Meh….
Started off okay, but this game goes from ridiculously easy to ridiculously hard very quickly and has some very annoying quirks. Example: in the ‘ice’ levels, your bonus rockets do not block the spread of the ice, you lose them. In the cloud levels where you have to drop the birds to the bottom, the birds go behind the clouds and are invisible. The early levels are too easy to be anything of a challenge, the later levels require so many lives to complete it’s tedious. The ads after every screen become irritating too, especially if you are on your 20th attempt to clear a level. I played to level 300, but it’s too annoying to go further.