The game Rimworld stores all its game configuration data in XML and uses XPath for modding and it's so incredibly good. It's a seriously underrated combination for enabling relatively stable local modifications of data. I don't know of any other game that does this, probably because XML has a reputation of being "obsolete" or whatever. But it's just such a robust system for this use case.

https://rimworldwiki.com/wiki/Modding_Tutorials/PatchOperati...