If you have a collection of physical Saturn discs or existing files, you can convert them using a tool called
A CHD file is a compressed disc image format designed specifically for arcade and optical disc media. Unlike generic compression formats like ZIP or RAR, CHD is a "raw" compression format. This means emulators can read the data directly from the compressed file in real-time without needing to extract it to your hard drive first. sega saturn chd roms
CHD uses lossless compression, often reducing a 600MB game down to 100-300MB, depending on the data type (audio tracks compress better than video). If you have a collection of physical Saturn
At its core, a CHD file is a digital container that holds a complete CD-ROM image in a compressed state. Unlike traditional formats like BIN/CUE, which can contain multiple files for a single game, a CHD file consolidates everything into a single, compressed container. CHD uses lossless compression, often reducing a 600MB
Understanding ROMs for Sega Saturn CHD: A Practical Guide - geiger-wolf
: Most top-tier emulators and "cores" now support CHD natively, meaning you don't have to unzip anything to play. Best Emulators for CHD