High Quality Content by WIKIPEDIA articles! Galactic Civilizations II: Twilight of the Arnor, released April 30, 2008, is the second expansion pack to the turn-based strategy video game Galactic Civilizations II: Dread Lords, following the first expansion pack Galactic Civilizations II: Dark Avatar, released February 2007. It has been affirmed by the developer, Stardock, that this is to be the last expansion.