Assassin's Creed Shadows is bigger than Mirage but smaller than Valhalla because Ubisoft only needed to make a small slice of Japan: "We're talking about Origins big"
Don't expect Assassin's Creed Shadows to be as monstrously large as Valhalla, its art director suggests, because Ubisoft was able to focus on a specific slice of Japan in its next stealthy action RPG.