Together with a friend entre the battlefield with multi-coloured pens. Play this game by marking in turn down or across with a colour. Do not mark diagonally. Each player plays with their own colour. Continue alternating between your friends until any one can complete a square by adding the last line to a square. Claim this square by marking an letter or number in the square, this player will continue to claim more squares or make a single mark. The player with the most claimed squares wins the game. Have loads of fun.