NeoCD/SDLx Unleashed vs NeoRAGEx

NeoCD/SDLx Unleashed is a free Neo Geo CD emulator for the original Xbox. It runs many original Neo Geo CD games and reads real discs in ISO9660 format. The emulator does not support bin/cue or iso/mp3 images and requires an uncompressed 512 KB system BIOS named neocd.bin; the download page says a BIOS copy is permitted only for owners of an original Neo Geo CD console. It supports one or two players, full CDDA audio, region selection and memory cards. Display modes include 480p and 720p, selected according to dashboard settings. Video filters are AdvanceMame2x, Simple2x, SuperSai2x, SuperEagle and Scanline. Source code is released, and the download is a 448.6 KB ZIP attachment with no Digiex registration required. The page reports miscellaneous sound and timing issues and provides the program without warranty. The listed platform is the original Xbox. AES and MVS emulation, plus other related SNK arcade systems, are not supported.

NeoRAGEx 5.4e is a free Neo·Geo emulator for playing arcade games on Windows 10 and 11. Its portable edition can run without installation from a USB drive. Display options include CRT effects such as scanlines, curvature, bloom, and vignette, as well as pixel sharp mode. Fullscreen supports integer scaling and 4:3 or widescreen aspect ratios. Xbox, PlayStation, arcade stick, and generic controllers are supported, with automatic detection and button remapping. Save states, rewind, and screenshots are included. The listed minimum requirements are 64-bit Windows 10 or 11, a dual-core 2.0 GHz CPU, 2 GB RAM, and a DirectX 9-or-newer compatible GPU. NeoRAGEx does not include games or BIOS; it requires a neogeo.zip BIOS file and users’ own ROM files. The download page publishes SHA-256 and MD5 checksums for the installer, and the site links to setup, configuration, and troubleshooting guides. The project describes itself as independent and unaffiliated with or backed by SNK.