Locke's backgammon set. Travel backgammon set belonging to Locke and seen in Part Two of the pilot episode, when Locke teaches Walt the rules of the game on the beach. Locke describes backgammon as a better game than checkers and that the game is over 5,000 years old, referring to the Mesopotamian royal game of Ur. Locke says to Walt, "There are two players. One side is light, and one side is dark," an ominous foreboding of one of the show's main themes.