Connect 4

Connect 4 has two versions 1) Play with Android and 2) Play with Friend in which the players plays turn by turn by dropping colored discs from the top into a seven-column, six-row vertically suspended grid. The pieces fall straight down, occupying the next available space within the column. The object of the game is to connect four of one's own discs of the same color next to each other vertically, horizontally, or diagonally before your opponent.