Copy the fbalpha2012_neogeo_libretro.cia file to the cias folder on your 3DS SD card.
If you are interested in exploring further, I can help you find: Specific, reputable guides on setting up RetroArch. A list of the best-performing Neo Geo games on the 3DS. How to use to install the files.
On a New Nintendo 3DS/2DS , games like Metal Slug and King of Fighters run at a locked 60 frames per second. On an Old Nintendo 3DS , heavier titles may experience audio stutter or frame drops. 2. NeoDS (The Legacy DS Option) neo geo 3ds cia
To get Neo Geo games onto your HOME menu as CIAs, you will need to utilize a PC-based injection tool. The most popular and reliable tool for this process is or specialized arcade injection scripts. Prerequisites A computer running Windows.
: Most users use the Ultimate 3DS VC Injector or similar PC-based "Forwarder" tools. These take your Neo Geo ROM (usually in .zip format) and wrap it inside a CIA file. Copy the fbalpha2012_neogeo_libretro
This is an area where clarity is required. The tools and processes described—creating .CIA forwarders, installing RetroArch, and dumping your game cartridges—operate in a legally grey area.
To make your games feel truly authentic, tweak these options within your CIA emulator's settings menu: How to use to install the files
Assuming you have a with custom firmware (CFW) installed, here is the general workflow: