Ensure you also have the parent ROM (usually named jojo.7z or jojoba.7z ) in the same folder. Refresh your emulator's game list to find the game.
Place the CPGEMSONE.7z file into your emulator's ROMS folder. CPGEMSONE.7z
: A high-compression archive format used by programs like 7-Zip to bundle ROM data efficiently. Why is this file used? Ensure you also have the parent ROM (usually named jojo