which one did he win in?
on "Tic-Tac-Dough."
American game show winnings records
 Teddy Nadler of "The $64,000 Challenge", the highest-scoring contestant of the 1950s era, was not surpassed until 1980, when Thom McKee won $312,700 on "Tic-Tac-Dough."
who has won the most money on a game show Thom McKee
wiki:16839040
American game show winnings records [SEP] Introduction
, the top three winners in American game show history all earned the majority of their winnings from the quiz show "Jeopardy!", which has aired since 1984 and has had no hard earnings limit since 2003. Ken Jennings is the highest-earning American game show contestant of all time, having accumulated a total of $5,223,414. He took the record back from Brad Rutter as the highest-earning contestant (a record Rutter had held since 2014) by virtue of his victory on January 14, 2020 in the "Jeopardy! The Greatest of All Time" tournament.