Now that the long-in-development South Park: The Fractured But Whole is close at hand, Ubisoft and South Park Studios are finally opening up about its creation. To start, they've posted a behind-the-scenes video that isn't quite the usual puff piece. South Park creators Trey Parker and Matt Stone not only why the game exists, how it was made and what's new, but how they got some of their feedback on The Stick of Truth. They apparently got plenty of helpful input by watching PewDiePie's playthrough -- after all, the YouTube star is telling you what he thinks at any given moment.