2K Games has unveiled an MMO version of Civilization. According to its description, Civilization Online promises to be a unique new MMO in which players work together to build a civilization from the stone age to the space age. Players will be able to create their custom avatar and then choose which role they will play in the expansion of their empire. Civilization Online will be powered by CryEngine 3, and you can view its debut trailer – as well as some screenshots – below. Enjoy!