- Grimgar
- Mushoku Tensei
- Hunter x Hunter (2011)
- Frieren
- Fullmetal Alchemist Brotherhood
- Dorohedoro
- Dungeon Meshi
- Made in Abyss
- Ascendance of a Bookworm
- One Piece
From the most recent discussion about the best anime worldbuiiding, my choices continue to be Made in Abyss—as in I agree with the article in this case—and Violet Evergarden, but Witch Hat Atelier is getting to be a contender.
Frieren is great fun, but I actually think worldbuilding is a major weakness for the series. It’s all very surface-level and leaves the impression that the author hasn’t really thought things through.
It’s a slice of life series. For what its main focus is, it’s decent enough. It’s the “two-layer rule.” Why don’t vampires travel in the sewers? Sewer alligators. Why are there sewer alligators? Sewer alligator-taming vampire-hunting nuns. Why are the nuns there? To keep vampires from using the sewers. You answer two questions, and then loop it back into the main idea. It reinforces the main theme, and deters all but the most pedantic fans from pushing further.