I don't know if it was this one, but I played a re-balanced version where the first battle was virtually impossible. And on the attempt that I was finally going to win one of the enemies just all of a sudden used this new move that wasn't in the original game and owned me.

In my experience re-balances are usually less about making the game more interesting and challenging, but more about making them unfair and punishingly difficult. Let me know if this one is actually fun, as I would enjoy another go at FFT.