What an excellent example of designing for the medium instead of trying to make the medium do something it's not good at! Your whole approach shows a real love, like a delicate respectfulness, that I think characterises early games and is less apparent as the systems get better (though I am sure it is still there).
Surface-Stable Fractal Dithering
https://runevision.com/tech/dither3d/
https://www.youtube.com/watch?v=HPqGaIMVuLs
https://www.lexaloffle.com/bbs/?tid=3804