Online slots are the most popular online casino games among casino punters around the world. Every UK online casino offers a large inventory of slots; often a selection that goes into the thousands. There are many different kinds of online slots, each available from a huge list of reputable software vendors, notably from Netent, Microgaming, Red Tiger Playtech and Play N Go (but there are over 100 different suppliers).
Keeping up with the latest slots can be hard because there are many released in the UK every week. We enjoy playing online slots and we add new slot reviews to our slots library regularly for you to use as an informational resource, to help you get a better understand of a specific game. Our slot reviews aim to highlight the theme of the game, but we go into much further detail than that, including often overlooked parts like the mechanics of a slot – RTP % Volatility and Max Wins.
Latest Online Slots
It’s easy to get carried away when choosing new slots; we’ve all been there: we select a new game based on its name, appearance and theme, only to discover it’s not a well-suited slot for your playing style. Perhaps it’s a high variance slot that will eat up your bankroll too soon? Or perhaps there aren’t enough features to keep you entertained? These oversights are the sort of things our slot reviews aim to diminish so that you don’t end up wasting time playing naff slots. On this page, we’ve left no stone unturned as we explain everything you need to know about UK online slots!

What Are Online Slots?
Slots are games where you spin the reels to form a winning line. A winning line is called a payline; you’ll need to land matching symbols on that line to get a prize. Online slots are an adaptation of the physical land-based casino slot machine or pub slot machines (sometimes called Fruit Machines or Fruities). Online slots can be enjoyed on a desktop device or your mobile or tablet.
As you can see, it’s a very simple idea, but the twist is that there are many different adaptions of that rule, especially with newer slots. There are countless different slot themes and many different gameplay features that add a contemporary twist playing online slots as opposed to playing land-based slot machines which are becoming a thing of the past.
How Do Online Slots Work?
To win at slots, the concept is the same as the slot machines you’ll find in land-based casino venues. You spin the reels to match the symbols on a winning payline. The fundamental difference between playing slots online is that the variation of games is far wider and are designed with many more attractive and exciting features.
Features include more paylines, more reels, free spins features, avalanche reels (reels which fall and new ones appear in their place), gamble features and Max bet features. All fo these modern features have one main purpose, and that is to increase your chances to land a winning combination!
What Makes Online Slots Good?
Below, we’ve added some helpful tips so that you end up picking the right slot. In a nutshell, here’s what we think establishes a good slot from a mediocre one, and this is also what we recommend looking for when choosing one:
- RTP & Volatility: Excellent slot games usually have medium to high RTP% (see below). The higher the RTP%, the better the payouts will be. On average, a good RTP % is around 96% and above. However, don’t dismiss slots with a lower one; perhaps there’s a reason! For example, the slot may offer a huge progressive jackpot which might make playing it worth it after all. What’s more, some slots do not have a fixed RTP % which means a slot’s RTP will increase the more you play.
- In-Game Bonus Features: A decent online slot will have a good number of built-in bonus features to help you form a winning payline, as well as being entertaining to play. Popular UK slots offer exhilarating bonus features such as free spins, re-spins, multipliers, wilds, scatters, avalanche reels, expanding reels, colossal symbols, win both ways paylines, multiplier, slot machine feature, cascade reels, pick and click features, gamble features or 243+ ways to win (and so many more!) These make for exciting gameplay.
- Exciting Theme: An interesting theme makes an exciting slot too. Popular themes include fun and cute cartoons like characters, Viking/ Norse themed, Magic and Mystical Themed, Space and Sci-Fi themed, Christmas, Halloween and Easter-themed. You name it, there’s often a themed slot for it. Take the legendary Book of Dead slot or other ancient Egypt themed slots like the Book of Ra. These are very popular in the UK. There’s also plenty of branded slots too, often based on a popular TV show, like Vikings Slot, Game of Thrones Slot, Baywatch slot – there’s so many different and it’s really fun to see your favourite TV character immortalised in an online slot machine!
