It's really doubtful that they would set a game on Akavir for the same reasons they wouldn't set one on Atmora or Pyandonea, the elder scrolls have always been about Tamriel. On top of that, Akavir is clearly not very fleshed out. The in-game books are written by unreliable narrators years after the potentate or kamal invasion, which would have been the last points in tamriellic history when interaction with the akaviri would have been possible. Honestly I think the books like "Mysterious Akavir" are supposed to be like the in-universe version of like "The Travels of Marco Polo", they're imaginative and intriguing but not necessarily factual.