Flamesong

The novel itself is pretty unremarkable, honestly about the same level as most fiction based around a published RPG setting. But I really love the setting in this case and it was pretty engaging to see it brought to life like this. I think it would have been even better if it had been written with less clunky setting exposition though - there is absolutely no reason why you'd want to read this if you weren't already into the setting and it makes the dialog flow awkwardly at times.

A world orbiting a star but somehow cut off from the rest of the Galaxy, which it cannot even see, Dr. Barker's fantasy is quite developed and even boasts its own Role playing game. (Empire of the Petal throne) This is plausible entertainment.