The four remaining contestants are whittled down to one who will face the Vortex in an attempt to win £1,000,000.
More contestants battle it out for a place in the second part of the final week's editions of the series.
The final four contestants battle it out to win the £500,000 jackpot.
More contestants attempt to correctly guess the outcomes to challenges - Red or Black? - with a little help from Britain's Got Talent stars Jonathan & Charlotte and Only Boys Aloud.
Nelly Furtado performs in the studio and the final two contestants attempt to win the £500,000 jackpot.
More contestants battle it out to win a place in the evening's second edition, deciding a choice between Red or Black in a series of challenges.
The final four contestants battle it out to face the Vortex with a little help from Ronan Keating.
More contestants attempt to correctly guess Red or Black to a series of challenges and win a big cash prize.
One final contestant attempts to beat The Vortex and win the jackpot prize.
Eight more contestants attempt to correctly guess Red or Black in this edition. Helping them in the challenges are Rizzle Kicks, Ashley and Pudsey from Britain's Got Talent and snooker stars Judd Trump and Neil Robertson.
One lucky contestant has made it to The Vortex - but will they win the jackpot?
In this edition another eight contestants compete for a place in the second episode of the evening. Little Mix, Darren Bent, Bobby Zamora,Derek Hough, Peta Murgatroyd, classical guitarist Milos, Sally Miller and Lisa Whitmore take part in the contests.
One finalist faces The Vortex in the final of the first week of the second series.
Eight contestants attempt to correctly guess Red or Black to a series of challenges. Special guests helping in the challenges in this edition include Jonathan Ross, Carol Vorderman, Reuben DeJong, Mike O'Hearn, Javier Jarquin and Rick Smith Jr.