Simple yet addictive game. I just had to keep playing until I had the high score !
I did mute the sound as the music is so repetitive that I think the game would be better without music at all ;P I also never used the gas form on purpose (I thought there were only 2 forms while playing to be honest). Actually thought it was a bug or that it happened when a box fell on top of me when I got even smaller than fluid. Only figured out there was a gas form when reading the comments here :D
Great job overall !