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.

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

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!

After a tenuous peace between the four races of Broccion, the world is at war again, seeking leadership. Players take up arms for their guild and for their nation to battle for land, resources, and victory.

Orake Classic is an old school, 2D tile-based ORPG featuring a variety of skills, monsters, bosses, quests, and extensive lands to explore.

Destiny of Ancient Kingdoms (DOAK) is a free, action MMORPG based on the legends of Norse Mythology. An epic story-line, action-packed combat and classic multiplayer roleplaying elements await strong warriors who are courageous enough to enter the New World! 

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.

Battle For Embolia is a fast-paced indie MMORPG with responsive combat, meaningful progression, and constant updates. Explore a growing world, face challenging bosses, and help shape the game’s development through community feedback. Free to play with no pay-to-win.

Prepare yourself as you step into a world writhing in chaos. Warlords Awakening, a remastered MMORPG that will place you on a journey to become an Elite Lord with an action packed story and ominous monsters around every corner. Explore and conquer the world of Epheia together with the cute and dashing pets to choose from.

Scion of Fate Online, one of the top MMORPG game in the history, now available on Steam.

Atlantica Global is a free-to-play (F2P) massive multiplayer online role-playing game (MMORPG), with a tactical combat system. Venture out in to the world of Atlantis where you'll find otherworldly monsters, amazing gear, and even more battle-hardened adventurers like yourself.