The classic game TAC TOE IO enters a new level and offers you many options to have fun. Players are offered several game modes: online, two players, solitary against AI. In all the above modes, you can choose the size of the field from the minimum- by nine cells, to the maximum- by four hundred and forty-one cell. On the minimum field, you must form three of your symbols in a row, and five on the rest. A player who will be the first to build a row horizontally, vertical or diagonal will become a winner in Tic Tac Toe IO.