I really liked the mechanic of sticking the bubbles to eachother! The art also looked great! I think if you added more levels, you could make a very interesting puzzle game out of this. I did have some minor problems: Sometimes, the bubbles wouldn't stick (or I barely missed, maybe add better feedback to bubbles that are stuck together). I also once launched into thorns without being killed, but that was just a small bug. All in all though, great little game!