Quick Casino Reviews
Spin and Win Casino
This online casino has plenty of slots for you to play. The slots come in all sorts of themes, from pirates and treasure to animals and myths, and there are some high-paying progressives to be found as well.
New players at Spin and Win Casino can grab a generous 100% matched deposit and free spins welcome package; plus, you can claim unlimited free spins through Spin and Win’s daily rewards promotions.
Visit Aspers Casino and you’ll have a selection of more than 400 slots to choose from. Check out new additions such as Hyper Strike and Monopoly Electric Wins, or have a spin on popular releases including Beat the Bobbies and Fortunium.
If you’re new to the casino, there’s a matched deposit bonus and 100 free spins welcome offer available with your first deposit — and what’s more the free spins have no wagering requirements.
You’ll find loads of slots at Dunder Casino and the slot categories make these easy to browse. Search by theme, feature or provider and you’re sure to find plenty of slots to suit your tastes.
Watch out though, not all slots will contribute to you completing the bonus wagering requirements at Dunder.
With over 1,500 slots to choose from, provided by some of the best software houses in the industry, Casumo has something for everyone!
Sign up today and claim 100% up to £25 in bonus money, plus 20 free spins to use on Play’n Go’s thrilling Book of Dead — which is one of the most played online slots ever.
Mansion Casino throws open its doors and invites you to check out its slots collection. Here there are more than 200 slots to try out, including an impressive line-up of over 70 progressive jackpots.
Have a spin on one of the DC Comics or Age of the Gods progressives, or stick to the regular video slots and try out Call of the Valkyries, Pumpkin Bonanza or Buffalo Blitz. There are plenty of free spins bonuses at Mansion Casino, but keep an eye out for the maximum spin value- some are as little as 20p.
Casimba has lots to offer fans of slots, with games by just about every big provider available. Have a spin at NetEnt’s colourful Starburst, Big Time Gaming’s delicious Donuts or Thunderkick’s quirky Pink Elephants — or have Casimba choose a random game for you.
Claim 20 no deposit free spins upon registration to check out Casimba’s great collection on the house.
At PlayOJO Casino, you’re invited to have a fun and enjoyable gambling experience like no other. The casino caters well for slots fans, with hundreds of top-quality games by big-name providers.
Have a go at some of OJO’s picks, including Starmania, Reactoonz and the progressive jackpot Mega Moolah. Wager free bonuses are definitely a selling point, but beware that some free spins are valued at just 10p each.
Here it’s nothing but slots, slots and more slots! With more than 2,000 slots by over 60 providers, you’re sure to find plenty of games to keep you entertained for hours — including VR casino games.
With weekly matched deposit bonuses and free spins promotions, there’s always something on the menu at SlotsMillion.
The name says it all — Videoslots is the home to some amazing titles, hosting one of the biggest collection of slots around
This casino’s unmatched line-up of slots includes well over 2,000 titles from over 90 providers, and it’s very easy to filter down the selection, however, you can’t use PayPal to make deposits at this site.
Slots are always great fun to play and that’s why Fun Casino has over 300 to play, including Rainbrew, Berryburst and Yeti: Battle of Greenhat Peak at Fun Casino.
With games from leading providers, like NetEnt, Play’n GO, Amatic Industries and Microgaming, you’re assured of a premium-quality experience.
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Compare slot sites
Our expert team has handpicked the UK’s best and highest paying online slot sites, making it quick and easy for you to compare bonuses, games and other features to find your favourite casino.
Found one that tickles your fancy? Use our link to sign up. Creating an account only takes a minute or two. If you bagged a no deposit bonus, then you can jump straight in and start playing real money online slots on the house.
For casinos without a no deposit online slots bonus, you’ll need to make a deposit to claim the welcome offer and play for real money. Go to the cashier section and choose your preferred payment method; then, follow the on-screen instructions. Be aware that some payment types may not be eligible for the welcome bonus, so check out the terms and conditions before you proceed with an offer.
