What is Online Casino Software?

“Casino software” describes the various platforms and technologies on which online casino games are played. This can include:

  • How the games look and feel
  • The technology hosting the games (cloud-based, downloaded software, mobile app)
  • Game fairness, RTP and payouts
  • Stylistic elements (bonuses, graphic, gameplay)
  • Types of games (slots, table games, live dealer games etc)

A single online casino can incorporate software from dozens of different game developers, leading to a multitude of gaming experiences within a single platform. For example, Microgaming and NetEnt are both famous and successful game developers—but the playing experience is vastly different for each.

Online casino software is arguably the most crucial differentiator between top-class and bottom-rung casinos.

The Best UK Casinos Not On Gamstop

24play bet logo

950% Welcome Bonus up to £6,000!

Overall, is a great option whether you’re looking for a sportsbook, casino or live betting. With competitively priced odds and a wide range of markets available, it is sure to have something for everyone. The site is easy to use and offers great promotions that can help you make the most out of your betting experience.

betti casino

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Betti Casino is an excellent online gaming platform with an elite game collection supported by the industry's most trusted software vendors. The slots and live casino sections will more than satisfy your gambling needs.

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Royal Lama casino was founded in 2023 and has already won over online gamblers from all around the world, including the United Kingdom. The platform is well-known for offering a diverse selection of games from prominent gaming software suppliers. Furthermore, this online casino provides numerous profitable bonus possibilities on a regular basis.

mystake casino review

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MyStake Casino is one of the most engaging, high-quality and moreish non-GamStop casinos we’ve reviewed this year. Every important box is ticked with authority, creating an online gaming experience like no other in 2022!


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Players have highly praised the brand-new online casino GoldenBet for its distinctive features and large selection of games. Because to its fantastic bonus offers and excellent sports coverage, the casino is a player favorite. The review of GoldenBet Casino covers the differing customer perspectives and provides useful data on the benefits and drawbacks of the casino.


250% Welcome Bonus up to €1,500

There are not many non-GamStop casinos out there which look as professional and elite as FreshBet. Their design team has nailed the aesthetic and their offers, games and live sports betting infrastructure completes the look. FreshBet provides the best gaming material for its customers by providing fair gaming, exclusive mini games, secure and diverse payment options, multi currency, and 24-hour assistance. Their primary focus is customer happiness!

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Mr Slots Club is a great option if you’re looking for a casino, sportsbook or live betting. It have something for everyone with their competitively priced odds and a wide range of markets available. The site offers great promotions that can help you make the most out of your betting experience.

blood moon casino

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Blood Moon Casino was founded in 2023 with the goal of providing its gamers with an exceptional experience. The casino is licenced and operates in accordance with Curacao law. As previously stated, Blood Moon Casino is a land of wild adventures, with its website themed after our favourite vampires.


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UK Software Casinos Without GamStop

When looking for new online casinos not on GamStop, it’s paramount that they have high-quality casino software—if not, players will be unable to enjoy their favourite games.

Since every developer builds their games in a unique way, there are therefore consistent and notable differences between developers. So, let’s take a look at some of the best game providers at non-GamStop online casinos.



One of the oldest casino game providers in the world, Microgaming casino sites are highly coveted by players. Microgaming is known for producing games which are exceptionally volatile and highly-paying. Its progressive jackpot game Mega Moolah is the highest-paying online casino game in history, unleashing a jackpot of over €19 million in 2021.

However, Microgaming casino sites don’t stock games by other providers. Players may also have to download desktop software or mobile apps to play Microgaming games, but thankfully most Microgaming casino sites now support in-browser play.

The only downside is that Microgaming casino games are usually quite basic in terms of visuals, interactiveness and bonus rounds.


NetEnt games are probably the most popular in the industry. Famous for blockbuster graphics, NetEnt slots are often closer to video games than classic slots. NetEnt online casinos allow rapid in-browser play on any device. Even better, most of their games can be played for free in demo mode—something that other casinos not on GamStop might not offer.

While best-known for slots, NetEnt casino games also include progressive jackpots, RNG table games and an incredibly immersive live dealer suite. The Swedish giant’s games are innovative, beautiful and, we’re happy to report, regularly available at non-GamStop casinos!


