title: Besides Impact, what JavaScript game engines exist?
body: <p>Pls don't include subjective thoughts, or moderators will close this question like they closed our last one (http://stackoverflow.com/questions/7668076/impact-vs-other-javascript-game-engines).</p>
  
  <p>We need game engines that can run on iOS devices and ideally Android devices as well.</p>
  
  <p>Thanks!</p>