It technically still exists in the game properties -> installed files tab, but it doesn't really work. The backup files you get require you to be online to meaningfully restore and will trigger a patch to the latest game version.
Practically speaking it's better to just make a copy of the game install directory manually, gives you a better chance of things working (even though most games require some kind of external tooling for that).
What file format does the Steam backup use?
For current exports, it's some custom .csm/.csd file combo. Not sure if there's any tools for working with it, seems like it'd be more annoying than just using a normal archive format either way.
That's bad. I guess if I want to back up my Steam games, it's going to be tarballs.
It technically still exists in the game properties -> installed files tab, but it doesn't really work. The backup files you get require you to be online to meaningfully restore and will trigger a patch to the latest game version.
Practically speaking it's better to just make a copy of the game install directory manually, gives you a better chance of things working (even though most games require some kind of external tooling for that).
What file format does the Steam backup use?
For current exports, it's some custom .csm/.csd file combo. Not sure if there's any tools for working with it, seems like it'd be more annoying than just using a normal archive format either way.
That's bad. I guess if I want to back up my Steam games, it's going to be tarballs.