I like the gameplay granted; however if you dare... I don't know choose an ad reward and accidently click to the app store...and suddenly oh no... You got reward AND lost your progress of that puzzle...you lost also a life in the progess... So if you dare leave the game...might as well stay out because all of your work if you are mid-game gone. The streaks you had worked up until then gone. The game simply sucks because of the lack of being able to multitask with it. It changed it way for $. FML