Many ROMsets are bloated with "clones" (e.g., Street Fighter II released 14 times for different regions). The 2003 Plus set often prioritizes the "Parent" ROM (usually the World or USA version). This saves storage space on your RetroPie or Anbernic device.
: It takes up the most disk space because shared files are duplicated across multiple zip archives. Split Sets mame 2003 plus romset archive
