I liked the idea of the game and the layers on the levels, but clicking them with mouse was a bit hard while simultanously trying to get to the block :D Maybe there was a button which I missed.
I couldn't really figure out how to work it and the tutorial was glitching for me (some parts turned invisible, I'm using Chrome though so not sure what to do, since you had the warning about some browsers doing that.)
Good idea and worked well with the theme, something to further develop for sure!