Nice job. I think the OG of Win98 JS recreation from about a decade ago (which even has a working version of Space Cadet in it) is still around as well!

https://github.com/1j01/98

https://98.js.org

One interesting thing about it is that when you navigate to a site in the 98JS copy of IE - it actually serves you an older wayback mirror copy of the original site (try yahoo.com for example).