Thinking about this more, and I ran across an article at gamestudies.org from September of last year, which seeks to quantify the narrative density of a game by how many Polti premises one might recognize during play.
I’m not sure I find this convincing, because it suggests that narrative comes in discrete chunks. What about pacing, development, arc?
But I’ve only had a chance to scan through the article so far, and need to come back to it later.
Totally read that as “narrative dentistry.” Thought you should know.