Most deposit methods are instant; therefore, you can play right away. Go to the lobby, browse the library of slot games and pick one you like to start spinning the reels.
Why Play Online Slots?
Wondering what’s so special about slots? Here’s what you can expect from this popular casino game.
The best online casinos have hundreds of different slots titles in their libraries, with some boasting over 500 different games. From classic 3-reel fruit machines to picture-perfect video slots, you’re spoilt for choice. Mix pop-culture with your online slots gameplay thanks to TV, film and music branded slots like NetEnt’s Jimi Hendrix reels, Playtech’s Rocky slots and CSI slots from IGT. Obviously, this vast selection doesn’t mean that every game is right for you- even if its reels are themed around your favourite blockbuster. Other factors, like minimum bets, paylines and mobile compatibility are important, too! We’d recommend using free demo slot games to give titles a try before you put real money on the line.
The essence of slots is simple: spin the wheels and score matching symbols to land a win. There’s no secret strategy or skill to perfect; everything comes down to chance. This puts everyone in the same boat, whether you’ve been playing slots for years or are spinning the reels for the first time. Of course, this can be a little frustrating when there’s real money on the line, but that’s just part and parcel of this casino game.
The return to player (RTP) percentage of slots tends to be pretty high- most are in excess of 90%, but we’d say the best slots to play have an RTP of over 96%. This means that, in theory, you stand to win back 96% of your total spend. It goes without saying that, given that RTP based on an infinite number of spins, you could win more or less than this at any given time.
Online Slot Variations
Picking slots isn’t as simple as choosing a title or theme that appeals to you. There’s a number of different variations to consider when finding the slot game for you, as each variation can have an impact on gameplay and potential payouts . Here’s the key criteria when it comes to differentiating online slots.
Classic Slots – These are most similar to traditional fruit machines. Classic slots tend to have three reels across which you must match symbols in a straight line. The simplicity of these slots makes them ideal for beginners, but the limited paylines gives you less opportunity to score a win on a single spin.
Video Slots- Video slots make up the majority of slots you’ll find online. This is where you’ll find cutting edge 3D graphics, moving wild symbols and wacky themes, as well as multi-directional paylines that give you even more chances to win on the reels. Of course, slots is a game of chance, so while betting on more paylines gives you more opportunities to land a winning combination, you aren’t guaranteed the jackpot.
Progressive Slots- Slots don’t usually offer the chance to win big, unless you’re playing slots with pooled progressive jackpots. These prize pots grow bigger each time a player spins the reels, and can reach some pretty dizzying heights before they burst. In fact, Microgaming’s Mega Moolah slot paid out a massive £13,209,300 in 2015, earning a world record title. You’ll often need to fulfil certain criteria before you can win the jackpot, such as completing a bonus round or wagering a specific number of coins, so it’s not as easy to win big as you might first expect.
Megaways Slots – Developed by Big Time Gaming (BTG), Megaways online slot games use a reel-modifier mechanic, which randomly changes how many symbols appear on the reels with each spin. This revolutionary innovation increases the number of ways to win, with most Megaways slots delivering an eye-popping 117,649 winning ways on a single spin. BTG allows other software providers to license its Megaways mechanic, so there are now dozens of titles to play at our best online slots sites.
How to Play Slots
Whether you’re looking to play free or real money online slots, it’s pretty easy getting to grips with these games, even if you’ve never played before. To make sure you’re on the right track, let’s run through the basics.
- Set your budgetWhen you play online slots games, the money you use comes directly from your casino balance; therefore, it’s wise to set a win/loss budget before you start. You’ll need to keep an eye on this unless you use the autoplay feature on the slot.
- Choose a game to playWith so much choice, it’s not easy choosing which online slots to enjoy first. Our genius tip is to consider your bankroll; if you only want to play with pennies, slots with non-fixed paylines will be your best bet. Of course, players wanting the chance of hitting a larger jackpot need to head to the progressives. Once you’ve decided on a slot, take a couple of minutes to familiarise yourself with the paytable and learn what triggers the in-game features.
