base building with a focus on resource territory control and tactical positioning.

  20. #20 Earth 2150 Trilogy
    84% matchMostly Positive79% of 1,004 reviews2013
    Dev: Reality Pump StudiosPub: Topware Interactive
    Windows · Mac · Linux
    Median: 3.9 hrsMean: 20.4 hrs≥1hr: 89%

    Your heroes and your armies will need strong leadership to take them on a spellbinding odyssey that has everything a gamer’s heart could wish for breathtaking worlds in space, battles against cunning enemies and even downright treason from your own government faction - are you up to it?

    Why similar: Strategy 86.5%, RTS 9.1%, Space 2.3%, Sci-fi 2.1%

    Why You'll Like It: A classic sci-fi RTS series that features robust base building and resource gathering mechanics.

  21. #21 Offworld Trading Company
    81% 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: Space 42.5%, Strategy 39.6%, Sci-fi 18%

    Why You'll Like It: Focuses entirely on the economic side of space resource management and market manipulation.

  22. #22 StarDrive
    83% matchMixed45% of 1,482 reviews2013
    Dev: Zero Sum Games
    Windows
    Median: 2.3 hrsMean: 6.7 hrs≥1hr: 88%

    As a space bear, human or any other race, venture forth into the galaxy, create custom ships, conquer new worlds, build new colonies and defend your very existence against those who would take what is yours.

    Why similar: Space 35.8%, Strategy 34%, RTS 22.6%, Sci-fi 7.6%

    Why You'll Like It: A 4X space strategy game that incorporates real-time combat elements similar to O.R.B.

  23. #23 Planets Under Attack
    82% 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 93.8%, Space 5%, Sci-fi 1.2%

    Why You'll Like It: A fast-paced space strategy game focusing on fleet expansion and rapid territory capture.

  24. #24 Sins of a Solar Empire II
    75% matchVery Positive84% of 8,167 reviews2024
    Dev: Ironclad Games CorporationPub: Stardock Entertainment
    Windows
    Median: 9.5 hrsMean: 28.7 hrs≥1hr: 85%

    Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.

    Why similar: Space 39.2%, RTS 28.6%, Strategy 24.3%, Sci-fi 7.9%

  25. #25 Deadlock: Planetary Conquest
    82% matchMixed52% of 112 reviews2014
    Dev: Accolade, Inc.Pub: Atari
    Windows

    Colonize A Planet. Dominate A World.

    Why similar: Strategy 100%

    Why You'll Like It: A classic game involving planetary management and combat strategy that feels very similar to O.R.B.

  26. #26 Fragile Allegiance
    80% matchVery Positive93% of 123 reviews2015
    Dev: Gremlin InteractivePub: Alternative Software Ltd
    Windows

    Assemble your fleets, fill your silos with nuclear warheads, conduct research, gather resources, and wage war in a vast galaxy in this unique take on 4X Strategy. Appoint Colony Supervisors to manage your colony and deploy Spy Satellites for the ultimate in skulduggery.

    Why similar: Strategy 61.8%, Space 38.2%

    Why You'll Like It: A retro space strategy game focusing on mining, base development, and planetary management.

  27. #27 BlackChain
    78% 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: RTS 35.8%, Space 31%, Strategy 22.6%, Sci-fi 10.6%

    Why You'll Like It: A sci-fi RTS that focuses on base building and tactical unit control in a singleplayer environment.

  28. #28 Executive Assault 2
    75% 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 39.4%, Space 29.8%, Strategy 23.7%, Sci-fi 7.1%

  29. #29 Aeon Command
    79% matchMostly Positive79% of 414 reviews2014
    Dev: Bat Country Games, LLC
    Windows · Mac · Linux
    Median: 3.0 hrsMean: 4.6 hrs≥1hr: 79%

    Aeon Command is a tug of war strategy game, where you play as one of three unique factions to help gain dominance over the Aeon Nebula! Take control of your mother ship to gather resources, produce ships and fight off the enemy mother ship. Grow stronger as you progress through the 24 mission campaign and unlock new upgrades.

    Why similar: Strategy 61.8%, Space 29.8%, Sci-fi 8.4%

    Why You'll Like It: A casual space RTS that focuses on lane-based combat and fleet upgrades.

