Great until the near impossible "pink levels" were introduced. It is one thing to have hard levels that take a while to beat....(that keeps the game interesting and challenging), but to introduce 1 chance to beat pink levels that you will lose 99% of the time (and lose all of your earned extras while your at it) is incredibly annoying. Annoying enough to uninstall. The irony is I actually spent money on the game prior to this change and now I just refuse to spend more and in turn, play way less.