This app is for fun and treated as a great mental excercise. If you are alone and have nothing to do, this is a great mental excercise. You can play Tic-Tac-Toe for free. This app doesn't need active internet - so when getting bored, just hook up to play Tic-Tac-Toe and exercise your brain a bit. A great stress buster and fun activity for kids too. No special skills required. An old paper and pen game is now on your mobile. Have Fun !