Clever, I really liked the concept! I found it really difficult at first and didn't realise that my last block was still in the scene when it restarted, because the music resetting made me think the scene had reloaded - but I had fun retrying once I had it figured out. It would be cool if there were some kind of penalty to using too many blocks - like you only get so many for the whole run, or something like that! Still, very cool! Great job!