User blog comment:The Joker~/Assassin's Creed Revelations Review./@comment-4406357-20120726012831/@comment-4829046-20120726122429

I didn't mean it like that. There are some expansion packs that are like DLC's that override currnt game files BUT there are also expansions that are completely different games entirely and need to be purchased seperately until there is a combo pack available.