I find this game user friendly. The graphics and sound feedbacks are adequate. I tried several other gin rummy games and think this one has the most pleasant balance of card dealing speed and ad frequency. However, there’s this bug that really bugs me. Every 10 games or so, it happens that my opponent knocks after I draw a card. It would be ok if the system ignores the extra card I have. But it doesn’t! Imagine you have only 2 points and you draw a K, only to find that the opponent has just knocked at the same time, say with a total of 8 points. So instead of an undercut plus +6 (+31 points), you now are -6 in this round. That’s a 37 points difference! Not only that, if you quickly discard the extra card (K in this example) which doesn’t belong to you in the first place, you will be punished by a second count. Depends on the cards you have, the opponent’s card might lay-off and more points will be deducted further from you. You would end up losing a game. This happens too frequently as I play faster and faster, and it is getting too frustrating!!