Well, I'm a huge Final Fantasy fan. I don't own the first II, never found them, but I have every single one (except 11, of course, what were they thinking?) that came out for SNES, PS1, PS@ and PS3. The most significant difference in battles is the "leader" system, which KINDA sucks, since you only have control of ONE of your party members (the Leader), and if s/he bites it, it's game over. However, the game makes constant checkpoints, so if you die, you respawn before the battle, instead of having to load and haul up an entire dungeon, which is kind of nice of them. Also, battles are INSANELY harder, and POST-INSANELY fast, meaning, you only control one character because, frankly, you'd go nuts trying to input commands for 3 characters at the same time. Even with one, it's usually easier to let the AI do the work, just imputing manually what you ABSOLUTELY NEED (the AI is prettry good, btw, except when it comes to buffs, which they overkill casting every single one available, and usually on uneeded characters, like Bravery on a caster). I also like the ranking system, which dictates the odds of getting drops from enemies, and the fact that stronger items lower the target time, so even if your all buffed up, 5-starring battles (to get good drops) is still tricky sometimes. On the down side, the upgrading system is just insane. Drops are more random than ever, (specially rare drops, good luck trying to farm Trapezohedrons for ultimate weapons), and everything costs a boatload of money to upgrade (money, let me add, that you do not have, seriously, you are basically a party of beggars most of the game, and when that finally changes, you can't even scratch the amount of money needed to upgrade the good stuff). Tip: NEVER sell any weapons/acessories (just not worth it), never dismantle anything unless you can't upgrade it anymore (even with catalysts) and won't need it, and early on, refrain from upgrading weapons, just not worth it. Upgrade acessories instead, as those you can move around the group.