, but the file size is significantly smaller than a raw GDI. Most modern emulators (Flycast, Redream) and ODEs support .chd files. Mil-CD (Self-booting .CDI)

The "raw" full dump of a Dreamcast game. These are uncompressed and represent the 1:1 original experience but require more storage space. The "Better" Experience: GDI vs. CDI

: These are often "scrubbed" or "ripped" versions designed to fit on a 700MB CD-R. The Sacrifice

For years, compression meant losing intro videos, downsampling audio, or removing languages (so-called "Dummy" or "Ripped" releases). But today, thanks to modern codecs, smarter tools, and dedicated community work, highly compressed does not have to mean highly compromised . In fact, for many titles, compression is making the experience .

The Dreamcast’s GD-ROM held ~1GB, but most games fit on a 700MB CD-R after removing dummy data and optimizing audio.