Title: World War Z
Passage: Despite being the draft that got the film green-lit, Straczynski's script was tossed aside. Production was to begin at the start of 2009, but was delayed while the script was completely re-written by Matthew Michael Carnahan to set the film in the present, leaving behind much of the book's premise to make it more of an action film. In a 2012 interview, Brooks stated the film now had nothing in common with the novel other than the title. Filming commenced mid-2011, and the film was released in June 2013.
Question: is world war z based on a book
Answer: yes