User blog comment:EdoJPV/How can i access the files of JD games?/@comment-26573805-20191009152312

Well, you can download an ISO of the game if it's the Wii or Xbox 360 version, or other dumps like Wii U dumps or PKG dumps in the case of the PS4 version and then extract them however you would extract game dumps for that platform. For JDU server files, you need to have a JDU subscription on Wii U, Switch, or PS4 (PS4 only works for JD2018 and prior) and proxy your console with Charles proxy server to extract their files. For JDN server files and files for unreleased content idk.

And I'm not going to link any illegal dumps of any JD games here, you are going to need to dump the game yourself or find the dumps on your own.