Four-in-a-Row, also is popular as Connect Four and Four in a Line is a two-player, connection game. Players first choose a color, minimal win length (4, 5, or 6), and points to win (up to 8).

After this they then take turns dropping a disc of their color into a six-by-seven, vertically-suspended grid. The games continues until some of the players reaches the victory or till the board must be reset. The goal of the game is to be the first to make a four checkers horizontally, vertically, or diagonally.