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Top UK Online Slots & Game Providers 2019

Online video slots have become increasingly popular over the years. While they used to simply be virtual versions of slots available at land-based casinos, providers now incorporate elements that are unique to online casino slots. By far the most popular slots are set up in a five by three grid with traditional-looking spinning reels. Wild symbols and scatters, or free spin symbols, are a mainstay of bonus features and are an integral part the online slot machine gameplay. Wild cards are symbols that can substitute for anything you need to make a win. The most common betting limits are .10 credits at the low end and 100 credits per spin on the high end. That said there are all sorts of variations and some slots may allow up to 200 credits per spin. There are many popular themes for slots. Among the most common are Irish, Asian, Egyptian, sci-fi and seasonal games such as those designed for Halloween or Christmas. Another popular type of slot is the “cluster pay.” These slots don’t go by the normal pay line payment system. Instead you have to land a certain number of symbols in a cluster. These clusters will then disappear from the board and the icons above them will cascade down into place, giving you additional chances of winning. The last common feature is the multiplier. With each bump up of the multiplier it adds a level to your winnings. For example, a multiplier of two would double your winnings. A multiplier or three would triple your winnings.
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Best rated GiG Games

GiG logo

GiG stands for Gaming Innovation Group. They are a cloud-based provider that takes a different tact towards online gaming than others. Based in Spain, their license is held from Malta, and the company is listed on the Oslo, Norway Stock Exchange. Most impressive is their 97 percent return to player average. They have a small catalogue currently, with just 10 games; they include one roulette game and one card game.

Steven Jones

UK Casino Expert

GiG is not like other gaming providers. I’m going to keep a close eye on what they develop in the future. I could see big things for them as cloud-based systems become more and more popular. It will be interesting to see if they keep their focus on casino gaming or else end up selling cloud-based services.

Wild Reels

A fairly basic video slot machine with one addition – a golden record is your wild. There is a 500-credit jackpot available here but no progressive jackpot. It is set in a five-reel, three-row board with only 10 pay lines. But every spin features a wild reel which can increase your chances of a win.

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Book Of Souls

Book of Souls places a woman in the role of Indiana Jones. She travels the world seeking archaeological secrets and maybe fame and fortune. Like other GiG games, it has 10 pay lines on a grid of five reels and three rows. The Snake Spins feature is randomly triggered. There is an RTP of 96.90% in this slot.

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Fruit Slot

This is not an old-fashioned Vegas slot machine, although it does have the three-reel, one-row configuration. This has a 96.75% return player average and a 2,500 credit jackpot, but no wilds or free spins. The game’s logo is the jackpot symbol.

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Kalamba slot games

Best rated Kalamba Games

Kalamba slot games

Kalamba is a very small and very new provider of online slot machines. Based in Malta and Krakow and licensed in Malta, they use their small team to try and develop games that will be popular in the international market. They currently have released approximately 30-plus games. The average return to players for these games is 96.21%, and the most you can win is an exciting 600,000 credits.

Harry Brown

Math Analyst

Kalamba is one of several emerging online slot machine developers. With all the new ones coming out I always say to keep them on your radar but don’t be surprised if they disappear. That said the games Kalamba has put out have been very good so they could be one of the companies that stays around for a while.

Blood Moon Express

This horror fueled game would be perfect to play on Halloween, and has a thrillingly high return to player average of 97.48%. It has a cascading reel formation, starting with two rows and finishing with six, and there are 60 ways to win on any spin. Mission features collect symbols for big payouts.

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Operation: Diamond Hunt

Another game with an odd layout this game has you chasing diamonds. In a new development for online slot machines you can actually buy “free spins” - that each have a different feature. The return to player average is 97.79%. It has a fittingly diamond-like formation with six reels from three to five rows each.

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Wildcraft

Set deep in the world of magic Wildcraft is yet another Kalamba game with an odd formation that will take some getting used to. There are multiple wilds and the chance to get free spins. The return to player average is 96.21% and you can win up to 400 times your bet.

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Relax Gaming

Best rated Relax Gaming Games

Relax Gaming

Relax Gaming is one of the big boys in the online slot machine business. With a huge staff they've man-aged to release well over 280 games. They have the old fashioned fruit machines and the cutting edge mul-ti-level games that people expect these days. They are long established in the industry and have a near-record breaking 99.6% return to player average. They hold licenses in Alderney, Malta, the United King-dom, and Romania. The most you can win from a Relax Gaming slot is 6,000 credits.

