secondary world and hence high fantasy. J. K. Rowling's Harry Potter series is again set in the real world; however, while the primary setting, mostly the school, Hogwarts, is said to be located somewhere in Scotland, it is physically separated from the real world and becomes a "world-within-a-world". Similarly, Philip Pullman's His Dark Materials is largely set in an alternate Oxfordshire, a real location, but the fact that it is an alternate world at all places it in the high fantasy subgenre. Some sources place Harry Potter and His Dark Materials in the low fantasy genre. Karin E. Westman, writing in The Oxford Handbook of Children's Literature states that because "[J. K.] Rowling is much more interested in how fantasy provides perspective on everyday experience and the individual's place in society," and her inclusion of bildungsroman (a coming-of-age story) and the school story genres, "align her primarily with the domestic (or low) fantasy of authors such as E. Nesbit, Elizabeth Goudge, and Paul Gallico...as well as authors like Philip Pullman and Jonathan Stroud, who are also interested in the intersection of the personal and the political within quotidian experiences." Low fantasy is related to a number of other genres or subgenres. Urban fantasy takes place in a modern urban as opposed to rural or historical setting, and thus can be viewed as a type of low fantasy. Dark fantasy uses fantasy to create a sense of horror or dread. Since it often has a real-world setting, there is an overlap with low fantasy. Paranormal romance, of which the best-known variety is the vampire romance, is nearly always low fantasy. Superhero fiction may count as low fantasy if the hero's powers have a supernatural rather than a scientific (or pseudoscientific) explanation. Magical realism has a largely realistic view of the world but introduces supernatural elements. While authors such as Gene Wolfe and Terry Pratchett regard it as fantasy, it has been claimed as a different genre on the grounds that in magical realism the supernatural events are usually included in the worldview of the human characters while in low fantasy they usually violate it. Role-playing games For their own purposes role-playing games sometimes use a different definition of low fantasy. GURPS Fantasy defines the genre as "closer to realistic fiction than to myth. Low Fantasy stories focus on people's daily lives and practical goals ... A Low Fantasy campaign asks what