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.
This is an absolutely amazing game. the only thing i don't like is that when you play Brandenburg it would be nice if the upgrade path where you get the super strong units there would be units that don't need gold.