Newly updated for September 2018
We love slots - easy to get the hang of, super fun and with great opportunities to win big. Our team has researched the very latest and best online slot games out there, and where to play them. We've hand-picked the best, including some highly rated live casinos and hot new sites you might not have heard of. It goes without saying they're all trustworthy, UK regulated and delicious looking on all your mobile devices. These sites are packed full of the latest slots and offer amazing bonuses. All that's left for you to do is sign up and start playing. What are you waiting for?
Slots are the UK's favourite online casino game - so we've lined up the top slot sites and a selection of the best new games to try out.TopRatedCasinos Editor
Slots are the UK's favourite online casino game - so we've lined up the top slot sites and a selection of the best new games to try out.
Here is a comprehensive list of online casino sites with a large and varied selection of slot games:
The aim of the game is simple. Spin the reels and land matching symbols to win. With no skill or strategy required, online slots games are suitable for just about anyone to play, from casino novices to blackjack pros.
Plus, with several top online casinos in the UK offering a number of penny slot titles, the game is easily accessible regardless of your bankroll size.
The ‘return to player’ (RTP) figure of a slot game is arguably the most important factor to consider for players looking to profit from their spins. As you’ve probably already guessed, RTP is the amount that an online slot game is designed to pay out over an extended period of gameplay.
If a game has an RTP of 90%, for example, then players can theoretically expect to receive 90% of the money wagered back in winnings over an extended period of gameplay. Of course, the actual amount returned can vary hugely, especially during short gameplay sessions.
Under UK law, casinos regulated by the UK Gambling Commission are required to clearly display the RTP figure for all gaming machines, as a percentage. Slots enthusiasts will be glad to know that slot games rank among the highest paying games when it comes to player return, with most slots offering an RTP of 90% and above and many above 98% or even 99%.
Sure, classic table games like roulette and blackjack have their fair share of variations, including some thrilling live dealer tables. But when it comes to sheer volume, there’s no game that even comes close to rivalling slots. Slots are the backbone of any good casino brand, and the variety of amazing slot games available online means many sites can boast games collections featuring over 500 titles.
Variations include classic 3-reel slots, video slots, progressive jackpot games and a number of themed titles based on popular films and TV shows. Let’s take a closer look at how some of the changes featured in these variations can affect your gameplay.
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For every £1 you bet, Slots Magic will match it (up to £200). You'll also get 30 free spins on Jungle Spirit: Call of the Wild.
721 user ratings
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At TopRatedCasinos.co.uk we take a lot of pride in presenting our users with the best online casinos the UK has to offer. We're continually reviewing the market to bring you the lowdown on newly launched casinos, as well as updates on long standing brands. Our expert review team research every casino we present to you, making sure you're in-the- know and join a casino that meets all your needs. The key areas focused on by the TopRatedCasinos.co.uk review team are:
We assess the size, quality and wagering requirements of any welcome bonuses, free spins, offers and VIP programmes.
Game selection is very important – we look for table games, live gaming, and a range of slots from top software providers.
We think online casinos should have a distinct brand and design, with modern, easy to use interfaces and navigation.
We look for the highest quality betting experience across a range of mobiles and tablets, as well as desktop computers.
We review the available deposit and withdrawal methods, times, restrictions, currencies and more.
We study each bookie's popularity, trustworthiness and customer feedback to determine the strength of their reputation.
TopRatedCasinos.co.uk is an independently owned casino comparison site. In some cases we receive commission from casinos for introducing customers to them, in order to support the free comparison service we provide to UK gamers. While this may occasionally affect the position in which a casino appears, we guarantee it does not affect either the review or the ratings shown, which are produced by our unbiased casino experts.
ALL CASINOS ARE: UK LICENCED
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Experience the Jack and the Beanstalk story in a beautiful 3D video slot packed full of bonus features.
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Embrace classic slots with Twin Spin’s retro design, whilst enjoying the benefit of all its modern trimmings.
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Enjoy a history lesson with this fun-filled Roman themed slot that will get you in the mood for victory.
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Flowers will get you in the mood for summer with its wacky characters and impressive wilds.
Inspired by 90’s video games, Reel Rush provides plenty of candy symbols and wild infested multi-winning reels for you to enjoy.
Embrace Koi Princess’s rich Japanese culture and win big with its huge collection of fantastic features.
Starburst is an incredibly popular and visually beautiful slot, providing players with an arcade feel and an attractive jackpot of £50,000.
