Mesopotamia Birth of Civilization is a free, downloadable board game by Garry Stevens designed to teach the history of the Fertile Crescent. Garry writes:
Mesopotamia follows the rise and fall of twenty nations from the Sumerians to the Persians over two thousand years of history. It purloins freely from those wonderful classic games Civilisation, History of the World, and Ancient Conquests, to which I owe a huge debt. The game is more historical than Civilisation, but less world-encompassing than History of the World (HOTW). The basic system is that of History of the World, but with one very significant difference.
Source: miniaturewargaming.com