How to display text “Modded By XYZ” on android app

As you can seen most of the games and apps, when u open them, its shows you the modded by xyz (some name), how can i display same. Please help
Answer #1
It depends on what game. Most often they replace one of the images that load on startup with their own image.
Answer #2
It depends on what game. Most often they replace one of the images that load on startup with their own image.
How, please give instruction ?