Square Enix recently announced that Final Fantasy III is now available to download from the PlayStation Store! The game can be played on the PlayStation 3, PlayStation Portable and PlayStation Vita.
You follow four Warriors of Light - Luneth, Arc, Refia, and Ingus as they discover a hidden cavern after an earthquake. Under the guidance of Topapa, the village elder, they explore the cavern to find a crystal of light held within. The crystal entrusts to them some of its power and instructs them to rescue the world from descending into darkness. Embarking on their adventure they soon discover that there lies a whole world beyond the boundaries of the floating continent upon which they were living.
See screenshots below! (Clicking on an image triggers the gallery for easier viewing).