Volume settings are individually set per game. There is not a setting to turn off the sound for all games at once due to the unique playing experience of each game.
The volume settings can be found within each game page.
- Select Games in the top navigation bar.
- Select All Games.
- Choose the game you wish to play on the All Games page.
- In the top right corner of the game page, select the Menu Icon.
- Select Sound Off.