Urban Galaxy is a browser based (HTML5) 3D MMORPG currently under development by Bubblebean.
City of Steam is a browser-based, steampunk Fantasy MMORPG by Mechanist Games
Dark Orbit is a free-to-play browser MMORPG in which the player takes control of a space ship and battle for supremacy and resources.
Assemble an army amidst war between the splintered factions of the Galactic Union in this Sci-Fi strategy game.
If you like playing Lego, Roblox is the perfect game for you. Roblox is a mixture between a mini-game site and a social networking in which players can build and explore Lego-like worlds while enjoying the company of other players.
Exoplanet War is a new browser based MMORTS game set in a distant universe where science fiction is reality.
Empire Universe II is a browser-based sci-fi MMORPG where you can chose your own path in the galaxy.
Stardrift Empires is a free to play, browser-based, Sci-Fi MMORPG game published and developed by SyFy Games.
DarkOrbit Reloaded is an epic space action MMO that boasts a refined new look, an immersive sci-fi narrative and important reworks.