You're going to think I'm crazy, but I'm not making this up.
A conversation that takes place late in the game, between Yuna and a genius child who just happens to be named Shinra who works on her airship:
Shinra: Aha...
Yuna: What are you looking at?
Shinra: Farplane data. The more study it, the more fascinating it gets. There's limitless energy swirling around in there.
Yuna: Limitless energy?
Shinra: The life force that flows through our planet, I think. With a little work, we could probably extract the energy in a usable form.
(Starting to sound familiar?)
Brother: Sweet!
Shinra: Of course, that'd take generations.
Brother: That's no fun!
Buddy: Well still, it is something worth shooting for.
Yuna: Think how much Spira would change if we ever got it to work! Maybe one day we could build a city full of light, one that never sleeps!
(Kind of like Midgar, eh?)
Shinra: No doubt about it.
Yuna: Just imagine! But I'll never get to see it.
I dropped my controller when I read this. Needless to say, I was intrigued, so I ran a google search and found this little gem:
Weird shit, eh? It looks like Square is going to start taking seriously the idea of further developing the Final Fantasy mythology and even establishing a continuity between the worlds.A while back, a guide was released by DigiCube for Final Fantasy X-2 titled "Final Fantasy X-2: Ultimania Guide". The book shed some light on the story connection between Final Fantasy VII and Final Fantasy X. In FFX-2, there is a character by the name of Shinra who helps the Gullwings (Yuna's team) hunt for spheres all around Spira. Eventually, Shinra leaves the Gullwings and starts a new project to extract Mako from the Far planes. The project was financed by the al bhed Rin and was fairly successful. However, technology hadn't advanced far enough in Spira for them to use Mako worldwide.
Many years into the future, the descendants of Shinra (from FFX-2) went to a new planet and used his teachings to draw Mako out of the new planet, cue Final Fantasy 7. So apparently the FFX series is somewhat a prequel to FF7.
This idea was just shown in the Ultimania guide and was not shown in any of the games mentioned above. The connection is fairly interesting and would have been even more interesting if it were in the games.