- Paylines and stakeSome slots have non-fixed paylines, which allow you to choose how many paylines you want active. Other games are fixed, so you pay the full amount on each spin. Now we get to the stake — how much do you want to spend on each spin? Most slots use a ‘coin value’ system, although NetEnt games also have a ‘bet level’ selector. There are plus and minus arrows available that allow you to adjust these values to the total stake you’re happy with.
- Spin the reelsHit the spin button or circular arrow to set the reels in motion. There’s no real strategy involved when playing online slots, so you can relax and enjoy the game. When you land a win, the slot will pause while highlighting the winning combination, telling you how much you’ve won.
Slots Software Developers
Pretty much every casino software provider has dipped its toes in the realm of slots, but that’s not to say they’ve all focused on the same features. Want to find out which software house makes the best slot games for you? The Casino Genius team has picked out the top slots software developers, highlighting the strong points of each.
As one of the first developers to create slots for mobile, Play’n Go makes it possible to enjoy top-notch slots wherever you are. Its use of Flash and HTML5 in production means games are of the same high-quality no matter which device you play on. Titles like Sizzling Spins, Ring the Bells and Pearls of India are just a taste of what you can expect from this software giant.
Yggdrasil has created some of the most visually-appealing slots titles out there- with Vikings Go To Hell and Incinerator some of the games in its catalogue. Yggdrasil’s iSense technology, its HTML framework, to make for seamless slots gameplay. As a relatively new slots software provider, Yggdrasil doesn’t yet have the biggest portfolio, but its efforts so far have certainly been appreciated. This software house has already won a handful of prizes at the EGR B2B Awards in recent years.
This casino software giant has developed some of the most popular slots on the market. Having signed exclusive deals with big names like Sony Pictures and Universal, NetEnt have created some of the biggest branded online slots, from Jumanji slots to Guns ‘N Roses and Vikings themed reels, the choice is pretty impressive.
For more than 25 years, Microgaming has been at the forefront of the online casino gaming industry. Its portfolio boasts more than 500 slots ranging from retro reels and licensed games through to the largest progressive jackpots in the business. Whether you choose a classic like Immortal Romance or one of its new online slots, you’re always guaranteed a thrilling experience with Microgaming.
The good news is that the UK’s best slots site feature a range of games from different software houses, so you can pick and choose your favourite titles.
Bonuses for Slots
Bonuses are one of the main drivers for many players when choosing the UK’s best online slots casino. These come in several shapes and sizes, such as welcome offers for new players to regular promotions that keep existing customers coming back for more. Let’s take a look at the most popular online slots bonus types and shed some light on the terms and conditions that you need to look out for.
If you’re looking to boost your bankroll, the matched deposit bonus ticks all the right boxes. As the name suggests, the casino matches your deposit by a certain percentage up to a specific value; for example, 100% up to £100. That means if you deposit £100, the casino gives you another £100 in bonus funds, so you have £200 to play online slots with. Of course, there will be terms and conditions, which include wagering requirements and time constraints. These vary from site to site, so you need to read the small print to find the true value of each bonus.
Free spins are a favourite for every slot player. Some casinos will offer them as a standalone welcome offer or combine them together with a matched deposit bonus. You’ll also find a plethora of regular free spins deals at most of our handpicked UK slots casinos. Once again, to assess the true value, you need to cast an eye over the terms and conditions.
No Deposit Slots
No deposit bonuses may sound too good to be true, but they’re not. The casino will give players 10 or 20 real money free spins simply for registering an account. Most likely, there will be a few strings attached, including a maximum win cap and wagering requirements, while the value of the free spins may only be 10p or 20p. However, they are a great way to dip your toes in the water without getting your wallet out.
No Wagering Slots
A standard free spins slot bonus may come with a 40x wagering requirement on your winnings. You play the bonus spins and win a total of £20. However, before you can withdraw your winnings, you must wager £20 x 40 = £800. Let’s be frank; you need a big slice of luck to turnover that £20 to surpass the £800 wagering requirement. This is why no wagering slot bonuses are so popular. You get to keep what you win, and the cash is available for instant withdrawal. What you may encounter are maximum win limits, which prevent you from winning too much.
