Unfaithful to the source but also underwhelming as a whole.

Rating: 5/10 (23 June 2013)

I liked the book. I watched this with an open mind that it may be "altered" to be more entertaining as a movie.
Still thought it was way too far off from the book to even have the name "World War Z". If they were going to change this much, there was no need to use WWZ. To people who don't know the book, they won't care. To those who do, they will be insulted by the movie. Isn't the whole point of adapting a book to a movie, based on the fact that the book was a success? Thus implying that a good portion of your target audience are the book readers. So why intentionally slap the readers in the face? It makes no sense when you watch this movie, since it probably resembles 20% or less of the book's story, concept and characters.
Even with the book differences, I could have lived with this movie being a solid zombie movie if the movie was actually about zombies. The "infected" may be fast and united, but the movie is pg-13 and that is just baffling. How can you possibly expect to make a movie like this and limit yourself with a pg-13 in an attempt to sell more tickets to kids? That's pretty much trading quality for quantity...or "selling out".
It was hard enough to watch this and hardly see any resemblance of the source material that was amazing, but then you are also limited to pg-13 action and violence for a movie of this nature. There was almost no blood, diluted violence, bad CGI and annoying "cut-away" action scenes. Very disappointing.