  30. #30 Galaxy Control: 3D Strategy
    79% matchMixed59% of 530 reviews2016
    Dev: FX Games Media
    Windows · Mac
    Median: 1.1 hrsMean: 25.0 hrs≥1hr: 51%

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

    Why similar: Strategy 56.9%, Space 43.1%

    Why You'll Like It: A space strategy game with base building elements that focuses on defensive and offensive expansion.

  31. #31 Tempest Rising
    70% matchVery Positive88% of 10,866 reviews2025
    Dev: Slipgate Ironworks™Pub: 3D Realms
    Windows
    Median: 4.0 hrsMean: 10.1 hrs≥1hr: 84%

    Command distinct factions in a desperate struggle for power and resources in Tempest Rising - a classic RTS set on Earth after a nuclear war.

    Why similar: RTS 60.2%, Strategy 39.8%

  32. #32 Genesis Rising
    81% matchMostly Negative31% of 163 reviews2007
    Dev: MetamorfPub: THQ Nordic
    Windows
    Median: 18 minMean: 3.4 hrs≥1hr: 29%

    Three thousand years in the future, mankind has carved a bloody path towards domination of the known universe. Self-proclaimed as a divine race and beyond reproach as a species, they view all alien races as inferior.

    Why similar: Strategy 52.2%, Space 38.9%, Sci-fi 9%

    Why You'll Like It: A space RTS with a unique biological tech theme and a focus on fleet management.

  33. #33 Master of Orion 2
    76% matchOverwhelmingly Positive96% of 1,693 reviews2016
    Dev: SimTexPub: Wargaming Labs
    Windows · Mac · Linux
    Median: 18 minMean: 11.3 hrs≥1hr: 43%

    Forge an empire in a universe where population growth is stripping away planetary resources. Colonize unknown planets and trade with other races for their knowledge.

    Why similar: Strategy 51.1%, Space 39.6%, Sci-fi 9.4%

  34. #34 Master of Orion 1
    76% matchVery Positive90% of 436 reviews2016
    Dev: SimTexPub: Wargaming Labs
    Windows · Mac · Linux
    Median: 6 minMean: 5.9 hrs≥1hr: 31%

    Forge an empire in a universe where population growth is stripping away planetary resources. Colonize unknown planets and trade with other races for their knowledge.

    Why similar: Strategy 60.6%, Space 31.7%, Sci-fi 7.8%

  35. #35 Nightside
    78% matchMixed62% of 131 reviews2015
    Dev: OMNIDREAM CREATIONS
    Windows · Linux
    Median: 3.2 hrsMean: 4.0 hrs≥1hr: 92%

    A four races sci-fi base building real time strategy game set on the dark side of an unknown planet where the valuable "green ice" resource can be found.

    Why similar: Strategy 50.3%, RTS 39.2%, Sci-fi 10.6%

    Why You'll Like It: An indie RTS that emphasizes base building and resource gathering in a dark sci-fi setting.

  36. #36 Void Destroyer
    77% matchMixed60% of 351 reviews2015
    Dev: Iteration 11
    Windows
    Median: 18 minMean: 3.0 hrs≥1hr: 30%

    Combining the best of space combat and real time strategy. Victory can be tactical, a dogfight or capital ship slugging match - depending on how you decide to achieve it. Space combat on a RTS scale with space sim savagery.

    Why similar: Space 38.4%, Strategy 32.8%, RTS 20.9%, Sci-fi 7.9%

  37. #37 Star Ruler
    77% matchVery Positive83% of 340 reviews2010
    Dev: Blind Mind Studios
    Windows
    Median: 30 minMean: 6.2 hrs≥1hr: 41%

    Take command of a vast interstellar empire and safeguard your species from total extinction in a procedurally generated 3D galaxy (with the option to flatten it) from 1 System to 10,000+! Prove your species' ingenuity through a deep and intricate combat system where anything (from individual components on ships to the stars themselves)...

    Why similar: Strategy 37.2%, Space 35.2%, RTS 21.7%, Sci-fi 6%

  38. #38 Space Reign
    69% matchMostly Positive76% of 377 reviews2026
    Dev: Propulsive Games
    Windows

    An indie space-sim and strategy game featuring ship and fleet combat mixed with RTS elements. Complete contracts and Claim sectors for your faction in the near-future, where resource exploiting corporations are in a state of constant conflict over territory control.

