It's more challenging than Boomshine.
But for being a more challenging game, Rainbow Stars is heavily generous on the points. By the time I hit level 8, I had a score over 3 million. The points system should be more balanced.
A chance to earn some extra lives would be nice as well. Finally a free play mode wouldn't hurt either (you'd play as long as you like with infinite lives, but no score is kept).
Got to admit, I am generous with the scoring, but there are only 10 levels, so if you can get 5 million you are doing well.
A free play mode is great idea though, maybe in another version.
I found it very relaxing and funny! However It's repetitive after a while...
A game like and sounds great!
Make a label level more beautiful without the use of gradient)