Most of the heavy work has been done by others. I have mostly moved files around to make it work for Retropie, and edited a bunch of config files.
Here are a few places I picked images from. I have not used all of them.
- Shaders by ghogan42
- Libretro overlays: arcade-overlays
- Compilation by Mamehead
- Pack by UDb23
- Pack by Simbz33
- Pack by Derek Moore
- Pack by Sonkun
- Compilation for MotionBlue Raspberry Pi image
Usage of these packs in a commercial product are strictly forbidden.