Originally, it's a game for two players, X and O, who take turns marking the spaces in a 3×3 grid. The player who manages to place three of their marks in a horizontal, vertical or diagonal row is the winner.

3 To 9 - Tic Tac Toe extension, is a variation, an adaptation of the original game, in which the initial 3x3 grid increases to 9x9, winning the user with the most points. When a grid is completed, the game continues to build up to 9x9, allowing you to enjoy Tic Tac Toe for longer.

To better understand this game, it is like an original Tic Tac Toe, but longer.

For Wear OS, the original version of Tic Tac Toe 3x3