This Game is Amazing! It's so addicting to me! But it's so hard to reach after level like 16 if your LUCKY! challenges are almost impossible tho but so fun to try at! The ONLY reason I gave it 4 is because of the ads and the 30 second add things, but all apps basically have that and overall this app is AMAZING and takes away my stress too. I would definitely recommend, unless your bothered by ads!