Tic Tac Toe HTML5 is the most famous strategy game. Enjoy this classic game with the 3x3 scheme and two variant 5x5 and 7x7 where you have to place 4 marks instead of 3. HTML5 Tic Tac Toe, Tic Tac Toe, strategy game, 3x3 Tic Tac Toe, 5x5 Tic Tac Toe, 7x7 Tic Tac Toe, online Tic Tac Toe, board game, classic game, HTML game, responsive design, mobile game, strategy, puzzle, mental game, free online game