Don't know what's happened, but suddenly the game won't start. The loading bar gets nearly full, and the game closes itself. Would normally rate at about 3 stars because events have made it harder to get the event currency which means its harder to get specialty dragons. The game seems generous with gems, giving 5 or more at a time but you only actually get 1 or 2. Some dragons are ridiculously difficult to breed, + the dragons level progression designs have gone downhill since the app was sold.