I played a game of solitaire but as I was moving my kings onto their suit's stack at the end I triggered the joker easter egg and the entire deck got put back into one pile :(
Mentioning this got me to play a game of solitaire with it as well. The primitiveness of it felt oddly fun. An yes, I did the exact same thing when went to put my last king back.
Same! I think it is a solitaire Easter egg.
Yes, I was surprised that it was able to recognize that the game ended. But then I beleive it's not that hard, just look if there are 4 decks in order
touching the 4 kings sequentially triggers it
At some point after a few clicks text comes up which tells you this "secret", so yes, not much hidden easter egg ;)