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

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.

Operation: New Earth
Operation: New Earth is an intense sci-fi multiplayer strategy game in which you must command an advanced military facility to defend Earth from a hostile alien invasion. Create an alliance, gather resources, and unlock advanced technology to level up your stronghold!

Nova Empire
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!
Operation: New Earth is an intense sci-fi multiplayer strategy game in which you must command an advanced military facility to defend Earth from a hostile alien invasion. Create an alliance, gather resources, and unlock advanced technology to level up your stronghold!
Why similar: Strategy 33.3%, Aliens 26.6%, Sci-fi 19.3%, Simulation 14.8%, Multiplayer 6%
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: Base Building 23.2%, Sci-fi 22.2%, PvP 19.7%, PvE 18.3%, Strategy 16.6%
An exceptional sci-fi strategy game based on space adventure as its core.
Why similar: Wargame 24.3%, Sci-fi 22.7%, PvP 16.8%, Strategy 16.1%, PvE 12%
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: Base Building 25.8%, Aliens 22%, Wargame 19.5%, Sci-fi 17.4%, Strategy 10.9%
The universe is full of Starlings, tiny orange aliens that want to take over the galaxy. Create your own space colony, fight epic battles and discover new planets. Train your soldiers, develop your technology and create unimaginable gadgets. Enjoy this huge social game with friends!
Why similar: Strategy RPG 20.9%, Aliens 19.7%, Wargame 17.3%, Base Building 12.6%, Strategy 8.1%
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!
Second Galaxy is an open world sci-fi game that combines RPG and SLG elements. You can navigate hundreds of different space ships, team up with players to form alliances, and engage in intergalactic battles with other players around the world.
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: Strategy RPG 37.2%, PvP 20.4%, PvE 16.8%, Sci-fi 13.6%, Strategy 12%
Stake your claim, command your fleets, and wage epic war in space.
Why similar: Base Building 28%, PvP 15%, Strategy 14.9%, Sci-fi 14.8%, PvE 13.8%
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: Base Building 48.1%, Aliens 39.1%, Sci-fi 12.1%, Multiplayer 0.7%
Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more.
Why similar: Aliens 28.7%, Grand Strategy 26.7% ★, Sci-fi 12.9%, PvP 11.4%, PvE 10.2%
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: Base Building 30.8%, Sci-fi 27.9%, PvE 26.4%, Strategy 14.9%
Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!
Why similar: Cinematic 17.6%, Wargame 16.5%, Sci-fi 12.9%, PvP 10.2%, PvE 9%
In a remote corner of the Milky Way, you, a star hunter, will control a fleet, take on a wide variety of bounty contracts and missions, and venture into the vastness of space. You will hunt for mysterious items for your employers and explore specific targets in uncharted territory.
Why similar: Base Building 39.5%, Strategy 32.9%, Simulation 20.8%, Multiplayer 6.8%
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%
Build Master: MarsVille is a city-building and strategy game that invites you to create your Martian colony with your engineering genius and building skills. Form alliances, trade resources, and conquer rival colonies. Embrace the challenge and become the ultimate Build Master on Mars!
Why similar: Base Building 40.1%, PvP 21.1%, Strategy 16.9%, Simulation 14.9%, Multiplayer 7%
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 100%
Join the battle for EDYN, the ultimate multiplayer strategy game. Build settlements, command armies, and unify the realms in epic PvP warfare to etch your legacy into history. Raid, loot, make alliances, and unite to conquer the planet itself, with no Pay-To-Win mechanics to upset the playing field.
Why similar: Strategy 51.4%, Simulation 48.6%
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 94.5%, Sci-fi 4%, Multiplayer 1.6%
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 43.4% ★, Strategy 16%, Base Building 14.9%, Sci-fi 14.1%, PvP 10.5%
Hunt, capture, and command the monsters of the Monsterverse. Build your base, recruit elite Titan Chasers, and lead squads into tactical turn-based battles. Expand your territory in a shared online world, forge alliances, and face colossal threats like Godzilla, Kong, and Skullcrawlers.
Why similar: Strategy RPG 26.4%, Base Building 23%, PvP 13.1%, Sci-fi 11.7%, PvE 10.7%
This Long Term Strategy Game lets you take control of the armed forces of your nation. Become responsible for its military expansion, technological research and economic development. Form alliances and wage total war for global dominance on the battlefields of World War 3.
Why similar: Diplomacy 27.5% ★, Grand Strategy 24.5% ★, Wargame 19.8%, Base Building 12%, Strategy 10.9%
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: Diplomacy 31.9% ★, Grand Strategy 26.2% ★, Sci-fi 13.3%, PvP 10.6%, Strategy 10.3%
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: Sci-fi 21.7%, Base Building 21%, Strategy 19.8%, PvP 15.3%, PvE 14.7%
Take the role of a newly ascended deity in Gods and Idols. Carve your place among the stars in an open, dynamic, and massive MMORTS universe. Command the powers of the cosmos, form alliances, and use your worshipers as instruments to further your goals.
Why similar: Sci-fi 29.2%, Strategy 19%, Simulation 17.9%, Realistic 15.9%, Multiplayer 10.2%
