The actual rules of the game is not followed by this app. The heart cards are suddenly able to be led when the queen of spades is placed down? Not correct. Also, the one with the highest number card takes the stack. This app doesn't care and makes you take the stack anyway. I had a two of diamonds and some put down a ten of diamonds but I still took the stack because the queen of spades was placed down. Again, not correct. Finally, there were times where you would select you card to place down but it doesn't move even if you tap it several times. Basically, the rules of the game needs to be corrected and the selecting bug really needs to be fix before this app will be considered a good to play.