The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Khagesh Patel:
Tic-tac-toe is a pencil-and-paper game which now available in iOS. This game is for two players, X and O, who take turns marking the spaces in a 33 grid. The player who succeeds in placing three respective marks in a horizontal, vertical, or diagonal row wins the game.Single Player: Play against iOS with three difficulty levels. Two Player: Two player can play using this mode. Network Play: Play with game center friend.All scores have been stored in game center. You can any time see your and other player's score in game center.