Games Workshop Group (often abbreviated as GW) is a British manufacturer of miniature wargames, based in Nottingham, England. Its best-known products are Warhammer Age of Sigmar and Warhammer 40,000. Founded in 1975 by John Peake, Ian Livingstone, and Steve Jackson, Games Workshop was originally a manufacturer of wooden boards for games including backgammon, mancala, nine men's morris, and Go. It later became an importer of the U.S. role-playing game Dungeons & Dragons, and then a publisher of wargames and role-playing games in its own right, expanding from a bedroom mail-order company in the process. It expanded into Europe, the US, Canada, and Australia in the early 1990s. All U.K.-based operations were relocated to the current headquarters in Lenton, Nottingham in 1997.