Hey, could you please add a potion for seeing "invisible" tiles? They're really hard to find. It might be rare, but I've only found three zones that can be accessed via non-existent tiles.
I guess you are talking about the books and signs that can be found and read in certain spots?
All of these have small visual clues. Spots with readable books are always marked with a bookshelfs and Signs are marked with well signs. They serve more as small secrets to find.
