A comprehensive backgammon game with many features: A choice of challenging computer opponents, many features & options. Extensive choice of rules including domino backgammon : a new variation that replaces the dice with dominoes and allows players to think ahead instead of relying on the roll of the dice. Now includes seven extra backgammon variations and four backgammon challenges : series of matches against progressively improving computer opponents. The dice are fully traceable to ensure the computer does not cheat.