CHD (Compressed Hunks of Data) files are a container format used to store disc images (including Sega Saturn discs) in a compressed, lossless form commonly used by emulation software such as MAME and other retro emulators. Sega Saturn ROMs can be distributed either as single-bin/cue disc images or converted into CHD to save space and improve performance in some emulators.
The Sega Saturn’s library is a treasure trove of innovative 2D and early 3D design—a "what if" moment in gaming history. For years, that treasure was locked behind bloated files and finicky emulation. The CHD format did not just compress data; it liberated it. By drastically reducing storage requirements while preserving every last bit of copy protection and audio data, CHD has become the gold standard for Saturn preservation. It ensures that decades from now, players will still be able to experience Sonic Jam , Saturn Bomberman , and Virtua Fighter 2 not as compromised, buggy downloads, but as perfect, playable slices of 32-bit history. In the end, the story of the Sega Saturn and CHD is a testament to how smart engineering—born from the emulation community—can rescue even the most complicated legacy. sega saturn roms chd
If you are reading this, you likely already know that collecting Saturn games is an expensive nightmare. Panzer Dragoon Saga costs more than a used car. Radiant Silvergun is locked behind a paywall that would make a hedge fund manager blush. CHD (Compressed Hunks of Data) files are a