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 Prisoner of Azkaban (video game) Harry Potter and the Prisoner of Azkaban (video game) Harry Potter and the Prisoner of Azkaban is an action-adventure video game based on J. K. Rowling's "Harry Potter and the Prisoner of Azkaban", the third novel in the "Harry Potter" series and the film of the same name. The game was developed by three teams, KnowWonder, Griptonite Games, and EA UK, and was published by EA Games and Warner Bros. Interactive Entertainment. The game was released as a trio, with separate versions for Game Boy Advance, Microsoft Windows, and home consoles (released on GameCube, PlayStation 2, and Xbox.) The game