- Jackpots: For all of us, the aim of playing online slots is to gamble and win some money. This why checking a game out for its win potential will put you into the driving seat of a better payout. Who doesn’t love online slot games where you can hit a multi-million jackpot while having fun? Some jackpots, such as Divine Fortune, Mega Fortune and Mega Moolah are simply life-changing. We know that smaller jackpots might not appear as attractive, but remember that big jackpots don’t get snagged too often. So, make sure you mix it up and play a variety of jackpot slots.
- Maximum & Minimum Bet Function: ‘Min and max’ bets are important to research. Slots which offer a max bet are the ones you want to look out for because many of the online jackpots can only be won with the max bet. What’s more, you usually get a higher payout percentage when betting max. (Though always check this in a game’s rules as it differs from game to game).
- Mobile Slots: All slot vendors develop their games in HTML5 technology which means that a slot will be perfect in mobile format. Though, it’s always best to check (especially slightly older slots) that it’s available as a mobile slot.
Understanding What RTP % Means
The return to Player % is mentioned a few times in this article and throughout this website and is a pretty important detail to grasp. Return to Player (RTP) is a helpful percentage which shows the average amount won back from the slot by players. The higher the % is, the greater the chance of winning some funds back will be. Most slots have a fixed RTP that doesn’t change no matter how much you wager, but slots RTP can increase the more you play.
If you’re playing a slot that has a theoretical RTP of 96% and you play 100 spins at £1 per bet, then you can expect to win back £96 (on average). The remaining £4 is called the house edge, which is the money the casino makes. What’s important to understand about a slots RTP is that it represents the percentage of bets that a player can expect to win back over their entire time playing that game. It doesn’t mean that you are guaranteed to win that money back when you play your session of spins.
What’s more, each spin is calculated using very complicated Random Number Generators (RNGs) to ensure that all players get a fair chance of a win or loss. This is what puts the fun into playing online slot machines – why you can play the same slot and hit a big win one day and then win nothing the next – it’s just pure luck based on random outcomes.
Understanding a Slots Volatility
This is another key factor to consider when playing slots online is the volatility of the game. When talking about the volatility or variance of a slot, it refers to the amount of risk associated with a specific game. Volatility and variance are used to describe how often and how much you can expect to win during your play sessions. Some games can present long dry spells with occasional big wins. These are known as high variance/volatility slots, whereas low volatility slots you would see much more frequent yet smaller wins.
Higher Variance Slots
High variance slots amount to higher risk because whilst the payouts on these slots are much larger, they are fewer and farther between. You could end up burning through your balance with not a lot to show for it. High variance slots are usually popular with players who prefer games that offer the chance for big wins, and usually gamble bigger bankrolls which help keep them in the game before those big wins light up. But this is the part where high variance slots become just that more exciting and thrilling to play – the wins are that much bigger!
Low Variance Slots
On the flip side, low variance, or low volatility slots are usually popular among casual casino players. Low variance slots are perfect for those looking for smaller and regular wins. For most, it can be more fun to see wins light up on the screen regularly, but low variance slots are easier to keep their balance in check and not get depleted before you land some wins. Choosing a slot based on variance to suit your playing style is a must because you can avoid disappointment during your play session.
Top High Variance Slots UK
New Online Slots
The casino industry’s top game developers like Play N Go, Microgaming and Netent are in a never-ending battle to produce bigger and better slot games. The market is competitive so they need to constantly deliver a more adventurous and wild ride for you when you play online. This is great news for slot players as we are truly spoiled for choice of premium slot games.
Trying out a new slot game can be a very exciting experience. Hundreds of new slots are released every month, so you’ll never be short of something new to try out. Here are some reasons why you should be seeking out the latest new online slots:
- New & Exciting themes, including the latest branded themed in pop culture
- New slots are often more exciting yet still simple to play.
- New slots are more immersive and offer state of the art graphics and sound.
- You can play new slots anywhere as there will be a fully functioning mobile slot
- New and innovative slot bonuses and game features: You’ll explore new features you never knew existed before!
