In that sense, all games are rendering in 2D, because screens are 2D. They just do it in a much more complicated way.
What I'm seeing in this demo is 3D in every sense, the code is basically a very simple 3D engine, and it requires knowledge of computer graphics to understand it, so the top-level commenter here asked a valid question.
What I'm seeing in this demo is 3D in every sense, the code is basically a very simple 3D engine, and it requires knowledge of computer graphics to understand it, so the top-level commenter here asked a valid question.