I play a lot of Cribbage. 29 is the maximum amount of points you can get in a single hand. While I’ve gotten it once, there is only a 1 in 216,580 probability of actually getting it. Plus, if you get it in an official Cribbage tournament, the American Cribbage Congress will pay you 100$.
I’ve never even seen it! I got the set up once but didn’t get my cut.