Crisis Core: Final Fantasy VII Reunion is an updated version of the PSP classic – showcasing the story of Zack Fair and a prequel to Final Fantasy VII. Jessica Howard goes over what was updated for this remake of a classic game. Crisis Core: Final Fantasy VII Reunion is an updated version of the PSP classic – showcasing the story of Zack Fair and a prequel to Final Fantasy VII. Jessica Howard goes over what was updated for this remake of a classic game.