- You can keep up with new slot trends

VIDEO SLOT | VEGAS NIGHTLIFE |
---|---|
SOFTWARE | NETENT |
RELEASED | 2020 |
RTP | 96% |
VARIANCE | HIGH |
FEATURES | FREESPINS, MULTIPLIERS, JACKPOT |
MAX WIN | X300 (BASE) X900 FREESPINS GAME |
THEME | PARTY, VEGAS |
RATING | ⭐⭐⭐⭐⭐ |

VIDEO SLOT | FRUITSHOP MEGAWAYS |
---|---|
SOFTWARE | NETENT |
RELEASED | 2020 |
RTP | 96.60% |
VARIANCE | HIGH |
FEATURES | FREESPINS,MULTIPLIERS, MEGAWAYS |
MAX WIN | 10,000x YOUR STAKE |
THEME | FRUIT, CLASSIC |
RATING | ⭐⭐⭐⭐ |

VIDEO SLOT | RICHES OF MIDGARD |
---|---|
SOFTWARE | NETENT |
RELEASED | 2020 |
RTP | 96.3% |
VARIANCE | MEDIUM |
FEATURES | FREESPINS, WILDS, SCATTERS |
MAX WIN | 435x YOUR STAKE |
THEME | NORSE MYTHOLOGY |
RATING | ⭐⭐⭐⭐ |
New Slots Sites
One of the perks of playing at new slot sites is the guarantee that you can access new slot games and a generous welcome bonus too. Even if you already have a ‘go-to’ slot site that you know and love, there’s never any harm in trying something new. You may find that you prefer the new slot site over the old one.
There are plenty of benefits to be had from trying new sites. Benefits include new slot bonuses, modern innovation, VR games, gamification, better loyalty schemes, access to new slots and progressive jackpots and often you’ll have a huge games portfolio at your disposal.
Trusted New Slot Sites
We have an extremely meticulous process when it comes to finding new slot sites to recommend to our readers. We’re always on the lookout for the latest sites, but before we add them to our top lists, we do a huge amount of research first. We have a team of experts out in the field, testing and selecting the best slot sites for you. Our aim is not to bring you just any old casino. We only bring you the best and most trusted new slot sites in the UK.
Popular UK Slots
All of the most popular online gambling sites offer 1000’s of slot machines online, but which ones are the most popular amongst players? Whilst personal choice mainly comes into it, there are some standout slot games which are hugely popular in the UK at the moment.
The reason they are popular is simple. These slots are designed with great graphics, offer tons of fun and exciting game features and most importantly – they offer you the chance to win huge jackpots. Look out for the following types of slot games which are really hot right now:
- Megaways Slots: Well known popular slots that have collaborated with Megaways to offer larger payouts and jackpots!
- Must Fall Jackpots: Slots that offer large Jackpots that fall every day!
- Slingo Slots: Hugely popular
- Monopoly Slots: Another classic that needs no introduction, but there are plenty of monopoly slots available at reading online casinos.
- Classic Slots: Everyone loves a good old fashioned classic slot now and then, don’t they?
- Branded Slots like Vikings, Ted, Grease, Bridesmaids, Game of Thrones, The Last Kingdom – so many branded slots available!
- Fluffy Favourites slots: Many versions of a UK must play!
- Double Bubble Slot: New slot sites with double bubble slot – hugely popular
- Rainbow Riches: Plenty of charm in these leprechaun themed slots, and plenty of different versions of the game
UK Slots Bonuses
Online casinos are ever-changing to meet the demands of the customer and also the stiff competition of their rivals. One thing that’s always changing at slot sites is the casino bonuses. Rarely, 2 casino bonuses will be the same. when you read the fine print, but there are plenty that is similar, such as the bonus types we help explain below:
Free Spins Bonuses
Free spins bonuses are slots bonuses which are designed to give you a number of free spins on a chosen slot machine, often chosen by the casino. Free Spins are designed to help you sample not only the slot but also to experience the online casino. You can get free spins bonuses on their own or part of a package, usually when you sign up at a new casino and claim their welcome bonus. Sometimes the winning from these spins will be paid as cash and sometimes they will be rolled over into a bonus amount.
