WMS has its roots in the amusement industry with both video games and pinball, under the Williams Electronics name, although is now under the Scientific Games umbrella after being acquired in 2014. The WMS brand is probably best known for Zeus and an incredibly popular wave of video slots quite cutting edge at the time and still solid and fun till this day: I'm not sure we're at the "nostalgia" period for slots, but WMS will certainly bring you back with many of their titles. WMS also innovated with the "Money Burst” line of slots which still can be found in most casinos, such as with the very popular Dean Martin's Wild Party game. Recently, their most successful brand is probably Willy Wonka, with every version unique in its own way!