If you’re an expert at playing tic-tac-toe (or noughts and crosses, Xs and Os), then you’ll love this game for your Android device. It’s one of the most famous logic games in history, played by millions of people around the world. And it’s free to play!

Tic-tac-toe (or noughts and crosses, Xs and Os) is a game for two players, X and O. They take turns marking the spaces in a 3×3 grid. The first player is you, and the second player is your Android device. There are four difficulty levels in this game, from easy to very hard.

There is one way to win for each level, and it’s very simple: Find three of your marks in a row.

If you find three of your marks in a row, you win.