If you are unable to load a game, make sure that your browser is configured properly and you have the latest version of the Macromedia Flash Player installed:
Where's the Contact Customer Care button? With so many improvements to Messenger since the version you're using (lots more features and reliability), we figured you're ready to move up. So get your upgrade and with the new version, rest assured if you have questions, you’ll find that friendly button on its help pages.