Harry Potter a cause-and-effect relationship, there is a clear correlation, and it seems that Harry Potter's cultural impact may be stronger than just a fandom bond. Many fan fiction and fan art works about "Harry Potter" have been made. In March 2007, "Harry Potter" was the most commonly searched fan fiction subject on the internet. At the University of Michigan in 2009, StarKid Productions performed an original musical parodying the "Harry Potter" series called "A Very Potter Musical". The musical was awarded "Entertainment Weekly"'s 10 Best Viral Videos of 2009. The sport Quidditch, played by characters in the "Harry Potter" series, was
The Books of Magic began publishing a series of "Books of Magic" young adult novels under the Eos imprint, adapted from the comics series, by Carla Jablonski. Each novel featured cover art by Christopher Moeller. The first book is based on the original miniseries. The subsequent books are based on story arcs in the second series; except "The Children's Crusade", which is based on the Vertigo crossover event of the same name. A film version of "The Books of Magic" has been in development hell for many years. It was originally optioned "by Warners some years before the first Harry Potter book was published"