There’s this Youtube video (SHOCKING, I know) about “The Only Impossible Seed in Balatro*.” (49 minutes) The asterisk is their way of saying, “It’s not really impossible, but that wouldn’t have nearly as much impact as a title.” Yeah, unfair.
The video is interesting, if you sift through it, for an interesting fact: a bug in Balatro’s seed-based randomness generation code sometimes produces a situation where one of its many number sources will get bugged, and produce the same number over and over again. This is the cause of the now-infamous seeds where, if you’re playing the Erratic Deck, all your cards end up as the 10 of Spades, as well as seeds that affect which cards you draw, and one where all the Jokers generated are Rare. The video is most interesting, I think, for describing that mechanism, and that is why it is offered here:
To get to the meat, it turns out there is GitHub out there that explains much about these bugged seeds, here.