[1] GURPS Wild Cards was written by John J. Miller, with a cover by Neal McPheeters, and was published by Steve Jackson Games in 1989 as a 128-page book.

However, this addresses one other problem with this worldbook; you need TWO other Steve Jackson Games products to play it, GURPS Basic and Supers.

If they are going to be using it as a separate world or a sourcebook for characters only, then the price is a little steep [...]; they would be better off to buy a villains book and an adventure supplement".

[5] He declared: "Recommended to super-hero fans in general and GURPS Supers game enthusiasts in particular, this exceptional supplement discusses the world of the Takisian wild card virus in fascinating detail, addressing many of the questions left unanswered in the Bantam Spectra novel series, such as exactly how the virus triggers human mutations, the history of the Shadow Fist Society, and the mysterious link between the Wild Cards phenomena and baseball.

Game statistics and background dossiers are given for the Great and Powerful Turtle, Sewer Jack, and dozens of other memorable characters, along with useful suggestions for creating player-designed mutants.