title: Send message and notification to Google Home like Disney
body: <p>I made a Google Action to play "Betrayal at House on the Hill" 
  In a nutshell:</p>
  
  <ul>
  <li>People ask to play a game</li>
  <li>Then decide to move from room A to room B to room C</li>
  <li>They can perform actions throught a WebChat</li>
  </ul>
  
  <p>The problem is that Google works on a request/response mechanism</p>
  
  <ul>
  <li>There is no multiple message like "You see something" "Then you see an other thing"</li>
  <li>There is no "notification" features when something happend "soouuund" so I made a kludge workaround with a PiZero that cast audio to the Home (works for only one user with an horrible beep)</li>
  </ul>
  
  <p><strong>Questions:</strong></p>
  
  <ul>
  <li>Is there a better way to perform multiple messages</li>
  <li>Is there a better way to send notification</li>
  </ul>
  
  <p><a href="https://www.youtube.com/watch?v=NH7HI2BW6aE" rel="nofollow noreferrer">Disney did something like that</a> but I can't figure how they stream audio and push multiple events. Is there some kind of API ETA ?</p>
  
  <p>A <a href="https://blog.encausse.net/2018/11/01/halloween-vocal-assistant/" rel="nofollow noreferrer">little blog post on my experiement here</a>.</p>