- #1 DarkOrbit Reloaded
97% matchMostly Negative32% of 505 reviews2025
Dev: Bigpoint GmbH
Windows
Dark Orbit is a free-2-play space MMO where three companies battle for galactic domination. Customize ships, trade resources, fight aliens and uncover a grand conspiracy on your epic cosmic journey. Thrilling PvP and PvE missions await! Will you lead your faction beyond the final frontier?
Why similar: MMORPG 47.7% ★, Space Sim 38.8%, Adventure 7.9%, 2D 3.5%, Action 2.1%
- #2 Astroflux
96% matchMostly Positive72% of 348 reviews2016
Dev: Fula Fisken
Windows · Mac
Median: 3.5 hrsMean: 19.6 hrs≥1hr: 69%
Play Astroflux - a retro styled, action packed MMO space shooter.
Why similar: Bullet Hell 39.5%, Action 26.8%, Adventure 26.6%, 2D 7.2%
- #3 Shattered Void
96% matchMostly Positive72% of 95 reviews2024
Dev: yyy1505yyy
Windows · Linux
Space MMORPG where players can fly on different ships, collecting devices, subsystems and navigations or finding new weapons that will serve in battles. Take part in battles, explore the world, mine ore, trade, fight and build your own clan with a station.
Why similar: MMORPG 36.8% ★, Real Time Tactics 32.7%, Top-Down 12.5%, Simulation 8%, 2D 5.5%
- #4 Nova Empire
94% matchMixed53% of 302 reviews2022
Dev: Gamebear Tech
Windows
Median: 1.6 hrsMean: 11.6 hrs≥1hr: 56%
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: Space Sim 38%, Real Time Tactics 31%, Strategy 10.7%, Top-Down 10.5%, Exploration 9.8%
- #5 Space Battle Royale
93% matchVery Positive86% of 80 reviews2023
Dev: MultiversalME
Windows
Welcome to cosmic chaos. This non-stop action arcade will test you to see if you are truly worthy of space travel. The full use of 3d space, five classes of weapons, and upgrades based on alien technology and alternative dimensions make for the most competitive and mind-expanding game out there.
Why similar: Real Time Tactics 41.7%, Cinematic 34.9%, Colorful 11.9%, Action 11.5%
- #6 Project Entropy
92% matchMixed52% of 266 reviews2024
Dev: FunPlus International AG
Windows
Welcome, commander, to Project Entropy- an ultimate Sci-Fi and role-playing game with battles in space. In this immersive MMO experience, you will command alien civilizations, conquer uncharted planets, and build Hero fleets.
Why similar: Grand Strategy 36.3%, Cinematic 25.2%, Realistic 11.6%, Strategy 11%, Simulation 10.4%
- #7 Iron Armada
91% matchMostly Positive77% of 177 reviews2024
Dev: Bluedrake42Pub: Drakeling Labs
Windows
Median: 1.4 hrsMean: 849.8 hrs≥1hr: 53%
Iron Armada is a multiplayer, space-faring combat game where players must team up to build a fleet of ships in order to survive the perils of space and defeat the opposing player faction. Build ships of all shapes and sizes, mine resources, and scavenge parts with friends to conquer the universe!
Why similar: Strategy 58.3%, Action 33.3%, Adventure 5.4%, 2D 3%
- #8 Galaxy Control: 3D Strategy
91% matchMixed59% of 549 reviews2016
Dev: FX Games Media
Windows · Mac
Median: 1.1 hrsMean: 32.6 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 85.4%, Action 14.6%
- #9 Subspace Discovery
90% matchMostly Positive74% of 145 reviews2023
Dev: FLICK Comp GmbH
Windows
Fly through Subspace, build your own ship, and engage in epic battles. Mine asteroids and research new technologies. Uncover the origins of the alien homeworld by solving weekly events in this Co-op PvE MMO.
Why similar: MMORPG 57.1% ★, Exploration 12.3%, Top-Down 12%, Strategy 9.1%, 2D 5.3%
- #10 The Infinite Black
89% matchMixed67% of 215 reviews2016
Dev: SpellbookPub: www.Spellbook.com
Windows · Mac · Linux
Median: 5.8 hrsMean: 83.8 hrs≥1hr: 74%
Fleet up with thousands of players in The Infinite Black -- The wildly popular online space combat and adventure game! Command massive spaceships, form powerful corporations, and battle it out in never-ending intergalactic warfare!
