To install Neo Geo software in CIA format, your 3DS must have custom firmware (CFW) such as . The Ultimate 3DS Modding and Homebrew Guide
Originally a DS homebrew, NeoDS is often used via TWLoader or similar DS-mode managers on 3DS. It is known for running at full speed even on older 3DS models, but it requires converting standard ROMs into a specific .neo format using a PC tool called NeoDSConvert.exe . Installation Guide neo geo 3ds cia
The most common method involves installing a RetroArch CIA that includes cores like FinalBurn Neo (FBNeo) . This offers high accuracy and features like shaders, though it may require a "New" 3DS model for optimal performance in more demanding titles. To install Neo Geo software in CIA format,
