Take the world’s best-loved game to new heights! This award-winning game for two players is just like classic tic-tac-toe, except you can stack the 66 durable plastic pieces on the game board for a three-dimensional challenge! Try to get four Xs or Os in a row horizontally, vertically, or diagonally. Game variations are included: Use blocker pieces to foil your opponent, or younger kids can play a 3 x 3 version. For more than 30 years, Melissa & Doug has created beautifully designed imagination- and creativity-sparking products that NBC News called “the gold standard in early childhood play.” We design every toy to the highest quality standards, and to nurture minds and hearts. If your child is not inspired, give us a call and we'll make it right. Our phone number is on every product!