When I read the description I at first didn't want to play it because I thought it was just another "you die and can walk on your corpse" game. Glad I did play it though as I am pretty sure that "die to change your shape" isn't something that came up yet.
The game plays nice and the colored blocks instead of sprites work for this game. However, I would suggest to have some better indication on when the crushers will go down. Maybe have them retract just a bit more before they expand like the skewers in MM2 or add some other visual effect. Makes it just a bit nicer to time.