It's just a simple Tic Tac Toe 1. The game is played on a grid that's 3 squares by 3 squares. 2. You are X, your friend is O. Players take turns putting their marks in empty squares. 3. The first player to get 3 of her marks in a row (up, down, across, or diagonally) is the winner. 4. When all 9 squares are full, the game is a draw.
