Given Flash's atrocious performance profile, I'm surprised and impressed that this works at all. That being said, it chews an entire core on my computer to render the game at about 20fps, and the audio is nearly a half-second latent. Another way of looking at this is that Flash bytecode on a Core i7 today has caught up to half of where native bytecode on a Pentium I was 14 years ago.
Talk about nostalgia. I remember being 10 or 11 and playing Quake. I thought it was just absolutely amazing. I had also just gotten into the internet. The curiosity I had back then still exists, which is a good thing. The same feeling that we're just getting started still exists, even though things are so much more advanced.