Very addictive game and good gameplay. The controls were a bit iffy for me (I'm left-handed) and I was hoping that there were options to change is from wasd to the arrow keys. There weren't, of course.
Also, I was trying to find an alternative way to change the blob's colors. The wheel moved my entire browser so it was annoying every time I tried to change colors.
Other than that, it was an amazing game. 5 stars!