I remember as a child reading these types of books in school. I loved them and one of my teachers had us do a book report on a book in the "choose your own adventure" genre. It was interested how one idea, a setting and a protagonist can do in one of these books. I remember reading an endless quest book called "Mountains of Mirrors" and it was a book I would constantly read and read over and over again. I saw this was a trend in the 80s/90s and it died off pretty quickly. What is funny is i had found youtube videos having this type of method of story telling with annotations linking to a section of the story (food for thought). Why are there not as many books like this anymore? I could see this being perfect for an author who has multiple ideas to telling the story or even having the multiple universe effect. Imagine Harry Potter books being like this where you can tell the story in 10+ different ways leading to a similar ending? (only example I can give now) Thinking about it sounds dated and annoying flipping through pages to the next scene or having to become disinterested in one storyline and tracing back to another.