Nothing has actually been implemented properly, this is just for show mostly, and wont actually relate in anyway to the actual game.

Since the magic and such isnt implemented yet, I didnt use them. The yellow is a bit off, but you get the idea. The music used in the video will be in the game, but except for the Simpsons Theme it'll be used elsewhere, I simply put them in this one because I like them so much.

I lost because I gave myself an enemy that was too good for the default levels (10 for Maggie, 1 for Lisa) and OBVIOUSLY the battle sprites arent made yet.

http://babysimpson.co.uk/staff/gary/simpfantgameplay.wmv

Wow, that's pretty cool!
You changed the music though, right? :X Boss theme from FF VIII and a Final Fantasy X tune as game over? I think I've heard the first in the piano collections and seems to be in its place.
Kudos! I'd love to play this once its finished, especially since I never played the original FF VI =/