That was one of the highest-fidelity visual experiences I've had on the web. I know there's no more information being displayed than what's in the audio channel, but I feel like this sort of experience just wouldn't translate well to any current video encoding, even at enormous file sizes.
That could be an awesome previewer for .ild files (Laser Show stuff). The OpenLase and VectorBoy projects might like to hear from you.
It would may also be really nice for rendering the old vector games in MAME - I have a Cinematronics emulator that can run about 13 vector games too, mostly black and white.
Are you on Firefox by chance? I discovered this week that Firefox doesn't do ES6 on included <script> files unless you specify an explicit content type enabling it (which in turn breaks things on all other browsers).
Thanks for building this and for sharing!