Tic Tac Toe is the most classical game which is know by almost anyone and is played by almost anyone. Ultimate Tic Tac Toe brings variety to this classic game. Number of grids can not only be defined as 3 but also 5 and 7. In games which grid numbers are 5 and 7, you must do four matches instead of three matches. PC, mobile device, tablet being in the first place, you can play the game in any platform you want.