Max Brooks's zombie novel World War Z has surpassed the million copies sold mark. The book, which was publishing by Random House's Crown imprint in hardcover in September 2006, has sold over 1 million copies in all formats combined: hardcover, paperback and digital. The numbers continue an impressive run for Brooks, whose previous book on the undead, The Zombie Survival Guide, has sold nearly 1.4 million copies.

Paramount's forthcoming adaptation of World War Z, which stars Brad Pitt, is set to premiere on December 21.