Game Space is the game launcher on Oppo smartphones that helps us provide a better gaming experience by allowing you to hide notifications, automatically reject incoming calls, or use other useful features.

Game Space can be enabled or disabled in the preferences.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Game Space
Step 3:  Enable or Disable  Game Assistant
  1. Open the Settings
  2. Tap on Game Space
  3. Enable or Disable Game Assistant

Oppo Instructions