Really neat concept and art! 

it's so well made! Boss fights had great amount of challenge in it. I Loved it :)

I recognize that player sprite :D i didn't think of changing its color in my games don't know why i didn't think of it T_T

really well made 

Cool art and concept!  The intro is well made and  I really liked the fact that you could trap enemies and objects in the bubbles! As Schu mentioned, I was also confused by the invisible walls.

Really neat concept! The edges of the screen that had invisible walls confused me since I assumed I'd be able to walk into new areas. I was also a bit confused how to remove some of the gates and eventually got to a point where I dropped down and felt stuck so I gave up (near the crashed machinery). I loved the art and story, especially the opening cutscene.