Unleash the Gremlins!! (https://github.com/marmelab/gremlins.js)

unleash.js

(function() {
  var script = document.createElement('script');
  script.async = 1;
  script.src = 'https://raw.github.com/marmelab/gremlins.js/master/gremlins.min.js';
  document.getElementsByTagName('body')[0].appendChild(script);
  setTimeout(function() {
    gremlins.createHorde().unleash();
  }, 500)
})();