NeoBox vs NeoCD-Wii

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.

NeoCD-Wii is a free, open-source Nintendo Wii emulator for Neo-Geo CD games and a port of the NEO-CD REDUX GameCube emulator. Installation involves extracting the archive to an SD card or USB drive and placing game files in folders there. USB 2 support requires IOS 202. The emulator also needs a NeoGeo CD/Z BIOS named NeoCD.bin in a BIOS folder at the SD card root. Game audio belongs in each title’s MP3 directory as Trackxx.mp3 files; 44.1 or 48 kHz and 128 kbps or better are recommended. Version 0.5 lists interlaced and progressive video modes, a filter toggle, configurable Wiimote and Classic Controller buttons, saved settings, and page-based browsing. The project supports the internal SD slot and is libfat compatible. Some games may still show black screens or graphics bugs, and DVD support was untested. The repository lists GPL-3.0 licensing.