Catching Fire was later released in ebook and audiobook format. "Catching Fire" received mostly positive reviews, with reviewers praising Collins' prose, the book's ending, and the development of Katniss's character. According to critics, major themes of the novel include survival, authoritarianism, rebellion and interdependence versus independence. The book has sold more than 19 million copies in the U.S. alone. A film adaptation, "", was released on November 22, 2013. After winning the 74th Hunger Games in the previous novel, Katniss Everdeen and Peeta Mellark return home to District 12, the poorest sector in the country of Panem. On the day that Katniss
Katniss Everdeen the Games, Katniss forms an alliance with Rue after Rue helps Katniss escape the Careers with a tracker jacker nest, getting her a bow in the process. After healing Katniss' wounds from the tracker jacker poison, Rue is killed by Marvel, the male tribute from District 1. Later, the rules are changed so that if the remaining two tributes come from the same district, they will both become victors. Katniss hurries to find Peeta, who is seriously injured from saving Katniss from Cato, the District 2 male, and they resume their "star-crossed lovers" reputation, gaining sympathy from sponsors. While Katniss