started from the beginning of the chain. When the rules changed, the returning champion had won one game and $100,000 in his appearance on the final show under the old prize structure. Instead of being "grandfathered" under the old prize structure, he played and won his second game for $250,000 (the next amount after $100,000), and played but lost his third game for $500,000. Under both prize structures, champions remained on the show until being defeated, as in the original version. However, unlike the original show, new champions' winnings were not deducted from the totals of dethroned ones. Contestant selection During the first six episodes, the audience chose the winner's next opponent. The audience would be presented with two potential challengers to face the current champion, and the audience would vote for an opponent using keypads. The person who received the higher vote played against the champion; the other person would be one of the two potential challengers to be voted upon for the next game. In the first episode, there were three potential opponents to face the champion. After the sixth episode, the process was changed to a random selection. At the beginning of the show, six potential challengers would be introduced, and would be selected randomly from that group for each new game. People who had not been selected by the end of the show were not guaranteed to return on the following show, although some did appear on the show multiple times before being selected to play. Bonus round: Perfect 21 The champion was asked a maximum of six true/false questions in a single category, starting at one point and increasing by one per question, to a maximum value of six. After any correct answer, the champion could stop playing and receive $10,000 per point; an incorrect answer ended the round and forfeited this money. Correctly answering all six questions won the top prize of $210,000. Big winners Under the first payoff structure, Rahim Oberholtzer was the biggest winner, collecting $1,120,000 (at the time, the all-time game show winnings record) over four victories, three of which were the result of his opponents having struck out. David Legler won $1,765,000 over six wins with the new payout structure, and was the top winner in American game show history until 2001; he is now the eighth-highest winner. Broadcast history Twenty-One was originally conceived by host Jack Barry and producing