This is a test of 3D graphics using 2D sprites.
I think i know, He made the model then in blender did the option where animations are just tons of photos, then he made it where they would cycle through when using wasd. and the ground is just a huge plane with trees and rocks that regenerate new world, like minecraft when playing on an infinite world, except in stead of dirt blocks and villages, its a flat surface with trees and rocks on it.
Yeah, because I noticed the plane got pixelated.