>>112295
Mediafire's actually pretty good. I've tracked down links to old scanned doujinshi uploaded thirteen years ago, and they've never been taken down. I can't say the same about sites like MEGA.nz however.
Are these games only backed up on megaup? No torrents or uploads to any other site? If not Mediafire, at least one of those other bottlenecked pay-to-use hosters that don't force you to turn off your adblocker, like filegator or katfile