Final Fantasy 4. The story was great, but the rest of the game sucked. I was gonna say Earthbound, but then I remembered that it was the quirky humor was built into every facet of the game itself that really sold it for me, not story itself. Other than that, I can't say that there are any game-books I'd want to read. Partly because I've never really cared for books, but also because I never really cared for the stories in games either. They're okay as short breaks between the action, but otherwise I just ignore them.