World War Z is a 2013 apocalyptic thriller film directed by Marc Forster, loosely based on the 2006 novel of the same name by Max Brooks. The film stars Brad Pitt as a former United Nations employee who travels the world in search of a way to stop a zombie pandemic.

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: The VFX team used a proprietary program called Alice to build digital "agents" programmed with artificial intelligence. Each agent followed specific rules to reach an objective, causing them to crawl over one another and physically interact rather than just passing through each other.

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