TIC-TAC-TOE

How to play

Tic-tac-toe is a battle of X's and O's on a 3×3 grid. You're X and always move first — tap or click any empty square to place your mark, then the computer answers as O after a short pause. Line up three of your marks in a row, column, or diagonal before the CPU does to win; if every square fills first, it's a draw. Pick Easy for a forgiving opponent, Medium for a solid challenge, or Hard for a perfect, unbeatable AI. Your record is saved automatically.