SUPER addicting, probably worse than crack. Unsure due to lack of crack of use.
HOWEVER,
The only way I was able to win the game was by making a stone build. You heard me right.
I stacked a few dozen stone cards and a stone chip stacking joker and literally just threw enough stones to win.
Maybe crack use was the stones we threw along the way.

Update: I am now sweaty and on the edge of my seat doing mental math like I am watching a raid on Osama Bin Ladens compound.