The American version of 1 vs. 100 is a game show that was broadcasted by NBC. As in other formats, a single player (the 1) goes up against 100 other contestants (the "Mob"). The 1 gains money for every Mob member eliminated, but loses all winnings with an incorrect answer at any point. The host is actor-comedian Bob Saget, and the top prize is US$1,000,000. The show premiered on NBC October 13, 2006 at 9:00 PM. On October 20, 2006, it was reported that NBC ordered 10 additional episodes of 1 vs. 100, citing the show's encouraging ratings performance. The show returned with these new episodes on December 1, 2006. At the television critics' winter meetings in Pasadena, California in January 2007, the network announced that 12 more episodes would be added. 1 vs. 100 aired on Fridays at 8:00 PM Eastern. On March 16, 2007, the show went on a temporary break in order to accommodate Identity, another NBC game show. The show returned to NBC with repeats of the series on May 25, 2007. In May, NBC announced that 1 vs. 100 would return for its second season in Fall 2007 with an eight episode run in the same time slot. The Singing Bee was originally scheduled to air after the initial run of 1 vs. 100, but its premiere was moved up to July to compete with Fox's new game show Don't Forget the Lyrics!. In July, NBC announced some fall scheduling updates that included The Singing Bee being moved to Tuesdays and Deal or No Deal being moved from Monday to Friday at 8PM, replacing 1 vs. 100. 1 vs. 100 returned for its second season on Friday January 4, 2008., with a new set and money ladder system of obtaining prize money. Also, a video screen is now displayed in the center of the mob area, where each question is displayed, as well as occasional pre-taped questions asked by celebrities. Several personalities, including Ross Mathews and Oscar the Grouch (of Sesame Street fame) are fixtures in the mob. On January 4, 2008, 1 vs. 100 recorded its first millionaire—21-year-old Jason Luna from San Diego, California. He won by defeating a mob of 100 women on a special battle-of-the-sexes episode. NBC's early presentation of its next season schedule on April 2, 2008, did not include the show. However, network executive Ben Silverman said that it might still return. On Tuesday, November 25, when NBC announced their Midseason schedule, 1 vs. 100 was not on it and a report for NBC said there are no plans to bring back 1 vs. 100, likely meaning the show has ended with a series finale, however, a report from Buzzerblog announced that with Endemol doing a TV adaptation of the game 20Q for GSN, 1 vs. 100 may come back.

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