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The Jack Hammer slot embraces a classic comic book style and story, telling the tale of the detective as he battles Evil Dr. Wuten.
Fish for some free spins, wilds and even lobster with the enjoyable Lucky Angler slot game.
King of Slots is a big name to live up to, but the slot succeeds with its fantastic bonus features.
Online slots are a popular choice amongst both beginners and casino veterans alike. This is partly down to the bet size - many slot games allow a variable range of stakes. Small stake options are great for slots newbies to learn the ropes. Also, slot games always have the option to walk away at any point, unlike some table games.
What makes a good online slot?It's worth going for a simple game with a clear interface when first starting out. Also think about choosing a slot game that looks fun with cool visuals. Some slots can get a little complex in terms of bonuses and payouts, but fear not: most are simple and easy to enjoy, and we've picked the best for you here at TopRatedCasinos.
Sensible betting for beginnersBeginners should be sure to check how much will be wagered on each spin. When you first start out with online slots it could be a good idea to begin with the smallest stakes whilst you are learning the game. Many slots will offer the maximum win-lines for 0.01 coin, meaning all betting options can be played for a small stake.
Steps to get started with online slotsFirstly, choose yourself a good slot game. There are plenty to consider - we've picked out some of the best and which casino sites to play at further up this page. Take your time to browse through. Make yourself aware of bonuses on offer. Once you're signed up, select your slot game of choice, load the interface and take a moment to look around, find and set the stake amounts and pay-lines. Then bet away - you'll get the hang of it pretty quickly!
Most slots give you the chance to land a huge win using relatively small stakes. Progressive and fixed jackpot slots take it a step further, offering some of the most lucrative payouts of any online gambling game. On traditional, or ‘fixed jackpot’ slot machines, winners receive a predetermined fixed amount. Much like a lottery, progressive jackpots keep increasing until a player wins it, funded by small proportions of every bet made by players.
Of course, there are a few requirements to even have a chance at landing the jackpot prize. Some games require players to complete a bonus round, while many games need players to place the maximum bet to win the full jackpot. Progressive jackpots are usually high variance too, which simply means they don’t pay out often - so you could very well run through your bankroll before you get a shot at triggering the jackpot.
The latest video slots are eye-catching, to say the least, with software houses packing stunning 3D graphics, amazing animations and engaging themes all into some of the best new games. However, if you’d rather keep things simple with just one payline, you can play the classic slots that inspired many of the most popular titles today! These 3-reel games are a great place for beginners to start, and just about every software provider has a few in their locker. From NetEnt’s Mega Joker to NextGen’s Jackpot Jester 50,000, you’ll never be short of old-school options that take you back to the days of classic fruit machines in brick and mortar casinos.
Video slots make up the vast majority of slot machines found online. Symbols, exciting pop culture themes, animations and bonus rounds spice things up in this popular variation. Plus, unlike classic 3-reel games, they feature multiple paylines and multiple reels, opening up a huge range of betting opportunities and giving players the chance to win on more than one line from a single spin.
Much like live dealer casino offerings for your favourite table games, video slots are the closest thing you’ll get to the look and feel of a traditional land-based slot machine. Without being restricted to the confines of a physical slot machine, software developers have plenty of freedom to use cutting edge 3D graphics and incorporate rewarding bonus rounds, so that lucky players can take their slots gameplay to the next level.
Each online casino game is brought to you by software developers that are, in most cases, completely independent of online casino operators. While some casinos are powered by an exclusive provider, there are others that feature the creations of multiple software providers. In fact, the variation on offer and sheer number of slots available online is partly due to the long list of software providers in the industry. Microgaming, Playtech and NetEnt are among the leading software houses in the field. If you’ve played an online casino game before, chances are you’ve played a title from one of these providers.
However, there are a number of newer companies that have been responsible for some of the most cutting edge and popular slots games made in recent times. Here’s an introduction to a few of our personal favourites:
With a huge inventory of stunning 3D games, Betsoft have well and truly earned their reputation as one of the world’s premier producers of online casino software. These state of the art games feature engaging soundtracks and a unique animation style that sets them apart from the rest of the pack. Plus, by focusing on the cinematic potential of online slots and the characters these games feature, Betsoft has become the ideal destination for the casual casino player.
Play’n Go is best known for being among the first to develop casino software that caters to mobile players, creating a seamless transition from desktop to the smaller screen for those making the leap to gaming on the go. The company produces high-quality, high-definition Flash and HTML5 games that are compatible with just about any web-enabled device.