While they sometimes fly under the radar, Novomatic slots are some of the biggest in the entire industry! For example, Book of Ra is played at most of the world’s online casinos, reeling in thousands of players every single day. The game loads quickly and offers a max return of 5,000x stake and has a 30% hit frequency.

Other slots at Novomatic online casinos are Sizzling Hot Deluxe, Dolphin’s Pearl, and Lucky Lady’s Charm. While none of these slots offer Pixar-level graphics or storylines, they provide something even more valuable: big wins. You’ll find Novomatic slots at most casinos not on GamStop.


Real Time Gaming

Real Time Gaming was founded in 1998 in Atlanta, and has become one of the biggest American online gaming brands—despite moving its operations to Costa Rica. RTG online casinos are best known for their fun array of online slots. Games like Cleopatra’s Gold, Casino War, Aztec Millions and Mayan Queen may not have the same brilliance as NetEnt slots, but they pay generously and attract millions of players around the world.

Most games are available for instant play, though some RTG casinos still use downloadable desktop software.



Betsoft casinos are a perennial hit among online casino players, yet despite that popularity, the developer only has about 200 games to its name—Microgaming released half that number in 2021 alone!

You’ll recognise Betsoft online casino games by their old-fashioned graphics and animations. Unlike some modern providers, Betsoft doesn’t try to be innovative—it just produces solid, enjoyable games for its loyal player base. Check out “The Slotfather” series or Greedy Goblins to see Betsoft’s best work!

Evolution Gaming

Evolution Gaming

Evolution Gaming casinos have been the runaway kings of live dealer games for over a decade. There is no one in the industry that can match the diversity of games (blackjack, roulette, baccarat, sic bo, poker variations, bingo, and much more) or the quality of execution.

Evolution Gaming online casino software is incredibly polished. It’s easy to navigate and the design is perfectly modern. Most importantly, the company employs over 3,000 professional dealers—by far the most charming, experienced and entertaining in the business. Players can even enjoy 15+ languages at more than 700 tables worldwide.

All games available in-browser for instant play.

Rival Gaming

Rival Gaming

Founded in 2005, Rival Gaming now boasts over 250 games that can be played on any device. Their famous i-Slots are available in many Rival Gaming casinos—these trademarked games feature an interactive storyline that sets them apart from regular slots.

Rival Gaming online casinos find a nice balance between building sufficiently complex and attractive games, without over-engineering and overwhelming players.

Pragmatic Play

Pragmatic Play

Pragmatic Play is one of the more adventurous online casino game providers. Their goal is not simply to create fun games—it’s to dazzle and delight players with groundbreaking graphics, innovative game modes and high-volatility payouts.

While Pragmatic Play casinos are best-known for Wolf Gold and the John Hunter video slots, a small number also supply RNG and live dealer table games! You can tell a true Pragmatic Play casino by the inclusion of live Bonanza Candyland—the live dealer adaptation of their iconic video slot!



While they sometimes fly under the radar, Thunderkick online casinos punch far above their weight. An independent Swedish game developer with bold ideas, Thunderkick has risen to prominence thanks to its superbly entertaining games, built on its absurdly high-quality casino software.

The casino is well-known for creating games that are fair, with generous and extremely consistent payouts—something that veteran online casino players do not take for granted. The developer’s Beat the Beast series is particularly popular, with nearly a dozen variations.

Casinos Not Blocked by GamStop Software

If you’re new to the world of non-GamStop online casinos, we’ve got great news: there are dozens to choose from! These are all safe, high-quality online casinos which are not blocked by GamStop software. We have reviewed all the best, brightest and newest casinos and you can find our favourites right here:

Games not on GamStop

You might be worrying that some of your favourite games will be prohibited by GamStop—we’re happy to report that this is very unlikely!

The game providers we’ve described above are only some of the many, many developers whose games are available on non-GamStop casinos. And while it’s true that, for example, a NetEnt online casino might not stock all NetEnt games, there are no specific games which are restricted by GamStop.


The software at today’s non-GamStop casinos is every bit as polished and high-quality as anywhere else. From Microgaming casino sites to those hosting 30 or 40+ game developers, we are enjoying a golden era in online gaming.

It used to be that every casino required downloadable software that was clunky, slow, and prone to disconnection. Now we have non-GamStop casinos with thousands of world-class games, hosted on slick and high-performance platforms that are accessible on any device, on any operating system.

We are entering a real golden age of online casino gaming!