[duckworthd]

Interesting effect. It does look very voxel-y. I'm not a video game developer at heart, so I can only guess how it was implemented. I doubt NeRF models were involved, but I wouldn't be surprised if some sort of voxel discretization was.

[promiseofbeans]

It seems like it might even just be some kind of shader

[vanderZwan]

If you think about how they created this from the POV of the game creation pipeline, then that probably is the way. If this is done by creating a shader on top of "plain old" 3D assets, then aside from the programmers/artists involved with creating that shader everyone else can go about their business with minimal retraining. There probably was a lot of content to create, to that optimization likely took priority over other methods of implementing this effect.