I made something like with a similar aesthetic a few years ago but themed after win95 (which seems to be hardly unique these days). But it had a secret gimmick where aspects of it were implemented with in terms of itself (mostly, file icons could be edited within app and you could see them update on the desktop).
I had grand plans for it but they never eventuated.
I got to 3, then opened one of his YouTube videos in the "bottom" browser. Nothing seemed to happen then the audio started playing and everything slowed to a crawl. After closing the tab the audio kept playing and my entire PC became unusable until I rebooted. I'm not even mad, I'm impressed!