Games Workshop Ltd. produced between 1979 to 1985 four box sets of Dungeon Floor Plans for Role Playing Games to be used with 25mm miniatures.
The 1st box set was published in 1979 was endorsed by TSR for their Dungeons & Dragons game. In 1982 the 1st box set was re-published and then three expansion sets followed.
They was also compatable with the Dungeon Planner Series and the Dungeon Mapping Sheets which Games Workshop produced.
In 1986 they replaced the whole range with a new range of Dungeon Floor Plans (Series 2) for their Warhammer Fantasy Roleplay (1st Edition) game.