I completely agree with both Talk About and Caesars Challenge. Fun, easily accessible word games that I'm surprised have never been revived since their original airings.
There were three that came to my mind besides these:
Treasure Hunt: No, not much game there, but it was just plain fun to watch, both for the skits and the contestant reactions, and I'm shocked that the show hasn't been revived since 1981. I mean, this show was on for a combined 5 years, yet I don't know *anyone* outside of fandom that even remembers it.
Bumper Stumpers: You won't see this show on anyone's Top 10 (or likely even 25), but I have always liked trying to solve the creative license plate puzzles, and Al DuBois really seemed to enjoy his time doing the show. Easy to get involved with, fun to watch, and anyone who I've shown an episode of the show to really likes it.
Jackpot: I was just talking about this show a few days ago as one of my favorites because of the creative riddles, the massive amount of contestants playing, and never knowing when someone was going to have a chance at that big Super Jackpot. Another member of that WFLD game show block in 1989-1990 (I think The Last Word was the other) that I'm sad has never been revived nor really reran other than the Dark Period and that one-off during Viewers Choice.
Anthony