It can’t be understated how much impact Wolfenstein 3D and Doom had. Commander Keen was already quite the tech demo, with scrolling on a PC without dedicated hardware; the most advanced platforming you’d see at the time would be Price of Persia.<p>Wolf 3D felt like a next gen tech demo out of time. It was great fun, it was violent, it looked unlike anything else (besides Ultima Underworld). Of course, that monumental achievement looks insignificant when compared with Doom, which single-handedly added stairs, different floors, multiplayer (!) and modding.<p>Most of us here work in software. To see software so casually come in, introduce never seen before concepts, it’s so impressive to me. I don’t think That I know of something having quite this impact in other aspects of software.