GURPS Egypt (GURPS: Generic Universal Role Playing System)

When Greek historians first declared the Pyramids to be one of the Seven Wonders of the World, they had already been ancient for almost 3,000 years. The nameless Pharaoh confronted by Moses before the Exodus of the Hebrews from Egypt was only one out of an unbroken string of 200 "living gods" in that country. Tutankhamun, Cleopatra, Rameses, mummies, evil priests of Set: the names have resonated in the Western world for five millennia.
There's a lot of adventure to be found in 5,000 years . . .