Used to love this game, but the money-grabbing features and ads are too much. Nonexistent customer support and the Supercell authentication emails do not work. Extremely frustrating perfect/perfect+ system with no early/late hit feedback. If you want a good game like this, try Arcaea or Pianista. Whatever you do, don't spend money on this, as progress and purchases are non-transferable between devices since the Supercell ID authentication system is broken.