There was no music for me, yet another comment says there is one? Is it bug on my side?
Anyhow, this game is fantastic. First I though I had to make all tiles dotted "reverse pacman" style and spend SO much time trying to do so... and then I've read that there is ending portal somewhere :D But you know what? I had a lot of fun while doing something stupid and still loved gameplay loop with portal switching and orb mechanic.
It looks pleasing overal too and movement is responsive as well!