Some simple game test. Try to get as far as possible in the trench run.
Fullscreen recommended, press F11. Or 'F' if your browser supports the Fullscreen API.
Note. You need a modern browser that supports WebGL for this to run the way it is intended.
For example. Google Chrome 9+ or Firefox 4+.
(If you are already using one of those browsers and it's still not running, it's possible that you
have old blacklisted GPU drivers. Try updating the drivers for your graphic card.
Or try to set a '--ignore-gpu-blacklist' switch for the browser.)