Play Tic Tac Toe Free on your Android phone for free! The best modern design for Tic Tac Toe game. For every taste and age. This game has a great AI in three levels of difficulty. Use Tic Tac Toe Free to relax and fun. Features: 3 x 3 table. 3 difficulty level: easy, medium, hard. Play against your friend or CPU. Choose your favorite sign X or O.