I'd like to preface this by saying that reviewing two Arthurian AARs within the first round of reviews was a coincidence. Regardless, Omentide is an AAR for Age of Wonders 4 that follows Morgana Pendragon (aka Morgan Le Fey). It is a narrative, but gameplay is mentioned. Admittedly, the introduction says that it'll be a combination of history book, narrative, and gameplay, so we might see more gameplay elements later on.
Elements of the game are mentioned in occasional interlude updates. So far, there's been a faction review for Avalon (Morgana's faction), which described how that was set up in the game a bit and notes that the game has a faction creator. There are also lore interludes, which inform the reader about necessary details of the game's... world? (multiverse, actually). These lore details serve as reminders of the game's worldbuilding, which I enjoy, particularly since I don't have AoW4.
Of course, the main part of this AAR is the narrative, which follows Morgan Le Fay. It begins in an unusual manner that raises a lot more questions than it answers, and not all of these questions have been answered yet, which I can admit is a good way to lure the reader into the story. It follows the exploits of Morgan Le Fey after she has awakened from a (probable) illusion and formed a faction/kingdom. I still can't tell how much of the illusion that the prologue began with was real since Morgan occasionally quotes from stuff that was... after her time (*cough, cough* Macbeth *cough, cough*). The sense of mystery is not helped by the fact that there's still a lot of things that Morgan doesn't know, and she's our main perspective so far...
All in all, I do enjoy this AAR and patiently await the next update. I also like the idea of adding a soundtrack to an AAR, even if I haven't listened to it yet. Of course, I'm also interested in AARs with Arthurian elements in general, which might explain why I'm enjoying this so much. I can recommend that you check it out.