Thank you! I feel like I got better at drawing these the more I did them, so the last ones definitely feel more refined.
I do also agree that the difficulty curve feels a bit arbitrary. I did reorder some of them based on my own personal solve times, but some of the ones I thought were easy ended up being hard for others (especially some of the 10x10 levels, surprisingly). Unfortunately it’s too late to reorder them now that the game is out, but if I make a sequel, I’ll definitely try to order them better.