Wheel of Fortune, perhaps? I doubt your son would be interested in the shopping segments (although you could of course try), so I would recommend nighttime episodes from 1987-94 (Seasons 5-11) and daytime episodes from July 1989 onward.
He may also like
Joker! Joker! Joker! (the child-only spinoff of
The Joker's Wild), although I would recommend avoiding any episodes taped from the GSN Kids' Zone block (as it would interrupt the show to make rather bad "jokes").
The 1969-74
Beat the Clock may be good, but I would recommend skipping the intros of the Gene Wood era as the inverted colors and close-ups of faces may scare or disturb him. The 1979-80 revival may also be good.
Talking with someone on the subject, I was given the recommendation of
Minute To Win It. I somewhat agree...if you remove the padding and irrelevancies.
I tried double dare but he didn't get into it yet.
If I may make a recommendation, avoid the early episodes and the Nick
Family era, as the former had not hit its stride yet and the latter made certain stunts too hard. I also suggest avoiding the
Celebrity Double Dare pilot from 1987 (far, far too dull and tedious) and
Double Dare 2000 (essentially the same reason).
Might try fun house..
You may also want to try
Finders Keepers, another similar show. I would recommend avoiding shows like
Slime Time and
Treasure Mall, however.