Concentrating on the late medieval period, Age of Chivalry: Hegemony replaces or significantly alters each of the civilizations in the original game, while adding a number of new ones, allowing the player to control Central and Western European states. Many new units and technologies have been added and gameplay dynamics have been changed considerably in this complete overhaul of Age of Empires II.
Good quality of models, nice ideas about the new civilizations, interesting way of use the technologies, it makes the gameplay change completely.
I put 9/10 because well I don´t see very attractive the naval battles, there are few units and some are useless, but the rest is cool. :)