I was hooked on these when I was a kid, though my preference was for a more Fantasy/Sc-Fi brand called Fighting Fantasy. For those who aren’t familiar with these books, they allow the reader to assume the role of protagonist, and decide the course of events, to make choices and risk failure as they seek to complete the quest. A typical choice might ask the following:
To accept the ogre’s offer, turn to page 7
To attack the ogre, turn to page 35
It was immersive, great fun, and eventually led me to roleplaying, where instead of being presented with two or three choices at each juncture, you were limited only by your ingenuity and the skill of the story teller.
To change tack: In 1987 Julio Cortazar wrote Rayuela, translated into English as Hopscotch. It’s a brilliant novel, and can be read in a variety of ways. Unlike a Choose Your Own Adventure novel, where you pick what the protagonist does, you are instead offered the choice to delve more deeply into esoteric elements of the story by skipping to passages that describe or explore elements of the tale that the direct narrative skips over. There were some 300 entries, but only 150 or so of them composed the actual novel; the other half were ancillary, and enriched the text, subverting and complicating the tale. You could read the novel in any number of ways, but that was the crux of it: the choice was yours.