Has won the most money on a game show?
10,000,000 On the power of ten :)
Contestants on actual game shows do actually win money. However many people can confuse a game show with a online site. That is not a game show and on a Game show the only money you can lose is the amount you could have won. The creators of network television game shows obtain money for the show from selling commericials and that allows them to provide prizes to contestants. I am pretty sure they do.
$1000 is the lowest amount a contestant can win on Wheel of Fortune. However it is a long running show that replaced a show with the same name that had daytime shows and the prizes in the beginning were much smaller than now. In the beginning of the daytime show the minimum dollar value on the wheel was $25