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) novel; saying "The main thing to keep in mind is that Prisoner of Azkaban on the GBA offers a fun way for Harry Potter fans to step into the shoes of their favorite wizard-in-training and experience firsthand everything that happened in the third installment of the series." "GameZone" also reviewed the Game Boy advanced version, calling it "a really fun romp in Harry's world! Fans should be well-pleased." "IGN" commented on the game not forcing "random battes" from similar RPGs as a positive, but saying that it wasn't "enough to make Prisoner of Azkaban a successful RPG. It's got a