Why spend money on game triggers or game pads when you can use this application to do the same thing for you.

Control any in-game buttons with your hardware volume buttons

How to use?

1) Provide the 'draw over other apps' and 'accessibility' permissions
2) start the service
3) Drag/drop the '+' and '-' icons anywhere and in any screen
4) Press your hardware volume buttons to click on that part of the screen
5) Long press the hardware volume buttons to click continuously