Module codes in brackets indicate implied codes either by earlier advertising or place in a series; some of these modules did not actually have codes printed on the cover.
A A—Aerie of the Slave Lords is a linked campaign of four
AD&D (1st Ed.) modules created for
Gen Con XIII and set in
Greyhawk. They can also form an extended campaign following T and followed by G and Q.
AC—ACcessory Modules is a series of accessory items for
D&D (Basic/Expert/Companion/Master), many of which included mini-adventures. They are generally associated with
Mystara albeit quite generic.
B B—Basic were designed for use with the
Dungeons & Dragons Basic set. Mostly they are independent adventures, set in Mystara.
C C—Competition modules for
AD&D (1st) are specially designed for competition play and come with a scoring system for player actions.
CA—City of Adventure for AD&D (1st) require the
Lankhmar: City of Adventure supplement to play.
CB—Conan the Barbarian modules for
AD&D (1st) tie in with the
Conan movies.
CM—CoMpanion is for use with
Dungeons & Dragons Companion Set (or
Rules Cyclopedia), and were set in
Mystara.
D D—Drow (or
Stoke-on-
Trent) limited edition module released at 1986
Stoke-on-Trent Garden Festival (UK).
T T—Temple of Elemental Evil set in Greyhawk. They can also form an extended campaign followed by A, G, and Q.
U U—Underwater a linked trilogy set in Greyhawk, published in the UK.
UK—United Kingdom a series of mostly independent adventures developed by the TSR UK office
W WG—World of Greyhawk was a series of stand-alone adventures set in Greyhawk for 1st edition except as noted. No modules were ever assigned codes WG1–WG3. WG1 was earmarked for
The Village of Hommlet (T1), and WG2 was earmarked for
The Temple of Elemental Evil (T1-4). WG3 was to be
Lost Caverns of Tsojcanth (S4), a loosely tied predecessor to WG4. WG7 was advertised during summer 1986 as
Shadowlords, a collaboration between Gary Gygax and Skip Williams. Gygax's lawsuit with TSR put
Shadowlords in limbo, and it was replaced with
Castle Greyhawk.
WGA—World of Greyhawk Adventure WGM—World of Greyhawk Mission WGQ—World of Greyhawk Quest WGR—World of Greyhawk Reference is a mix of adventures and background information.
WGS—World of Greyhawk Swords was originally intended as a trilogy. The planned third module became instead the
Greyhawk Wars boxed wargame.
X X—eXpert series was for use with
Dungeons & Dragons Expert Set except where noted and set in Mystara. ==Other modules==