Terms and Conditions
The value of an online slot bonus is not judged by the size of the matched deposit or the number of free spins. It’s what terms and conditions come along with the offer. These will determine the likelihood of you making a profit from the bonus. Knowing what to look for within the terms and conditions will help you compare bonuses across different casinos to find the best slot offers. Here are some of the key terms to keep an eye out for.
The majority of casino slot bonuses are connected to making a deposit. However, there will normally be a minimum amount required to activate the bonus. It will only be £10 or £20, in most instances, but it’s still something that you should take note of.
Nothing lasts forever, and that applies to online slots bonuses. There are two time constraints to be aware of. The first is how long the free spins are valid for. Some sites only give you 24 hours to use the spins before they expire; other casinos may award you 7 days. Secondly, there will be a time limit on clearing the wagering requirement. This can range from between 7 and 30 days.
Maximum Win Cap
Several types of free spins bonuses, such as no deposit online slot offers, tend to have a maximum win cap. The size of the limit will depend on the actual bonus and the casino. Some offers come with a cap as low as £10, but £50 or £100 win caps are more common. There are exceptions, however, such as Playojo, which offers no wagering free spins with no maximum win cap.
The wagering requirement is the first thing experienced players look at when hunting for a slots bonus. Wagering requirements are simply how much you need to spend in order to withdraw your winnings. As an example, you may see 100% up to £50 with a 30x wagering requirement. This means, if you claim the full £50 bonus, you will need to wager £1500 (£50×30) in order to unlock any winnings. As a guide, the industry average is around 35x. Bonuses with 50-60x wagering are known as high wagering, whereas offers that are 15-20x are low wagering casino bonuses.
Free Online Slots
No deposit bonuses are one of the best way to play free online slots. However, another option is to take advantage of the demo mode and simply play for fun. Most of the UK’s best slot sites allow players to try out free online slots, but you may need to register an account first.
Of course, you won’t win real money playing free slots, and you might not have access to all bonus features. But they’re still a pretty good way to get a feel for the game without putting your own money on the line.
Fast Payout Slots
We all want our winnings as quickly as possible, which is why fast payout slots sites are in high demand. When choosing where to play and which payment method to use, here are some key considerations. Firstly, you want to check how long the slot site takes to process player withdrawals. Fast payout casinos will have your withdrawal processed within 24 hours. Another factor to consider for fast payouts is the payment option. E-wallets, such as Neteller, Skrill and PayPal, will clear your funds in a matter of hours, but regular debit cards can take longer — up to 5 business days, in some cases.
Gone are the days of under-optimised mobile slot games, software houses are now creating slots with mobile users in mind. Whether you want to download a mobile app or play slots in the mobile web browser, you can spin the reels in just a couple of clicks. You don’t have to compromise on the quality or graphics, or the range of games, as most slots sites offer the same games across both mobile and desktop platforms.
All of our approved slots casinos provide a web-based mobile platform, which is suitable for both phones and tablets. However, to get the ultimate online slots experience, we’d recommend using a native app. Aside from being specifically designed for certain devices, apps come with several benefits, such as push notifications for up-to-the-minute bonus offers.
New Slots Sites
The UK is home to many established top-quality online casinos. But there’s also a steady wave of new sites arriving year on year. As a fresh face on the scene, brand new casinos often have more eye-catching bonuses, such as low or no wagering free spins. Furthermore, the collection of slots can feature some of the latest releases. All the new slots casinos we work with are UKGC licensed and regulated, so despite being less well known than others, we know they are legitimate and play by the rules.
New Slot Games
Online slots have evolved hugely over the past 20 years. Software providers are constantly pushing the boundaries to develop exciting new slots that stand out from the pack. Big Time Gaming managed this feat when it introduced its ground-breaking ‘Megaways’ reel-modifier mechanic which changes the number of symbols on a row with each spin, thus creating an astonishing number of pays to win.
