Despite phenomenal sales of the book “Harry Potter and the Cursed Child,” it appears that a lot of fans have been left disappointed after reading it. The book, which comes in script form, is officially categorized as the eighth installment of the wildly popular Harry Potter series by British author J.K. Rowling.

According to the New York Times, the name J.K. Rowling has caused some debate among fans. While the original Harry Potter author approved the script, it was actually written by Jack Thorne, a prominent playwright. However, Rowling’s name is displayed prominently on the cover of “Harry Potter and the Cursed Child.”

Apart from not being written by Rowling herself, some fans are also finding fault in the script format. This deviates from the usual colorful and descriptive narrative that has been present in the previous books. The script in itself does not convey the visual elements of what the audience will see if they are watching the play live. The play of the same name opened in London on the same day as the book’s release. Tickets have so far been sold out and the play has received stellar reviews.

Despite the criticism from some die-hard fans, BBC reports that “Harry Potter and the Cursed Child” is this decade’s fastest-selling book in the UK. At the rate that the book is flying off the shelves, it is expected to come in second to the total number of sales for any book in its first week. The record is being held by its predecessor “Harry Potter and the Deathly Hallows.”

While reading only the script has been dubbed as an “incomplete experience” compared to watching the play, readers who currently do not have access to the play are lapping up the closest thing that they can get. Due to mounting demand, a fresh wave of tickets for the play is also expected to be released.