If you have already installed Java, but it is not working in Opera follow this guide to ensure Java is enabled in the browser.
1) Open the Opera Browser.
2) Type in 'opera://plugins' in the address bar and press 'Enter':
3) Look down the list of plugs for Java then click the Enable link:
4) Java is now enabled in the browser.
We hope you found this guide useful, however if you are still having any issues loading the game, please contact our support and we'll do our best to help!