Matt Stone and Trey Parker interviewed at the Podcast Unlocked at E3 (2015) 

Trey Parker and Matt Stone talks about their video game, South Park: The Fractured But Whole, that serves as a follow-up to the New Kid's adventures in The Stick of Truth. Here, Stone and Parker discuss the game, how they see the show ending one day, whether or not we'll ever get a Book of Mormon movie adaptation, and more!