Why similar: Strategy 100%
- #11 Battle Arena
89% matchMixed64% of 58 reviews2019
Dev: ShadowWolf Games
Windows
Battle Arena is a multiplayer, immersive 2D Sci-Fi shooter! Plunge into the world of space battles and be the first!
Why similar: Action 100%
- #12 Galcon 2: Galactic Conquest
88% matchVery Positive83% of 869 reviews2014
Dev: Hassey Enterprises, Inc.
Windows · Mac · Linux
Median: 42 minMean: 6.2 hrs≥1hr: 41%
Galcon 2 is a demolition derby in space! Send swarms of ships from planet to planet to conquer the galaxy in this fast paced multiplayer strategy game!
Why similar: Strategy 74.1%, Arcade 25.9%
- #13 Star Conflict
87% matchMostly Positive73% of 15,239 reviews2013
Dev: Star Gem Inc.Pub: Gaijin Network Ltd
Windows · Mac · Linux
Median: 2.0 hrsMean: 34.6 hrs≥1hr: 62%
Star Conflict is an action-packed, massively multiplayer space simulation game that puts players in the role of elite pilots engaging in a widespread interplanetary skirmish. The whole world for PVP and PVE!
Why similar: Space Sim 89.3%, Action 10.7%
- #14 Astro Lords
86% matchMixed65% of 231 reviews2015
Dev: Aratog LLCPub: Conglomerate 5
Windows · Mac · Linux
Median: 48 minMean: 6.2 hrs≥1hr: 44%
Player bases are located on asteroids, which travel within the Oort Cloud. Once they’ve acquired the appropriate skills, players can control their asteroid’s movements. Mass-combat enthusiasts will love the Arena: here, players can battle it out against alien races or other Astro Lord players.
Why similar: MMORPG 45.5% ★, Space Sim 34.4%, Strategy 8.5%, Simulation 6.9%, Action 4.8%
- #15 Starblast
85% matchVery Positive81% of 1,121 reviews2017
Dev: Neuronality
Windows · Mac
Median: 2.2 hrsMean: 23.5 hrs≥1hr: 64%
Fun, fast paced online multiplayer arcade space shooter. Take control of your spaceship, mine asteroids, increase your stats, upgrade to different types of spaceships with improved stats and weapons. Fight against other players and collect their gems.
Why similar: Arcade 33.5%, Action 29.6%, Top-Down 24.5%, 2D 12.4%
- #16 Star Sonata 2
84% matchMixed67% of 293 reviews2020
Dev: Landauer Games
Windows
Median: 2.1 hrsMean: 60.2 hrs≥1hr: 60%
Star Sonata 2 is a space sandbox MMO that combines elements of action, RPG, and empire creation into a truly unique MMO. Explore the sandbox style universe, build persistent bases, construct trade ships, and even fight your way to the top and claim the Emperor’s Throne!
Why similar: MMORPG 50.4% ★, Space Sim 35.9%, Top-Down 13.7%
- #17 Exocraft
84% matchMixed52% of 361 reviews2019
Dev: GoldFire Studios
Windows · Mac
Design unique spaceships and build the ultimate space mining fleet as you team up to battle for resources and glory in this massively multiplayer action strategy set in an alien wasteland.
Why similar: MMORPG 34% ★, Space Sim 29.6%, Top-Down 7.4%, Strategy 7.3%, Arcade 7.3%
- #18 Gangs of Space
82% matchMostly Positive76% of 433 reviews2017
Dev: Little Big MMO
Windows · Mac · Linux
Median: 1.1 hrsMean: 293.6 hrs≥1hr: 53%
Gangs of Space is a massively-multiplayer Rogue Shmup where Gangs of players compete for the conquest of the galaxy.
Why similar: MMORPG 66.4% ★, Bullet Hell 26.1%, Action 7.5%
- #19 The Infinite Black 2
81% matchVery Positive85% of 238 reviews2023
Dev: SpellbookPub: www.Spellbook.com
Windows
Command a fleet of ships to hunt aliens, trade resources and loot treasure! Form corporations with your friends while fighting a never-ending intergalactic war in this open-world online space adventure!
Why similar: MMORPG 41.6% ★, Space Sim 41%, Exploration 7.8%, Adventure 4.8%, Action 4.7%
- #20 Worbital
81% matchVery Positive89% of 484 reviews2019
Dev: Team Jolly Roger
Windows · Mac
Median: 4.2 hrsMean: 8.8 hrs≥1hr: 85%
With the shifting gravity on your side, aim your cannons, blast your enemies and enjoy the fireworks. Worbital is a real-time strategic artillery game in space, peppered with a heavy dose of cosmic chaos. The goal: be the last civilization standing!
