Reality television is a genre of television programming that documents purportedly unscripted real-life situations, often starring ordinary people rather than professional actors. Reality television emerged as a distinct genre in the early 1990s with shows such as The Real World, then achieved prominence in the early 2000s with the success of the series Survivor, Idol, and Big Brother, all of which became global franchises. Reality television shows tend to be interspersed with "confessionals", short interview segments in which cast members reflect on or provide context for the events being depicted on-screen; this is most commonly seen in American reality television. Competition-based reality shows typically feature the gradual elimination of participants, either by a panel of judges, by the viewership of the show, or by the contestants themselves.
Documentaries, television news, sports television, talk shows, and traditional game shows are generally not classified as reality television. Some genres of television programming that predate the reality television boom have been retroactively classified as reality television, including hidden camera shows, talent-search shows, documentary series about ordinary people, high-concept game shows, home improvement shows, and court shows featuring real-life cases and issues.