Without reading back too far, I am left somewhat confused about the transition from chapter to chapter. Is it actually possible to play each chapter, 1 to 6, without using the online version, or cracked version, or real or adopted versions etc? Or an incest patch? etc,.... Too many versions, and they are arranged in the OP as a mix-and-match pot luck for downloads.
Surely it would be better to not group them as "all chapter 1 versions, all chapter 2 versions,.. etc,.." as they are not compatible, and instead group them as "DFD adopted!, DFD online!, DFD real!" and just add further chapter versions to each of those groupings. Group them by how they work together, and not by chapter number, and that way they can have a spoiler explaining any specific needs for saving thats specific to that group of files. It doesnt matter if a chapter is also included in multiple lists either,.. it just reduces any confusion, and players could then choose to download exactly the files needed, for exactly the game they have been playing so far.
Think of them as a number of books. You need compatible chapters to make a story, so you want to be able to pick up a whole book, with the chapters arranged for you, and not have to pick out chapters in order to make a completed book. If a future chapter is added, you can then tell if its compatible to the version you have been playing, or if you have to wait a little longer.
As it is, from the comments I see, despite how good the game may look, I get the impression that nothing is compatible,.. or that I could play a few chapters and then run into a brick wall because my position wont then work on the next chapter,... and I know thats not totally true.