Some Pogo games require the Java plugin. In that case, your best bet is to either use Internet Explorer or use the Extended Support Release of Firefox 52. More information on plugins and ESR: [[Why do Java, Silverlight, Adobe Acrobat and other plugins no longer work?]] <p><em>Windows Users:</em> [https://www.mozilla.org/firefox/organizations/all/ the ESR installer list], you'll notice at least two different downloads for Windows:</p> <ul> <li><strong>Windows</strong> installer is the <strong>standard version for Windows</strong> that runs on both 32-bit and 64-bit Windows Vista through 10 (and 32-bit XP), the best choice for most users</li> <li><strong>Windows 64-bit</strong> installer ONLY runs the Flash and Silverlight plugins, so that is not what you're looking for. (If someone reading this only needs Silverlight and is considering switching to 64-bit, there may be some extra file cleanup to do on your system. See: [[How to switch from 32-bit to 64-bit Firefox]])</li> </ul> <p>Success?</p>

And if you haven't installed Java on your system, see: https://www.java.com/en/download/manual.jsp