Hex is a strategy board game played on a hexagonal grid, theoretically of any size and several possible shapes, that belongs to the general category of "connection" games.

The game was invented by the Danish mathematician Piet Hein, who introduced it in 1942 at the Niels Bohr Institute. It was independently re-invented in 1947 by the mathematician John Nash at Princeton University. It became known in Denmark under the name Polygon (though Hein called it CON-TAC-TIX); Nash's fellow players at first called the game Nash. According to Martin Gardner, some of the Princeton University students also referred to the game as John (according to some sources this was because they played the game using the mosaic of the bathroom floor). However, according to Sylvia Nasar's biography of John Forbes Nash A Beautiful Mind, the game was referred to as "Nash" or "John" after its apparent creator. John Nash was said to have thought of this game, independent of Hein's, during his graduate years at Princeton. In 1952 Parker Brothers marketed a version. They called their version "Hex" and the name stuck.
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This faithful version of the game allows you to play in 1 or 2 players, change the grid size of the game, the color of the pieces, and to train against an artificial intelligence