title: How do I add a restart function to a game in Unity?
body: <p>I have followed and completed a Unity <a href="https://unity3d.com/learn/tutorials/projects/roll-ball-tutorial" rel="nofollow noreferrer">tutorial</a> however once the tutorial is said and done, there was no function mentioned to restart the game.</p>
  
  <p>Other than closing the application and re-opening, how would I go about adding something like this in?</p>