No surprise it’s FF VI. Absolutely peak final fantasy. Classic Uematsu soundtrack, great story with an iconic villain and a lovable cast. Active Time Battles and a phenomenal Esper system for customization. Square at the height of their pixel art powers with some beautiful sprites. Ultros, the opera scene, train suplexing…
It’s a shame they kind of butchered the pixel remaster. I’d try playing a romhack version on an emulator if you’re interested, preferably something based on Woolsey’s wonderful translation (son of a submariner!).