WMS casino game software provider also known as Williams Interactive, has a long history that dates back to 1943. They are best known for supplying slot machines to land-based and online casinos. The company was acquired by Scientific Games in 2013 and since then has gone from strength to strength. They offer unique games and everything you need to know can be found on this page.
Below are the 10 best WMS online casinos for 2025 along with information on the best bonuses and non-deposit chip and free spins codes they offer.
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The company history for WMS casino software dates all the way back to 1943 when the company began producing pinball machines. In the 1970s, they branched out into coin-operated arcade games such as Paddle Ball, Defender, and Robotron: 2084. In 1988 they acquired Bally/Midway (Midway were known for titles like Mortal Kombat). Williams Interactive stopped creating pinball machines in 1999 when they turned their focus to slots and gambling machines.
The company was initially called Williams Gaming and in 1991 the production of video lottery terminals began. It was in 1994 that the company entered the slot machine market and it has been producing some of the best Las Vegas casino slots for both land-based and online casinos using Williams Interactive software ever since.
A big focus for Williams Interactive was the creation of slot machine cabinets for brick and mortar casinos and these would be sold or leased to different operators. In 1999 the company named changed from Williams Gaming to WMS Gaming. In 2000, WMS introduced their Monopoly series of slots where became a huge hit and because of this, they secured licenses for other big brands such as Men in Black, Star Trek, and The Wizard of Oz. In 2013, Williams Interactive merged with Scientific Games and it became a fully-owned subsidiary of Scientific Games.
WMS online casinos in 2025 offers some of the best unique slots in the world and many of the company titles can be found inside Vegas casinos too. Classic WMS titles include Monopoly, Wizard of Oz, Zeus, Bier Haus, and Spartacus. The slots you find at online casinos using Williams Interactive software use the latest technology and WMS have made incredible strides in graphics, gameplay, and sound with the creation of their G+ and G++ series of slots which includes excellent titles like Kronos, Lil Red Riches, and Invaders from the Planet Moolah.
The company was the first to develop elongated reel slots with their release of Colossal Reels games. They were also the first to include luxury seats and Bose speakers in their slot machines in land-based casinos. If you want to test out some of the best slots from WMS at online casinos in 2025 you'll be happy to hear that the most popular titles are available using the fun play option so you can play them in demo mode and test out all the features. You can try colossal reel slots such as KISS or even the Goldfish slot which is just the same as its Las Vegas counterpart.
When it comes to RTP percentages, online casino games from Williams Interactive are comparable with all leading software providers in the online gambling industry with percentages ranging from 92% all the way up to 98%. The higher the RTP the better chance you have of winning over the long term. RTP stands for Return To Player and is the percentage amount you can expect to win. For example, if you play one of our top 10 WMS casino slots that has an RTP percentage of 96% it means that you will win $0.96 for every $1 wagered over a period of time.
It's not just the RTP percentage that we look at when reviewing the most popular slots for Top10Casinos, our review team also looks at the volatility of the slots. This is the frequency for which you can expect winning combinations to land on the reels. High volatility WMS casino slots will produce the biggest wins, but these are less frequent. Medium to low volatility titles will produce more frequent winning combinations but the cash prizes will be lower. This is another thing to consider when choosing the top-quality slots to play for real money at casinos using this software provider. Below are the best 10 WMS online casino slots with the highest RTP percentages in 2025 and don't forget to check out the amazing no deposit cash and free spins codes in our Top 10 lists so you can try them out for free. All you have to do is signup and bingo - you're in!
Other high RTP titles include Secret Mission at 96.31%, Kronos Megaways at 96.24%, Giant's Gold at 96.21%, Kodiaks Roar at 96.20%, Raging Rhino Rampage at 96.20%, and Enchanted Kingdom at 96.19%. The slot with the lowest RTP percentage is Siberian Storm Dual Play at 92.53%.
WMS is known for creating classic video slots. Most of them have simple and straightforward rules and some of its most popular titles are listed below. There can be played for free using demo mode to see how all the different features work and to assess whether they're the ones you want to play in 2025.
