Dragon was the launching point for a number of rules, spells, monsters, magic items, and other ideas that were incorporated into later official products of the Dungeons & Dragons game. A prime example is the Forgotten Realms campaign setting, which first became known through a series of Dragon articles in the 1980s by its creator Ed Greenwood. It subsequently went on to become one of the primary campaign "worlds" for official Dungeons and Dragons products, starting in 1987.