As is obvious from the chapter headings, the writing is slightly whimsical, and the style of the book is reinforced by quotes from the supposed illuminati.

GURPS Illuminati built on the Illuminati card game, in its turn inspired by Robert Shea and Robert Anton Wilson's The Illuminatus!

[4] GURPS Illuminati won the 1992 Origins Award for best roleplaying supplement.

[1] Craig Sheeley reviewed GURPS Illuminati for Challenge #66.

[5] Sheeley comments in his conclusion: "GURPS Illuminati is one of this season's bestsellers for Steve Jackson Games, outselling even their masterpiece, Hacker.