Galactic Civilizations II: Twilight of the Arnor includes a massive payload of new content and features requested by the series' devout fanbase. In addition to a new campaign that ties up the Dread Lords saga, Twilight of the Arnor adds civilization-specific technology trees and planetary improvements that add even more flavor to each alien race, while greatly expanding the strategic depth of the game. A vast array of new ships, weapons, starbases and ship components will be available to players, including the devastating Terror Star, which can annihilate entire star systems.