Tic-Tac-Toe

Pick a board size: 3×3, 6×6, or 9×9. First to align the target number of marks wins.

Configure room

Your name

Board size

3×36×69×9

How to assign sides

I'll pick my sideRandomLet my friend pick

Your side

X (moves first)O

How to play

Players alternate placing X and O on a grid. On 3×3, align three marks to win; on 6×6, at least four; on 9×9, at least five. Lines count horizontally, vertically, or diagonally. Runs longer than the target on the bigger boards still count as a single win. If the board fills with no line, the game is a draw. X always moves first.