At first I had fun premium currency seemed abundant and I could make decent progression. Now it's obvious the power creep is huge at later levels making the game extremely unfair and unbalanced and the premium currency is barely enough to get any sort of power upgrades. Levels start taking way to long 30-45 minutes per challenge or regular level is ridiculous. Don't get me started on the fact balls will randomly dissapear mid play and devs call it a feature rathef than a bug.