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.
History of games
The Tafl games were a family of ancient Germanic and Celtic board games played across much of Northern Europe from earlier than 400 CE until the 12th century. Although the rules of the games were never explicitly recorded, it seems to have been a game with uneven forces (2:1 ratio) and the goal of one side was to escape to the side of the board with a King while the other side's goal was to capture him. Tafl was spread by the Vikings throughout northern Europe, including Iceland, Britain, Ireland, and Lapland.