title: Slow motion in Sprite Kit iOS
body: <p>Does anyone have any good ideas of how to accomplish a slow motion effect in Sprite Kit for iOS? This would make all nodes including particle nodes move at 1/2 the speed and also make the particles move that 1/2 the speed.</p>
  
  <p>I can think of how to do this manually, but I wanted to get some more ideas before I start implementing.</p>