User blog comment:D. Cello/Assassin's Creed: Revelations (PC) - Official Assassin's Creed Wiki Review/@comment-187.105.170.237-20111205142124/@comment-4651659-20111206034806

I think the only reason why ubisoft made ACR because it was to explain how Ezio continued the bloodline, by meeting Sofia. They just added the rest i think too expand the game.