coarse shoal
While fooling around with tropical smoothie stacking, i rigged a space joker and a copy-paste at different points, both for convenience.
Eventually, the game started to crash when i tried to play a hand, and eventually isolated it to where using a single additional tropical smoothie crashed.
Selling the space joker fixed it, and later the game started to crash when I used code cards (which selling the copy-paste fixed), so I can only assume it's due to RNG being called with extreme odds (the odds were at double-e level by then).
I'd bet on this crash happening in vanilla, too, but good luck getting over 1000 oops all 6s in order to get any odds that high
prime burrow