A free program for Android, by V Solutions.

Tic Tac Toe – Classic XO is an entertaining and classic puzzle game for both mobiles and tablets. It is designed to offer both an XO and an OO gameplay.

The gameplay is very simple. You will be given a grid of nine squares. You will take turns to place an X or an O in one of the squares. Once you have placed an X or an O in a square, you will take another turn. You will continue to do this until you have placed an X or an O in every square. The winner will be the first player to get three of the same symbols in a row.

You will be given two game modes. The first mode is the easy mode, and the second is the hard mode.