GxGeo vs NeoBox

GxGeo is a free Wii-family emulator for Neo-Geo AES and MVS games. It is a port of the open-source GnGeo emulator and is licensed under GPLv2. Supported platforms listed are Wii, vWii mode on Wii U, and Wii Mini. The project is described as an early version with some bugs. ROMs larger than 25 MB do not work because of memory limitations, although some ROMs can be modified to run. Installation requires extracting the ZIP to an SD card and placing zipped ROMs and BIOS files in /sd/gxgeo/roms. The instructions require 000-lo.lo and sfix.sfx, and describe country and system BIOS files; uni-bios.rom can substitute for a country or system file. Play is supported through a GameCube controller or Wii Remote. A GameCube controller in port 1 takes priority for player 1, while the Wiimote controls player 2. Downloads are linked through Google Code, Homebrew Browser, and Open Shop Channel. Open Shop Channel lists version 20101119.

NeoBox is a native macOS app with a built-in Geolith Neo Geo emulator; users provide their own ROMs and BIOS files. It accepts MAME-format ZIPs, scans ROM folders, organizes recognized games with bundled metadata, and watches folders for additions. The maker says metadata covers 158 games, including MVS and AES titles through KOF 2003. NeoBox provides timestamped save states, numbered slots, per-game memory cards, and F12 screenshots. Display options include an optional Metal-rendered CRT shader, Auto 4:3, and pixel-perfect integer scaling. Xbox, PlayStation, Switch Pro, and MFi controllers work over USB or Bluetooth, with keyboard input also available. Users can select external MAME instead of Geolith; the maker says the library, save states, and bindings carry over. NeoBox requires macOS 14 or later and is native for Apple Silicon. The Mac App Store listing describes it as signed and notarized. The NeoBox: Neo Geo Player plan costs $14.99 as a one-time purchase.