    Why similar: Space 38.9%, RTS 28.7%, Strategy 21.5%, Sci-fi 10.9%

  39. #39 STAR WARS™ Rebellion
    74% matchVery Positive90% of 1,462 reviews2016
    Dev: Coolhand InteractivePub: LucasArts
    Windows
    Median: 12 minMean: 22.5 hrs≥1hr: 31%

    It is a time of great upheaval. The first Death Star has been destroyed, marking a major victory for the Rebellion. But the Empire remains strong. As commander, you must choose to take control of either the Rebel Alliance or the Galactic Empire. Your goal: complete domination of the galaxy.

    Why similar: Strategy 54.2%, RTS 23.3%, Space 14.2%, Sci-fi 8.3%

  40. #40 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: RTS 48.4%, Strategy 37%, Sci-fi 14.6%

  41. #41 Metal Fatigue
    73% matchVery Positive94% of 468 reviews2018
    Dev: ZonoPub: Nightdive Studios
    Windows
    Median: 1.0 hrsMean: 7.0 hrs≥1hr: 50%

    Metal Fatigue is a real-time strategy game taking the genre to new heights - literally. Build and customize your massive Combots to dominate the three battlefield levels simultaneously - from orbit, to the surface, and even underground!

    Why similar: Strategy 59.7%, RTS 40.3%

  42. #42 Annihilate The Spance
    68% 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: Space 37.5%, RTS 34.6%, Strategy 20%, Sci-fi 7.9%

  43. #43 Epic Astro Story
    72% matchVery Positive87% of 54 reviews2022
    Dev: Kairosoft Co.,Ltd
    Windows

    Battle baddies and foster interplanetary diplomacy in an epic space colony sim!

    Why similar: Space 53.4%, Sci-fi 27.8%, Strategy 18.8%

  44. #44 Sins of a Solar Empire: Trinity®
    74% matchMostly Positive77% of 809 reviews2011
    Dev: Ironclad Games CorporationPub: Stardock Entertainment
    Windows
    Median: 2.0 hrsMean: 30.9 hrs≥1hr: 59%

    In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.

    Why similar: RTS 33.3%, Space 33.2%, Strategy 23.5%, Sci-fi 10%

  45. #45 Battlevoid: Sector Siege
    73% matchMixed58% of 194 reviews2017
    Dev: Bugbyte Ltd.
    Windows · Mac · Linux

    Battlevoid: Sector Siege is an epic straight into action real-time space strategy game, in which the world has been built to deliver a lively battle field; and the action is never more than just seconds away at the start of every game.

    Why similar: Space 36.6%, Strategy 33.3%, RTS 24%, Sci-fi 6%

  46. #46 Industries of Titan
    69% 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: Space 46.6%, Strategy 38.6%, Sci-fi 14.8%

  47. #47 Battle for Orion 2
    73% matchVery Positive80% of 75 reviews2017
    Dev: Infinite Loop Games
    Windows · Mac · Linux

    Earth has been destroyed. Mankind is fractured. The galaxy is at war. But one hope remains: a new home for mankind. Probes detected a habitable planet in the Orion sector. You must fight your way to it, but nothing is as it seems. A more devious plan is underway that threatens the entire galaxy.

    Why similar: Strategy 100%

  48. #48 M.A.X.: Mechanized Assault & Exploration
    71% matchVery Positive88% of 207 reviews2017
    Dev: Interplay Entertainment Corp.
    Windows · Mac · Linux

    Colonize newly-discovered planets, control the resources found there, and defend your colony against other rival factions in real-time or turn-based action.

    Why similar: Strategy 68.3%, RTS 21.9%, Sci-fi 9.8%

  49. #49 PERIMETER: Legate Edition
    66% matchVery Positive92% of 139 reviews2024
    Dev: K-D LabPub: Association K-D Lab
    Windows · Linux

    Perimeter is a real-time strategy game with a destructible world. Utilize the environment for resource gathering and defense against enemies. Immerse yourself in the millennia-spanning history of the Chains of Worlds and lead a faction in the struggle for survival.

    Why similar: RTS 35.7%, Space 28.7%, Strategy 27.2%, Sci-fi 8.4%

  50. #50 StarFringe: Adversus
    68% matchMixed65% of 231 reviews2023
    Dev: CasualogicPub: Conglomerate 5
    Windows

    This is the story about the beginning of the conquest of outer space by earthlings. It began as a global idea of saving mankind from hunger and lack of resources, and ended as a brutal and merciless war in space far from Earth.

