Image:1vs100logo.JPG|right|thumb|US logo of ''1 vs. 100''.
"'1 vs. 100"' is a game show created by Endemol that is aired in several countries. The game pits one person against 100 others for a chance to win a large cash prize. The game first aired in the Netherlands as "'Eén Tegen Honderd"', sponsored by the National Postcode Lottery.
General Format
In all versions of ''1 vs. 100'', one player is selected to play the game as ''The One'' against 100 other people, collectively known as ''The Mob'' (or what "Mob" translates to in the local language, although the UK version doesn't call its group of 100 "The Mob"). Depending on the format of the game, the player can be selected randomly from the Mob, or selected independently. To win the game outright, the One must eliminate all 100 members of the Mob by answering questions correctly.
After having the opportunity to select a difficulty level or a category in some versions, a multiple-choice question with three options is revealed (on the American, Australian, Bulgarian, Philippine, French, Hungarian, Italian, Israeli, Korean, and Turkish versions, the player is given only the question, with no opportunity to select a difficulty and a category). The Mob is given a short amount of time (:15 on the US show, :06 for other versions, such as Australia) to lock in their answer before The One is given the opportunity to answer the question. If the One is correct, all Mob members that answered the question incorrectly are eliminated from further play, bringing the lone contestant closer to winning the game. The amount of money in the contestant's bank also increases by an amount dependent on the number of mob members eliminated in that question. If the contestant eliminates all 100 mob members, he or she claims all the money in the bank or a fixed top prize.
However, if the One is incorrect, the game ends and he or she leaves with nothing. In some versions, the remaining members of the Mob split the losing contestant's winnings.
The One can select from a limited number of "helps", "escapes" or "dodges" depending on the version; escapes or dodges exempt the player from having to answer the question, but part of the bank must be forfeited (except in France, see below). Alternatively, a player can obtain more information on the mob's answers by using one of the "helps". In some versions of the game, the contestant is given the opportunity to take the amount in the bank and leave the game in between questions.