Ben Shephard invites ex-footballer Chris Kamara, Countdown presenter Rachel Riley and former I'm a Celebrity winner Stacey Solomon to take part in the quiz show, in which the contestants answer questions to win turns on an arcade-style machine. Dropping tokens down a choice of four chutes, they hope to knock piles of them off a moving shelf - and the more they collect, the better their chances of collecting the £20,000 prize for their selected charity.