Ovinomancer
No flips for you!
It's fair to pull out narration or storytelling as components of literary endeavour, perhaps as necessary but not sufficient. However, I think your focus here on the format sidesteps the question a bit -- would this be "literary" in a different format? Would tge sane oresentations in a play-by-email or play-by-post or play-by-chat format change you evaluation because it's now a written work? IE, is the main differentiator the format of the work?It seems like they are narrative endeavors or storytelling endeavors. I don't necessarily think that the word "literary" applies when we are talking more about story-craft or fiction-craft than the crafting of literature, even if we apply the technical sense of pertaining to written words.
If so, then it would be interesting to note this. And interesting to follow this into written adventures ir home-brew planning as potentially literary endeavors.
FWIW, I see RPGs have having literary potential, but not inantely requiring it. As with most artistic efforts, it's hard to define. Hence, in a thread premised on discussing whether RPGs meets an artistic classification, there is strong disagreement.