"Game tools" is a useful function that is linked in the navigation bar. with them it is possible to display a menu during the game, where notifications and media sounds can be switched on/off. also, depending on the model, the game graphics, mostly only the frame rate, can be adjusted.

Android 9 | LG UX 9.0
Step 1:  Open the  Settings
Step 2:  Tap on  General
Step 3:  Tap on  Gaming
Step 4:  Enable or Disable  Game tools
  1. Open the Settings
  2. Tap on General
  3. Tap on Gaming
  4. Enable or Disable Game tools

LG Instructions