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).