EVE Online - Player-created empires, player-driven markets, and endless ways to embark on your personal sci-fi adventure.
Pioneer - Pioneer is a space adventure game set in the Milky Way galaxy at the turn of the 31st century.
Star Conflict - Star Conflict is a free MMO action game and space simulator that was introduced in 2012.
Vega Strike - Vega Strike is an Open Source 3D Action-Space-Sim that lets you trade, fight, and explore in a vast...
Star Trek Online - Star Trek Online (STO) is a free to play MMORPG that takes place inside the Star Trek world.
X - It is a science fiction space trading and combat simulator series.