Go (game)
Go is an abstract strategy board game for two players, in which the aim is to surround more territory than the opponent. The game was invented in China more than 2,500 years ago and is believed to be the oldest board game continuously played to the present day. 
A 2016 survey by the International Go Federation's 75 member nations found that there are over 46 million people worldwide who know how to play Go and over 20 million current players, the majority of whom live in East Asia.
Backgammon
Touraj Daryaee (2006)—on the subject of the first written mention of early precursors of backgammon—writes:
In the 11th century "Shahnameh", the Persian poet Ferdowsi credits Burzoe with the invention of the tables game "nard" in the 6th century. He describes an encounter between Burzoe and a Raja visiting from India. The Raja introduces the game of chess, and Burzoe demonstrates "nard", played with dice made from ivory and teak. Today, Nard is the name for the Persian version of backgammon, which has different initial positions and objectives. H. J. R. Murray details many versions of backgammon; modern Nard is noted there as being the same as backgammon and maybe dating back to 300–500 AD in the Babylonian Talmud, although others believe the Talmud references the Greek race game Kubeia.