From the video game side:
-NES and SNES, "American Gladiators": The NES version was too much unlike the TV show. The Wall in that game can bite me, by the way. As for the SNES version, it was much better, but the Eliminator was only worth 10 points to the winner, and the second place finisher got 5 points. This made most games forgone conclusions by the time you got to the event.
From the board game side:
-Tyco, "Jeopardy!" (1993, I think?): I thought they did a great job with the "Wheel of Fortune" game, but this...yeah. I will admit that I liked the mechanic of having everyone host a few categories instead of having to declare an MC, but having designated clues on certain cards be Daily Doubles meant that some games would have none, and, if that was the category you were hosting, well, better hope they miss!
Anthony