Bullseye '72 comes to mind. Also Professor Price.
I have sympathy for the "weird" ideas from the show's early years. It's easy to look back and point out stupid ideas with the benefit of hindsight, but at the time production was still figuring out what Price even
was, and what it wasn't. If production had made different decisions about what worked and what didn't work, the show would have evolved accordingly.
A two-player pricing game had never been tried, until it had. At the time, they didn't
know if it would work or not, but they took the chance anyways. If it had worked, maybe more two-player games would have followed. Maybe the show would have evolved to allow for them. The showcase showdown would look entirely different. Who knows.
A game with a punchboard or pachinko board could have sucked, and led to the death of "gimmicky" luck-based games. Telephone Game could have been charming and memorable and gotten three spinoff games. We don't know. We have a good idea of what works now cause we have the benefit of hindsight, but I'm grateful production was willing to experiment (and quickly acknowledge when ideas weren't working).