Thanks for keeping it mostly spoiler free, like you said, I'm interested in the behind the scenes but won't spoil the surprise for myself. :D
You did mention before that you put different emphasis on different Chapter (1 with mini-games and 2 with a non-linar approach to story events, I think)
Does Chapter 3 also have a topic you want to dive into or is it a summary of elements you learned in the other Chapters?