EDIT: I couldn’t stop myself. Giving Jellyvision the license to make Millionaire games was a masterstroke and it is a shame and a half that no other developer sought to use them to make other home games.
It's funny... as I read the first part of your post, my immediate thought was
You Don't Know Jack, but that's just an example of a well-executed computer game, not a game show home game.
But I disagree fairly strongly with you about
Millionaire. The adaptation of Fastest Finger was clever, but enough other aspects missed the mark that it didn't feel enough like playing the show. (I acknowledge they were probably under a tight deadline to capitalize on the show's popularity.) The scripted Phone-a-Friends weren't great -- supposedly a savvy player was supposed to be able to discern from what the friend said whether their answer could be trusted, but I was never able to pick up on any tells. The much larger problem, though, was that the questions were simply organized as first tier questions, middle tier questions, and final tier questions. As we all know, there's a big difference between a $2,000 question and a $32,000 question, but in the computer game, the difficulty of those middle tier questions bounced all over the place as the game randomly drew from the pile.