The standard homebrew tool used to install any .cia file onto your 3DS SD card.
This is likely what you are looking for if you searched for "Neo Geo 3DS CIA." This method creates a specific CIA file for one specific game . When installed, that game appears as its own icon on your 3DS home menu. neo geo 3ds cia
: Ensure your neogeo.zip contains the correct files (like sp-s2.sp1 or asia-s3.rom ) or games will fail to boot. The standard homebrew tool used to install any
How Neo Geo games run on 3DS