Low to moderate
Second, the first two levels worked as they should have. I played through each to 36 n moved forward. The next three levels, must be stuck!!!!! I have played all three levels probably 36,000 times!!!!!!!!! It will not advance!!!!
Third, on a positive note, I am glad there isn't any time limit. Even though I play the same level over n over, I get to play until I want to stop. Thank you for that!