Free Spins No Deposit Required
Free spins are exactly the same bonus as above, only you do not need to deposit any of your own money to claim them – the casino will pay! This is a great way to get a taste of a new casino and play no deposit slots. When you receive online slots free spins with no deposit required, make sure you watch out for the bonuses terms and conditions. They are usually far more strict, as they’re entirely ‘free’. No wagering online casinos also hand out slots free spins. but you can keep what you win so these are far more enjoyable and ‘real’ if you ask us, Check them out.
Match Deposit Bonuses
A casino ‘deposit bonus’ is another popular form of casino bonus. When claiming a deposit bonus, the casino will match the amount that you deposit up to a certain amount, usually a percentage and up to a max amount, in or around the £200 mark.
For example, if you claimed a 100% up to £100 bonus and you deposited £50, the casino would award you with a £50 bonus to play with too. The bigger deposit bonuses are usually reserved for new customers claiming “welcome deposit bonuses”. However, it’s not uncommon to see competitive reload bonuses and other reward bonuses because casinos want to retain their player pool and not see their customers play at competitor casinos,
Cashback Slot Bonuses
A cashback bonus is designed to refund some of your losses back to your account and is usually based on how much you play and the amount that you originally deposited. Cashback bonuses are quite rare to find but one thing’s for sure- they do offer good value if you can get a hold of one.
200% Slots Deposit Bonus
A 200% slots bonus will give you twice as much money in a bonus as you put in. For example, a 200% welcome bonus will triple your casino balance. Although rarer to find as they offer such good value, you will find many 200% slots bonuses at recommended UK slot sites. Simply browse our casinos and find the perfect 200% deposit bonus to play slots in UK casinos.
Sign Up Bonus Slots
A Signup bonus is a no deposit casino bonus. You get a no deposit sign up bonus for slots when you create an account. Free sign up bonuses are really helpful in getting a clear picture of whether it is a place worth your money or not.
Slots Bonuses & Wagering Requirements
Make sure that you’re aware that all slot bonuses, no matter where you end up playing, will come with a wagering requirement attributed (unless you opt for wager free bonuses). We’ve mentioned about wagering requirements (sometimes called playthrough requirements) numerous times throughout this website.
But we wanted to make sure when you take a casino bonus of any kind, that you’re aware of some restrictions that may be placed on them. This is to avoid disappointment when you want to cash out for example – but you won’t be able to.
Why Wager Requirements Exist
The main idea behind a wagering requirement is to make sure that customers don’t simply take the winnings and cash out before playing any games. It’s also to make sure that the casino protects itself when giving out so much free money – as that’s what a casino bonus essentially is. A casino is happy to offer a player a reward for signing up, but they need to work for this reward and maintain a safe and healthy casino market. Our top tip for anyone claiming UK slots bonuses is to always read the bonuses full terms and conditions.
Online Slots – Frequently Asked Questions
We’ve tried to cover as much ground and information about slots as we could on this page, but there may be other questions you have on your mind before you start to play any slot online. Below, we have gone to town on some of the most frequently asked questions about online slots. We hope we’ve answered all of your questions, but of course- if not, feel free to contact us – we’d be glad to help out with more information that you’re seeking.
What Makes a Slot Random & Fair?
A slots ‘Random Number Generator’ (or RNG for short) is what makes the slot random and fair. It’s inbuilt into the software and the makeup of the slot and its purpose is to make sure that the game gives completely random outcomes. To ensure that they really are random, all UK slot available at licensed casinos are the third party checked by independent labs, reporting back to the UK Gambling Commission, to ensure that they have a provably fair outcome.
A slots ‘Random Number Generator’ (or RNG for short) is what makes the slot random and fair. It’s inbuilt into the software and the makeup of the slot and its purpose is to make sure that the game gives completely random outcomes. To ensure that they really are random, all UK slot available at licensed casinos are the third party checked by independent labs, reporting back to the UK Gambling Commission, to ensure that they have a provably fair outcome.
