In Dead Rising 2 for the PS3, Xbox 360, and PC, you can play a friendly game of strip poker with some survivors you’ve rescued.
Around day three you’ll get a side mission called “Ante Up”. This mission takes place in the Safe House, where there is a poker table setup in one of the store rooms. You’re not playing for money, you’re only playing for clothing. If you beat your opponents, they’ll be nude covering themselves with their hands, which is always amusing.
If you saved Jack in the “Welcome to the Family” mission, then he can be in your game and you can win the Knights Helmet from him.