I wish the levels increased gradually in difficulty; while the tutorial stuff helped me understand the basic mechanics, when I started the actual game I quickly got stumped, ran out the battery and wasn't able to progress. on which note: since you can't seem to do anything once you're out of battery, having a failstate that resets would be nice, since otherwise you just end up clicking around trying to figure out if there's anything else you can do until you give up and reset, which isn't super fun ):