The addition of a "Horde Mode" has become something of a standard after Gears of War 2 and the entire goal of Saints Row the Third is to do everything everybody else does, but bigger and crazier. Enter Whored Mode.
It takes the typical mode you're now all very familiar with and does it up Saints Row style with the first wave featuring whores (obviously), followed by literal question marks and that's how things START. Needless to say, Saints Row the Third is going to make a huge impact this winter.