1 vs 100 is a massively multiplayer online Xbox Live adaptation of the trivia game show of the same name. There are two versions of the game, referred to as 1 vs 100 Live and 1 vs 100 Extended Play. The Live version is hosted by Chris Cashman in North America and James McCourt in the UK, and places a single contestant as "The One" against a group of 100 that make up "The Mob", with the rest of the players making up "The Crowd". The One has the opportunity to win up to 10,000 Microsoft points, credited to their Xbox Live account, while the remaining members of The Mob divide up the winnings and each win an Xbox Live Arcade game if they are able to eliminate The One. The top three players in The Crowd win the XBLA game as well. The hosts and players are represented by Xbox Live Avatars. The game is free to all Xbox Live gold subscribers and is supported by advertising revenue. Seasons lasting 13 weeks will consist of various 30-minute extended play sessions followed by live two-hour episodes airing Tuesday and Friday. (as of Season 2) Five players have eliminated all 100 mob members, and of them four are eligible to receive the top prize of 10,000 Microsoft points. "Mutant Dog 123" did so during the Canadian-only beta when prizes were not actually issued. "Andy iz Magiik" won the UK edition on the evening of November 24, 2009. This was followed by "Sumimasen" who then won the UK edition on December 22, 2009. In the US, "Behind Times" won during the second season on the November 27, 2009 live show. Just before eight o'clock in the UK on January 15, 2010, "AndyGiff93" joined their number.

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