Wished I could keep playing once the demo ends. I was just getting ready to try to make some magical metal to restore the mirror. Didn't know 10 cubes would trigger the end. Interesting game. Freaky ending.
One more thing, I was really hoping I could use that thief to hold down the orb. Was getting really tired of doing it myself. Enough cubes would sort of fix that, but I wasn't there yet. It would take 100 cubes or so to start a spell with a full orb meter and be able to walk away.