Senet is the oldest known board game. Fragmentary boards that could be senet have been found in First Dynasty burials in Egypt, c. 3100 BCE. The first unequivocal painting of this ancient game is from the Third Dynasty tomb of Hesy (c. 2686–2613 BCE). People are depicted playing senet in a painting in the tomb of Rashepes, as well as from other tombs of the Fifth and Sixth Dynasties (c. 2500 BCE). The oldest intact senet boards date to the Middle Kingdom, but graffiti on Fifth and Sixth Dynasty monuments could date as early as the Old Kingdom. Reference: Wikipedia
Below are some examples and price guides of Senet games including a faience board and a group of Ancient Egyptian gaming pieces.