title: How to perform Roll-out in MCTS in Complex Games
body: <p>Okay I basically understand How MCTS works with node selection etc. What I don't understand is the random roll-out phase.
  Is it correct that I am randomly simulating future game steps till it ends in win or loss?
  Isn't the roll-out taking very long with more Complex Games with many states and possible actions and unknown enemy Moves?
  If you randomly roll-out enemy moves till you reach the end of the game, is it not just as good to just return win or loss randomly?
  I would be delighted if someone could explain the roll-out phase in a simple example like a 3 or 4 step game.</p>
  
  <p>Thanks in advance.</p>