West End Games
' post-apocalyptic role-playing game of dark humor, Paranoia features a Big Brother-esque computer, mutants, secret societies, and high character mortality rates.
In 2004, a couple of the original designers bought back the rights to it and remade the game into a new edition called Paranoia XP, published by Mongoose Publishing
A 2004 edition of Paranoia, redesigned principally by Allan Varney, which "re-emphasizes the darkly humorous tone of the first edition, while retaining the fast-paced, rules light approach of the second".
In XP, Paranoia has been updated for the 21st century with features like mobile telephony, pervasive computing, brain-spam, RFIDs, identity theft, and corporate privatization. It also features rules for three play styles (Classic, Straight, and Zap).