armed_troop

That's why I mentioned the use of binary diffs for old versions of Minecraft  without the latest version, you can't produce the older versions. Creating binary diffs of zip archives may be a bit of work though, since each zip has to be unpacked and the individual files have to be diffed. As for Squad hosting them  I know that's on their side, but S3 storage costs are not very high. It would take up development resources though on their end to make the site support downloading old versions, and I'm sure it's more important for Squad to work on the game than silly stuff like this. At least right now it's easy enough to port mods to newer versions, which makes things somewhat easier.

Yes, please do! I'm definitely interested. In addition, it would be nice to have a way to play the newer versions (post-0.13.3). For Minecraft, some people did this by supplying binary diffs against the current, but this won't work so well with KSP. Anyone have any ideas on how to do it without violating Squad's copyright? Ideally, they could just have a list of older versions on the downloads page