If you jumped through all the hoops to get sixty second shooter running, and it still didn't run, it could be because I provided the wrong link: I linked to the dev channel of Chrome, not the beta channel. The link is fixed now.
It could also be becuase you're running Windows XP, which doesn't do GL stuff unless you force it. If you're brave, you can pass --ignore-gpu-blacklist into the Chrome command line and WebGL and sixty second shooter may start working. You may also get a blue screen of death.