Greatatlantic
Erudite
Just wrote this thing up last night. Go here to readthe full thing. Critiques are welcome.
Galactic Civilizations II begins by holding true to its name. You can pick one of several pre-fabricated civilizations, from the familiar and diplomatic Terran Alliance (humans), to the obligatory ugly, militaristic expansionists (Drengins). Just in case neither of those appeal to you, you can create your own Civilization by picking bonuses in several categories such as Defense or Research. Each civilization will then try to control the map using the advantages, and its not all military. Its more then possible to use your Civilization's culture to get planets to defect to yourside. Get enough of the galaxy under your control and you win a culture victory. There is also an ultimate technology which by researching wins you the game, though it takes a LONG time to do so. Another method is to form an alliance with every remaining civilization. Obviously, you can always just wipe out your opponents the old fashion way if thats what you want, but it is worth it to note all of these victory conditions are achievable and persuing them offers you a different gameplay experience.