Vote for this to get it on GOG!

Good Old Games will optimise it for modern PCs and sell it DRM free!

But seriously, for copyright, I suspect that there will be a lot of nuances based on whether the source material is itself a literary work. Here we write FF based on a video game series, but with the novelization of some of that material, the FF becomes greyer than it was. There's a "prior art" argument since some it was written before the sanctioned books, and we're probably safer avoiding that material. But that's a consideration for writing one, not reading it. If you're discussing the interpretation of derivative works, it's probably not an issue to bring up.