Ahh I thought you were talking about an installed (possibly 3D) game that had an online component. So then your problem is probably related to your web browser. You could try repairing your browser, installing the latest Macromedia Flash/Shockwave, and/or the latest Sun Java virtual machine. I don't know what your browser is though (guessing Internet Explorer, but perhaps you don't have the latest version), and exactly what type of games Slingo offers (Flash/Shockwave/Java/Other?).