Very fun! Game breaking glitch with fireball somehow, though, and I'm not sure what caused it. Second Green level I think - starts with a Big Slime and the boss is a Squidface - and I'd started turn on a hatching egg, so a Common Kobold was on top of me, and I tried casting a Fireball centered on the boss, in hopes that it would do 36 damage total - and the dev console said something like 'clone tile already present', and wouldn't let me Undo, and I closed the console in hopes that that was the problem but now I can't cast spells, undo, or end turn. I can still read unit and spell descriptions?
Sorry I didn't get the actual error code. :(
Edit: I was able to reload the browser and restart the level from the map, though, so that's nice.