is it possible to embed

Hi there,
you can generate an embed code in your account on Riddle.com that you can use on virtually any kind of site that you own.
The plugin is essentially a shortcut to using our embed code. Adding Riddle content to sites that are not powered by WordPress is fairly easy and we have some documentation on how to do that here: https://www.riddle.com/blog/embed-online-quizzes-site/

Hope this helps.