Slot Providers: Greatest Online Casino Software Providers

Are you tired of searching for credible, well-functioning and effective slot providers? Don’t worry, we’ve got you covered. This review will not only show you some of the most popular online casino slot providers but will also include details about developers, licensing, and other important aspects.

Best slot providers

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Explore the Best Online Slot Providers – Top 15 list

As we know how important it is for you to have access to great games, we show you the list of some of the best online slot providers below.

Microgaming logo


This online gambling software provider is one of the veterans in the world of the casino iGaming industry.

Pragmatic Play logo

Pragmatic Play

One of the leading brands in the iGaming industry providing numerous different slots and casino games.

netent logo


A very experienced and interesting online casino software provider that is known for its great interface.

Yggdrasil logo


Another very well-known brand in this industry that provides entertainment and great experience.

Evolution Gaming logo

Evolution Gaming

This provider offers a variety of services, such as casino, slots, casino live, etc.

Reel Kingdom logo

Reel Kingdom

This is a very well-liked casino games software provider that has recently become very famous, especially for its slots.

RTG Slots logo

RTG Slots

This is one of the software casino online providers that operate in many parts of the world and is also very popular.

Play’n Go logo

Play’n Go

Another big name in this industry is Play’n Go, mostly known for different types of slots.

IGT logo


This company creates fast and effective online casino software and its game list is very diverse and very popular, too.

Quickspin logo


Quckspin boasts games with great design, graphics, themes, and audio.

Novomatic logo

Novomatic Gaming

This may be one of the oldest online gaming platform providers that ranks high among its competitors.

Playtech logo


Playtech is very diverse considering the type of casino games it provides, with slots, bingo, scratch cards and live casino games being some of them.

Nolimit City logo

Nolimit City

This is a licensed and popular brand in the world of online casino game providers which comes from Sweden.

Relax Gaming logo

Relax Gaming

Yet another famous award-winning casino game software provider offering unique experiences.

Red Tiger logo

Red Tiger

Red Tiger belongs to the category of the best online casino developers and offers games with many features.

Now is the time for you to see some of the best casino sites where you can find games from top slots providers as well as some promotions you can opt for.

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      • Boku
      T&C for 20 free spins: UK players only. Enter the relevant bonus code in the ‘BonusCode’ area on the registration form The bonus code is valid until 30.09.2023. Wagering req. 40x. Free Spins will remain valid for 7 days after the issuing date. T&C for 500 free spins: UK players only. Make your first deposit with bonus code ‘NBWELCOME500’ and you will instantly start receiving your Free Spins. The first 50 Free Spins will be automatically credited on your first deposit and an additional 450 Free Spins will be randomly assigned daily. Casino Free Spins must be wagered 40 times. Valid until 30.09.2023. Free Spins will be credited by batches of 25 Free Spins. T&Cs apply. +18.
      Top Pick by Our Editors
      Casumo Casino
      96/100 Expert Rating
      100% bonus up to £25 and 20 Bonus Spins
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          • Zimpler
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          Moon Games
                New players only. 18+. Valid until further notice. Min dep £10. 1 wheel spin. Prizes and odds vary & include free spins [FS], Games bonuses [GB] and Coins. FS wins granted in GB over 4 days & valid for 3 days. GB valid on selected games only. WR: 35x Game bonus. GB wins cap: £100 + initial bonus. UK: deposit balance can be withdrawn at any time. Country restrictions apply. 18+. Full T&C apply.
                Amazon Slots
                UP TO 500 FREE SPINS ON STARBURST
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                      Top Pick by Our Editors
                      BetVictor Casino
                      95/100 Expert Rating
                      Wager £10 Get £30 + 100 Free Spins
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                          18+ New customers only. Opt in and wager £10 on selected games within 7 days of registration. Get 3 x £10 bonuses for selected games with up to 40x wagering plus 100 Free Spins on Fishin’ Frenzy. Bonuses expire in 30 days. Max redeemable from bonuses is £750. Card payments only. T&C’s Apply. | Please gamble responsibly.
                          Editor's Top Pick
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                                Paddy Power
                                Deposit £10, Play with £40 + 100 Free Spins
                                      New UK and IRL customers only. Deposits through debit cards only. 40x wagering requirement on bonus, within 7 days, on eligible slot games. Winnings from bonus capped at £500. Spins available upon completion of bonus. Full T&Cs apply.
                                      Top Pick by Our Editors
                                      Kwiff Casino
                                      94/100 Expert Rating
                                      Grab up to 200 Cash Free Spins on Book of Dead! Wager £20 on slots and Get 40 Cash Free Spins for five consecutive days.
                                            18+ new customers only. £20 stake on slots each day within 5 days of 1st deposit to qualify. £0.1 Spins on Book of Dead. £250 total max withdrawal. Full T&Cs apply.
                                            Top Pick by Our Editors
                                            94/100 Expert Rating
                                            Get 100% up to £200 + 100 FREE Spins!
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                                                18+,, Full T&Cs apply.. New reg only. Opt in & deposit £10, £50 or £100 within 14 days & further 7 days to wager cash stakes 50x to unlock reward (up to £200 on first deposit). Wagering/game contributions vary. Up to 100 free spins x10p added to Big Bass Splash after depositing & wagering, 3 day expiry.
                                                Wicked Jackpot
                                                Deposit & Spin The Wheel To Win Up To 450 Spins
                                                      New players only. 18+. Valid until further notice. Min dep £10. 1 wheel spin. Wheel prizes and odds vary & include free spins [FS], Game Bonus [GB], and Coins. FS wins granted in GB over 5 days & valid for 3 days. GB valid on selected games only. WR: 35x Games Bonus;35x FS Wins. GB wins cap: £100 + initial bonus. UK: deposit balance can be withdrawn at any time. Country restrictions apply. Full T&C apply
                                                      Stake £10 On Book Of Dead & Get 50 FREE Spins
                                                            18+, New customers only, register, deposit, and stake £10 on Book Of Dead, and receive 50 Free spins on Book Of Dead. 7 day bonus expiry. Ends 31/12/23 at 23:59 GMT. Full T&Cs Apply.

