New File System: Sync Saves via Steam-Cloud

A simple solution would be to store the last used save slot in Local Storage, and make sure the one stored there is shown first.

Thanks for this, Ashley, that is simpler and more elegant. However, this solution only works on my PC. If I play on my Windows PC and then switch to Steam Deck, it won’t work because Local Storage is device-specific. So I need a way to determine the latest save if I use Steam Cloud to save game across devices.

I think you could argue that's minor enough to not worry about - there are only three save slots after all - but you could still support that by saving a fourth file to store the last used save slot, and Steam Cloud will sync that too.

I usually have a user settings save file with stuff like keybinds, volume settings etc. as that type of data should persist across different saves and across deleting saves. It would be a good place to store the last used save too.

Thanks for sharing, so to use Steam Cloud we can't use local storage, is the same true for simple save and load? When using save the save goes to the appdata folder, could that be ok?

You can save and load to a JSON string, which allows storing it the way you prefer/need. So that way it's easy to integrate built-in save and load with steam cloud.

You're welcome! And yes, that seems to be the way to do it. As fedca said, it works like this: you can save to a JSON string, and then you can save that JSON string to a file on the computer. That file will then be synced via cloud save.