If you are a tic tac toe game lover, then you will absolutely LOVE this book. Tic-tac-toe (American English), noughts and crosses (British English), 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 is the winner. Suitable for kids and adults. Fun tic tac toe activity book.