As the name itself suggests, Zeus features Greek mythology elements. Its volatility rate is medium-high, and its RTP is 95.20%. Wild symbols substitute regular symbols, and the only bonus mode here is free spins. Wins are triggered from left to right, and Zeus features 30 fixed paylines. The grid of this slot has 5 reels and 3 rows.
Super Jackpot Party is a classic slot that has a 5x3 grid. Regular symbols include elements of a party as well as a Lucky 7. The RTP rate is 96.01% and if you play it for real money, you can wager as low as $0.10 per round. Wilds substitute regular symbols and additional bonus features are Dance Feature, free spins and the Whack-a-Pooper bonus game.
Players can wager as low as $0.40 when playing OMG Kittens for real money. The maximum bet in this game is $100. The fishcat is the Scatter symbol in the slot, but they don't reward free spins. Instead, this bonus mode is activated by landing four big cat symbols and a bonus icon on the rightmost reel. The RTP of OMG Kittens is 96.95%. The volatility rate is medium, and the slot has 40 paylines.
The third instalment in the Zeus slot series has an RTP of 96.10% and a medium-high volatility rate. The maximum win is 1,920x your bet. The paytable features 10 regular symbols and 2 special ones. The special symbols are the Scatter and Wild. Three to five Scatters can trigger up to 50 free spins and provide you with a cash prize. Wild Reels are triggered when you land a Wild and a Zeus symbol.
Invaders Megaways was released in 2021, and it has 6 reels. It comes with a cascading wins system, which means that winning symbols disappear and new ones drop down. Cascades will continue for as long as you trigger wins. By landing up to 6 Scatters, you can activate 7-15 free spins. Premium symbols with special features are also available in this game. Invaders Megaways features a 96.30% RTP and a high volatility rate.
If you prefer to try your luck at winning some real money, you can use a no deposit cash or spins offer and we have plenty of these listed on our site so be sure to check them out.
Bonus features are often included with video slots, and these can often attract a greater number of players. They not only add to the excitement and fun, but many of them offer additional ways to win and huge cash prizes. They prolong your gameplay and WMS casino slots offer some innovative and unique features that you won't find in other slots. Listed below are the finest features you'll come across when playing online casino slots from Williams Interactive in 2025.
One of the big things that stands out about this software provider is the years of experience the company has. They have an excellent reputation, and they know how important game quality is. They take their game development seriously and this is seen in the quality of their graphics, sound effects, and extra features included in their collection of slots. The games offer high payout percentages and there are plenty of exciting features and big jackpots up for grabs.
In addition to quality graphics and gameplay, the most popular WMS slots can be played on smartphone and tablet devices. They are developed using HTML5 technology and are fully mobile compatible. If you are new to WMS casino games, our top 10 experts recommend using a no deposit offer to test them out with no risk or use the fun play demo mode option that is available on many of their most popular titles.
In terms of branded online casino slots, Williams Interactive have some of the most known titles in 2025. These are based on classic movies, famous music personalities, TV game shows, and more. They include excellent bonus features such as free spins and huge jackpot prizes, and below you will find out the top 3 WMS branded online casino slots. All of these games have a couple of versions so if you enjoy one, you're sure to love the others as well.
Most people are familiar with the movie and now you can play the Wizard of Oz branded slot from WMS. It comes with four superb bonus features that all reward different items. Glinda gives players up to 4 wild reels at random and the Road to Emerald City bonus round leads you to the wizard and a huge cash win. You can play on mobile and desktop and other branded slots in this series include Wizard of Oz: Ruby Slippers, Wizard of Oz Emerald City, and Wizard of Oz Road to Emerald City.
The Monopoly series of branded slots are the most popular branded slots at WMS casinos. Monopoly is based on the board game of the same name and is played using 8 reels. It offers cluster pays and uses cascading reels. Additional features include wilds, cash cards with up to 1000x your bet, respins, and more. Other titles in this series include Super Monopoly Money, Monopoly Electric Wins, Monopoly Grand Hotel, Monopoly Big Money Reel, Monopoly Mega Movers, Monopoly Once Around Deluxe, and Epic Monopoly II.
Elvis Lives is a branded WMS slot based on the king of rock 'n' roll. It features his songs playing in the background along with 4 extra features. Players can enjoy free spins, wandering, and double wandering wilds, and 2 pick-me bonus games. You can win up to 2,000x your bet in the Elvis Lives bonus round. The popularity of this slot led to the release of Elvis The King Lives which can be found at the best online casinos with WMS games.
