Which ones do you have in mind?
What do you have in mind?
I've played plenty of D&D games where players describe their PCs clothes, sometimes their friends and family, etc. Is this what you mean?
Do you mean the GM asking the player's questions and incorporating their answers into what the GM says next? Then concrete examples would be helpful. In Apocalypse World, this is a method (i) of elucidating player goals/aspirations for their PCs, and (ii) giving effect to PC memory and knowledge. It is not the player "making changes outside of their PC".
Dungeon World is a PbtA game that allows players to create the lore for the world on the fly. It's not for me, but I can dig up a link to some actual play podcasts if you want.
The game I listened to had a player describe what was in a tower the group was investigating, it was absolutely the player making changes outside of their PC.