Perhaps the biggest problem for World War Z's sequel is what to call it. World War Z 2? World War Zour? World War Z: Zed's Dead? Then there's possibilty of the threequel's name being World War Z 3, which doesn't even bear thinking about. And yet, it is under consideration, as Brad Pitt revealed to the press at this year's Toronto Film Festival. “We’re certainly talking about it, yes,” he told Variety . “We have so many ideas on the table from the time we spent developing this thing and figuring out how the zombie worlds work. We gotta get the script right first to determine if we go further.” Very loosely based on Max "Son of Mel" Brooks' apocalyptic zombie novel World War Z, the Marc Forster movie cost nearly $200 million to make - thanks, in part, to lengthy third act reshoots that led many to believe it would be a cast-iron clanger on release - but has so far made $533 million at the worldwide box office. This makes it Brad Pitt's h