Okay, this game has virtually no flaws that I can think of. I would like to request the addition of the Aztecs, a major power who beat the Spaniards with spears and sheer numbers (although they died of disease), Canada, a major medical superpower, Germania, ancestors of Germany who fended off the Roman Empire at its hieght, Sparta, technically Greece except that they fended off the massive Persian Empire, and Israel, under the leadership of David, they were able to defeat the Assyrians but ultimately fell to the Babylonians and then the Romans and then gained independence. Mesopotamia and Macedonia would be good too. Also, perhaps you could add alliances and peace treaties in game, so multiple empires could win at once? Thatd be cool.
Amazinglizard4 about Rapture - World Conquest, v1.2.6