TimeScaler is the perfect tool for dealing with time scale in Unity. It’s multi-purpose nature creates possibilities such as:
-Adding slow-motion to your game
-Testing your scenes with blazing speed
-Adding Pause and Resume functionality to your game with ease
Simply drop the supplied prefab in your scene and use the square bracket keys to manipulate time scale at runtime. Check out the cool demo, which is included with the product for all versions of Unity!