c4 - Connect Four

Drop red and blue discs in turn and be the first to line up four. c4 is the classic Connect Four built with JavaScript and Canvas, played on a grid where rows, columns and diagonals all count. Every move is a small read of your opponent, and blocking a row of three is half the game. Face the built-in artificial intelligence, pass a device back and forth with a friend offline, or find an opponent online. The rules take a minute to learn and a round lasts a few minutes, all in your browser.