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.
Real-time strategy
In the United Kingdom, the earliest real-time strategy games are "Stonkers" by John Gibson, published in 1983 by Imagine Software for the ZX Spectrum, and "Nether Earth" for ZX Spectrum in 1987. In North America, the oldest game retrospectively classified as real-time strategy by several sources is "The Ancient Art of War" (1984), designed by Evryware's Dave and Barry Murry, followed by "The Ancient Art of War at Sea" in 1987.