I love this game, it's a lot of fun, and it's definitely challenging, but a) the challenges are almost impossible and b) it gets REALLY frustrating if your playing offline, when you lose a level you have to restart from the very beginning, there's no option to try again unless your online which is when they offer you a retry if you watch an ad but even that doesn't happen every time. I would like if you could use apples to buy a retry and get powerups to slow down the wheels to make it easier.