In Kingdom Hearts II when you finish the story can you still play the game and have all the worlds????

May be...

unlocked so that you can train to fight sephiroth and then just keep playing for the fun of it?????? or once you finish the story you cant do that or what? also how should i train i know there are a lot of people that say only the ultima key-blade can kill him but where do i get the recipe for it and where do i find the ingredients???? and lastly where do i find him and what level do you reccomend that i have and/or abilities or summon or magic AMD I DONT WANT ANY ONE TO POST AN ANSWER (I.E) MAYBE YOU CAN FIND THE ANSWER HERE : WWW.SOMEWIERDNBASHOESITETHING.COM/ JORDANS. THANK YOU!!!

No, the last save before the final boss is the last save in the game. If you want to do anything else go ahead, it doesn't matter. As for Sephiroth, it doesn't matter which keyblade you use, it's just the Ultima keyblade is one of the more powerful ones to use. I beat him with it, and I've also beat him with just the regular keyblade as a challenge. Just get to the max level if you want to make it easier. You find him at Hollow Bastion past the point where you fight the 1000 heartless. I suggest you have at least the abilities like Second Chance and that other one that ensure you have at least 1 hp left after an attack. I don't think you can summon anyone because you have to fight him as Sora alone.



And once you beat him, you can't fight him again. So if you want to fight him again, save an extra save file.

yes