31-year-old bricklayer Nathan Hageman won the seven-figure sum on tonight's live show after correctly predicting that a giant roulette wheel would land on red.
After landing the life-changing prize, Hageman repeatedly asked hosts Ant and Dec: "Is this real, thank you, is this happening?
"I didn't think I would get through, I couldn't believe it. I have never had any luck, apart from the family I've got. It means everything to me; I can change mine and my family's life."
Hageman beat out former Big Brother contestant Angel McKenzie and six other players in the Red or Black? premiere, which sees participants attempt to gamble their way to big money on a series of 50/50 decisions.
Hageman revealed prior to his win that he had been persuaded to enter the show by his ex-girlfriend, and had completely forgotten about his application until he was invited on.
Red or Black? will air for six more nights on ITV1, returning tomorrow at 6.45pm.
Watch the trailer for Red or Black? below: