pretty good
the good:
-increasing difficulty
-new character ever level, any varaiety is always good in a repetetive game like this one
-extra games and things
-ball 'power ups', again more varaity is good varaity
the bad:
-music was changing to often, i was just getting into a song, then i beat a level and the music changed
-still too repetetive
-needs more levels or if not that, at least recognise when i beat the game and not just go back to the menu screen
- the'1,2,3,go' was too slow, there was too much time inbetween levels
Glitch:
i did the sonic quiz after and for some of the question i apparently got wrong it just said "incorrect, the correct answer is sonic" i think one or two of the answers was wrong aswell but i forget which
Overall:
not bad. it does get repetetive and i would have closed it sooner but i kept wanting to know what the ball was going to be next level. good job and i look foward to more in the future!