If you’re a slots fan, chances are you have your own preferences when it comes to online slots.
For example, you may seek beautiful design and animations, look for an abundance of features, or hunt down slots with high winning potential.
The best slot providers out there, however, offer all of these things and then some more—but who are they?
This is exactly what our list of the best slot providers in 2024 is here to show you.
Our selection includes industry giants that have been around since the dawn of UK online casinos and are still going strong and younger players that have managed to make a difference.
Curious? Read on and see for yourself why these names have made our list of the best slot providers in the online casino world!
13 Top Online Slots Providers in 2024
Barcrest is a well-known casino software developer with a long history.
As a slot provider, Barcrest is not just popular in the UK, but also around the world since it has now grown into a global corporation.
Starting out in the UK creating call cabinet games, today the company solely focuses on developing casino games. Specifically, Barcrest is most known for its Rainbow Riches slot game, which evolved into a family of games including Rainbow Riches Pick’n’Mix, Rainbow Riches Free Spins, Rainbow Riches Reels of Gold, and Rainbow Riches Megaways, to mention just a few.
#12. Merkur Gaming
In addition to being one of the best slot providers, Merkur Gaming is an international company with operations all over the world while Merkur Games are accessible at around half of all online casinos in the United Kingdom (although they do not yet rank among the top 100 UK market suppliers).
Merkur Gaming is a game development firm that is owned by the Gauselmann Group, a German firm. The company has developed over 200 slots, each with its own style and unique characteristics.
That said, they still provide a wide choice of traditional fruits and more advanced video slots to also suit the tastes of the traditional slot gamer.
Another Swedish name on our list of the best slots providers is Quckspin, acquired by Playtech.
The company has a variety of slots to choose from, including Ghost Glyph, Mayana, Nero’s Fortune, and many others.
Quickspin also includes over 50 casino games, such as Eastern Emeralds, Divine Dreams, Durian Dynamite, Ticket to the Stars, and The Grand – all super popular throughout online UK casinos.
Not to mention, in collaboration with Competiton Labs, Quickspin casinos also provide online tournaments, letting you compete against other players for rewards.
Never a dull moment with this slot provider!
Rival, which was founded in 2006, is neither a veteran nor a newcomer in the slots business.
Nonetheless, they’ve built a collection of engaging and graphically rich titles with interesting animations accessible in both downloadable and live play versions over the course of their decade in business.
Highly interactive iSlots are a unique treat, with each one telling a tale whose progression is determined by your abilities and luck during the slot game’s bonus rounds. Some of our favorite examples include As the Reels Turn, Cosmic Quest, and Reel Crime.
The best Rival slots can be found in more than a few popular online casinos and are also accessible to US players.
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With their beautifully designed and perfectly executed slot games, Yggdrasil didn’t take long to get established as one of the best slot providers within the international gaming community. Their high-adrenaline action slot games are not just a pleasure to look at, but also to play!
This rising star regularly offers comprehensive packages that consist of high-quality and modern design, engaging themes, and well-developed concepts, as well as a number of distinctive additional features.
It’s not simple to pick the best Yggdrasil slot out there, but we’d go with Double Dragons, Legend of the White Snake Lady, Big Blox, and Bicicleta. Anyway, this slot provider has countless games available on a wide range of devices to make you a lifetime fan!
#8. Williams Interactive (WMS)
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WMS is an American software company with roots in the Williams Manufacturing Company, which has been producing pinball machines since 1943 and has since expanded its portfolio to include physical slots. Specifically, in 1996 WMS launched Reel ‘Em In, the first American video slot machine offering a second-screen bonus round, and in 2012 Williams Interactive was formed to exploit the company’s experience in the online arena.
Players from all around the world may now enjoy slots with locking symbols, cascading reels, additional rows, and a range of other features designed to increase players’ chances of winning. Not to mention, WMS’ portfolio includes a number of games with very high RTPs that range from 98 to 99 percent.
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IGT, also known as International Game Technology, is a significant producer of casino software for both online and land-based casinos. IGT’s portfolio isn’t extensive, since the company appears to value quality over quantity, but it does have entertaining slots with a variety of themes and reasonable payout possibilities.
Some of the best IGT slots include Da Vinci Diamonds, Wheel of Fortune, Wolf Run, Family Guy, and Pharaoh’s Fortune.
#6. Play n’ Go
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Sweden is such a fertile ground for breeding some of the best slots providers and software developers and Play’n Go is one of the examples.
