The Crystal Maze was a game show, produced by Chatsworth Television February 1990, and shown on Channel 4 and Also 10 August 1995. There was one set each year, with the initial four chain presented by Richard O'Brien and the final 2 from Ed Tudor-Pole. Each show was one hour . The show was initially intended to be described as a British remake of the French programme Fort Boyard. That the unavailability of the set of this French show led manufacturer Malcolm Heyworth to reinvent the show, using zones as a means. The show is put in"The Crystal Maze", which features four separate"zones" put in many periods of space and time. A group of six contestants get involved in a set of challenges so as to win"time crystals". Each crystal provides the team five moments of period inside"The Crystal Dome", the centre piece of this maze at which the contestants get involved in their final battle. The maze cost #250,000 to develop and has been the size of 2 football pitches. That the show was probably the most watched on Channel 4, regularly attracting between 6 and 4 million audiences. In 2006 and again in 2010, the show was voted"biggest UK game show of all time" by subscribers of UKGameshows.com. This website explains the programme as"a highly-ambitious, risky show that repaid handsomely."