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.
Board wargame
The beginning of the commercial board wargaming hobby is generally tied to the name "Avalon Hill" and the publication of "Tactics II" in 1958, along with "Gettysburg", the first board game designed to simulate a historical battle.