McDonald's called its mascot-filled advertising world McDonaldland.
McDonaldland was a fictional setting used in McDonald's advertising from the early 1970s. It gave the company's characters a shared environment, allowing Ronald McDonald, the Hamburglar, Grimace, Mayor McCheese, and others to appear as part of one recognizable brand universe.
The setting helped McDonald's present restaurants as places connected with play, imagination, and family entertainment. Advertising often depicted colorful landscapes, unusual buildings, and food-themed characters rather than treating each mascot as an unrelated figure.
McDonaldland is sometimes confused with the name of a particular restaurant promotion or playground. It was primarily a fictional advertising world, although McDonald's restaurants also developed physical play areas and themed elements. The concept was an important example of branded storytelling in fast-food marketing.