A free app for Android, by Opense.

Tic Tac Toe is a classic board game, and the best version of this game is now available on your Android device. This game is very simple and easy to play, and the rules are very simple. It is played on a grid that is divided into nine boxes, and it is played by two players. One player has to place three consecutive marks in a horizontal, vertical, or diagonal row in order to win the game. This can be done in one of the nine boxes, in any direction. The other player has to try to stop the player who has made the three consecutive marks in a row.