You are X. Click on a square, Computer will respond with O. Or else,
Play with a friend
In this version, the computers tries a little bit to win.
There exists another version in which the computer plays entirely at random.
X wins 0 O wins 0
Tic-Tac-Toe is a game of enormous antiquity. As a child, I played it on steamy school bus windows,
and scratched with sticks in the sand of beaches. We learned to take turns, and that the goal is
to be the first to get 3 marks in a row. No one can say whether Euclid played such a game as a child.
He probably wouldn't have bothered writing about it.