Who are the Best Online Slots Developers?

slot developers at work

The UK slots industry has seen so many changes in the past few decades. The quality of the games available has just kept rising. The graphics are amazing and 3D games are becoming more popular. It’s all the work of an excellent set of online slots developers. As part of our ultimate slots guide it’s time to take a look at some of the developers of the most popular online slots here at Goldrushslots.co.uk.


Yggdrasil Slots

With their games being notable for having some of the biggest jackpots, Yggdrasil has made a name for itself and has become one of the elder statesmen of the industry. The company boasts games with the best graphics, such as Orient Express and Niagara Falls, and thrilling gameplay with handfuls of bonus features, such as on Vikings Go Berzerk.

The name Yggdrasil is an old norse translation that refers to a cosmic tree that connects 9 worlds according to the 13th-century historian Snorri Sturluson. In the 21st century, Yggdrasil Gaming is a name that now embodies the provision of the highest quality online gaming solutions and "make magic happen". They also make many other things happen too:


The first major game provider to make the full switch to HTML5 in 2014, Yggdrasil now use iSENSE 2.0 as their client framework which contains the fastest and best loading algorithm money can buy, ensuring that their top-notch effects and animations are smooth and sleek on desktop and mobile.


Yggdrasil have an eclectic library of games to choose from such as "2 Gods Zeus versus Thor", "Football Glory", "Vault of Fortune", "All Star Knockout Ultra Gamble" and "Neon Rust" to ensure that whatever flavour of game you are looking for, you can find experience it right here. See more top Yggdrasil slots here


Complying with the industry's best practices to ensure fully responsible gaming is paramount to Yggdrasil and they have spent years forging connections with licensing regulators like the Malta Gaming Authority, GB Gambling Commission and the National Gambling Office of Romania. This provides their service of games with integrity you can trust. They also audit their Information Security Management System annually so that you know your data is safely secured alongside Yggdrasil's policies.


A dedicated client zone called "Source", in-game promotional tools such as Prize Drops, Missions and In-game Tournaments from their package "Boost" and the ability to replay customers Big Wins and sharing in Tournament Leaderboards with "Brag" are all services that Yggdrasil provide to keep your gaming business running smoothly and customers happy with a great service.

"We make it happen" is a strong motto to live by and when Yggdrasil start making connections for your company it will feel like the cosmos has aligned just for you. [1.0]


Microgaming Slots

A small tranquil island in the middle of the Irish sea is not where you would expect to find the modern headquarters of one of the leading online gaming software developers, but rising 5 stories into the sky on the Isle of Man, Sixty Two Douglas Promenade is where the company Microgaming calls home.

Being at the forefront of online gaming since the birth of the company, Microgaming developed the first online casino software in the world in 1994, and a decade later were also the first to develop these games for mobile.

Looking down their roster of games it's not hard to see how this huge company has developed over the years to hold the worlds biggest progressive jackpot network. When you consider that this has paid out over $1.2 billion to customers its little wonder that their new HQ, opened in 2017, includes a fully equipped gym, social areas, a coffee shop, a roof garden and a library.

With over 800 casino games including branded games such as Game of Thrones, Lara Croft and Jurassic World, and a plethora of other household titles, clients know when using Microgaming's Casino that they have access to the best online games around.

Their slots also include brands such as Bridesmaids and Terminator 2 and their bespoke approach to clients gives them a host of options all aimed at configuring their games so that it is customised in an optimal way for operators.

Microgaming PlayItForward

Away from all the headlines and numbers, Microgaming is leading the way in fair and responsible gaming being a founding member of eCOGRA (e-Commerce Online Gaming Regulation and Assurance) which brings trust to both clients and customers. If this wasn't enough their initiative, Microgaming PlayItForward helps support important issues such as sport, education and health. [1.1]

Microgaming has been bringing games to customers lives for many years and in doing so they have been playing the game of life impeccably. It only looks set to get better.

Microgaming Summary

When you see this name on a game you know an entertaining time lies ahead. For 20 years they have been releasing a string of great games. They were busy before that though and in 1994 introduced the first-ever online casino. Four years later, Microgaming released its first progressive jackpot game and ‘Cash Splash’ was a great success.

It's been one big hit after another since then. Games such as ‘Thunderstruck,’ ‘Avalon’ and ‘Game of Thrones’ have all enjoyed great success. They remain the largest global provider of software and invest heavily in development and research. That ensures a successful future and great games for us to play. Take a look at our top 5 microgaming slots to play right now.


