change your site from HTML to PHP, if its not already done so. also u can use .htaccess to protect such folders from being donloaded. if the games are in flash, and u have created them, then protect them from import using some crazy numbers that you can think of.
ALSO DO NOT USE .TK DOMAIN, THEY ARE VERY ANNOYING AND PEOPLE CAN FIGURE OUT YOUR ACTUAL URL. not sure if i can tell you how, i may require admins permission.
also remmeber that your x10hosting account URL and the cpanel id are the same, so make sure you have a good password for your cpanel