World War Z - Proving Grounds Update Trailer - IGN

The update features the Weekly Challenge mode, a separate playlist with unique gameplay modifiers, and more. The Proving Grounds update is available now for PlayStation 4, Xbox One and PC.

World War Z: Aftermath - Official Holy Terror Update Trailer - IGN

Video] 'World War Z' Adds Weekly Challenge Mode in Today's Proving Grounds Update - Bloody Disgusting

World War Z Aftermath [Trailers] - IGN

World War Z Aftermath [Trailers] - IGN

World War Z Aftermath [Trailers] - IGN

World War Z Trailer #2 - IGN

World War Z, Proving Grounds Update Trailer

World War Z [Trailers] - IGN