It can’t not have local save data. It can delete it at exit, sure, but it needs it to load the game properly. Save game extraction might be more complex, but it is still sent to the local machine.

Unless it’s a streamed game of course.

Maybe Slimbook? I haven’t bought one yet but it’s definitely on my close watch.

https://slimbook.es/en/

You have to make it easy on yourself and just use a switch with default true for evens, then handle all the odd numbers in individual cases. There, cut your workload in half.

I believe it’s using a feature built-in directly in the filesystem.

I’m just curious if it’s possible to browse individual snapshots like in MacOS Time Machine and fetch individual files out.

Is this available as one single torrent?

Could you not?