Jacob Clarke

Professional Gambler

What can I say? Everyone who is anyone knows about Relax Gaming. They are huge and put their money where their mouth is. They keep coming out with more games and I haven’t found any flaws in any one of them yet. If you know nothing about slots start out with a Relax Gaming title. You won’t be disappointed.

Epic Joker

The original old-style Vegas fruit machine but with a large betting range of .05 to 200 credits. The jackpot total is 500 credits. There are two bonuses – the Joker Re-spin, which is triggered by symbol stacks, and the Super Mode, which awards free spins for nine alike symbols.

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Caveman Bob

This is the opposite of Epic Joker. One of the most complicated games ever released for slots, you'll follow Bob around the five-reel board that has 20 pay lines. Lots of fun here with six bonus games featuring blizzards, fires and caves. The RTP is 96.49%.

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It’s Time

This game is MMA themed, with Bruce Buffer as the lead character. Win the jackpot of 250 credits, and play any of the three bonus rounds, which can be triggered randomly or when the fighter symbols are stacked. The return to player average here is a very low 95%.

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Nolimit City

Best rated Nolimit City Games

Nolimit City

Nolimit City was created with the idea of making games specifically for the mobile market. A mix of designers from Sweden and India come together to build unique games. They hold licenses in the United Kingdom and Malta. Currently their catalogue runs to about 25 games, with most having 20 pay lines but rising to 16,807 ways to win up to more than 1300 times your bet. Most of the games have a medium risk variance and a 96.22% average return to the player.

Steven Jones

UK Casino Expert

Companies like Nolimit City really are the future of our industry. People are moving away from gambling on their laptops or desktops. A company designed for the mobile market is always going to have an advantage when it comes to game design. Nolimit City has that level of expertise and it shows in the games they are able to produce.

Kitchen Drama: BBQ Frenzy

Fiery Chili or Spicy Barbecue? There are five reels and 20 pay lines here, as well as two bonus games and a 500-credit jackpot. Sheriff Wilds during the Wild BBQ free spins round can augment your multipliers.

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Casino Win Spin

An old-fashioned fruit machine with a difference thanks to the Spin Until You Win feature, which gives you multiple wilds and decent multipliers. There is a 96.74% return to player average in this medium variance game. Take your chance at the 500-credit jackpot.

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Thor: Hammer Time

Five bonus games as well as a 300-credit jackpot await you in this Norwegian mythical game. The return to player average is 96.03%. Thor’s Lightning bonus symbol appearing on the fifth reel triggers a feature with multipliers and sticky wild reels.

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BTG slot games

Best rated Big Time Gaming Games

BTG slot games

Big Time Gaming is sort of new to the online slot machine world, with only 34 titles at this time. They have over 30 years’ experience designing non casino games and have recently moved into the online slot machine sector, and now hold licenses in the UK, Alderney, British Columbia, and Gibraltar, among others, and are based out of Australia. The games are rated as highly volatile. Their highest RTP game is White Rabbit, with 97.7%. Maximum wins top out at 15,000 times one’s bet. They created Megaways, which has taken the slots world by storm.

Jacob Clarke

Professional Gambler

Big Time Gaming is interesting. Most of the people who develop online slot machines started their company with the idea of doing so. Not Big Time Gaming who were developed for the general gaming sector. That gives them a different view on what games people will play and they often hit the nail right on the head.

Who Wants To Be A Millionaire Mystery Box

Based on the popular television show, this exciting slot contains a mystery box that can be opened to reveal another symbol. It also gives you the ability to gamble to double your winnings after every win. There are 24 free spins in the scatter trigger, and a 50x multiplier.

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Lil Devil

Do you want to chase the angel or the devil? This slot has a 96.43% RTP average and is highly volatile. It features six reels and 4096 win lines that include a 144x multiplier. Collect 40 heart symbols to start the enhanced free spins round.

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Book of Gods

With four gods as the major icons, add in free spins and cloning symbols and you get a challenging game that is much harder than it looks. There are three bonus rounds and a jackpot up for grabs totalling 300 credits. Use the meter on the right to see how much you could “pay” to trigger free spins.

