Backgammon is a game played by two players. Each player moves pieces around a board. Players roll two dice to find out how far their pieces can move in one turn. The winner of one game is the first to get all pieces all the way around, and off, the board.
The game is laid-out asymmetrically. White's direction of travel is counter-clockwise, whereas black's direction of travel is clockwise. (There is no advantage to either side due to this asymmetry.)