The Star Trek Roleplaying Game is a role-playing game based on the Star Trek universe using the CODA System rules. This version of the game was created by Decipher, Inc. in 2002. When Decipher acquired the rights to create the RPG, they also acquired most of the gaming studio from Last Unicorn Games. However, the Decipher game system is dissimilar to the one that Last Unicorn published. Instead, the system is similar to Wizards of the Coast's d20 System but uses 2D6 to resolve actions.
Eight book were published and several more were planned, including books based on Klingons, diplomats, and traders. Decipher was forced to close down their RPG studio before those books were published, so although they were written a couple years ago those books haven't been released. On November 12, 2007, Decipher CEO Warren Holland confirmed that the company would no longer be releasing any material concerning the Star Trek RPG.
Source: Wikipedia, "Star_Trek_(role-playing_game)", available under the CC-BY-SA License.