Compare WMS slots

At, you can compare and play dozens of WMS slots for free.

WMS (short for Williams) Industries have been synonymous with all kinds of arcade games in the US since the 1940s. Founded in 1943 by Harry E Williams, WMS had been through a few turbulent times until they were finally gobbled up – like their fellow slots manufacturers Bally – by Scientific Games.

WMS still make plenty of real-world arcade games, including gambling consoles and of course, plenty of both real-world and online slots. There are plenty of online slot machines available at multiple casinos across the web, all with WMS's familiar interface, and many with unique features that make them fun to play!

We're constantly reviewing the latest WMS slots, so be sure to come back!

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Learn here about WMS slots

WMS can trace their gaming routes all the way back to 1943, when Harry Williams founded the Williams Manufacturing Company in Chicago, Illinois. Harry designed a fortune-telling machine, two electro-mechanical machines and two pinball machines called Flat-Top and Laura. Initially Harry did not have the capital to make machines from scratch, so instead he re-conditioned second-hand machines.

Harry actually pioneered the 'tilt' mechanism for pinball machines in order to stop cheats. If the machine was moved to influence the path of the ball, the machine would go dead and the ball would tumble down pass the flippers and out of the machine. Williams became established as the top pinball machine maker in the US, and it was a position they held until interest in pinball began to wane in the 1970s.


WMS enters the video age … and eventually slots

Williams took note of Atari's success with 'Pong', and decided to branch out into the new concept of video arcade games. WMS did not meet with much success until the 1980 release of the classic sideways scroller Defender. They later released other popular games such as Joust, Robotron: 2084, Sinistar and Moon Patrol.

WMS added video and computer technology to their pinball machines and brought about a revival of the classic co-op. New titles such as Gorgar, Black Knight, Space Shuttle and Pin*Bot briefly became as popular as their arcade game usurpers.

Amazingly, WMS did not enter the lucrative slot machine market until 1994, just as both pinball and arcade games where falling in popularity thanks to home game consoles. WMS's first effort was released in 1996. It was a multi-line, multi-coin bonus game called Reel 'em In. This slot proved to be extremely successful for WMS, so they followed it up with Jackpot Party, Boom and Filthy Rich. WMS's slots became so successful that they eventually closed down its pinball division entirely.

Since the turn of the millennium, WMS have experienced a great deal of success with their branded-slots. Real-world slots machines that are found in casinos and arcades throughout the world include Men in Black, Hollywood Squares, The Dukes of Hazzard, Top Gun, The Wizard of Oz, Star Trek and The Lord of the Rings. Unfortunately, due to the distrust of online casinos by bricks-and-mortar casinos, very few of these games have been converted to online versions.

WMS's net incomes rose to $110 million+ per annum, and they became a very attractive propostion for investors. They were eventually snapped up by Scientific Games in October 2013. The purchase price? A very cool $1.5 billion.

A handful of WMS's top slots

WMS's slots are usually a lot of fun, and all come with a unique and familiar interface that makes selecting your specific bet super easy. We only wish there were more of them! Here, anyway, are three of the best – in our opinion – WMS slots available to play online.

Invaders from the Planet Moolah

Some slots are simply 'udder' rubbish, but you'll probably end up playing Invaders from the Planet Moolah until the cows come home. This bizarre and rather zany slot takes alien abduction as its theme, although in a neat twist the cows are the aliens and they suck up humans into their spaceships as well as their heifer cousins. If you manage to hoover up the entire family unit of one homestead – ma & pa, grandma and grandpappy and the family bow-wow – a nice jackpot slides into your slots balance.


When you are playing online slots, you of course hope that the gods are smiling upon you. If you play this Olympus-sent game from Zeus, the gods are most definitely on your side! This slot takes you back to the days of ancient Greece, when those wacky Grecians thought the world was controlled by a group of supreme beings who dwelt upon Mount Olympus and toyed with the lives with mortal folk as we today toy with NPCs when playing computer games. This slot has tons of features, and you can win a massive century of free spins if the reels land right for you.

The Wizard of Oz

Very few of WMS's slots in the real-world ever get converted into online slots, but here's an exception. The Wizard of Oz is of course based on the fabulous MGM musical movie of 1939, which in turn was based on Frank Baum's 1900 novel. You get to meet everyone who'd you expect you'd meet in this slot – Dorothy, the Scarecrow, the Tinman and the Cowardly Lion, plus her green-ness the Wicked Witch of the West, and those super-scary flying monkeys ("Fly my Pretties! Fly!"). This great slot features plenty of superb bonus games as you make your way to the Emerald City and the jackpots within.

WMS/Scientific games – bothered about online?

If you head towards WMS's website, you'll notice that they take their real-world slot machines far more seriously than they do their online endeavours. WMS has an amazing track record in creating real-world slot machines and video games, so you can't blame them for that attitude. Maybe if moves to legalise online gambling in the USA bear more fruit, we'll see more WMS online slots in future. For the moment, we'll just have to be satisfied with what we've got!