Why similar: Strategy 44.6%, 2D 29.1%, Action 26.3%
- #21 PlanetX
79% matchMixed67% of 54 reviews2025
Dev: Giedrius Talzunas
Windows · Mac
PlanetX is a real-time strategy MMO set on a spherical planet. Players expand territories, construct buildings, and manage resources to develop their empire. The ultimate goal is to conquer the entire planet by claiming all land plots and outpacing rivals in strategic growth and domination.
Why similar: Grand Strategy 79.9%, Strategy 20.1%
- #22 Pixel Starships
79% matchMostly Positive73% of 3,020 reviews2023
Dev: SavySoda
Windows · Mac · Linux
Median: 2.2 hrsMean: 24.2 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 Sim 75.4%, Strategy 15.9%, 2D 8.8%
- #23 Arena
80% matchMixed70% of 56 reviews2019
Dev: FX GAMES
Windows · Mac
Enter the Arena! From the creators of Galaxy Control comes a real-time multiplayer game starring the space stations assault and defence, your favorite Galay Control characters and much, much more.
Why similar: Strategy 100%
- #24 Solaris
77% matchVery Positive80% of 90 reviews2021
Dev: SpacialCircumstances
Windows · Mac · Linux
Discover a space strategy game filled with conquest, betrayal and subterfuge. Build alliances, make enemies and fight your way to victory and galactic domination. Will you conquer the galaxy?
Why similar: Real Time Tactics 59.5%, Strategy 30.7%, 2D 9.8%
- #25 Hades' Star
77% matchMostly Positive73% of 2,686 reviews2019
Dev: Parallel Space Inc
Windows · Mac
Median: 1.6 hrsMean: 54.9 hrs≥1hr: 56%
A unique space strategy game where thousands of players participate in one shared galaxy.
Why similar: Strategy 84.3%, 2D 15.7%
- #26 Relentless Expanse
75% matchVery Positive90% of 114 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: Grand Strategy 43.6%, Real Time Tactics 28.9%, Strategy 11.8%, Top-Down 11.1%, 2D 4.6%
- #27 EVE Online
76% matchMostly Positive73% of 39,560 reviews2010
Dev: Fenris Creations
Windows · Mac
Median: 3.0 hrsMean: 139.3 hrs≥1hr: 72%
Over 20 years of legendary space battles! Explore a massive living universe of danger and opportunity in a challenging and highly rewarding space adventure. Fight, trade, build, and connect with a universe driven and shaped directly by players.
Why similar: Space Sim 58.2%, Exploration 13%, Simulation 11.9%, Strategy 9.7%, Adventure 7.3%
- #28 Beyond the Void
78% matchMixed58% of 137 reviews2018
Dev: B2Expand
Windows · Mac
Median: 1.9 hrsMean: 10.7 hrs≥1hr: 57%
Beyond the Void is a new hybrid strategy game in space, with RTS and MOBA mechanics. It's F2P. Experience the thrill of being a Captain and lead epic space wars in 1 vs1. Design your own strategy and fleet to become the one who'll dominate the galaxy!
Why similar: Strategy 100%
- #29 Periphery Online
74% matchMixed71% of 55 reviews2026
Dev: Aleksandr Nagaev
Windows
A refugee capsule lands on an uninhabited planet. You have to survive, rebuild civilization and, if possible, regain control over the Earth. One big universe, one endless pvp session for all players.
Why similar: Grand Strategy 61.4%, Top-Down 17.5%, Strategy 16.1%, Exploration 5%
- #30 Andromeda: Rebirth of Humanity
75% matchMixed65% of 118 reviews2021
Dev: Null Reference Games
Windows · Linux
Andromeda is a hybrid between a Space 4X and an MMO. An online universe sandbox with 2 galaxies full of planets to colonize. Build structures like Mines to generate resources to build ships and engage in fleet battles with NPCs and other players, or just sit and chat with the friendly community.
Why similar: Space Sim 71.2%, Strategy 22.2%, Simulation 6.6%
- #31 Starborne Frontiers
72% matchMixed67% of 310 reviews2024
Dev: Solid Clouds hf.
Windows
Starborne: Frontiers is a free-to-play tactical autobattler with hundreds of unique ships. Form your fleet, customize it with a variety of equipment, and use strategy to create the perfect battlefield formation. Take on bounties, engage in the PvP arena, and bring order to the Frontier.
