The Curtain Falls singers - Duncan James, Simon Webbe, Antony Costa and Lee Ryan - will appear on the Channel 4 game show later this month, reported The Sun.
In the show, hosted by former Big Brother presenter Davina McCall, contestants are given a million pounds and must try to hold onto as much money as they can by gambling it on the answers to a series of questions.
Blue have chosen to donate their winnings to the Teenage Cancer Trust charity.
Previous celebrity contestants include Kirstie Allsopp and Phil Spencer, Harry Judd, Keith Lemon and Patsy Kensit.
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