Tic Tac Toe 3x3 5x5 7x7

This app implements traditional Tic Tac Toe with some improvements. The traditional tic-tac-toe game consists of a 3x3 board, always played by 2 players, where at each turn, the player must fill one of the spaces on the board with its symbol: circle or X. The filling always switches to a filled place for each player and you cannot fill in the boxes already filled. When one of the players makes a vertical, horizontal, or diagonal row with his symbol, that player wins. It is possible to play against the cell phone or with another person, always using the same device. When playing with the cell phone, it is possible to choose 3 levels of difficulties: easy, medium and difficult. To increase the tic-tac-toe, it is also possible to choose different boards: 5x5 or 7x7. In this case, it is necessary to make a row with 4 symbols (horizontal, vertical or diagonal). I hope you have fun with this game.