The Hackett hosted version had a different format, where three individual contestants appeared on the show, one at a time, to be interviewed by Hackett, and then played a True or False quiz of five questions in a particular category. The first correct answer to a question earned $25, and the amount would double with each subsequent correct answer. After the fifth question, the contestant could opt to try to correctly answer a sixth question. If correct, his/her earnings were tripled; incorrect, the earnings were cut in half. Maximum winnings--$1200!
The secret word was worth $100, and I don't think anyone ever won it!
The contestant with the most money won, came back on stage at the end of the show, to meet "Leonard," the prize duck, where they would stop a rotating device, causing a plastic egg to drop out, which concealed the name of a nice bonus prize to go with their cash winnings.
Original YBYL announcer George Fenneman appeared one time as a guest, and played the game for a member of the audience. I believe there is a photo of his appearance on the show in the first edition EOTVGS.