Star Trek Online

Star Trek Online is a premium free-to-play MMORPG from Cryptic Studios and Perfect World Entertainment, set in the famous Star Trek universe. Don the official uniforms of the United Federation of Planets or the Klingon Empire, choose a tactical, scientific or technical specialization, command away teams, captain your own starship, prevent assimilation by the Borg and even breed tribbles - all in Gene Roddenberry's larger-than-life space epic - and all for free.