TimeFactor is a property which can be used to make time run slower or faster. By default TimeFactor is set to 1, meaning time runs regularly. A value of 2 will make time run twice as fast. TimeFactor can modify the rate at which Currenttime increases and also multiplies the SecondDifference value.
The following code will make time run twice as fast:
TimeManager.TimeFactor = 2;
The following code will make the game run at half the speed (slow motion):
TimeManager.TimeFactor = .5f;