Why similar: Space Sim 68.6%, Strategy 14.3%, Exploration 10%, 2D 7.1%
- #32 Galaxy Idle Clicker
71% matchMostly Positive74% of 1,214 reviews2025
Dev: SoehnlePub: TimeLost Gaming
Windows
Median: 9.9 hrsMean: 407.2 hrs≥1hr: 69%
Embark on an interstellar journey with Galaxy Idle Clicker! Conquer galaxies, upgrade your spaceship, and face off against a myriad of enemy ships. With engaging minigames, powerful upgrades, GIC delivers an unparalleled idle space adventure. Join the cosmic conquest today and dominate the universe!
Why similar: Space Sim 54.2%, Arcade 16.9%, Simulation 12.3%, Colorful 10.1%, 2D 6.5%
- #33 Subspace Continuum
73% matchVery Positive88% of 637 reviews2015
Dev: Virgin Interactive EntertainmentPub: Subspace Continuum
Windows
Median: 36 minMean: 43.7 hrs≥1hr: 46%
THE legendary free online multiplayer space shooter! Addictive, fast-paced, easy to learn, and impossible to master.
Why similar: Top-Down 27.6%, Strategy 23.5%, Arcade 22.3%, 2D 13.5%, Action 13.2%
- #34 Naval Battle Online
73% matchMostly Positive76% of 55 reviews2022
Dev: Dark Shine Game Studio
Windows
Are you ready to conquer and plunder the seas with your fleet?
Why similar: Strategy 61.2%, Action 38.8%
- #35 Etherion Online
73% matchMixed51% of 70 reviews2023
Dev: iAppsBeats
Windows · Mac
Gear up! Become a prestige master in weapons or master a skill - join thousands of other players in this massive 2D adventure!
Why similar: MMORPG 46.3% ★, Bullet Hell 19.8%, 2D Platformer 15.3%, Top-Down 8.5%, Colorful 6.1%
- #36 Astro Lords: Oort Cloud
74% matchMixed54% of 69 reviews2016
Dev: Aratog LLCPub: BISBOG SA
Windows
Astro Lords: Oort Cloud is a free-to-play, science-fiction MMORTS combining construction management with click-and-drag Artillery style combat and strategy elements such as exploration, raiding and espionage.
- #37 Stellarion
69% matchVery Positive97% of 79 reviews2025
Dev: Zana Domán
Windows
Upgrade your spaceship and conquer the stars in this thrilling space-mining adventure! Mine asteroids, battle enemies, and trade resources for powerful upgrades to customize your ship. Master the galaxy and embark on the ultimate journey!
Why similar: Bullet Hell 38.8%, Arcade 21.8%, Exploration 15.4%, Colorful 13.6%, Action 10.3%
- #38 ERA ONE
68% matchVery Positive87% of 1,615 reviews2025
Dev: Team Complex LTD
Windows
Median: 4.4 hrsMean: 16.4 hrs≥1hr: 68%
Start with your Command Center and expand it into a colossal modular flagship, module by module. Design custom warships from the ground up, grow a thriving civilization, and command powerful fleets across the Solar System in tactical real-time battles.
Why similar: Real Time Tactics 63.4%, Exploration 19.1%, Strategy 17.5%
- #39 Infinity: Battlescape
71% matchMostly Positive80% of 765 reviews2019
Dev: I-Novae Studios, LLC
Windows
Median: 3.0 hrsMean: 9.8 hrs≥1hr: 71%
Infinity: Battlescape is a multiplayer space combat sim supporting hundreds of players on a single server. Join one of the corporate factions and fight for domination of a seamless, true-to-scale procedural star system. Participate in massive space and planetary battles involving hundreds of ships.
Why similar: Space Sim 67.7%, Simulation 20.4%, Action 11.9%
- #40 Space Wars: Interstellar Empires
71% matchMixed65% of 248 reviews2017
Dev: Desert Owl Games LLCPub: ToHeroes Game Studios LLC
Windows · Mac
Median: 1.3 hrsMean: 17.9 hrs≥1hr: 55%
Helm your own ship, battle for supremacy in a multi-faction war, and conquer the cosmos in this science fiction turn-based strategy game. Select from more than 100+ diverse star ships and fight for territory across a 2D hex-based grid.
