The second, and last, expansion pack to Galactic Civilizations has been released!

The new expansion pack, Twilight of the Arnor, adds hundreds of new features, gives each civilization a unique technology tree, a unique set of planetary improvements, star base modules, ship parts, and more. 

Moreover, with Twilight of the Arnor, Stardock went back and revamped the graphics for the game to bring them up to the state of the art.  A new sound track has also been added along with updates to the computer AI.  It also reintroduces the Terror Star, the ultimate weapon last seen in the original Galactic Civilizations as well as a new victory condition called Ascension. Online tournaments have also been added to allow people to compete at playing the same map and scenario and submit their scores to the GalCiv metaverse.

Link: Twilight of the Arnor