Technology is researched during the game, unlocking planetary improvements, ships and bonuses. Twilight of the Arnor Technology is quite different depending on your starting race or custom technology tree. In Dark Avatar and Dread Lords, Technology is divided into different categories: diplomatic, propulsion, engineering, weapon, and defense.
Yeah, this could use a description. For the purpose of keeping the techtree neat, this section has been split into the three branches off of Xeno Engineering.
Note: \ Weapons are a necessity, whether you like them or not. The galaxy is a harsh place, not to mention the spiffy effects that these weapons produce. BANG!