Are shards different?

[Lyth]

Oh god we go the 12th and we see the area intro text pop up and it just says “New York”

The twelfth was rejoined with the Second Umbral Calamity. But it's a really interesting idea.

The Second, Third, Fifth, Sixth, Seventh, Tenth, and Twelvth shards have all been rejoined. The Thirteenth was effectively destroyed. Setting aside the First, we still have yet to explore the Fourth, Eighth, Ninth, and Eleventh. If even one or two of these are 'full-sized' worlds on the same scale as Etheirys, you'd have more than enough landmass to write future expansions for years and years to come. It would be fun if, on the eventual final resolution of the story down the line, they revealed that one of those shards was just Earth, with its' playerbase being long lost Azem reflections. You could hand over a PS5 controller. 'Take it, we fight as one!'