Why similar: Strategy 100%
- #41 Endless Sky
69% matchVery Positive92% of 7,114 reviews2015
Dev: Michael Zahniser
Windows · Mac · Linux
Median: 1.0 hrsMean: 13.7 hrs≥1hr: 50%
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
Why similar: Space Sim 45.2%, Simulation 12.8%, Exploration 10.2%, Top-Down 7.7%, 2D 7.7%
- #42 Battle Dawn 2: Terra Reborn
70% matchMixed48% of 52 reviews2022
Dev: Zero Games StudiosPub: Gato Games
Windows
Place your colony, find an alliance of like-minded players and triumph over thousands of other players to conquer the world through strategy, tactics, diplomacy and skill in the biggest social-interaction based MMO of all time. Upgrade your colony, collect items for your Avatar and become a legend!
Why similar: Real Time Tactics 46.6%, Top-Down 28.3%, Strategy 25.1%
- #43 ThreadSpace: Hyperbol
72% matchMostly Positive74% of 50 reviews2007
Dev: Iocaine Studios
Windows
Median: 6 minMean: 4.2 hrs≥1hr: 27%
ThreadSpace: Hyperbol is an action-strategy game set in the distant future. Players battle each other on roads in space as they pilot massive ships capable of firing a wide variety of weapons. Create defenses, coordinate with your team, and launch an assault against your opponents to achieve victory!
Why similar: Strategy 62.6%, Action 37.4%
- #44 Microsoft Allegiance
70% matchMostly Positive79% of 188 reviews2017
Dev: Microsoft Game StudiosPub: ZapHop Games
Windows
Median: 54 minMean: 10.6 hrs≥1hr: 47%
Allegiance is a team-based multiplayer space combat sim that seamlessly combines first-person space combat with a top-down-view perspective, real time strategy, and real time tactics. Team commanders build bases, research technology, and coordinate players to execute a wide range of strategies.
Why similar: Space Sim 51.1%, Real Time Tactics 33.8%, Strategy 9.1%, Action 5.9%
- #45 Avorion
66% matchVery Positive90% of 14,588 reviews2020
Dev: Boxelware
Windows · Mac · Linux
Median: 18.9 hrsMean: 99.6 hrs≥1hr: 90%
A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.
Why similar: Space Sim 71.2%, Exploration 16.1%, Simulation 12.7%
- #46 Out of Orbit
67% matchVery Positive79% of 179 reviews2023
Dev: Case Yellow Labs
Windows
Design, build, or pirate spaceships. Build bases on planets. Explore endless randomly generated universes, travel through black holes, command your crew, survive cosmic events, collect and trade materials, battle epic bosses, and much more. The sky is the limit, literally!
Why similar: Strategy 29.9%, Exploration 26.7%, Adventure 16.8%, 2D 15%, Action 11.6%
- #47 Outlive 25
64% matchVery Positive94% of 290 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: Space Sim 81.8%, Strategy 18.2%
- #48 Star Command Galaxies
67% matchMixed42% of 517 reviews2024
Dev: Warballoon
Windows · Mac
Take command in the ultimate starship simulator: Star Command Galaxies. Become a Captain, recruit your crew, customize and upgrade your starship, battle alien vessels, teleport to away missions and repel boarding invaders in this real-time strategy simulation adventure from indie studio Warballoon.
Why similar: Space Sim 37.3%, Real Time Tactics 26.3%, Action-Adventure 9.2%, Strategy 8.5%, Simulation 6.8%
- #49 Project Amalthea: Battlegrounds
68% matchMixed58% of 75 reviews2020
Dev: RunServer
Windows · Mac · Linux
There is a quarantine declared throughout the orbit so all the pilots are grounded except for the few ones allowed to participate in training battles. Join their ranks for blazing fast space battles with another players in this top-down shooter game
Why similar: Top-Down 67.9%, Action 32.1%
- #50 Space Commander: War and Trade
67% matchMixed68% of 702 reviews2020
Dev: Home Net Games
Windows · Mac · Linux
Median: 1.2 hrsMean: 9.1 hrs≥1hr: 55%
Fight, explore the stars, trade, and lead your fleet across the galaxySpace Commander: War and Trade is an ultimate single player space-sim featuring spectacular graphics, intuitive combat and deep mechanics.
Why similar: Space Sim 72.4%, Exploration 16.2%, Action 11.4%
- #51 Planet S
63% matchVery Positive92% of 2,897 reviews2023
Dev: Glimmerlight Games
Windows · Linux
Planet S is a real-time strategy game where your goal is to colonize multiple planets in a solar system to advance your civilization, build a city and supply it to grow your faction.
Why similar: Real Time Tactics 60.5%, Strategy 32%, Simulation 7.4%