Patches are often included to force VGA output for games that didn't originally support it.
: An open-source toolkit on GitHub that provides a reliable way to burn and verify .cdi files on non-Windows systems. Guide: Extracting And Recompiling CDI Images - Page 3 dreamcast cdi collection verified
: To fit the 700MB limit, some collections feature downsampled audio/video or removed "padding" data. Scene Group Lineage Patches are often included to force VGA output