There's also DepotDownloader as a more generic tool that lets you download anything from steam, including past version. https://github.com/SteamRE/DepotDownload

There's also DepotDownloader as a more generic tool that lets you download anything from steam, including past version. https://github.com/SteamRE/DepotDownloader https://github.com/SteamRE/DepotDownloader. Being more generic, it probably can't archive your whole library in one go. I use this to download historical versions of a game to help with reverse engineering to archive dialogue trees from a game https://dialogue.destiny.report https://dialogue.destiny.report