NetEnt Slots

Better known as NetEnt, they have a big year coming up in 2021. Their business has been floated on several stock exchanges and they have offices in Sweden and Malta. This is a company that just keeps pumping out top sot games and most with extremely high RTPs. Games such as ‘Twin Spin’ and ‘Starburst’ continue to be extremely popular. Check out the netent slots to look out for in 2021

In the world of online and retail gaming, numbers are crucial and Netent can boast some of the most impressive around:

  • Pioneers in the gaming world for over 20 years.
  • 58.3 billion gaming transactions successfully handled in 2019 alone.
  • Over 1000 employees spread across the globe.
  • Over 200 customers, which amount to covering the largest game operators in the world.
  • 200 games to choose from including Vikings video slot, Lost Relics, Starburst, Jumanji and Narcos video slots to name just a few.

The standout reason that Netent has for being stratospherically successful and what caused them to exponentially expand over the last 5 years is that they understand the gaming world from a casino owners perspective. Whether you are a seasoned owner or fresh to the gaming world, Netent offer a wide range of services to help plug the gaps you are less experienced in or would rather pay someone else to provide:

Business Intelligence:

Netent collects and provides information on a range of performance factors that help to keep you informed and up to date with the most recent data and allows you to understand your player's needs and interests to ensure your casino runs at its highest potential.

Market Regulations:

As one of the original casino providers in heavily regulated markets such as Italy as far back as 2011, Netent claim that they are more active in these markets than any other company. They fully understand the specifics of each market and their close connections within these will ensure a smooth launch whether you are based in Italy, Denmark, Spain, UK, New Jersey, Romania, Portugal, the Czech Republic or a whole host of other countries.

If you are looking for top class games to host in your casino, Netent provides their CasinoModule package providing everything you need including a top-performing portfolio of games, multi-channel content, hassle-free integration and a reliable back office. This company could be the golden ticket you've been looking for. [1.2]


Novomatic Slots

From Austria comes this top slot developer. This year marks 40 years in the gaming industry for its creator Johann F. Graf.  He probably didn’t imagine that decades later their annual turnover would be over €3.2 billion. Big hits for Novomatic include ‘Book of Ra’ and its many sequels and ‘Hoffmania.’

continually innovate and push the boundaries. With around €100 million spent on research and development across their 29 centres in 16 countries, it's not hard to see why Novamatic are Europe's number 1 operator and producer of gaming technology. What is even more impressive is when you consider that the company was founded in Austria in 1980 and has since then expanded to sites across over 50 countries and now operates with clients in over 70 countries on 2,100 sites around the globe.

The founder Johann F. Graf attributes the mammoth success of Novamatic to its approach of being a service partner in the lottery segment as well as a producer of high-tech gaming equipment and operators of both physical and electronic casinos and sports betting outlets. This has allowed Novomatic to grow into a company that can provide anything a client could need across the entire gaming spectrum.

Their library of over 320 slot games includes the household names of "Book of Atlantis", "Voodoo Fortunes", "Book of Ra" and the complete series of "Lord of the Ocean". Their high-end gaming platform also includes mobile, social and online gaming with omni-channel solutions and ancillary products to provide anything and everything for players.

To help you keep your business running smoothly, Novamatic can also provide management systems and cash management, sports betting solutions with media technologies, and a range of cabinets that include:

  • Slot Machines, such as the Funmaster 2.27
  • Electronic table cabinets, such as the Novostar SL 1.27
  • Novamatic self-service betting terminals
  • Instant Ticket Vending Machines

Alongside these award-winning services, Novamatic takes responsibility within the community by sponsoring activities, providing volunteer work and giving donations. Their Green policies aim to "Minimize consumption or energy and resources as well as minimizing emissions and waste" and provide a "Contribution to the protection of the environment".

If 40 years at the top of the industry and mind-boggling innovation across all aspects of the company aren't enough to convince you to enlist the services of Novamatic then you could be waiting a long time to find a company anywhere near as capable. I would give it 40 years or so.


NextGen Gaming Slots

Though they may have had humble beginnings starting out in the UK, NextGen Gaming has seen major success across the pond more than almost any other developer. This brand is more well-known for continuing the tradition of classic slot machines by focusing on themes, which shown best in their games Imperial Fruits and Sweet Bonanza. The brand has a slew of other themed games and that's why NextGen is one of the most fun online slot developers operating today.


Playtech Casino & Slots Games

For the past 21 years, Playtech has been releasing one hit game after another. They have been busy producing other casino, sports betting, and bingo games too. It’s for the slot games they are best known though. Over the years they have made many acquisitions, including Ash Gaming and Virtual Fusion making their brand ever stronger. Top games in their extensive library include the ‘Age of the Gods’ series, several classic Batman slots (with progressive jackpots) and ‘Frankie Dettori’s Magic Seven.’

London Stock Exchange.

Playtech has a very simple vision: to remove the barrier of technology from customers while simultaneously allowing them to use the most innovative and recent technology. In today's fast-paced and ever-changing gaming environment, this outlook could be a welcome incentive to potential clients looking to grow their business.

