I've been trying to brainstorm every game show that has ever aired in the United States involving the use of playing cards.
This list will not include pilot episodes such as Jim McKrell's "Split Decision" or Jim Peck's "Suit Yourself" nor will it include game shows that may use playing cards as part of an entire show (e.g. Hit Me / Card Game on Price is Right or any Vegas themed type deal done by Monty Hall during the 1976 season of Let's Make A Deal). Obviously this list also will not include international versions of game shows involving playing cards...the one that springs most readily to my mind is Bruce Forsyth's "Play Your Cards Right".
Here's what I came up with.
Pay Cards (Syndicated, 1968-69)
Gambit (CBS, 1972-76)
Card Sharks (NBC, 1978-81; CBS 1986-89, Syndicated 1987-88?, 2001 (ugh) and the Joel McHale ABC version from I believe 2019 - 2021.
Super Pay Cards (Syndicated, 1981-82). I know this version was taped in Canada but I'm not certain if the show aired at all in the United States during its initial run. I myself do not recall ever seeing it until the advent of the internet.
Las Vegas Gambit (NBC, 1980-81)
Catch 21 (GSN, 2008-2011 & 2019-2020)
I'd love to flesh out more about these game shows but first I wanted to check to see if there are any other playing card game shows I overlooked.