The gameplay isn't too bad, but what kills it for me are the number of ads you are forced to watch. You can't do anything unless you watch a 35 second ad (30 secs for the initial ad and another 5 second splash screen before you can close it), even pausing the game forces you to watch a 10 second ad. I would be fine watching a 30 second ad every 2-3 games or every 20 minutes.