Other popular branded WMS casino slots include Top Gun, KISS, Spartacus, Gremlins, Friends, and Bruce Lee.
The most popular WMS online casino bonus is the free spins. It can come in the form of a deposit offer or a no deposit offer and players are rewarded with a number of spins on a particular slot title. Free spins are a great way to try out high-quality slots and the number of spins given depends on the casino, but you can expect it to range from 10 spins with no deposit right the way up to 200 with a welcome signup package. Some of the best free spins slots include Raging Rhino, Jumpin Jalapenos, and Top Gun, and many of the Williams Interactive slots come packed with free spin bonus rounds too. Be sure to check out our 2025 best 10 no deposit free spins bonuses for casinos powered by this provider to get started.
The no deposit bonus is the finest type of casino offer to claim at a WMS casino online in 2025. They are usually reserved for brand new players. As the name suggests, this bonus is free cash or spins given with no deposit required and players can use it to play real money games and keep winnings up to a fixed amount. In most cases, the non-deposit bonus funds can be used to play WMS casino slots but our top 10 experts strongly recommend you check out the terms and conditions before redeeming any offer so you understand the games you can play, the wagering requirements, minimum and maximum bet amounts, and other terms you need to adhere to in order to cashout your winnings.
At Top10Casinos our reviewers ensure that only the best WMS no deposit casinos and their promos are listed on our site. All the WMS no deposit bonus offers are checked to ensure they are 100% safe and have fair wagering requirements that can be met. If you are interested in playing WMS casino games in 2025 a free no deposit bonus code is the way to start.
Williams Interactive has developed a number of progressive jackpot games over the years and these include Jackpot Party, Leprechaun Gold, Life of Luxury Series, and more. The progressive jackpots offered by this software provider can be divided into different sections. There are true progressive jackpots as well wide progressives such as The Wizard of Oz Series and the Monopoly series. Below you will find our favorite 3 WMS progressive jackpot slots for 2025.
Egyptian Riches has a huge jackpot worth 5,000 coins with a gamble feature as well as giving players the chance to win the site-wide Jackpot Party progressive jackpots. The progressive jackpot feature is triggered randomly and allows players to win one of five massive cash jackpots. For all the details, be sure to read our full review and check out our no deposit coupons to try this slot for free.
Dancing in Rio progressive jackpot slot is themed around the carnival in Rio de Janeiro and is packed full of exciting features including 150 free spins. There are 6 jackpots up for grabs as well as the progressive jackpot and all players have to do is fill the reels with the green trigger symbols to change their lives. Our full review explains everything you need to know about this WMS casino slot and how to get your hands on a great no deposit spins deal.
Reel Riches Fortune Age is an Asian-themed progressive jackpot slot with a bonus wheel players can spin to win cash prizes, upgrades, or jackpot prizes. The Mega Jackpot has up to 1,250x your wager to be won and there's a free spins round with up to 46 free spins with 4x multipliers. If winning big is your thing check out our review for more information on how to play and how to hit the massive wins in 2025.
The biggest wins for WMS progressive jackpots have come from land-based casinos. In April 2014, a lucky winner at Blue Water Casino in Arizona won $1.7 million on the Lord of the Rings Land of Mordor wide-area progressive slot after playing $20.
Williams Interactive also released a number of slots as part of their Mega Drop collection and these games offer players the chance to win one of three progressive jackpots. Titles in this collection include Dr Reactive, Nessie's Treasure, Tetris Extreme, Wicked Dragon Wilds, Ultimate Ink, Enchanted Kingdom, Book of Relics, Prism blast, Lucky Lanes, and Reel Clash. These can all be found at our highest-rated reviewed casinos online with games by this software developer.
The company specializes in slots and they offer a rich portfolio of games and they have also developed a very small selection of roulette games. These roulette titles are based on their Monopoly license.
The sole focus of the company is on online and land-based slot machines and they, therefore, do not offer any live dealer games. If you are looking for live dealer games we recommend looking at our top 10 most popular live dealer online casinos for 2025.
