Thanks for the in-depth feedback! 

I appreciate the compliments on what you loved. I spent a long time crafting the feel of the split-flip modules and I'm glad it paid off! Good feedback on the up arrow being an undo. While not a full solve (ideally both up and cmd/ctrl z work), the undo keybind is remappable.

I also wanted a hint system. I even implemented a few, but none of them had the gameplay polish I felt was appropriate for the jam entry.  I didn't anticipate dictionaries being so difficult, but it turns out finding a good set of words that includes all the words you know while also not requiring archaic words to find a valid solution was not easy! I spent more time than I wanted on it, and if this becomes a full game, it definitely would need way more tuning. 

 You can also skip around and try the other levels and come back to level 31 later. I don't want to be spoiling the solution in the comments for the other players ;) 

 Thanks again for the play and the notes.