I found out at level 11 that the eyes follow the mouse. And you said my biomass mechanic was nice? Man your worm can reverse! And as it feeds it grows, its basically snake as a puzzle game!
I might be a bit generous, but I rated 5 stars everywhere appart from audio and game design: sound are a bit repetitive, I've heard that alternating a same sound with different pitch does wonder (should have done that myself if I had time). Also, lacking vision on how many levels are ahead, not being able to skip or select level is too bad :(
By the way, I've a total count of 1002 steps =D