Their slots are quite popular because they meet all of our criteria. They are visually appealing, have original themes and execution, are action-packed, and have a number of features with a high win potential. It’s difficult to pick a favorite among the best Play’n Go slots, but Riches of Ra, Aztec Idols, Cops n Robbers, 7 Sins, Aztec Princess, Book of Dead, and Wild North are all popular among players.
#5. Realtime Gaming
Since 1998, RTG has been one of the best slot providers, offering games to both US and international gamers.
Daily, weekly, and monthly slot tournaments, which allow players to compete against their peers for cash rewards, are a popular RTG feature. The best RTG slots come in both downloadable and immediate play formats.
Something we should definitely mention, however, is that the company’s popularity among operators, but not as much among players, comes from the fact that it allows casinos to pick how high or low a game’s payout percentages will be.
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Playtech was established in 1999 and has since become one of the best slots providers globally. The company has pushed its competent nose into pretty much everything, resulting in a portfolio that includes traditional and video slots, table games, video poker, bingo, scratch cards, poker, live games, and fixed odds games.
When it comes to the top Playtech slots, the developer is best known for the universally liked Marvel Series slots, including Iron Man, Fantastic Four, X-Men, and The Incredible Hulk, as well as movie and TV series themed titles like Rocky, The Mummy, and The Sopranos. Some of our favorites, however, and progressives such as Beach Life, Jackpot Giant, and Gold Rally as they have the potential to create multi-millionaires.
#3. NextGen / Nyx Gaming Group
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When it comes to online slot providers in general, Nyx Group is a prominent participant.
Thanks to fantastic graphics and animations, as well as a variety of creative in-game features, NextGen slots are instantly recognizable. The SuperBet feature, for example, allows you to place an extra stake that increases your chances of winning, and it’s frequently used in conjunction with enhanced wilds and free spins. Medusa, Doctor Love, The Snake Charmer, Foxin’ Wins, Merlin’s Millions, and Great Wild Elk are just a few of the finest NextGen slots that have grabbed players’ hearts.
#2. Net Entertainment
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NetEnt was established in 1996 and has since won several awards, gained admirers from all over the globe by working with over 170 respected online casino operators, and established itself as a market leader.
As one of the best slots providers out there, NetEnt’s game portfolio has something for everyone, starting from traditional slot games like Twin Spin all the way to more complex games such as Gonzo’s Quest, Jack Hammer 2, and South Park, among others.
This slot provider also offers some appealing progressives, including Hall of Gods and Arabian Nights, and its Mega Fortune slot machine has even made it into the Guinness Book of World Records, as a player won almost €17 million in a single spin.
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Our best slot provider in the list doesn’t really need an introduction.
It would be simple to get caught up in the glitz and try to repeat past winning methods, but Microgaming has avoided this pitfall. The company is always developing and surprising us with innovative concepts and flawless implementations. Their slots are available in both download and instant-play versions, but because of US gambling legislation, they have been unavailable to American players since 2008.
Some of their best work includes classic fruities such as Break Da Bank, Couch Potato, and Cosmic Cat, hugely popular video slots like Thunderstruck II, Immortal Romance, Bust the Bank, Terminator 2, and Lost Vegas, along with progressive Mega Moolah, Major Millions and King Cashalot.
Best Casinos to Play Slots From Your Favorite Online Providers
Online Slots Providers FAQ
Do you still have some questions on the best slots providers? We’re here to answer them for you:
#1. What Are Online Slot Providers?
Providers of online slots design and produce slots games for casinos all over the world. Some of these companies only operate with physical casinos while others provide games for both online and physical casinos.
#2. Which Online Slot Providers Offer the Highest RTP?
Playtech’s Ugga Bugga is definitely the slot with the highest RTP, going as high as 99.07% and being very attractive to its players.
#3. What to Look For in Online Slot Providers?
A good slots provider is usually one who offers a combination of a high RTP with a Low Volatility slot game. This means you’ll have more consistent wins at modest stakes, which means your credits will last longer.
#4. Who Is the Most Reputable Online Slot Provider?
This is definitely a close and fair race between our first best slot provider, Microgaming, and our #2 best slot provider, NetEnt. When it comes to quantity, Microgaming has more than 600 slot titles compared to its competitor’s 200. However, when it comes to quality, NetEnt stands out for its unique features, innovation, creative and stunning designs, and incredible visuals. The choice is yours!
Rachel Pine is our slots expert who has worked in the online gambling industry for 10+ years. Over the course of her career, Rachel has reviewed more than 3,000 slots.