Brad Pitt: World War Z Was Made For My Sons

Brad Pitt seen in 'World War Z' Brad Pitt seen in 'World War Z'

The Brangelina boys love zombies and dad Brad Pitt has made a film just for them – and hopefully also audiences around the world.

The zombie craze was lost on Brad until just a few years ago, but thanks to sons Maddox, 11, Pax, 9, and Knox, 4, the actor has become a self-professed aficionado of the undead.

“Four years ago I knew nothing about zombies but now I consider myself an expert,” he told reporters at CinemaCon in Las Vegas, per Deadline.

PHOTOS: Brangelina’s Family Album

And when it came time to securing the rights to Max Brook’s best-selling zombie apocalypse book, the actor/producer thought of his sons.

“This whole thing started because I just wanted to do a film my boys could see before they turned 18, one they liked anyway, and they loved zombies. So we settled on Max Brooks’ book called ‘World War Z,’” he said.

WATCH: Brad Pitt’s World War Z - Trailer

Bringing the book to the big screen came with its own set of obstacles.

“We were faced with two Herculean challenges. How do we keep the global spectacular dynamic scope of the book and how do we originate a zombie film that’s been done quite often and really, really well?” he continued.

PHOTOS: Brad Pitt & Angelina Jolie

Adding, “We got a little carried away. I think you are going to like this as much as my boys are going to.”

“World War Z” opens in theaters on June 21.

-- Jesse Spero

Copyright 2014 by NBC Universal, Inc. All rights reserved.
This material may not be published, broadcast, rewritten or redistributed.