I'd give 4 or 5 stars if it was complete. However, it does "obey" the rules of the game, and that's saying something. So many copycat apps try to improve on the original. That's fine, but call it something different. Yahtzeesharp is very true to the original rules, however, that brings me to the reason for a "so-so" rating. If you get an additional Yahtzee during a game, the Yahtzee Bonus doesn't work. Not at all. Not even one bit after a click. Am I missing something? Do I have to enable that feature somewhere? That just occurred to me, so maybe I need to check a .rc file because there's not a "settings" option anywhere now is there...