I took me a while to get hang of the controls, but once I got the controls, they we're rather cool. I thought the game was a bit hard at the beginning, but after that it got easy quickly. The music was good, a shame that it didn't loop correctly.

kind of interesting controls... but the music is not original: http://www.youtube.com/watch?v=NRCkAumK5b4

You're supposed to use only assets you've created yourself... so the music kills you :)

Aside from the aforementioned not original music,
++ creative gameplay concept
++ great use of red squares (who are also trying to escape?)
-- UI could look prettier and more integrated with the game's graphics
-- the music loop was jarring
-- steep learning curve

Also: Why do bubbles emit gravity fields? :P