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"
Joker (playing card) cards provide symbols for three jokers: red, black, and white. Many decks do not provide the Joker with a corner index symbol, of those that do, the most common is a solid five-pointed star or a star within a circle. It is also very common for decks to simply use a stylized "J" or the word "JOKER" in the corner. Like sports trading cards, jokers are often prized by collectors. Many unusual jokers are available for purchase online while other collectible jokers are catalogued online for viewing. Some European games have as many as six jokers per pack. Zwicker uses