Tic Tac Toe needs no introduction — it's one of the first strategy games most people ever learn. This version pits you, playing X, against a computer opponent playing O, on the familiar 3x3 grid. Click any open square to place your mark, and the AI responds with a move of its own. The first player to line up three marks in a row, column, or diagonal wins; if the board fills up with no winner, it's a draw. Despite its simplicity, a single well-placed opening move can shape the entire outcome of the game.
Tip: Taking the centre square first gives you the most possible winning lines. Watch the board for two-in-a-row opportunities for your opponent and block them early.
Click / tap an empty square to place your mark.
Puzzle