The Three Brothers
Forgotten Realms is a fictional alternate world that has been published as a campaign setting for Advanced Dungeon & Dragons (AD&D), Dungeons & Dragons (D&D) 3rd Edition and Dungeons & Dragons (D&D) 4th Edition, by TSR, Inc. and Wizards of the Coast (WotC).
It was originally created in 1967 as a setting for short stories by Ed Greenwood but it has since become the most enduring campaign setting for D&D.
The primary focus of the setting is the continent of Faerûn, part of the world of Abeir-Toril, an Earth-like planet with certain obvious influences and similarities from the real world and fantasy fiction.
The Forgotten Realms setting owes a lot of its popularity to the many novels using the setting, like R. A. Salvatore’s works detailing the life and adventures of the famed drow Drizzt Do’Urden, as well as computer games like Pool of Radiance, Baldur’s Gate, Icewind Dale and Neverwinter Nights.