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Thunderkick

Best rated Thunderkick Games

Thunderkick

Based in Stockholm and Malta, Thunderkick is one of the smaller development companies for online casinos and licensed in the UK and, obviously, Malta. Their title 1429: Uncharted Seas is their highest RTP game, with a spectacular 98.6%, and many of their other titles surpass 97 percent. About half of their collection are high risk variance, while the remaining are medium. The maximum win is 11,000 times one’s bet over a maximum of 4,096 pay lines.

Jacob Clarke

Professional Gambler

Thunderkick is still growing as a company. Whether they will survive or not remains something to be seen. The games they have put out have been very good and I’d like to see more of them. But you need to keep growing if you are going to make it in the online casino world and I’m not sure they have it in them.

Carnival Queen

It's Mardi Gras time for this game, complete with partygoers in masks. There are 4,096 pay ways and a 1,000 credit jackpot in a game featuring six reels that have an avalanche system of clearing the board. Three mask scatters trigger 12 free spins. It has a 96.1% RTP.

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Dragon Horn

As you play you can get icons that push you down a path. Get further and further along and you'll end up winning big – including a jackpot of 2,430 credits. It is a high variance game – among the highest – with a 96.1% return to player average and a maximum of 8,282 times your bet.

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Riders of the Storm

Set on an old seafaring vessel this game is all about chasing the wild cards as well as the compass, which triggers one of three bonus games and up to 22 times your bet. Mystery wilds can make up to four reels completely wild. There are 243 win ways and the return to player average is ‎96.15%.

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Playson

Best rated Playson Games

Playson

Playson is an international company that is not as cutting edge as Yggdrasil but seem to have found their own market in the industry. Their current catalogue includes 86 games, which include two card games and two roulette titles. The average return to player percentage is 95.04%, and the maximum amount a player can win on any one spin is 15,000 credits on games with up to 100 bet ways. Tournaments are offered across all Playson games. Playson Limited holds license number 041337-R-321523-012 in the United Kingdom and certificate number RN/101/2018 in Malta.

Harry Brown

Math Analyst

I like Playson. They aren’t as in your face as some slot companies but then again why should they be? They churn out a very reliable produce that people can get excited about. Some of their ideas are very good. They have a solid reputation in the industry for a very good reason.

Chicago Gangsters

Get into old time Chicago with this interesting game, even though its RTP is a low 95.39%. It's played on a five by three grid and only has one bonus game which is triggered by six bonus symbols. A nice entry into the field, artistically speaking.

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Crystal Crush

This game is all about clusters. Set up in a hexagon, try to chase them and then collect cash. Modeled after Candy Crush, this game has a 95.64% return to player average. There is only one bonus game but it has six levels, triggered by three crushed crystals.

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Book of Gold: Classic

A classic Egyptian themed game with a huge 5,000 credit jackpot up for grabs. You can play with up to 50 free spins. There is only one bonus game in this five-reel game with 10 total pay lines. The queen is the highest paying symbol.

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Netent slot games

Best rated Netent Games

Netent slot games

Known mostly for their 16 live casino games, NetEnt also has a vast library of 300 online games as well that range from classic slots to card games. While we wouldn't call them cutting edge, they certainly do know how to make popular games that casinos want to offer – including 159 bonuses available. They are licensed in the UK as well as British Columbia, Malta, Gibraltar, Alderney, Belgium, Romania, Spain, and even in the USA, in the state of New Jersey. The average RTP for their games is approximately 96 percent.

Jacob Clarke

Professional Gambler

NetEnt is the gold standard when it comes to games you know are going to be popular. They are fair and easy to pick up. With just about any NetEnt title you know you are going to have a good time. They get top marks from me for playability.

Butterfly Staxx 2

This slot is one of the great low variance games, with a large maximum bet of 1,250 credits. Set in a five by four grid, your goal is to chase butterflies and collect cash thanks to three bonus features and stacked butterfly symbols, but a jackpot of only 50 credits.

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Conan

We all know the legend of Conan and that's what is on display in this challenging six-reel slot machine. The Tower Wilds, Mystery Symbols and Mystery Multiplier are fantastic features in this medium variance game with a 96.28% return to player average.

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Jumanji

With this slot the stars of this beloved 1995 movie are brought to life in a unique geometric reel design and four massive features as well as nine bonus games with cinematic flair. However, the jackpot is modest at only 140 credits.

