I'm not sure how to do this other that downloading them via the stores on modded consoles and somehow transferring them to PC's to preserve them. I have no idea how to program or even go about this but I'm an archivist working proactively. I've started a subreddit at https://www.reddit.com/r/PreserveThe138/ if anyone is interested. There's a lot of stuff going to blink into nothing soon and I'm hoping there's something we can do about this. I'll be reaching out to other SocMed avenues soon.