Reality Show is a genre of television programming that presents purportedly unscripted dramatic or humorous situations, documents actual events, and usually features ordinary people instead of professional actors, sometimes in a contest or other situation where a prize is awarded. The genre, which has existed in some form or another since the early years of television programming, exploded as a phenomenon around 1999–2000 with the success of such television series such as Big Brother and Survivor. Programmes in the reality television genre are commonly called reality shows and often are produced in a television series. Documentaries, television news and sports television are usually not classified as reality shows.
The genre covers a wide range of television programming formats, from game show or quiz shows which resemble the frantic, Japanese variety shows produced in Japan in the 1980s and 1990s (such as Gaki no tsukai), to surveillance- or voyeurism-focused productions such as Big Brother.
Reality television frequently portrays a modified and highly influenced form of reality, at times utilizing sensationalism to attract audience viewers and increase advertising revenue profits. Participants are often placed in exotic locations or abnormal situations, and are often persuaded to act in specific scripted ways by off-screen "story editors" or "segment television producers", with the portrayal of events and speech manipulated and contrived to create an illusion of reality through direction and post-production editing techniques.