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Red Tiger slot games

Best rated Red Tiger Games

Red Tiger slot games

Red Tiger is a classic style gaming company with licenses in Gibraltar, the UK, Malta and Alderney, and are based on the Idle of Man. They were founded in 2014 and acquired by NetEnt in 2019. Their selection of Asia themed games is excellent, and every game has its own little twists and turns. Of note are their daily drop jackpots, must-drop jackpots, and mega jackpots. The average return to player percentage of their more than 120 largely medium-variance games is an admirable 96.12%, with no more than 49 pay lines in each game and a maximum win of 2,500 times one’s bet.

Steven Jones

UK Casino Expert

Red Tiger at first glance seems like a retro provider. But when you dig deeper into their games you find interesting little elements. While they will never be about in-game mini-game bonuses, what they do provide is a ton of fun and a decent return to player average.

The Equalizer

This is a high variance game with an average 96.08% RTP. It has delightful 1980s style retro features in its design. Features include expanded wilds, stacked symbols and more. Win up to 150 times your bet with the highest payout symbol, and 10 free spins from the scatters.

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Mega Pyramid

Another high variance game, this time with an Egyptian theme. The expanding symbols go a long way toward big wins, as well as cloned symbols and re-triggers during the free spins round. There are five reels and 30 pay lines.

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Wild Cats Multiline

Set in the savannahs of Africa, this is a video slot with a 400-credit jackpot and three bonus games. With 49 pay lines across six reels, wild cats such as the lion will assist you during the free spins round, while the tiger can pay up to 20 times your bet.

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Push Gaming

Best rated Push Gaming Games

Push Gaming

Push Gaming is a London based provider of online slot machines to the UK, European and Asian markets. The licenses they hold include a UK Remote Gambling Software License and Malta Critical Gaming Sup-ply License and an Alderney Associate Supplier Certificate. They have created partnerships with Mi-crogaming and Playtech to help create the most dynamic online experiences. Currently they have released a total of 30 games with a fairly high volatility on their newer games (the older titles are quite low in their var-iance) and also a high return to player percentage, more than 96 percent. The most you can win is 20,000 times your bet over a maximum of 1,024 pay lines.

Steven Jones

UK Casino Expert

Push Gaming is interesting to me. Being a provider out of London, they have a different take on gaming than the European or Asian providers. And their innovating spirit is admirable. Even when a game doesn’t hit the mark it is still always going to be interesting to play.

Wild Swarm

Wild Swarm is set up in a five by four configuration. It has a high variance and a high RTP of 97.03%. Look out for the dollar symbol for the largest payouts on its 20 pay lines. Free spins include sticky wilds, there are three bonus rounds, and there is a jackpot of 600 credits.

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Turn It Up

Turn It Up is chock full of features. The soundtrack is great. There is a 10x multiplier opportunity and a 2500x maximum win as well as a jackpot of 250 credits. Look out for the enhancers, which can clone wilds, remove symbols, or trigger multipliers.

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Viking Clash

Viking Clash is another unique gaming experiment with a medium-high variance and a 96.6% return to player average. It features two different five by three grids as well as sticky wilds, multipliers, and a wild ship feature that can be triggered at any time.

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Betsoft

Best rated BetSoft Games

Betsoft

Betsoft is one of the largest and oldest gaming providers out there, founded in 1999. Their average return to the player is 95.27%, which is on the low side in the industry for their approximately 200 high risk variance games. Their licenses to operate are from Malta, Romania and Curacao. You can win slightly more than 4800 times your bet. Their collection includes seven different black variants among their 70+ games. Most of their games have three to four reels and as many as 10 pay lines.

Harry Brown

Math Analyst

Betsoft is one of the big boys. While in general I’m in favor of the smaller more innovative houses I can’t deny that Betsoft delivers the goods. They will sometimes be a couple months behind other providers but everything they release is excellent. I’m happy to wait to get exactly the game I’m expecting.

Slotfather

Machine guns, pasta and even a smoking cigar are all on the reels in this mafia themed game. You'll have the chance to win a maximum of 1,693,500 credits as well as the progressive jackpot. There are five mini-games, including one where a man named Sneaky gives you a briefcase full of cash.

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Treasure Room

Follow the map to the gold in this five by three slot machine. It's a bit old school and has a very low return to player average of 94% - but it is a progressive slot so the amount you can win only increases. It has a medium variance and a low betting range, from .02 to 1 credit.

