Your browser might not...
I receive this message upon opening any of the games: "your browser might not support features required by this game or you have disabled them."
is enabled in your browser.
Then if you see the player count numbers next to each game:
when you see the message about support pages, press f5 to refresh the page. If still does not work, press CTRL+f5.
If that does not help either, clear your cache and restart your browser. If this is not enough then turn off your proxies
(tools/internet options/connection/lan settings/use proxy -uncheck), clear cache, restart browser.
If it still does not help, try to remove/disable Norton Internet Security
from your system...