Rise and Fall is based in the first millennium BC, and features four playable civilizations: Persia, Greece, Egypt, and Rome. The game includes over eighty civilization-unique military units, as well as eight "hero" units—of which only one may be purchased during a game. In Rise and Fall, there are two campaigns: one follows the conquests of Alexander the Great; and the other, the fictional liberation of Egypt by Cleopatra. Source: Wikipedia, "Rise and Fall: Civilizations at War", available under the CC-BY-SA License.