what are these shows?
A game show is a type of radio, television, or internet program in which contestants, television personalities or celebrities, sometimes as part of a team, play a game which involves answering trivia questions or solving puzzles, usually for prizes.
American game show winnings records
A game show is a type of radio, television, or internet program in which contestants, television personalities or celebrities, sometimes as part of a team, play a game which involves answering trivia questions or solving puzzles, usually for prizes. 
who won the most money on a gameshow Ken Jennings is the highest-earning American game show contestant of all time, having accumulated a total of $5,223,414.
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American game show winnings records [SEP] Introduction
A game show is a type of radio, television, or internet program in which contestants, television personalities or celebrities, sometimes as part of a team, play a game which involves answering trivia questions or solving puzzles, usually for prizes. Game shows are usually distinguishable from reality television competition shows, in which the competition consumes an entire season of episodes; in a game show, prizes can typically be won in a single match (in some cases, particularly in the ones that offer record-setting prizes, contestants can play multiple matches and accumulate a larger total). Beginning with the first five-figure and six-figure game show jackpots in the mid-1950s, a succession of contestants on various quiz shows of the era each set records.