There was a time when Brad Pitt’s film adaptation of the Max Brooks novel “World War Z” seemed doomed. The list of potentially fatal problems seemed endless.

There were re-writes and re-shoots. At one point it was rumored that Pitt wasn’t speaking with director Marc Forster. The film’s price tag grew ever closer to the 200 million dollar mark. Early sneak peeks at the CGI zombie swarms had genre aficionados grumbling. To top it all off, Brooks came out and basically said he hoped the movie was good, but didn’t expect it to resemble his book.

However, the legion of zombie fans have proven that they are as ravenous as the undead creatures they adore. In just a short time, World War Z the film has earned back nearly 120 million, with more than half of that coming from the U.S. Market alone.

Buoyed by those numbers, plans for a sequel are already starting to take shape. While nothing official has been announced through official channels, unnamed sources are telling news agencies like The Associated Press, that one and possibly two more movies could soon get the green light.

Those who have followed the project over the years may recall that when Pitt’s Plan B production company secured the rights to World War Z, the initial concept was to develop a trilogy. The extraordinary cost of the first film, along with all the aforementioned problems put that thought out of the minds of many.

Spoiler alert: For those who haven’t seen the film, the remainder of this article may contain spoilers.

Interestingly, the first World War Z film had a very open ending in general, but not so much for Pitt’s character. Any sequel would likely have Pitt attached, but what would possess his character to leave his family behind a second time?