Oh wow. Once I saw the smiling machine and empty progress bar, I went straight to NoScript and enabled your domain without a moment's hesitation — highly unusual for me. It's charming! I laughed out loud when I saw your screen-saver.

It's familiar and alien at the same time, like I'm seeing an alternate universe.

I made my own web-based Mac simulator some time ago: https://www.metamage.com/apps/maxim/

It was a way to become more familiar with CSS and JS (and indulge my classic Mac OS nostalgia), but my biggest takeaway was that the web wasn't a foundation I wanted to build complex structures on, and indirectly helped spur me to create Advanced Mac Substitute.