The classic strategy duel. Place stones on a 15×15 board and be the first to line up five in a row — horizontal, vertical, or diagonal. Take on a threat-hunting CPU or challenge a friend, all right in your browser.
How to play: Click or tap any empty intersection to drop a stone. Black moves first. Make five of your stones in an unbroken row — in any direction — to win. In vs CPU mode you play Black; the machine replies as White.