A unique space strategy game where thousands of players participate in one shared galaxy.
Why similar: Strategy 31.9%, Sci-fi 28.6%, PvP 17%, PvE 15.4%, Multiplayer 7.1%
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%
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: Simulation 38%, Sci-fi 35.2%, PvP 16.5%, PvE 10.3%
Star Trek: Infinite is a grand strategy experience that lets you play your own Star Trek story as the leader of one of four major factions in the galaxy. Follow the specially crafted story or blaze your own trail in the first Star Trek grand strategy game.
Why similar: Diplomacy 39.7% ★, Grand Strategy 31.2% ★, PvP 10%, PvE 9.3%, Strategy 5.9%
Take command of a civilization that has just achieved faster-than-light travel in Galactic Civilizations IV, the newest entry in the award-winning space 4X strategy game series. Explore the galaxy, colonize worlds, shape cultures, make alliances, fight wars and pioneer new technologies.
Why similar: Diplomacy 38.3% ★, Grand Strategy 28.7% ★, Sci-fi 12.4%, Strategy 8.1%, Simulation 8%
Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in 4-player co-op. 🚀
Why similar: Co-op Campaign 40.6% ★, Base Building 21.6%, PvP 13.4%, Sci-fi 10.3%, Strategy 9.6%
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: Diplomacy 33.1% ★, Aliens 15.9%, Base Building 15.9%, PvP 10.1%, Sci-fi 9.6%
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: Diplomacy 48.7% ★, Base Building 27.6%, PvP 12.6%, PvE 11.1%
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: Sci-fi 26.3%, PvP 21.1%, PvE 16.4%, Strategy 15.5%, Simulation 12.4%
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: Strategy 36.3%, Sci-fi 25.3%, PvP 14.4%, Fantasy 11.2%, Combat 8.1%
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: Cinematic 32%, PvP 30.8%, Sci-fi 30.3%, Colorful 6.8%
Andromeda is a hybrid between a space 4X and an MMO for Android and PC. Get dropped into 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.
Why similar: Strategy 37.9%, Sci-fi 23.9%, PvP 13.8%, PvE 13.3%, Simulation 11%
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 38.4%, Sci-fi 15.9%, PvE 15.2%, Simulation 13.8%, Strategy 11.8%
Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!
Why similar: Sci-fi 21.6%, PvP 20.6%, Simulation 18.1%, PvE 18.1%, Strategy 13.6%
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: PvP 37.8%, Sci-fi 32.5%, PvE 17.2%, Combat 12.5%
Downfall MMORPG is an open-world sci-fi & fantasy MMORPG where magic and technology collide. Choose a faction, forge your own playstyle, and fight for control of a living world in massive PvP battles and endless PvE adventures.
Why similar: Sci-fi 33.2%, PvP 18.8%, PvE 15.4%, Fantasy 14.7%, Realistic 11%
Ascent is a PVE sandbox space MMO with 270 BILLION star systems and an emphasis on strong Sci Fi. It encourages Exploration, Colonization, Research, Asteroid mining, Farming, Trading, and Combat. Outside the tutorial sector, everything in-game has been built by players.
Why similar: Simulation 34.1%, Strategy 33.1%, Sci-fi 32.8%
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!
Why similar: Sci-fi 44.2%, Multiplayer 19%, Simulation 18.8%, Strategy 18%
Entropia Universe is a unique massively multiplayer online game (MMO) where virtual assets hold real-world value and players can participate in a thriving virtual sandbox economy.
Why similar: PvP 29.7%, Sci-fi 28.1%, PvE 26.4%, Combat 11.5%, Realistic 4.4%
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.
StarRupture is a first-person open world base-building game with advanced combat and tons of exploration. Play alone or in a group on this sublime and ever-changing planet, extract and manage resources, create your complex industrial system and fight off hordes of alien monsters.
Why similar: Base Building 48.6%, Sci-fi 25.4%, Simulation 15.9%, Multiplayer 10.1%
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: Aliens 52.8%, Base Building 27.5%, Sci-fi 19.7%
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 45.9%, Sci-fi 23.3%, Simulation 15.5%, Strategy 15.3%
Take command of humanity’s last survivors and rebuild an empire in the stars. In this immersive turn-based strategy game, you will have to fight to protect your people, control rival factions, and unlock lost technology.
Why similar: Diplomacy 39% ★, Grand Strategy 21.5% ★, Aliens 17.8%, Sci-fi 11.5%, Strategy 5.1%
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: Diplomacy 37.1% ★, Grand Strategy 21.2% ★, Base Building 15.7%, Sci-fi 9.7%, Strategy 6.4%
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: Base Building 28%, Aliens 27.6%, Sci-fi 15.2%, Strategy 11.4%, Simulation 10.5%
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: Sci-fi 49.3%, Strategy 21.8%, Simulation 17.7%, Multiplayer 11.2%
Isometric. Massively Multiplayer. Capture The Flag. Skirmish. Bug Hunt. And more. Welcome to FreeInfantry - the world's first massive multiplayer online isometric shooter.
Why similar: Aliens 52.1%, Sci-fi 22.1%, PvP 17.9%, Combat 7.9%
In Star Trek Online, the Star Trek universe appears for the first time on a truly massive scale. Players take the captain's chair as they command their own starship and crew. Explore strange new worlds, seek out new life and new civilizations, and boldly go where no one has gone before.
Why similar: Sci-fi 57.1%, PvP 12.9%, PvE 11.8%, Multiplayer 10.4%, Strategy 7.6%