WMS casinos carry the slots that grew out of Williams, the American pinball maker, from Raging Rhino and Zeus to the newer Megaways games. The WMS casinos on this page are the open casinos in our database with its games online.
Below the list we explain who owns WMS today, run through its history in one table, look at the classics and the Megaways titles and cover what to check before you play.
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Rated 94 of 100%
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Rated 94 of 100%
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Rated 87 of 100%
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What is WMS known for?
WMS is the slot brand that grew out of Williams, the American pinball and arcade maker, and became WMS Gaming in 1999. It is best known for Las Vegas floor hits such as Reel 'Em In and the Monopoly slots, and online for Raging Rhino, Zeus 1000 and Bier Haus. Scientific Games bought WMS in 2013, and the group is now called Light & Wonder.
WMS is one of those names that every slot player has seen and few could explain. The letters come from Williams, the American company behind decades of pinball and arcade machines, and the slot business grew out of it in the 1990s as WMS Gaming. It became a casino floor heavyweight from its Las Vegas base before the online versions arrived.
Since October 2013 WMS has belonged to Scientific Games, which renamed itself Light & Wonder in 2022. So when you load a WMS game today, the supplier behind it is Light & Wonder, the same group that owns Bally Technologies and Barcrest.
The games themselves still wear the WMS badge. SlotCatalog files close to 150 titles under WMS, nearly all video slots, plus a Monopoly roulette game.
Eight decades of history fit into a short table if you stick to the moments that shaped the games you play now.
| Year | What happened |
|---|---|
| 1943 | Williams Manufacturing Company is founded, the root of the later WMS Industries |
| 1991 to 1994 | Williams Gaming is set up, ships video lottery terminals to Oregon in 1992 and moves into reel spinning slots in 1994 |
| 1996 | Reel ‘Em In becomes the company’s first hit video slot |
| 1999 | The slot business is incorporated as WMS Gaming |
| 2001 | The first Monopoly themed participation slots arrive |
| 2012 | WMS creates Williams Interactive for online, social and mobile games |
| 2013 | A content deal with Rank brings WMS slots to Grosvenor and Mecca online; in October Scientific Games completes its purchase of WMS |
| 2022 | Scientific Games becomes Light & Wonder, trading under the new name from 29 April |
The 2013 Rank deal is a neat snapshot of what the first online catalogue looked like: The Wizard of Oz, Zeus, Reel ‘Em In and Jackpot Party, all names that started out on casino floors.
Three games from 2015 do a good job of showing what WMS is about online, and each one shows a different side of the studio.
Released online in August 2015, Raging Rhino spreads 4,096 ways across six reels and four rows, with wilds that carry multipliers in free spins. SlotCatalog rates it high volatility and gives RTP figures between 95.51% and 95.91% in different places, so check the version you are playing.
Zeus 1000 from September 2015 pairs a 5×4 reel set with a much taller 5×12 set, plays 100 lines and is listed at 96% with medium volatility. Bier Haus, out a month later, swaps Olympus for Oktoberfest: 40 lines on 5×4 reels, 96% RTP and free spins in which, according to SlotCatalog’s review, the trigger symbols turn into sticky wilds.
WMS moved into Megaways in 2020, and it did not hold back. Spartacus Megaways landed in September 2020 with up to 1,000,000 ways, an RTP of 96.32% and a top win of 12,500x, and a month later Raging Rhino Rampage took the old rhino to a reel set that can grow from 6×4 to 6×8.
Invaders Megaways followed in June 2021. It runs up to 117,649 ways in the base game, while its Unicow feature can push that to a full million, with an RTP of 96.3% and high volatility. On paper these newer releases list slightly higher RTPs than Raging Rhino, which matters if you play longer sessions. They are also wilder rides, so set a budget before you start rather than after a dry spell.
Here is a quirk that trips people up. Light & Wonder owns several brands, and databases and casino lobbies do not always agree on which label a game belongs to. SlotCatalog, for example, files Spartacus Gladiator of Rome from 2014 under Light & Wonder rather than WMS, even though it is part of the same Spartacus line as the WMS Megaways game.
The practical advice is simple. If you cannot find a WMS title in a lobby, search for it by name or look under Light & Wonder, and if you like the family, the Barcrest catalogue comes from the same group. Do not assume two WMS casinos run the same RTP version just because the game name matches, either.
The list at the top of this page shows the open WMS casinos in our database, and sites that have closed or landed on our blacklist are never included. A well known supplier tells you about the games, not about the casino, so this is where the real checking starts.
First the licence: it has to cover the country you live in, and if online casino play is not legal there, do not play. Then read the cashier section of our review for withdrawal limits, processing times and when identity checks kick in.
Last, open the info screen of the game you want to play and check the RTP, because WMS casinos do not all run the same settings, and if a bonus is involved, make sure WMS slots count in full towards wagering. Want to compare studios first? Our overview of game providers lists them all.
Light & Wonder. Scientific Games completed its purchase of WMS Industries in October 2013 and changed its name to Light & Wonder in 2022.
The name comes from Williams, as in the Williams Manufacturing Company founded in 1943, which later became WMS Industries. Its slot business was incorporated as WMS Gaming in 1999.
Raging Rhino, Zeus 1000 and Bier Haus are the classics, and Spartacus Megaways, Raging Rhino Rampage and Invaders Megaways are the best known newer titles in WMS casinos.
It varies. SlotCatalog lists Bier Haus and Zeus 1000 at 96%, Raging Rhino at around 95.5% to 95.9% and Spartacus Megaways at 96.32%. Casinos can run other versions, so check the info screen.
Williams Interactive was the online subsidiary WMS set up in 2012 to run its online, social and mobile games. It is part of the same company history, not a separate studio.
Some casinos and databases file WMS games under Light & Wonder instead, so search by the game name. Availability also depends on the casino’s licence in your country.
From Las Vegas veterans to brand new studios, you will find every provider we track in the index below, each with its count of open casinos.
No studio matches that search.
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