Forgotten Realms
The "Campaign Set" (often referred to as the "Grey Box") was later released in 1987 as a boxed set of two source books ("Cyclopedia of the Realms" and "DM's Sourcebook of the Realms") and four large maps, designed by Greenwood in collaboration with author Jeff Grubb. The set introduced the campaign setting and explained how to use it, and reserved space on the map for SSI's Gold Box computer role-playing games set in the Forgotten Realms.
Waterdeep
The City of Waterdeep was an integral part of Ed Greenwood's house campaign, and is the most important city in the north of the Forgotten Realms setting. Game designer Ken Rolston called Waterdeep "the urban showpiece of the Forgotten Realms campaign". Jim Bambra called Waterdeep "an ideal setting for urban adventures", adding that Waterdeep "has a rich background which gives the city great character".