I absolutely love this game! There have been little to no game flaws that I’ve experienced, and getting even more from a great game is only $1.99, and is a one-time purchase! The game is great, but one problem I have is that other modes require premium. It’s cheap, so this is less of a problem, and more of an inconvenience. The game is quite soothing, and easy to pick up, but is real hard to put down. Also, there are no advertisements for other mobile games! This is because rather than collect ad revenue, and premium funds, premium is the only micro transaction in the game! You won’t be worried about getting interrupted mid-game either, because there’s a pause button that only took me a couple of seconds to notice. The game, even on max-brightness doesn’t really hurt my eyes, but everyone is different, so this didn’t need to be included. The levels are creative, despite the game having the premise of breaking glass with metal spheres. I would highly recommend this to anyone with even a second of spare time.