Quidditch Through the Ages to Find Them" have raised £17 million. In 2001, Rowling penned two companion books to the "Harry Potter series", "Quidditch Through the Ages" and "Fantastic Beasts and Where to Find Them", for British charity and offshoot of Live Aid, Comic Relief with all of her royalties going to the charity. As of July 2008, the books combined are estimated to have earned over $30 million for Comic Relief. The two books have since been made available in hardcover. Within the fictional world of "Harry Potter", "Quidditch Through the Ages" is written by Kennilworthy Whisp, a renowned Quidditch expert. In both
Harry Potter and the Chamber of Secrets (video game) from the Entertainment and Leisure Software Publishers Association (ELSPA), indicating sales of at least 300,000 copies in the United Kingdom. Harry Potter and the Chamber of Secrets (video game) Harry Potter and the Chamber of Secrets is an action-adventure video game published by Electronic Arts based on J.K. Rowling's novel "Harry Potter and the Chamber of Secrets" and the film of the same name. It was the last "Harry Potter" to be game released for the Game Boy Color and also the last "Harry Potter" game to be released on the PlayStation. The game received positive reviews from critics across