[fallat]

I don't think there's anything recent here, they are just pre-computing a normal map which doubles as already "baking" a 3D-looking image in.

[jnpnj]

Was there anything of that sort made during the gbc era on this hardware ? I thought nobody ever attempted it before

[fallat]

Not exactly this, but many "3D games" were pre-computed scenes. The normal map is the novel bit of this demo.