I am on windows and when I get past the loading bar it shows this "Cannot read property 'getParameter' of undefined"
Strange, Firefox not working might be a sign that something’s wrong. My guess is that you have an embedded GPU that does not work well with WebGL. Maybe check other WebGL games or if people with the same hardware experience similar WebGL problems.
EDIT: The game is still available for download, so feel free to try the standalone version.