Fort Boyard: Ultimate Challenge is a children's game show, based on the French show Fort Boyard, which aired on both CITV and Disney XD. The first two series were a British-American co-production with Disney XD, airing from 17 October 2011 to 23 March 2012 in the United States. In the United Kingdom, it premiered on New Year's Day 2012, with later series solely produced for the United Kingdom. The series ended on 17 December 2014 after five series.