It had everything! A gripping story, loveable characters, addictive battle system, replay value, amazing sound track and for it's time (16-bit era and whatnot) it had nice graphics! The 3DS port/remake was also brilliant, with it's animated cut scenes and with being portable, it made for a more deep RPG experience.
Hands down one of the greatest games ever made. whenever i pop it in i never have a short session it always draws me in everytime. Square sure doesent make em like they used to. Miss games like Chrono trigger and seceret of mana.