                                                            What are Actually Slot Providers and Online Casino Software Developers?

                                                            1. To begin with, casino games developers are companies that are in charge of creating casino and slot games. In other words, online casino game developers come up with the game theme, graphics, design, gameplay, audio and all similar stuff.
                                                            1. Once they come up with all these ideas, i.e. how everything should look, sound, and function, their next goal is to put all this into practice. They hire slot game developers who write codes in order for games to work. One of the necessary processes here is testing.
                                                            1. A game can be released after it has gone through various tests. Each brand’s main goal is to develop the best online casino software. After developing games, casino slot providers supply slot gaming companies with games.
                                                            1. Their goal is to distribute a variety of games that casino games companies ask for. There are many online gambling platform providers as well as developers, such as different online casino software solutions that develop and supply lots of different online casino sites.

                                                            Online Casino Software Providers Licencing

                                                            Any company or person who makes slot machines should possess a proper licence. Depending on the country or region one company is based in, there may be different operating licences.

                                                            In general, the best online casino providers should have a proper and legit gaming and operating licence. That said, this review focuses on top slot providers with the aforementioned licence type only. We can mention Relax Gaming, Playtech, Evolution Gaming, RTG, and many more.

                                                            How We Rate and Review Slot Game Providers

                                                            This is one of the casino software reviews that pays attention to many bits and pieces when determining the right slot games for you. Some of the key aspects we take into account include safety and licensing, number and type of games, design, gameplay, wagering style, users’ ratings, etc.

                                                            Safety and Licencing

                                                            It goes without saying that one of the most important factors contributing to a good casino gaming experience relates to safety and security. Most of the time, casino game providers that hold a proper gaming licence are also the ones that are well-protected.

                                                            Number and Type of Games

                                                            Of course, the number of different games a slot provider is ready to launch is what we consider, too. Not only that, but we also focus on different themes of the games supplied by operators. The more diverse the selection is, the more fun and entertaining players’ experience will be.

                                                            Design, Gameplay & Wagering Style

                                                            Providing games with a high-quality design is important for customers because this can largely expand their gaming experience. Similarly, the gameplay may be different for some casino game categories, and users can choose the ones with gameplay that fits them most.

                                                            Casino games also differ according to their wagering style. As not everyone likes every wagering style, we aim to describe different ways the wagering process can be done so that players can get to know them and choose the most suitable slot payment method for them. 

                                                            Users’ Ratings

                                                            Your opinion matters to us. Therefore, we always look for users’ ratings of slots providers. We pay attention to their comments regarding the most important casino slot provider elements and compare them to our own reviews and tests, after which we come up with our own ratings.

                                                            Slot Providers Mobile Compatibility

                                                            As many of you prefer using mobile devices to desktop or laptop computers, there are slot providers whose goal is to make your mobile betting experience as best as possible.

                                                            They usually do this by trying to make their games have a responsive design. This means that games can easily adapt to different screen sizes and resolutions. Also, it is always important for mobile casino game providers to create mobile games without any bugs that run smoothly and fast.

                                                            Among many, some of the most popular casino mobile game providers are Pragmatic Play, Play’n Go, Booongo, and more.


                                                            In the end, you can check our FAQ section and get some quick info about slot providers and developers.

                                                            A slot provider is a company that produces and supplies online casino websites with games. You can find plenty of different providers online that feature numerous games.

                                                            In the sea of online slot developers, you may find the ones like NetEnt, Microgaming, Quickspin, Novomatic Gaming, Red Tiger, and other similar developers to be some of the most well-liked among users.

                                                            A slot provider’s pay rate depends on numerous factors. Since there are various slot providers out there, it is advisable that you can check slot providers whose games you like to play and see their pay rate percentage along the way, especially because it is subject to change on various operators’ websites.

                                                            To get a clearer picture of a good slot provider, you should pay attention to a couple of things. First, you will need to check whether a certain provider has a gaming licence.

                                                            Next, you can examine its list of games, as well as its gameplay, wagering style, themes, graphics, design, etc. You can also check other players’ ratings of some providers and find out more about them this way.

                                                            Some casino software developers may make free games. Typically, their demo game releases are free to play. When it comes to online casino game software developers that work for casinos where you need to use real funds to wager, this type of developer usually doesn’t make free games.

                                                            All slot providers that you can find on our website are legit and licensed. However, some providers may not be licence holders on the web. This is why we recommend that you stick with us, as we will make sure to feature the best slot providers and developers that are fully legal and licensed.

                                                            You can find a large number of casino games made by various slot providers on the lists that we have on this website. For more information, you can check some other casino games and slot reviews on our site.

                                                            There are several providers that have over 1,000 slots and casino games. Some of the slot providers with the highest number of slots are Yggdrasil, Microgaming, and NetEnt. It is important to mention that there are new providers emerging and that current providers are constantly launching new slots.

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                                                            18+ | Commercial Content | T&Cs apply | Wagering and T&Cs apply | Play Responsibly | Advertising Disclosure
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