We introduce minigames in MMO release and as you notice on some actions you can choose 'minigames' option.
Here is a small introduction video to this functionality:
Black screen in minigames frame. Most likely flash player installation performed with issues. Please follow this link to download Flash Player for Opera and Chromium based applications – PPAPI and install it into your system https://fpdownload.macromedia.com/pub/labs/flashruntimes/flashplayer/install_flash_player_ppapi.exe