With 140 global licensees in 20 regulated jurisdictions, Playtech are experienced world players in the gaming community and their values support the principles of the Universal Declaration of Human Rights and the International Labour Organisation's Declaration on Fundamental Principles and Rights at Work. This respect they have for customers and employees has been a big factor in allowing the company to grow into a global FTSE 250 company that clients can trust to provide high-quality and ethical gambling and financial trading solutions.

To help your business run smoothly, Playtech offers a range of tools to keep you on track for amazing results:

  • Information management system: Gives you full control as an operator to all relevant data so you can make more informed decisions for marketing and streamline your expenses.
  • Business Intelligence Technology: All the data you need to drive your growth in an innovative package exclusive to Playtech.
  • Playtech Portal: An open framework providing all customer-facing front-end solutions across any channel or device.
  • Playtech Open Platform: Instant access to over 3,000 of the best online and mobile games.

Their online blog also keeps clients up to date with relevant information about the industry as a whole and how Playtech are dealing with specific situations themselves.

Playtech are a company focused not only around the growth and ongoing success of themselves and their clients but also on the way they do business. I would say they're doing business very well.


Barcrest & Scientific Games

Experience is the name of the game here as Barcrest go all the way back to 1968. UK Pub slots and land-based players will be familiar with their slot machines. They have had a few different owners over the years but have excelled at keeping up with the times. That included making the move up to five reels and the option to play at a higher RTP.  It was Barcrest who came up with the classic game ‘Rainbow Riches’ and they are a major player when it comes to the online slots industry.

Although having a staff base of 1,600 people may be small in comparison to other online gaming providers, don't let the numbers fool you when it comes to Scientific Games. This company provides some of the best content in the world from their award-winning platforms and has a client list that includes the behemoths of Leo Vegas, William Hill and Mr Green to name a few.

So what makes Scientific Games so special that these internationally known brands want them to provide their gaming experience? Here are a few reasons:

  • Innovative and exclusive in-house content
  • OGS implementation (Open Gaming System)
  • Instant access to a huge catalogue of games
  • Continually new functionalities developed with a mobile focus in mind

The OGS provided by Scientific Games opens a new experience for clients that allow them to pick the best content and games in a seamless operation so that their brands can be specifically tailored towards their clients.

A major global influence that Scientific Games have is their provision of lottery games. Currently, they are business partners to lotteries in over 50 countries making them the most trusted lottery supplier in the world. They go by their namesake in claiming there is a science behind making some of the most successful lottery games ever and along with this provide marketing and insights for their top-sellers, the most advances technology in the field and omni-channel solutions.

To fully integrate themselves within the gaming community, Scientific Games also host an online blog that provides insights into their world with articles such as "Narratives in Slots - how to tell a great story" and "Setting up a UX Team in the gaming and sports industry".

As Scientific Games are so heavily involved with State Lotteries and dot.com companies they ensure that they adhere to every rule and regulation set out by Commissions around the world to provide responsible gambling. Mix all this together and Scientific Games' vision "To be the world's leading supplier of digital gaming, sports betting and iLottery Solutions" looks like it could be close on the horizon. [1.3]



Betsoft was established in 1999 and it is in the area of visual effects that they specialise in. They have been doing a great job with 3D slot games. These cinematic slots look absolutely brilliant and games such as ‘Sugar Pop’ and ‘Under the Bed’ show just how much the slot world has progressed in recent years.  Heaven knows what they have up their sleeves for the future.

With a vast client list and games available in over 500 casinos around the globe, Betsoft is a market leader in the world of iGaming products. Since their founding in 2006 the company have won a plethora of awards and titles including a ToGo title and a Slots3 title, as well as a license from the Malta Gaming Authority and certification from AAMS in the Italian market.

If you're looking for top class desktop games, Betsoft claims to have the best in the world with their flagship product being their Slots3 collection. With 3D cinematic graphics and animation, this huge and varied collection of games includes the bundles of:

  • Slots3 Arcade: fast-paced action for high-value players that potentially pay out big winnings.
  • Slots 3 Interactive: Story style games to fully immerse yourself in a new concept that combines modern video games with video slots, considered an evolution in the world of iGaming.

You can, of course, select from the classic table games such as Blackjack, Roulette and as many versions of poker as you can think of.

Targeted at the seamless running of operations for casino operators, Betsoft has a global network of staff that work round the clock to ensure their games are the best money can buy with the string of excellence highlighted throughout all departments.

Having made the switch from flash to modern HTML5 technology in 2016, Betsoft continues to be at the forefront of iGaming in the 21st century. This includes a variety of mobile-based games and continual research and development for new delivery platforms.

The ultimate mission for Betsoft is "to increase the profitability of our clients' own businesses through continuous improvement of our own products and services". This ethos drives the company to remain leaders in the iGaming markets of Europe and the Americas, and their client base is only set to keep growing. [1.4]


These are just a few of many companies in the online slots industry that have state-of-the-art games and designs. Though the industry is dense and the list of developers is never-ending, it isn't hard for one to rise to the top if it has unique gameplay and an alluring design.