Can unity use narrat?
There isn’t any specific way, and no one has looked into it for now.
Narrat is web-based, so the games it outputs can be run on a web page. As far as I know there are Unity packages to run web pages like this or that. I don’t know which ones are good or how capable and performant they are, so don’t take this as an endorsement of any of them. It’s just from Googling.
I have no idea how doable that is, or how well it would perform though.
I see, thank you. I will try other way