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Weekend In Vegas

What happens in Vegas stays in Vegas! This game has five reels, three rows, and 243 pay ways. The one bonus round takes you to the Strip for lots of fun. Free spins are triggered by the police car scatter symbol. After a win, you have the chance to double your money.

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Yggdrasil Gaming

Best rated Yggdrasil Games

Yggdrasil Gaming

Yggdrasil is one of the most respected online game providers in the industry, winning Slot Provider of the Year in 2016. Founded in 2013, it quickly set a new standard for online casino slot machines. The sheer breadth of what they have to offer in their 70-plus games is staggering. The average return to player rate is 96.8%, and their games are designed to be of medium volatility. Maximum wins range from 10,000 to 50,000 credits. Yggdrasil Gaming Ltd is licensed in Gibraltar, Malta, the United Kingdom, and Romania.

Harry Brown

Math Analyst

I’m always looking forward to what Yggdrasil is going to come up with next. You just can’t predict them. They keep their eyes on the prize and seem almost psychic when it comes to figuring out what the market is looking for. They get a lot of respect from me.

Hanzos Dojo

One of the most innovative games ever produced, it has a base five by three grid plus an additional three by one grid, giving players two chances to win on every spin. There is a 200-credit jackpot and a 96.1% average return to the player.

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Wolf Hunters

Wolf Hunters is an exciting five-reel game with four bonus games and a 96.3% return to player average and a medium to high volatility. You can collect bonus symbols to enlarge your hunter. Along the way through the gothic estate you can chase free spins as well.

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Vikings Go To Hell

Vikings Go To Hell brings players into the depths of Norse mythos with a 500-credit jackpot, an astonishing 5 bonus games, and multipliers from one to three times. The fight feature will get your heart pumping. This is a highly volatile game with 25 pay lines.

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Play'N GO

Best rated Play’n GO Games

Play'N GO

Play N Go was launched in the 1990s. They were one of the first online casino providers to make their mostly highly volatile games mobile friendly, and their collection reflects this innovation. Today, all of their more than games play just as well on mobile devices as they do on desktops and laptops. Their list of games includes many titles that are wildly popular, and that people enjoy playing, given that the maximum wins are 5000 times one’s bet. The average return to player percentage is 96.21% across all of their games, from slots to video poker to scratch cards to card games.

Jacob Clarke

Professional Gambler

Play N Go certainly have the experience to build great games. They are one of the ones I look out for when I’m trying to find a new game to play. Their games are fair, and they clearly know exactly what they are doing. One of the best providers out there.

Street Magic

Street Magic invites you to claim eight to twenty free spins to make big wins, including up to 5,000 times your bet across 20 pay lines and a 500-credit jackpot. This game has a 96.48% return to player average. The central character is a street magician.

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Rainforest Magic

With Rain Forest Magic and its majestic animals, the goal of the game is to find mystery symbols and then use them to collect wins from 25 pay lines. There are three bonus games and a 1,000-credit jackpot. The return to player average is 96.53%.

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Raging Rex

Raging Rex is all about dinosaurs. In a six by four grid with a whopping 4,096 pay ways, players will be chasing after the mighty T-Rex, which is the wild. You can choose between Wild Hunt and Primal Rage bonus round features. It is a highly volatile game with a 96.34% return to player average.

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Reel Play slot games

Best rated Reel Play Games

Reel Play slot games

Based in Sydney, Australia, ReelPlay has recently rebranded themselves and only have just a few games to date. Their new launch as ReelPlay earlier this year has been watched by industry experts. While they clearly have not had much time to release many games they do show promise. We are a bit skeptical of a company not based in Europe or the UK but they seem to be handling themselves fairly well. Of course, just coming out of a rebranding we have no idea where they are going to go or how well they are going to do. That's why they get the industry attention. Not it's time for ReelPlay to earn it.

Steven Jones

UK Casino Expert

ReelPlay is essentially brand new to the industry. I know that they were trading under another name but essentially that company is gone and this new company is taking its place. They are on my watchlist because I want to see what they are able to accomplish. In the meantime I’m withholding judgment.

Hypernova Megaways

The first and only game released by ReelPlay so far is a fairly basic royal cards and gems slot with a whopping 117,649 ways to win, including a 2,000 credit platinum trophy jackpot. There are two bonus rounds, including the Supernova free spins that can trigger re-spins as well.

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