Online Casino Software Providers in the UK ⭐ 2025

Software

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Eurostar Studios

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Gamomat

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golden rock studios — Golden Rock Studios

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Greentube

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Iron Dog Studio

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Microgaming

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Quickspin

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Relax Gaming

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Storm Gaming

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WMS

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The quality of the games at an online casino depends on the experience of the provider and the richness of its collection. For this reason, if you want to play the best games, you should choose casinos that work with the best providers. In this guide, we will talk about both.

Popular Slot Developers Overview

Although there are many providers in the online gambling sector, only some are able to outperform a certain quality level. Below, you will find brief information on the industry's giants.

Yggdrasil: It is one of the newest companies in the industry. Its games can be called “art”: They have very unique interfaces and symbols. Since all of them are developed with HTML5, all Ygdrassil slots can run on mobile devices seamlessly.
Playtech: It is one of the biggest casino software developer in the world. Their speciality is super-hero themed slots. You can find hundreds of super-hero/movie themed slot games in their collection.
Microgaming: This provider is truly a pioneer: It developed the first online casino game and opened the world’s first online casino. Through its platform, called “QuickFire”, Microgaming offers more than 600 games in different categories.
NetEnt (Net Entertainment): If you like innovative slot machines, NetEnt will be a very good option. The company is famous for developing modern slots, such as Aloha Cluster Pays. That slot requires forming clusters to win, instead of placing symbols on pay lines.
IGT: International Game Technologies is one of the biggest providers in the online gambling sector. It is alsıo the biggest lottery operator in Europe. But more important, it is the company that “invented” video slot machines.
Novomatic (Novoline): Novomatic is the master of classic video slots. Most of its games contain 5 reels / 9 lines and the majority of its collection consists of ancient Egypt themed slots. If you like classic video slots with simple rules, Novomatic is your best bet.
Play’n GO: Play N GO is a medium-sized developer which offers a collection of more than 400 slots. Most of them are licensed games, which offer you the chance to play famous TV shows and movies as slot machines.
Aristocrat. Aristocrat is a small developer, but it has lots of experience. Moreover, while its collection is small in size, all of the games are above a certain quality level.
Betsoft: Betsoft is specialized in 3D slots, and its games offer a very advanced graphics quality. It is also famous for its “To Go” brand, which contains mobile slot machines.

Most Popular Slot Games

So, what are the best games of these providers? What games should you start with? Below, you will find a list of games from the best providers listed above.

Slot Game	Description
King Kong by Playtech RTP - 95.50% Bonus rounds - Yes, 2 in total	This slot is adapted from the same-named Hollywood movie, and it offers amazing graphics before anything else. Sticky wild spins and expanded wild spins are the best features the game has: Both make wild symbols stick on reels between spins.
Mega Moolah by Microgaming RTP - 88.12% Bonus rounds - Yes, 1 bonus game	Mega Moolah holds the Guinness World of Records title for the “most paying jackpot slot”. It has simple rules but awarded more than 50.000.000 GBP to this date. We highly recommend trying it if you like progressive jackpot machines.
Thunderstruck by Microgaming RTP - 96.10% Bonus rounds - free spins	Thunderstruck is a very famous slot, which is known for its payout frequency. Triggering the bonus round is pretty easy and all pays are tripled during the free spins round. It has dated graphics but still, Thunderstruck is an excellent classic video slot, and it also has a sequel.
Game of Thrones by Microgaming RTP - 95.00% Bonus rounds - Yes, free spins + bonus game	Adapted from the same-named TV show, Game of Thrones offers an amazing winning chance with its 243 pay lines. The payout frequency will be high but don’t forget that the bet amounts will be high too. Its mini-game is actually a “heads or tails” game which offers the chance to double your prize.
Immortal Romance by Microgaming RTP - 96.86% Bonus rounds - Yes, free spins	If you are into vampires and coins, Immortal Romance is the best option for you. It offers up to 25 free spins with “wild vine” wilds. This means an entire reel can transform and filled with wild symbols. In addition, it has a killer soundtrack.
Twin Spin by NetEnt Bonus rounds - Yes, identical reels + 270.000 coins jackpot	Twin Spin is the perfect hybrid of fruit and video slots. It has identical reels feature, which means 2 reels can fill up with the same symbols and increase your winning chance. Wild symbols appear on reels 2, 3, 4, and 5.
Starburst by NetEnt Bonus rounds - Yes, Starburst Wild + 50.000 coins jackpot	Starburst is probably the most popular slot of Netent, you can see it at almost all online casinos. The gameplay is pretty simple, but the most striking feature is the Starburst Wild: When this triggers, an entire reel is turned into wild and launched into space!
Cleopatra by IGT RTP - 95.02% Bonus rounds - Yes, free spins	Cleopatra is one of the most successful ancient Egypt themed slots. It has simple rules, but it offers the chance to win 180 free spins. During this bonus round, it is possible to triple your winnings.
Miss Kitty by Aristocrat Bonus rounds - Yes, free spins + sticky wilds	Miss Kitty is a cute looking slot with lots of pay lines. In addition to free spins, the wild symbol is sticky, which means it does not disappear during spins. Speaking of free spins, you get 5 in total.
Book of Dead by Play n Go RTP - 96.21% Bonus rounds	Play N GO also develops successful Egypt themed slots and Book of Dead is one of them. It is a classic slot that offers a high winning chance. Just like Book of Ra, it offers 10 free spins with expanding symbols.
Book of Ra Deluxe by Novomatic RTP - 94.26% Bonus rounds - Yes, free spins	This is the “updated” version of a successful slot machine, Book of Ra. The new version is as good as the original and offers advanced graphics. In addition, you get 10 free spins with expanding symbols feature.
Pharaohs Fortune by IGT RTP - 96.53% Bonus rounds - Yes, free spins	Another successful Egypt themed slot machine from IGT. Your winnings are tripled during the free spins round, and it is possible to win up to 2.500.000 coins. It is actually better than Cleopatra but also a lesser known game.

Popular Developers Slots - Play for Free

You can play all the games listed above and much more free of charge on our website without download. Moreover, you do not have to be a member: Select any game you like and press the "play now" button. The game will load in a few seconds, and you will be ready to play through your browser. Play free versions ıf slots to learn everything you need to know about a game and practice as you like.

Play For Real Money

Of course, playing for free is not your only option: whenever you want, you can start playing games that you tried on our website for free in an online casino for real money. Moreover, you can get advantageous welcome bonuses by doing this and, for example, you can win free spins. You can find more information about real money gambling and casino bonuses on our website.