Keeping in mind this would only be an option and regular dice rolls would be the standard. This comes from an older version of PlayCatan. Basically, instead of randomly rolling 1/36 every time the software chooses one of those 36 cards and when the 36 cards are gone it resets. However, 6 cards are removed so there is a little bit of randomness. This results in a more normal distribution of rolls and no games where "11" is rolled 15 times resulting in a silly game.