Download RetroArch from the Google Play Store. It is free and open-source.
Before we get into the "how," let's talk about the "why." The Neo Geo CD was a home console version of SNK’s arcade hardware. While it was expensive and had notoriously slow loading times, it had one massive advantage over the cartridge-based AES system: Cost and Audio. neo geo cd emulator android
The Neo Geo CD’s biggest real-world flaw was its 1x speed CD drive. Loading King of Fighters ‘97 could take 90 seconds between fights. Emulation solves this. Download RetroArch from the Google Play Store
When you run a Neo Geo CD emulator on Android, you gain "Instant Loading" or "Fast Disc Access." By placing the game files on your phone’s internal UFS storage (or a microSD card), the emulator reads the data at thousands of times the original speed. Loading screens that took 30 seconds now last less than one second. While it was expensive and had notoriously slow
Pro Tip: Convert your ISO/MP3/CUE files into a single CHD (Compressed Hunks of Data) file. This reduces file size by roughly 40% without losing speed, allowing you to store the entire Neo Geo CD library (over 90 games) on a 128GB SD card.