Chances are that most people haven't heard of this four-part OAV (Original Animation Video) series which made it to US shores in 1994. The story of the anime, called "Final Fantasy: Legend Of The Crystals", is based on that of FF5. However, the director of the anime is Rin Taro; the rest of the credits have nothing to do with the main FF series. My impression is that Hironobu Sakaguchi and Nobuo Uematsu had veto power for this production, but no active hand in it. Therefore, it's not technically a FF production. However, since the anime does follow the FF world fairly well, I've included it in this site.
Final Fantasy Wind and Fire (1994)