Slots are the biggest online casino game in the UK, accounting for a good deal of players and profits. Last year alone, a staggering 22 billion spins took place at online slot providers in the UK! There’s no doubt that slots are some of the country’s most beloved gaming options, but which are our favourite developers?
When you visit an online casino, you’ll likely notice that the majority of its game library is made up of slots, including options from top developers. Regardless of your preferences, there’s an ideal slot for you, and many of them have been developed by the likes of Pragmatic Play, NetEnt, and Microgaming. These top names drive innovation in the industry and are home to some of our very favourite slot games.
Starting Strong With NetEnt
We’ll kick off our rundown with one of the powerhouses of the industry, NetEnt. They’re responsible for some of the very top slot games on the market, such as Gonzo’s Quest and all its spin-offs, as well as Starburst and Finn and the Dragon Tales. They’re also a go-to for their slots themed off pop culture, including the likes of Vikings, Jumanji, and Guns N’ Roses slots.
NetEnt are behind some of the most immersive, plot-driven slot games on the market. They also lead the way in terms of feature innovation, with the likes of Avalanche, which sees the winning symbols vanish and be replaced by new symbols, so you get the opportunity for multiple wins in just one spin. Unique features are certainly a hallmark of a NetEnt slot; they’re always stuffed full of new features
and combinations to keep things interesting. The iconic Starburst, for example, has over 20 different ways to win and includes the Starburst Wild feature, which expands across reels two to four and adds respins.
Why is NetEnt So Popular With Slot Lovers?
NetEnt are truly pioneers of the slot game industry, and they have won themselves leagues of loyal fans as a result. They were founded back in 1996 and have been focusing on producing the very best slots since the early days of online casinos in 2007. Today, they’re one of the most popular providers out there and were involved in around 58.3 billion gaming transactions in 2019 alone!
They’ve earned their customers through the innovative features they bring out each year, like Avalanche and Elevate (the latter of which allowed players to add extra symbols and customise their experience). They also consistently publish new slot games, allowing all players to find their ideal option in their variety. Players might also be swayed by their stacked trophy cabinet, which includes the EGR B2B award for slot innovation in 2021.
How can You Find the Best NetEnt Slots?
It can be difficult to find the top options from the most popular slot game developers—there’s just so much to choose from! In order to avoid the hassle of research or option paralysis, many players turn to industry leaders Online-Slot.co.uk to do all the hard work for them. They compare slots and online casinos across all the important factors, like customer service, bonuses, game options, and payment methods, to find the very best on the market. It’s also possible to filter their library based on the specific developer you’re looking for, which makes finding the slot for you a good deal easier!
Mega Microgaming
Microgaming (now part of Apricot Investments) can claim ownership of one of the world’s most popular slot games, Mega Moolah. Mega Moolah helped popularise a whole new type of slot—progressive jackpots, where the prize pot grows the more you spin. Mega Moolah is responsible for the biggest jackpot payout from an online slot machine, when, in 2015, Jon Heywood won a record-breaking £13,209,300 on progressive slots. The chance to win part of such a vast jackpot is one of the reasons Microgaming remains a top slot option.
Microgaming is also behind some of the classic popular slot games, like Immortal Romance and Thunderstruck (although some of these have been sold off). They’re another developer who specialises in themed games, and their Game of Thrones and Jurassic Park slots are some of their most popular. Players’ love for Microgaming is reflected in the numbers, with their parent company responsible for over 400 million bets a day for over 48 million players!
What Makes Microgaming a Top Provider?
Microgaming has been leading the industry in terms of innovation for 30 years, and they have racked up over 60 awards during that time! They’re well known in the industry for prioritising players in their game development, have a keen focus on responsible gambling, and are licensed across territories. Given their awards and reputation for dishing out the big bucks, players feel like Microgaming is one of their most trusted options.
Popular Pragmatic Play
Pragmatic Play is home to some of the most popular franchises of slot games on the market, most notably Big Bass. They’re the leaders when it comes to spinoffs, with Big Bass Bonanza giving rise to the likes of Big Bass Splash, Big Bass Megaways, Christmas Big Bass, Big Bass Amazon Xtreme, Big Bass Halloween, and many more. Including so many variations of their most popular slots is a big draw for players, who can combine the familiar mechanics with something a little different.
Another thing Pragmatic Play does well is themed slots, with Christmas and Halloween options helping get players in the holiday spirit. Their intricate slots are often carefully themed and create their own immersive world. Gates of Olympus, which is themed around Greek mythology, is another of their most popular slots.
Pragmatic Play is a relative newcomer compared to some of the other developers on the market. Back in 2017, they won the EGR B2B Rising Star award, and since then, they have gone on to become one of the biggest slot game providers around. In 2025, they turned the Rising Star Award into the EGR Best Slot Supplier Award, and they also launched the slot, Sweet Rush Bonanza, combining two of their most popular slots, Sweet Bonanza and Sugar Rush.
What Makes Pragmatic Play a Top Pick?
Pragmatic Play is one of the most trusted slot developers available; they’re licensed in over 40 jurisdictions, and all their games go through thorough testing completed by the likes of Gaming Laboratories International. Their awards are another draw, letting players know they offer some of the best slot games on the market. If players are unsure which to pick, they can also test all their slots through demos, which highlight the smooth graphics of their games.
Players also enjoy that Pragmatic Play releases new options pretty much every week, meaning there’s always something different to try out. Some of their most popular slots, such as Big Bass and Sweet Bonanza, are also known for the possibility of sizable wins, thanks to their additional features like extra drops and wins.
Other Honourable Developer Mentions
If none of those tickle your fancy, there are plenty of other top developers on the market. The likes of Novomatic, who have been around since 1980 and are available in over 50 countries, offer some excellent options. While their graphics aren’t as flashy as others, which is why they fell just short of our list, they’re home to iconic options like the Book of Ra series and Reel King, which offer a more nostalgic feel.
There are also the likes of Evolution, who are best known for their live game options and Lightning feature, which adds random multipliers to games. Yggdrasil is another rising star in the industry, as it continues to grow its profile in terms of slot options. They won the Innovator of the Year title at the International Gaming Awards in 2017, 2018, and 2019 and offer some of the most popular slots, like Vikings Go To Valhalla and Vampire Riches.
The Top Slot Developers to Watch Out For
Although there are plenty of other slot developers offering superb options, NetEnt, Microgaming, and Pragmatic Play are the three standouts. In their top slots, they get everything right, combining intricate graphics with immersive storytelling, innovative features, and the possibility to scoop up sizable wins.
If you love surprise features, you’ll want to give NetEnt slots a go, while if you’re after themed options, Pragmatic Play will be your go-to. To be in with the opportunity to win big, you’ll want to check out Microgaming’s Mega Moolah or Immortal Romance. There are so many options on the market that no matter what you’re looking for, there’s the ideal slot for you out there, and looking through the libraries of the top developers is a good way to find them!
I’m Laura Wilson, a passionate blogger and content creator with a deep interest in business, finance, and entrepreneurship. I’ve had the opportunity to write for several premium blogs, sharing insights & practical advice for individuals & small businesses. I’m the founder and publisher of ukbusinessmag.co.uk, where I focus on creating valuable, easy-to-understand content to help UK startups & SMEs grow.
