The Nile flood, where the Japanese characters are rendered by Google translate as "Jakkarubajon the top of the world's first board game Seneto." Googling Seneto yields only one relevant hit (and I can't find a translator for the Esperanto there).
This appears to be carved out of ivory. I wonder if it is Pharaonic in origin.
Addendum: A hat tip to Kabbu, who knew about Senet, a pre-dynastic Egyptian game.