XODOSMetadata is all the images (box art, disc art, screenshots) and manuals associated with a game, so the launcher has all the assets necessary to provide its

XODOSMetadata is all the images (box art, disc art, screenshots) and manuals associated with a game, so the launcher has all the assets necessary to provide its interface. !DOSMetadata is dosbox configurations and .bat files for running games. It could be much smaller and stream those dynamically, but the creator is more focused on the archival and preservation than optimizing the download size.