Tic Tac Toe description

Tic Tac Toe (also known as Noughts and crosses or Xs and Os) is a paper-and-pencil game for two players, X and O, who take turns marking the spaces in a 3×3 grid. The player who succeeds in placing three of their marks in a horizontal, vertical, or diagonal row wins the game. In this version of the Tic Tac Toe game, you can play against your friends or play against the computer with different levels of difficulties.