Ugh… do you really have to reply to a comment that is 8 months old?
Also, you missed the point entirely. Even a CYOA book filled with all sorts of routes is rail-roaded in the sense you have the play the game the way the author envisioned, the choices therein in are still a part of the author’s vision on how you can accomplish it. Here’s an example: If your main quest is to acquire a gem from a wizard tower in the middle of Hell, you can choose your path, what to do and how to do it, but you can’t really deviate from your goal because otherwise there would be no story. This is what I mean by “every game, even CYOAs, are a little rail-roaded”.
As far as I know there is no game, book or digital, that truly gives you the freedom to do as you please, not unless people come up with a sandbox-like CYOA that is proceduraly generated by a complex AI, which, as amazing it may sound, hasn’t been invented yet. Even if someone were to replicate those CYOAs of old I just don’t see how it would profitable enough to compensate the years required to write dozens of endings and a hundred routes, all more or less equally interesting and doable, with good writing and pace. What kind of publisher would even back that up? CoG is an exception among exceptions.