Unlike standard RetroArch cores (like NES or SNES), OpenBOR does not use standard "Load Content" for individual files. You generally point the core to the game folder.
Alternative Method (Windows/Linux/macOS):
You can also try "Load Content", navigate to your roms/OpenBOR folder, select a specific game folder, and select Open. However, using Start Core is the most reliable method for OpenBOR. retroarch openbor core install
Some OpenBOR games have crackling audio. Fix: Unlike standard RetroArch cores (like NES or SNES),
If you are a creator, you can test your own OpenBOR builds directly in RetroArch without repackaging. Some OpenBOR games have crackling audio
When finished, pack the folder into a .PAK using the packer.exe included with the OpenBOR tools.