Doom on Oscilloscope

Related: Quake on an oscilloscope https://www.youtube.com/watch?v=GIdiHh6mW58

2017 (322 points, 27 comments) https://news.ycombinator.com/item?id=15659172

2014 (859 points, 70 comments) https://news.ycombinator.com/item?id=8810857