Yggdrasil is known for creating some of the most visually impressive slots titles on the market, using HTML5 code to support its innovative iSense technology. This combination delivers silky-smooth animations for top-notch user experience, whether you’re playing slots on your desktop or mobile device. The software house might be fairly new to the game, but its efforts haven’t gone unnoticed, having been awarded ‘Rising Star’ title at the 2015 EGR B2B Awards and landing wins in the Slots Provider category at the 2017 event.
Novomatic is responsible for creating some of the best-known slots titles on the market, having developed games such as Book of Ra and Lucky Lady’s Charm. Novomatic slots are known for their high variance with plenty of wilds and bonus RNG symbols, giving players plenty of opportunities to win big. Having started developing land-based casino games in 1980, Novomatic understands what makes casino players tick and now caters to online players on mobile and desktop enabled slots.
With so many players turning to their mobiles to play online slots games, software providers and online casinos are doing all they can to cater to the needs of gamblers who want to play on the go. In fact, slots software houses like Play’n Go specialise in tackling the mobile slots market. Much like any other mobile casino games, there are a few factors to bear in mind before pick out a favourite. So what should you consider?
Many software houses have optimised older slots, adapting graphics and buttons for easier use on smaller touch screens. However, these developers are also creating newer slots specifically designed for use on mobile phones and tablets, to make for the ultimate mobile slots experience. In these cases, the slots are developed with mobile software in mind, resulting in higher quality graphics and smoother functions, meaning mobile slots players can enjoy seamless gameplay wherever they are.
Virtually all online casinos have mobile web apps, but the very best casinos also offer native mobile apps. Of course, you can play slots on both platforms, but the quality of gameplay can differ between the two. The most notable difference is loading time; native apps tend to store data on the device itself, whereas web apps store data on a server, which takes slightly longer to load. Mobile web apps also have the added bonus of push notifications so you can receive alerts on the latest slots bonuses and newest slots titles as soon as they become available.
Fancy the chance of landing a real money win without putting your own money on the line? No deposit bonuses are usually reserved for new players and can come in the form of free spins on certain slots games, or bonus funds. Both options are great ways to win without risking your bankroll and represent a win-win situation for both casino and player; the player receives what is essentially free money, while casinos get a low-risk shot at attracting new customers.
As the name suggests, claiming your no deposit bonus doesn’t require you to put any money on the line. In most cases, all you need to do is register an account! Not bad for a free shot at some real money earnings, right?
There are often wagering requirements, time constraints and caps placed on winnings to limit a players ability to walk away with their winnings. However, at the very least, the no deposit bonus remains a great way to get familiar with the games and get a feel for your chosen casino; you essentially get to ‘try before you buy’.
What are the biggest online slots jackpots ever won?
Ah, you want to hear some winners stories - we don't blame you, they're pretty exciting! On 6th October 2015, Jon Heywood of the UK decided to put £30 in his account and play Mega Moolah. Within 7 minutes of playing 25p spins he had hit the jackpot and won £13,209,300, the largest jackpot payout in history. In 2013, one player on Scandinavian casino site ‘PAF’ won €17,861,800 from a 25 cent spin on NetEnt’s Mega Fortune. In 2011, a man from Norway couldn’t sleep so he decided to play a few games of Mega Fortune. He ended up 11.7 million Euros richer because of it.
Which developer makes the best slot games?
We find that different developers excel at creating different slot game types. Below are some of the most notable ones:
Which slot features should I be looking out for?
Slot features are often what distinguish a great slot from a good one.
Free Spins are a common feature of online slots,.Free spins give the opportunity of bagging more wins without any cost. Many slots even offer multipliers during these spins to further boost your winnings.
Bonus rounds give an opportunity to play a fun and potentially lucrative mini-game when you align the right symbols during a spin. Hitting these rounds is often the main goal of online slot players.
Ways to win – traditional slots offer as few as 9 potential winning lines, but choosing a slot with 243 or more paylines is a great way to ensure you’re getting more wins per spin.
Tumbling Reels are great if you're tired of spinning reel slots! When you hit a winning payline, those symbols are then replaced by new ones to continue your streak.
Can I play for free?
Yes you can - most slot sites have a 'free play', 'demo' or 'play for fun' option designed to let you sample the game before making a deposit. One exception is progressive jackpots, like Mega Moolah, which is only available as a full real money game.