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.
Rob Heinsoo
Heinsoo joined Wizards of the Coast (WotC) as a member of the "D&D Worlds" team, with his main focus being the third-edition version of "Forgotten Realms". With WotC, Heinsoo was involved with a number of "Dungeons & Dragons" game products. Other Forgotten Realms works include the sourcebook "Monsters of Faerûn". He also helped write the third edition "Forgotten Realms Campaign Setting", which reached the top 50 of the non-fiction bestsellers in Canada in 2002 and won an Origins Award for best roleplaying supplement of 2001. He is the designer of "Three-Dragon Ante", a card game.