If you're not familiar with the ancient game of Senet, it's been around for over five thousand years and is arguably the original "gateway" game. Read more about it here.
Also, on discoveringegypt.com, learn more about the "Ancient Egyptian Game of Senet" here.
Finally, on eurogamer.net, an odder view on Senet where they ask the question, "Why did ancient Egypt spend 3000 years playing a game nobody else liked?" Find out more here.