darkness, murder and the underworld; Tezcatlipoca, god of sun, moon, night, scheming, betrayals and lightning; and Quetzalcoatl, god of air, birds and snakes. However, this area of the Flanaess was not explored further in any subsequent TSR adventures or source material, and these three gods would remain isolated from the main pantheon for almost twenty years. Non-player characters of Greyhawk Also included in the March 1983 issue of Dragon was an article detailing four unique Greyhawk characters. The first two quasi-deities—Heward and Keoghtom—had been created by Gygax as non-player characters (NPCs). The third, Murlynd, was a character that had been created by Gygax's childhood friend Don Kaye before Kaye's untimely death in 1975. The fourth, a hero-deity named Kelanen, was developed to illustrate the "principle of advancement of power". TSR Greyhawk adventures published after the folio edition Of the ten adventures set in Greyhawk published by TSR before the folio edition, all but one had been written by Gygax. However, the new availability of information about Gygax's campaign world and TSR's desire to make it central to Dungeons & Dragons encouraged many new writers to set their adventures in Greyhawk. This, combined with the fact that Gygax was increasingly involved in other areas of the company, meant that of the seventeen Greyhawk adventures published in the two years after the folio edition, only four were written or co-written by Gygax: S3 Expedition to the Barrier Peaks (Gary Gygax, 1980) A1 Slave Pits of the Undercity (David Cook, 1980) A2 Secret of the Slavers' Stockade ( Harold Johnson & Tom Moldvay, 1981) A3 Assault on the Aerie of the Slave Lords (Allen Hammack, 1981 ) A4 In the Dungeons of the Slave Lords (Lawrence Schick, 1981) Q1 Queen of the Demonweb Pits (David C. Sutherland III & Gary Gygax, 1980) C1 The Hidden Shrine of Tamoachan (Harold Johnson & Jeff R. Leason, 1980) C2 The Ghost Tower of Inverness (Allen Hammack, 1980) I1 Dwellers of the Forbidden City (David Cook, 1981) L1 The Secret of Bone Hill (Lenard Lakofka, 1981) U1 Sinister Secret of Saltmarsh (Dave Browne & Don Turnbull, 1981) U2 Danger at Dunwater (Dave Browne & Don Turnbull, 1982) N1 Against the Cult of the Reptile God (Douglas Niles, 1982) WG4 The Forgotten Temple of Tharizdun (Gary Gygax, 1982) S4 Lost Caverns of Tsojcanth (Gary Gygax, 1982) Originally published as Lost Caverns of Tsojconth in 1976 U3 The Final