There is a LONG way to go....
You may want to work on several things here: first, on red island it is impossible to dodge the falling rocks - they literally track the ball. There needs to be some sort of plot here - Meflanin and CaligaBeasta had that pegged, and I echo what they say here. The sound loop wears thin quickly, and a mute would be nice for the music (leaving sound effects intact.) See what else you can do to make the game a little less simplistic - right now, what you have is tapioca, and a little of that goes a long way.