JavaScript/HTML 5 Gaming?

cjcela writes "Lately I've seen some HTML 5/JavaScript games popping up on the web. Most of them lack sound, and are not polished, but little by little this is changing. As an example, check Galactic Plunder. While it is only a single-level proof of concept, it is one of the first arcade non-Flash games that I've found playable. Do you know of other comparable or better pure JavaScript games?"