DOKTOR, TURN OFF MY CRINGE INHIBITORS

They are somewhat nuanced and ideologically motivated bad guys, I'll give you that. And it does make the anime interesting, especially compared to your standard isekai/VRMMO anime

It's almost like the main cast is supposed to be the bad guys

Bring the popcorn and let them fight it out

I cast Mend Buttcrack

But they also have the Unseen University

saves bookmark inconspicuously

Elder Scrolls Online has a first person mode, for what it's worth

Yeah, unfortunately, I can't think of the same type of game in true first person 3D. Maybe, Satisfactory (for building vast structures and automating) or 7 Days to Die (for the survival aspect).

Unrelated, but have you by chance played the Talos Principle games? Those are my favourite first person puzzle games, on the level of Portal and Portal 2.

Now that is a mood and a half

From my experience, Valheim is pretty close to Terraria in the general feeling of progression and exploration. While being a 3D game, albeit with a third-person camera

Minecraft is primarily a sandbox game with RPG elements, and Terraria is primarily an RPG with sandbox elements