Port Overdosed: First, there were just the NES and MSX 2 versions. Then came the Wonderswan Color remake, and suddenly, Square couldn't stop re-releasing this game. The Origins re-remake was based on the WSC version, and so were the three Japanese cell phone releases, based on the WSC version, as well as the Dawn of Souls edition on the Game Boy Advance, and the American cell phone release in 2010. Then Square Enix redrew all the sprites and backgrounds in the game and released it once again for the PSP, and this version found its way to the PS3, and iOS, and Android. Oh, and it's on the Virtual Console, too—the NES version, that is. Did you keep track of all that?
Reference Overdosed: After... a fashion. You see, Final Fantasy is really, more or less, an unlicensed Dungeons & Dragons product. Virtually the entire bestiary is lifted from 1st edition AD&D (most infamously including the fact that the "Eye" was originally a Beholder, and someone at Nintendo was sharp enough to change it so that TSR wouldn't sue for use of an assiduously-guarded part of the D&D IP), almost all the classes are taken right from the D&D class list (with the exception of the Red Mage and with the White Mage losing a Cleric's heavy armor for balance purposes, though the Red Mage may have origins in Dragonlance), the spell system and list is lifted almost entirely (with only a bit of redesign on the top-end to deal with the missing ninth spell level), and even substantial parts of the combat are taken (simultaneous initiative rolls, multiple hits per attack action, attacks landing on a dead target deliberately because you have to designate targets ahead of initiative, etc). Once you scratch the surface even slightly, it becomes very obvious that the game was lifted whole-cloth from D&D, and it almost seems a bit miraculous that TSR never took Square to court over it all.
They probably would have, if the Beholder had actually made it into the English release. Square Enix probably owes its continued existence to the nameless Nintendo employee who realized what a dire legal threat that posed and how clear that one monster made all the "borrowing".
Word of Dante: A lot of people attribute the personalities of the 8-Bit Theater cast to the characters in the game. Of course, nobody has a personality in the game, so you can add pretty much whatever you want and it still works.