Wild Cards "Wild Cards" was adapted into a role-playing game format by Steve Jackson Games. Written by John J. Miller and published in June 1989, the sourcebook used GURPS Supers rules and contained descriptions of sixty of the characters. A supplement titled "Aces Abroad", written by Kevin Andrew Murphy, was released in 1991. Green Ronin Publishing published "Wild Cards Campaign Setting", written by Miller, for its "Mutants & Masterminds" RPG in August 2008; the game debuted at Gen Con that year. Two supplements were released: an adventure anthology titled "All-in" and a character book titled "Aces & Jokers". A four-issue "Wild Cards"
Zener cards the experimenter picks up a card in a shuffled pack, observes the symbol, and records the answer of the person being tested, who would guess which of the five designs is on the card. The experimenter continues until all the cards in the pack are tested. Poor shuffling methods can make the order of cards in the deck easier to predict and the cards could have been inadvertently or intentionally marked and manipulated. In his experiments, J. B. Rhine first shuffled the cards by hand but later decided to use a machine for shuffling. In his book, "The New Apocrypha",