Chalk Tic Tac Toe Classic Free (pl.mr03.tictactoe) on Google Play
Classic Tic Tac Toe game with intelligent AI which adjusts difficulty level to the player. Besides that it has 2 player mode to play with a friend and you can chose the size of board! This game is better than others because it has nice and neat design, animations and intelligent AI so don't wait and check it out! Supports tablets!