    Why similar: RTS 35.6%, Space 34.2%, Strategy 26.2%, Sci-fi 4%

  51. #51 Into the Void
    72% matchMixed63% of 136 reviews2015
    Dev: Mozg Labs
    Windows · Mac · Linux
    Median: 5.5 hrsMean: 13.8 hrs≥1hr: 98%

    Into the Void is a strategy RPG and exploration sci-fi game with an epic story and intense battles. Travel through space and discover the origin of a cosmic threat which destroyed Earth centuries ago. Fight or cooperate with the different factions; be a leader !

    Why similar: Space 55.8%, Strategy 44.2%

  52. #52 Orbital X
    71% matchVery Positive84% of 50 reviews2016
    Dev: Filippo Ceffa
    Windows · Mac · Linux
    Median: 3.1 hrsMean: 3.5 hrs≥1hr: 93%

    An epic journey through the endless space!

  53. #53 Nova Empire
    67% matchMixed53% of 283 reviews2022
    Dev: Gamebear Tech
    Windows
    Median: 1.9 hrsMean: 12.5 hrs≥1hr: 57%

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

    Why similar: Strategy 54.4%, Space 23.9%, Sci-fi 21.7%

  54. #54 Original War
    67% matchVery Positive95% of 2,131 reviews2014
    Dev: Altar GamesPub: Bohemia Interactive
    Windows
    Median: 1.0 hrsMean: 14.6 hrs≥1hr: 51%

    An American geological expedition, under a UN mandate, assesses the natural resources in a distant part of Siberia, deep in the trackless steppes of Eastern Russia. But instead of oil, they discover a deposit of a hitherto unknown mineral.

    Why similar: RTS 48.3%, Strategy 37.2%, Sci-fi 14.6%

  55. #55 Lords of the Black Sun
    71% matchMostly Negative20% of 395 reviews2014
    Dev: Arkavi StudiosPub: Iceberg Interactive
    Windows
    Median: 3.6 hrsMean: 4.6 hrs≥1hr: 90%

    Take command of one race to join the struggle for supremacy in the galaxy. As the leader of your empire you are tasked with exploring the stars, colonizing new worlds, managing your empire and conquering whoever dares to oppose you.

    Why similar: Strategy 48.4%, Space 45.1%, Sci-fi 6.5%

  56. #56 STAR WARS™ Galactic Battlegrounds Saga
    66% matchVery Positive91% of 4,575 reviews2016
    Dev: Ensemble StudiosPub: Disney
    Windows
    Median: 54 minMean: 7.4 hrs≥1hr: 48%

    Lead the great armies of the Star Wars™ Episode II: Attack of the Clones saga in intense real-time strategy clashes. Enter the fray as the Galactic Empire, Rebel Alliance, Wookies, Trade Federation, Gungans or Royal Naboo to determine the course of the Galactic Civil War.

    Why similar: RTS 49.9%, Strategy 43%, Sci-fi 7.1%

  57. #57 Deep Space Battle Simulator
    65% matchMostly Positive79% of 410 reviews2021
    Dev: yeswecamp
    Windows · Linux
    Median: 42 minMean: 3.8 hrs≥1hr: 38%

    Two teams of players control their capital ship in an epic battle. Customize your ship, control its movement, weapons, and energy distribution or go to one of the hangars to join the battle in a smaller fighter!

    Why similar: Space 33.8%, RTS 31%, Strategy 24.3%, Sci-fi 10.8%

  58. #58 Perimeter: Emperor's Testament
    69% matchMixed66% of 50 reviews2014
    Dev: K-D LabPub: Fulqrum Publishing
    Windows
    Median: 1.0 hrsMean: 25.1 hrs≥1hr: 51%

    The game expands the story of the original Perimeter in a vast singleplayer campaign.

    Why similar: Strategy 55%, Space 24.8%, RTS 20.3%

  59. #59 PlanetX
    62% 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: RTS 36%, Strategy 31.5%, Space 24.2%, Sci-fi 8.2%

  60. #60 Imperium Galactica
    67% matchVery Positive93% of 154 reviews2017
    Dev: Digital RealityPub: THQ Nordic
    Windows

    Imperium Galactica. The Universe is yours... if you can handle it. The fourth millennium. Mankind has colonised the galaxy. Created an Empire. Now, it is crumbling. The aliens are restless. The oppressed are building armies. And a strange invader is headed for the heart of the Empire.

    Why similar: Strategy 100%

O.R.B: Off-World Resource Base cover art

Games Like O.R.B: Off-World Resource Base

Based on tag similarity + player behavior
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