Another top developer, Yggdrasil, has adapted this concept with its ‘Splitz’ game mechanic. In these games, mystery symbols drop down onto the reels which then split an existing symbol into two, leading to over 200,000 ways to win.
Best Payout Slot Games
The RTP of an online slot reveals how much the game will payout. RTP stands for ‘Return To Player’ and it is expressed as a percentage. For example, if the RTP is 95%, then the slot will payout an average of £95 for every £100 that is bet. Of course, this payout is based on an infinite number of spins, which means sometimes you will win more than the RTP and on other occasions, you will not. Most modern video slots offer an RTP between 93% and 96%; however, some have gone that bit higher. Here are the top 5 highest RTP online slots that you can play today.
NetEnt’s Mega Joker has an RTP payout of up to 99%, which is one of the highest available to punters. Unfortunately, there is a catch. This super-high RTP is only up for grabs when you play in the Supermeter mode, where you have to bet 10 coins a spin. The basic game mode has a lower RTP of only 85%, so if you’re willing to spend a bit more per spin, it’s worth engaging the Supermeter.
This is another NetEnt classic, and it’s very similar to Mega Joker. The RTP is an eye-catching 98.8%, but once again, this is only available for spinners in the Supermeter mode, where you must bet the maximum of 10 coins.
1429 Uncharted Seas
With an RTP of 98.60%, this pirate-themed slot from Thunderkick is a real fan favourite. In addition to its stunning visuals, it has several great features, including full-reel wilds and a generous free spins bonus round.
NetEnt strikes again! Blood Suckers has an impressive RTP of 98.0%, but unlike Mega Joker and Jackpot 6000, there is no requirement to play in a special mode with a maximum coin level. This is one of the reasons why Blood Suckers is one of the most popular slots around.
Developed by NextGen, the Starmania slot provides players with plenty of value with an RTP of 97.87%. With wild stacks, free spins rounds and 10 paylines which pay both ways, many players love this classic slot.
What is Variance in Online Slot Machines?
As you learn about online slots, you’ll come across terms such as high variance, highly volatile, low variance, and so on. Firstly, in the context of slots, variance and volatility are the same things. An online slot will either be low variance, medium variance, or high variance.
Low variance games tend to pay out small wins regularly. This makes them popular with players looking to clear wagering requirements from a casino bonus, for example. High variance slots are known to be more explosive. You may go several spins without a sniff of a win, and then land a payout. Of course, medium variance slots are somewhere in the middle of these two. Variance has nothing to do with RTP, and it’s a personal choice as to which type will bring you more excitement when you play.
Slots Site Checklist
We’ve picked out the top UK slot sites on the market, but there are always a few things to keep in mind before you sign up to play. Use the casino genius checklist to ensure you’re only playing at the best.
The first thing you should check is that the slots site is licensed. Casino Genius has a no-nonsense approach to licensing, and you should too. At the very least, playing at licensed sites guarantees you a selection of safe and fair slots. It’s easy to spot a UK licensed casino, as it’ll feature the UK Gambling Commission (UKGC) logo, as well as its licence number, on the site.
You’ll need to deposit some funds into your online casino account to play slots for real money, but what payment options do you have? Debit card and Neteller casino deposits are pretty standard across online casinos and PayPal is a common e-wallet option at the better-known slot sites, but you might need to look a little further for casinos that accept Bitcoin deposits.
The UK’s best slots sites provide a wide selection of quick and easy payment methods; these include:
PayPal needs no introduction as it has been the world’s leading e-wallet for more than 20 years. Many online slot players use PayPal because it offers outstanding security features, 24-hour support and it’s free to deposit. Furthermore, there’s the added perk that you don’t need to share any bank details with the slot site. Unfortunately, PayPal isn’t accepted by some online casino plus you may be excluded from some bonuses.
