It appears that you have stumbled across my level. Well, the demo, anyways. I started making this really difficult thing, and I finished up the first portion of it. Maybe one day I'll get to finishing the whole thing! Until then, enjoy this demo.
As with many things, please comment on this. Anything works. Say what you liked, what you didn't like, say "Hi," anything.
EDIT 1/17/2015: Added the second version to the demo! No added gameplay, but it looks nicer!
EDIT 1/18/2015: Added the third demo version! Hopefully this looks nicer.
EDIT 1/18/2015 (2): Added two fourth demo versions! The difference is in the music rooms, which I would like to know which one looks better. Also, all versions 4 and future will be posted on the reply which introduces its changes.