Before diving into the Spanish revision, let’s decode the container. A .CHD file is not a ROM in the traditional sense. Developed by the MAME (Multiple Arcade Machine Emulator) project, CHD is a lossless compression format specifically designed for CD-based games. Unlike BIN/CUE or ISO files, a CHD:
Unlike later "Master Collection" releases that often default to English or Japanese audio with subtitles, this original PS1 revision contains the legendary Spanish dub. Translation: Metal Gear Solid -Spain- -Disc 1- -Rev 1-.chd