Tic-tac-toe (also known as Noughts and crosses 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 wins the game.
Now you can challenge your friend in Tic Tac Toe in mobile platform. You have to just connect to each other via Bluetooth and start placing your move from your own device.
Very good multiplayer game