The Challenge: Untold History

Cast members from "The Real World" and "Road Rules" compete for cash and prizes and end up taking a small '90s cable show to new heights.

Twenty seasons in, the evolution of "The Challenge" transforms it into a reality competition soap opera that thrives on cinematic themes, intense games, and a wealth of cast history.

While forming friendships, rivalries, and romances, badass reality competitors from around the globe face off in cutthroat challenges and brutal eliminations, with the chance to earn their share of a $1,000,000 prize.

Competitors, producers and fans discuss some of "The Challenge's" most impressive participants, from OG champions to notorious pot-stirrers to social strategists.

Seeing if love can survive in a cutthroat game; couples found love over the seasons, and though some were short-lived, went wrong or never aired, a few have stood the test of time and flourish.

Jaw-dropping moments are what makes "The Challenge" so unpredictable; as the series has evolved, its greatest surprises have only become more life-changing.