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.
List of best-selling game consoles
A handheld game console is a lightweight device with a built-in screen, games controls, speakers, and has greater portability than a standard video game console. It is capable of playing multiple games unlike tabletop and handheld electronic game devices. Tabletop and handheld electronic game devices of the 1970s and 1980s are the precursors of handheld game consoles. Mattel introduced the first handheld electronic game with the 1977 release of "Auto Race". Later, several companies—including Coleco and Milton Bradley—made their own single-game, lightweight tabletop or handheld electronic game devices. The oldest handheld game console with interchangeable cartridges is the Milton Bradley Microvision in 1979. Nintendo is credited with popularizing the handheld console concept with the Game Boy's release in 1989 and continues to dominate the handheld console market.