Top similar games like EVE Online:

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.

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.

Albion Online is a fantasy sandbox MMORPG featuring a player-driven economy, classless combat system, and intense PvP battles. Explore a vast open world full of danger and opportunity. Grow your wealth, forge alliances, and leave your mark on the world of Albion.

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!

Stake your claim, command your fleets, and wage epic war in space.

Play ArcheAge - A vast open-world sandbox MMORPG with everything you can possibly imagine.

Critically acclaimed and now Free to Play, WildStar is a fantastical sci-fi MMO where you can join your friends or undertake your own epic adventures on the fabled planet Nexus!

Enter a unique science fantasy MMORPG and dive into a unique organic living world !

Take control of your own starship in a cutthroat galaxy. Elite Dangerous is the definitive massively multiplayer space epic.

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.

STAR WARS™: The Old Republic™ is a free-to-play MMORPG that puts you at the center of your own story-driven saga. Play as a Jedi, Sith, Bounty Hunter, or one of many other iconic STAR WARS roles in the galaxy far, far away over three thousand years before the classic films.

Age of Ascent: Arrival is a new space co-op and combat game featuring direct-piloting solo and co-op missions and real-time PvE and PvP battles set in stunning space scenes.

A unique space strategy game where thousands of players participate in one shared galaxy.

It is the year 2938. The long wished-for encounter of the X Universe and the Earth holds both joy and sorrow for the people. Despite flourishing trade, the clash of the diverse races, cultures and life forms creates new tensions, mistrust and open conflict that need to be overcome!

The Repopulation is a Massively Multiplayer Online Role Playing Game in a science fiction setting built heavily upon social aspects, sandbox driven gameplay and in depth crafting systems. CURRENTLY IN ALPHA BUILDS.

Command and customize your own capital ships. Take down opponents in thundering, team-based combat. Dreadnought is a free-to-play shooter that puts you at the center of spaceship battles on a colossal scale.

STEP INTO A LIMITLESS UNIVERSE Touchdown in the World of Twelve and set off on a great adventure in WAKFU - an original massively multiplayer online role playing universe where humor goes hand in hand with action-packed, tactical battles.

In Prosperous Universe start your galactic empire by trading on the real-time market exchange with other real players. Build your 1st base from humble beginnings & watch as your business flourishes with complex supply chain strategies. Economics, politics & realism fuel this immersive business MMO.

CSC is a casual space MMO with fast-paced combat, a robust player economy, and an uncapped crafting system. CSC is a game in active development.

Celestra is a text-based online RPG in which you’ll play one of the crew on a sci-fi ship exploring the galaxy and trying to save their home. Choose from one of seven departments and raise your skills as you embark on missions throughout the cosmos.

SHROUD OF THE AVATAR: FORSAKEN VIRTUES is a multiplayer fantasy RPG that sets the player on a path filled with peril and tough choices as they explore a persistent realm that can be shared with other Avatars. It is the spiritual successor to Richard Garriott’s Ultima games.

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!

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.

Discover endless expanses and hardcore PvP! Become a hero of a fantastic world in AION: charge into thrilling combat, on ground or in the air, battle against other players or in the fight against some mighty monsters. Spread your wings, Daeva, and fight for the fate of your people!

Starship Empire is an intense PvP-filled space MMO where you not only lead your ship into epic battles, but manage the entire crew inside!

Anarchy Online – the first ever science fiction MMO – is now on Steam! Compete and cooperate with thousands of player simultaneously on a vast, alien world. Join humanity nearly 30,000 years in the future in a world of perpetual conflict and scientific marvel.

Stash is an MMO with turn based grid combat, custom housing, a tabletop art style, and more loot than you can fit in a portable hole. Stash has the charm of a pen-and-paper gaming group with the gameplay of a deep, interesting, unique RPG. Join our friendly community!

The Great Battle between Karus and El Morad has arrived to Steam! Pledge allegiance to one of the Nations and put your skills to the test in one of the best PvP system in the MMORPG universe!

PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.

Build anything. Fight anyone. In space. Highly tactical competitive sci-fi combat/building multiplayer free-to-play game. Bit of MOBA, bit of sandbox. Try it out to see for yourself!

8BitMMO is a retro-style 2D massively multiplayer game! It's a giant construction sandbox -- you can build a home or a castle in a persistent streaming world. Found and manage your own city. Fight evil LawyerCats and engage in Player vs Player battle.

RuneScape is a high fantasy open world MMORPG. Explore an ever changing and evolving living world where new challenges, skills, and quests await. Featuring unprecedented player freedom, you choose how to play, adventure, and grow.

Perpetuum is a persistent, sandbox, single server, massively multiplayer sci-fi rpg (MMORPG). Control huge robots and mechs to gain access to an alien planet's resources and knowledge, amass huge wealth, or even claim part of the world for yourself using terraforming and complex infrastructure.

Dive into a world of epic adventure! Create your perfect hero thanks to a uniquely customizable class system. Collect, craft, and customize your gear. Go it alone or group up to challenge dungeons, raids, dynamic open-world content, and your fellow players.