WMS Gaming is a manufacturer of slot machines, video lottery terminals and software to help casinos manage their gaming operations. It also offers online and mobile games. WMS was originally a subsidiary of WMS Industries, which became a wholly owned subsidiary of Scientific Games Corporation in 2013.
WMS entered the reel-spinning slot machine market in 1994, and in 1996, it introduced its first hit casino slot machine, Reel 'em In, a "multi-line, multi-coin secondary bonus" video slot machine. It followed this with a number of similar games like Jackpot Party, Boom and Filthy Rich. By 2001, it introduced its Monopoly-themed series of "participation" slots. Since then, WMS Gaming has continued to obtain licenses to manufacture gaming machines using several additional famous brands. The company continues to sell gaming machines and to market its participation games.