This application is a version of the classic game ‘Connect 4’, where the objective is to line up 4 coins of the same color horizontally, vertically, or diagonally on a 6×7 cell board. The game is designed for two players, who compete against each other, with one controlling red coins and the other yellow coins. To place a coin in one of the 7 columns, the player focuses their gaze on the cell where they want to place the coin, while each possible position flickers following the shifted-version of the sequence associated to its command.