You are X. Click a cell or use arrow keys + Enter.
The classic duel of X versus O — line up three in a row to win. Play a friend on one device, or take on the computer.
💡 Grab the centre early — it sits on four winning lines, more than any corner or edge. Against Hard, a careful draw is the best you can force.
📜 Did you know? Noughts & crosses became OXO, one of the first video games, built in 1952 on Cambridge's EDSAC computer — you picked squares with a rotary telephone dial.