Parents who have children who are often scared or influenced by violent and frightening films, take caution while reviewing this film. This has to be the most violent PG-13 rated movie I have ever seen besides The Dark Night. The extensive violence includes semi-graphic images of killings and injuries earned in battles. Humans use spears, baseball bats, machine/hand guns, knives, swords, etc. to defend themselves against the zombies. Besides the immense violence the close-ups of the undead are quite disturbing. Don't even get me started on the "unrated cut." There is some language sprinkled throughout including a couple instances of s--t and several other mild swear words. Overall, this movie has so much more to offer than I expected. The trailers were not that interesting, and I had never read the book series so I didn't know what to expect. If you love thrillers, zombie films, or Brad Pitt, I would definitely recommend the movie and can't wait to see its to possible sequels.