Felt a bit anticlimactic for nggnpuvat guvatf gb gur fgneg naq raq cbvagf bs gur yriry to be intentionally prevented for so long, only for it to be used in one level. I was waiting for a whole section about that (then again I shouldn't judge content that doesn't exist). I also thought world 8's mechanic was a bit...boring in comparison to the others. Other than that, great job - these are some very well-designed puzzles (and I always love it when a game makes a point to never introduce new puzzle elements at all)
I thought it would be… funnier this way, it not actually being a section intro creates more initial confusion? And much more importantly I did not actually see a way to get many other puzzle ideas out of this mechanic - but now I’m thinking about it again and I may be wrong. I did have some plans related to this even early on that were way too ambitious, but I might figure something out and eventually update the game! Will see :)