I have Done Math Statistics all my life and I am getting somewhere between 1-20 to 1-40 depending on the day that is 4 to 8 times worse than the statistical proballity of 4-1, worse is when 3 heros show and I have used 10 gems for another slot and get no hits 4 times. Anther complete statistical Probality. It surely appears rigged. Same as Palace I have never gotten a Calvin card in 30 tries. It is clearly Rigged by the numbers, and everyone I have talked to has similar experiences.