The gaming machine division of the company named, WMS Gaming, began manufacturing slots in the mid-1990s. Along the way, it owned Bally Gaming (1988-1998), though this unit was spun off into its own company in 1998. In 2013, WMS Industries was purchased by Scientific Games, a leading producer of lottery software.
In 1974, the company which became WMS Industries was founded in Chicago under the name Williams Electronics. WMS Industries can trace its roots back to 1943 to an Illinois company named Williams Manufacturing Company, which was founded by a man named Harry Williams. WMS Slots is a subsidiary of WMS Industries. WMS Slots is a Chicago-based US firm which sells slot machines, video lottery terminals, and online casino software.
