The Discussion Thread - The 14th Annual Greatest Games Event

[S.Peelman]

Second hint for this one, the last of this batch to not have been guessed.

#24: This game got two expansion packs, but the second one in reality doesn't actually have anything to do with the main theme and historical era of the main game.
Hint 2: Though you could say this second expansion deals with the real-life predecessor of sorts of the main civilisation of the main game because that civilisation adapted a lot of their culture in reality.