Multiple files per download

I would want to know if there is a way to attach more than one file per download. I need to provide a download of a pack of pictures but I need to show then individually.

I notice that the upload allowed to upload multiple files, all the files are saved in the folder but only the last one is linked to the download item. In the database, the field that has the download files reference is a serialized array and it can contains more the one file, but only store the last one.