Probably one of the worst games i have ever seen so first of all to play other levels u need to earn a certain amount of stars so u have to play the same old boring levels all over again hoping u can get 3 stars on all the levels which obviously is not fun it does not add challenge to the game it just adds boredom second of all the stars depend on how many coins u get so if u do really bad but get all coins and tricks 3 stars if u do really good but miss some coins and tricks 0 stars thats bs