We started doing the "Wheel of Torture" last year for the first time with our Tempt Your Fate game. It was fun and added a little more interest, as everyone could gather round the wheel and wait to see what the fate might be instead of them just popping the balloon and hearing it read off immediately. There are a few different ways people play the game, so there's no hard and fast rules, but typically, the fate isn't secret. Some people use a few "secret" fates thrown in, such as "Do <insert fate> for 10 minutes but don't tell anyone why". Our fates are all on the wheel, including our "Minute To Win It" fates, where the person has an opportunity to reverse their fate by successfully completing the challenge. So, the "surprise" of TYF isn't the fate, per se, it's whether you've gotten a "good" fate (prize) or a "bad fate".