"Camelot" is not IP for a number of reasons. The first reason would be that the idea of Camelot dates back to the twelfth century, roughly five hundred years prior to the first modern copyright laws. The second is that Camelot is not even in what is considered to be the public domain. Much like Norse mythology, what people know of them is not traceable to any specific work with an identifiable author. Some things do have identifiable authors, from about nine hundred years ago, and those few stand in fierce contrast to the overwhelming majority of the information that comprises each mythology. These sources are essentially so far from anything that can be called intellectual property that to use them as an example of a work in the public domain that he may as well refer to them as abandonware. The word he was looking for is, "setting." That being said, I will probably buy this game.