I wholeheartedly agree with all of the positive comments from other reviewers. Undo button is unnecessary. Simply drag the peg backwards if you inadvertently pull your peg or your opponent's peg too far. Still, to that point, I love the suggestion to use tracks 1 and 3 if only 2 players. It would make it both easier to see the pegs and less likely to pull the opponent's. Only negative, unless I'm missing it, is skunking opponent only nets you one victory in the scoreboard, not two.