Skrill is another popular e-wallet used by UK casino players. It offers top-notch security, which gives peace of mind knowing that your financial data is safe. However, its greatest strength is fast withdrawals. Once the casino has released your winnings, it only takes an hour or so for the cash to be in your Skrill wallet. Sadly, many casinos exclude Skrill deposits from claiming their welcome offers. This is something to consider before opting for this method.
Both Neteller and Skrill are powered by Paysafe, which mean they share many similarities. Users get all the perks of excellent security features and fast withdrawals, but there can be eligibility limitations when it comes to bonus offers.
Since the UK Gambling Commission banned credit cards, the debit card stands alone as the most widely accepted payment method at UK slots casinos. With no fees, instant deposits and high-grade security, debit cards remain a popular choice. Unlike e-wallets, there are no restrictions on bonuses. The main drawback of debit cards, however, is that withdrawals can take up to 5 days to hit your account. A genius tip is to look for casinos offering the Visa Fast Funds service, which is a real-time payment solution that gives you your winnings within as little as four hours of your processed withdrawal.
Don’t want to use a bank account? No problem. Paysafecard is a prepaid voucher that you can buy from thousands of outlets across the UK or online. The voucher has a unique 16-digit PIN that you enter on the payment screen to confirm your deposit. While easy to use, the maximum deposit limit is less than one hundred pounds per card, and it’s not possible to make withdrawals using a Paysafecard.
Pay by Phone Bill
The pay by phone payment option was hugely popular with mobile slot players, as it simply tags your casino bill onto your monthly phone bill. Casinos, however, are phasing out this payment method now. This is because this banking method is seen by some as a form of gambling on credit.
Friendly Withdrawal Terms
Why play real money slots if you can’t get hold of your winnings? It’s a good idea to check the terms and conditions for withdrawal requirements before you sign up, keeping an eye out for processing times and minimum withdrawal amounts. While the £10 minimum withdrawal at most sites won’t be a problem for high-rollers, it might be a meaner feat if you’re playing low-stakes slot games.
While you might not need to contact customer support, it’s always best to have options. When can you contact the staff, and how can you contact them? The best online slots casinos offer 24 hour customer support, which you can access via UK telephone numbers, email and live chat.
Good to Go?
Now that we’ve shared our expert slots knowledge, you’re probably ready to start spinning the reels for yourself. Our genius team has picked out the UK’s best slot sites to get you started. Take a look at our reviews to find out which site is best for
Frequently Asked Questions
Still got a question? Someone might have asked it before!
What are the odds of winning on slots?
This varies, depending on the slot you’re playing on, as each will have a different number of paylines and winning symbol combinations. Let’s take a look at a classic 3-reel slot machine as an example. If each reel has 20 unique symbols, you stand a 1 in 8000 chance of getting a winning combination (1/20×1/20×1/20). The most simple slot machines have the best odds, but that doesn’t mean you’re guaranteed a win.
Can I still claim a bonus when playing on mobile?
Definitely. In fact, some online casinos have bonuses that are exclusive to mobile players. Just like any regular bonus, you’ll rarely find a mobile casino bonus without wagering requirements. Be sure to check the terms and conditions before you claim yours to avoid any nasty surprises later on.
What does RTP mean?
RTP stands for return to player and indicates what percentage of your wager you could expect to win back on a game. This calculation is theoretical, based on an infinite number of spins, which means players could have won more or less than this at any given time. So, while in theory you could earn back £98 for every £100 wagered on a 98% RTP slot game, this isn’t representative of every player’s experience. Not only are licensed UK casinos are required to display the RTP clearly on every slot game, they must also monitor the RTP to ensure it’s accurate.
What happens if I lose internet connection when playing online slots?
In most cases, the reels will continue to spin and you’ll simply see the results when you resume connection. If you got lucky, your winnings will be credited to your online casino account wallet to use for future spins.
How can I guarantee a win on slot games?
You can’t. Slots is a game of chance, so there’s no strategy to help you win. Licensed casinos use random number generators (RNG) to determine the symbols that appear on the slot machine, and these outcomes are out of your control. Betting on more paylines gives you more opportunities to land winning combinations, but you should never bet more than you can afford to lose.