Really good idea, but quite hard and a bit awkward to remember which thing does what and click in time. I got better at clicking things on and off after some practice, but it was still a tricky juggle. The graphics are fine and the music is nice too.
If you're thinking of working more on this post-game, it would be awesome if there were perhaps keyboard controls too (numbers 1-9 or something?), or some colour coding (or the keyboard numbers) where walls can toggle on and off, and matching colours on the controls to click. I think with those tweaks, the current difficulty would be fine :)