<Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> Whose Line Is It Anyway? is a short - form improvisational comedy show originating as a popular British radio programme, before moving to British television in 1988 . Following the conclusion of the British run in 1999, ABC began airing an American version, which ran until 2007 and was later revived by The CW in 2013 . </P> <P> Each version of the show consists of a panel of four performers who create characters, scenes, and songs on the spot, in the style of short - form improvisation games, many taken from theatresports . Topics for the games are based on either audience suggestions or predetermined prompts from the host . Both the British and the American shows ostensibly take the form of a game show with the host arbitrarily assigning points and likewise choosing a winner at the end of each episode . However, the show lacks the true stakes and competition of a game show (by design). The "game show" format is simply part of the comedy . </P> <Ul> <Li> Whose Line Is It Anyway? (radio series), the British radio series which inspired the television series </Li> <Li> Whose Line Is It Anyway? (UK TV series), which was broadcast from 1988--1999 </Li> <Li> Whose Line Is It Anyway? (U.S. TV series), which has aired from 1998--2007 and again since 2013 </Li> <Li> Whose Line Is It Anyway? Australia, which aired from 2016--2017 </Li> </Ul>

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