You may exploit the idea that it is an ice cube more - maybe there could be spells or so. I think that the ice currently slides too much, and the level design wasn't ideal for the ice to climb up - or maybe I was just not skilful enough.
As for the final 'game over' splash screen, it wasn't working at the moment. The time and number of plays aren't functioning. But I understand it might be a last-minute thing and haven't been implemented.
Your idea of an ice cube in a volcano is quite cool (pun intended). Overall it is a great submission :)