Tic Tac Toe is a simple strategy game played on a square board made up of 3x3 cells. Two players participate in it, and each player takes it in turn to place a “red” or “blue” circle in one of the empty cells in each turn. The goal is to make a chain of three consecutive marks (horizontal, vertical or diagonal) before the other player. If the board is full without one player achieving this goal, it is declared a draw. Tic-tac-toe is an easy and popular game, often played in schools and among friends.