Really nice games, I did levels 1-10 and then jumped to 20, it becomes very hard to keep track... I'd like the camera to be on right click instead of left click, so you don't accidentally break blocks, and it would be nice to have some way to see which piece of wood is actually blocking - it's almost never the first (left) one :p
I saw the Quirks section on your game page, once that's fixed you'll have a nice game :)
(oh and if you could find a japan-themed skybox that's not over-detailed, it would look cool)