Williams Interactive as a software provider has evolved with the online gambling industry and has kept up with the competition. They offer a range of mobile-optimized slots and players can enjoy all their best titles on Android and iOS smartphones and tablets. All the games are developed using HTML5 and will adjust to suit the variety of screen sizes. All the older classic games such as Montezuma and Zeus have been redesigned for mobile users as have the highest RTP slots so you can get in on all the action on your mobile or tablet devices at any of our top WMS online casinos for 2025. What's more, you'll even find mobile no deposit codes and free spins bonus you can use too. There is no need to download and instant apps as all the casinos use an instant play no download platform so all the games will load smoothly in your browser.
New online casinos with Williams Interactive slots launch all the time and our top 10 review team vet them all. Below you will find the best brand new WMS casino sites to release in the past 12 months. They all offer a fantastic selection of games including the best slots and you'll find a range of generous bonuses and promotions that you can avail of. We even have exclusive no deposit promo codes specifically for our readers.
While Williams Interactive may be synonymous with Las Vegas slots and land-based gambling, their move to online casino slots has made them a household name and as such there are some fantastic online casinos for 2025 where you can play the best titles by this provider. Below you will find our full top 10 list of reviewed WMS online casinos. These have all been fully tested and rated using our strict criteria and they are 100% safe and secure.
The best WMS bonus promotions are the ones that allow you to play the games you want to play. With WMS casino bonus offers, this means slots and here on our site, we list our top 10 best no deposit, free spins, and regular player promotions for 2025. You'll find the latest new player codes as well as huge first deposit welcome packages. We also list the top regular player bonuses including generous reloads, cashback, and the best loyalty programs with huge benefits.
We don't just list every offer we find, our review team checks them all out to ensure the bonus terms are fair and we check the quality of the site and operator too. At Top 10 our readers are important and we know that you want value so we look for the most rewarding offers including special deals such as WMS free spins casino bonus offers, or no deposit deals, as well as mobile coupons for both iOS and Android players. We even list special payment method codes, such as Bitcoin or PayPal bonuses, so you can get even more every time you fund your account.
Williams Interactive is one of the oldest companies in the online gambling industry and as such they have an excellent reputation. WMS is licensed by the UK Gambling Commission one of the strictest of all regulatory authorities and fair gaming and player safety and security are a must in order to receive a license and keep it. They also hold a license from the Malta Gaming Authority. The random number generators are regularly tested by independent auditors including eCOGRA, and iTech Labs. The software uses the latest SSL encryption technology to ensure that all transactions are encrypted and all player data is kept safe and secure.
WMS has won numerous awards over the years including four Most Innovative Gaming Technology Product Awards which speaks volumes about their reputation. They are continuously updating their portfolio and adding new and exciting features as well as using the latest technology.
WMS was purchased by Scientific Games in October 2013 for a price of $1.5 billion in cash. At the time, WMS was also licensed by the Nevada Gaming Commission as an interactive gaming manufacturer and a service provider license for land-based casinos.
WMS is a subsidiary of Scientific Games Corporation which is a multinational software developer. The company is licensed in the UK by the UK Gambling Commission and the Scientific Games Corporation headquarters is located in Nevada, Las Vegas. WMS also has offices in Canada, Mexico, South Africa, Peru, Spain, France, Austria, the UK, and Australia.
WMS holds its own against other big-name providers even though its focus is on slots only. But we'll let you decide for yourself. Our top 10 experts have listed a comparison below so you can decide whether WMS online casinos are the choice for your real money gambling in 2025. If you are doing your own research into the best online casino software be sure to look at all the different elements including licensing, banking options, promotions (especially no deposit code availability), and the game portfolio.
One of the disadvantages of WMS online casinos is that they do not allow real money players from the United States. In 2025 European players get to enjoy the best of what WMS casinos have to offer especially players based in the UK. Their land-based casino games are of course available to play in casinos throughout the USA but if you are looking to play real money WMS games online we recommend that you check the country restrictions with the online casino before signing up for an account. For country-specific gambling, we recommend checking out our top 10 country-specific pages where you'll find all the information you need on the legal landscape.
While this page details the most important information relating to WMS casino software, there may still be some things you'd like to know and our top 10 experts have put together a list of the top questions players ask or seem to be confused about. These are answered below.
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