Install Java or Check your Java installation
All Rubl.com games require Java allowed in your browser.
To quickly diagnose if Java is working correctly, check
HERE. If you see "Your Java Is Ok" text, your java installed correctly
You may see a "Security Warning" window - "Do you want to run this application?". Click on "I accept...", then on "Run" button.
If you do not see this text, you need to do something with your java installation. It is not difficult.
Your browser may not support Java or supports an outdated Java version.
It is possible that Java Support is either not installed or turned off.
Go to the Java Download page at www.java.com.
Click the "Download" button, then Click the "Begin Download" button.
You may encounter a warning message that instructs you on "Installing the ActiveX Control." Please, allow the installation. If you see a Security Warning for installing the J2SE Runtime Environment, click Install.
Then accept license agreement - click on "I accept..." and "Next". Select "Typical" installation and click "Next".
When the installation is complete, you may be asked to restart your computer now or later. Choose to restart it now.
If no restart required just close and re-open your browser after Java installation.
Check the Java test one more time.
Go to this page and diagnose
your Java again.
Java plug-in needs permission
If you start a game, the gaming window is open and you see a message within Chrome that says Java(TM) needs your permission to run, you will need to respond to the Chrome options in order to run plug-ins on the page.
Look for the blocked plug-in icon in the Chrome address bar. Clicking on the icon will display Plug-ins were blocked on this page and plug-in options Click "Always allow plug-ins on [name of site]"
to allow plug-ins (including Java) to run on all this site's pages.
Article about Chrome and Java.
Java Help Center
If you still have troubles or question about Java please visit Java Help Center" on java.com -
there are plenty of questions and answers about Java out there