Do you know how to add a background to your game/app in Unity?
Lets look how...
- Drag your image background to the "Hierarchy" window
- Select your new added background
- GO to Inspector
- Select "ADDITIONAL SETTINGS" - "SORTING LAYER"
- CLICK "ADD SOTRING LAYER"
- Add a layer with name "Background".
This shows you a "TAGS & LAYERS" menu where you must put your background layer on TOP of the list.