This game supports 5.1 channel linear PCM surround sound. In order to experience surround sound, select (System Settings) from the Wii U Menu, choose the TV item, then change the audio-output type to Surround.
This is from the manual in Lego City Undercover... The second note they had in the manual was this.........In order to experience surround sound with this software, you will need to connect your wii U console wiht a reciever tha has a built-in HDMI port using a High Speed HDMI Cable. For more information about how to connect....
My second note. This is a great game for all ages. I played it for 7 hours straight yesterday, ended up having to plug in my control pad, but damn it is addictive. From bout 8pm to 2am.