Amazon.com: Knack 2 - PlayStation 4 : Sony Interactive Entertai: Video Games
More ways to play Knack: Introducing two-player co-op and mobile app Knack's Quest – PlayStation.Blog
KNACK 2 Walkthrough Part 1 (PS4) Co-op - No Commentary - YouTube
PlayStation UK on Twitter: "Knack 2 is out now! Buddy up and enjoy the whole adventure together in couch co-op with another DUALSHOCK 4. https://t.co/vQsXEKasjq" / Twitter
E3 2017: Knack 2 lets you subject a friend to play along
Knack 2 Preview - Gamereactor
Here's how Knack's two-player co-op works | Engadget