Are Online Slots Rigged?
You wouldn’t be the first in your thinking as many people often wonder: Are online Slots Rigged? The answer, of course, is no. Providing that the online slots that you’re playing are licensed by a recognised body and audited by third party regulators, as well as assuming you’re playing at licensed UK online casinos, then there’s no way an online slot can be rigged.
Can I Play Slots On Mobile?
Yes, all of the better casino game providers ensure that their entire slots portfolio is playable across all devices. This means that you can play mobile slots on your mobile, tablet or desktop with iOS, Android and Windows being supported. It’s said that over 60% of casino players prefer to play mobile slots because the experience if much more efficient and many games are better played and adapted for mobiles and devices with touchscreens. Slot providers use the latest HTML5 technology to ensure you get the fastest loading and impeccably looking and behaving slots for your mobile!
Can You Win Real Money Playing Online Slots?
Yes, you can win real money playing online slots, but you will need to play real money slots, i.e you will need to make a real money deposit. To play online slots, all you have to do is deposit at a reputable slot site and choose your favourite slot game (we always recommend looking at the slots with highest RTP % to increase your chances of winning).
Can I Play Free Fun Slots?
If you reside in the UK, then you may have noticed that it’s difficult to play fun freebie slots which are real versions of a slot game, only with fun money balance (free credits). You will also find that it’s rarer to find free no deposit bonuses too.
This is because, in 2014, the UK Gambling Commission imposed tougher restrictions on UK gambling sites to protect consumers from unfair and misleading advertising and also to protect minors who could access and play free slot games and develop gambling problems. You can find some free to play slots at some review sites, but you will have to usually verify your age before you can play them for free – you won’t be able to win any real money, however.
Is It Easy To Learn Online Slot Rules?
Yes although there are different difficulty levels of slots, some are very simple to play and tend to be the ‘classic’ variety (think 3 reel slots with cherries, bells and bars) Then you have slots which are slightly more complex, with added in-game features, such as Spinata Grande slot, Gonzo’s Quest Dead or Alive Slot. On the whole, online slots are easy to get the hang of. All online slots come with dedicated rules and payouts that are applied to that specific game which can be found within the game.
Where Do I Find The Newest Slot Games?
The top UK slot sites will always add new slots on a near-daily basis, from a collection of premium game providers that they work with. Game choice differs from casino to casino, but the best ones, such as those we recommend will always have the newest slots and the best game choice. To help you find the newest slots, we have listed the latest slots as they launch on the market. Our list of new slot sites will offer the new games as well as give you a competitive slots bonus and free spins on new games when you get started.
Can You Win Millions on Certain Progressive Jackpots?
Progressive jackpot slots like Mega Moolah are real and legit games: they’re not fake in any way even though they could sound too good to be true. The top and most well known progressive jackpot games pay out several million to one solitary player when it’s won. Some people find it hard to believe that games with multi-million payouts exist like this, believing that only pooled lotteries can offer a decent jackpot of this size. However, progressive jackpots are produced by every customer playing them (at every casino offering the game) by a portion of their bet contributing to the jackpot. Naturally, over time, the progressive jackpot becomes huge, which is how you can win millions if you play the right progressive jackpot games such as Mega Moolah, Hall of Gods, Arabian Nights, Divine Fortune, Jackpot Giant, Imperial Riches, Major Millions and Mega Fortune Dreams.
Which Slot Sites Offer The Best Odds?
When we’re talking about online slots payouts, the best odds are usually determined by the RTP % (return to player percentage). Many players also look out for the maximum win payout on the paytable within the slot game itself, but it’s the RTP % that plays an important role too. To find the best slots odds, we recommend you find a slot site that offers the well-known slot vendors, such as Netent, Microgaming, Playtech, Play ‘N Go and Big Time Gaming, as they will always offer online slots games with a high and fair RTP%, as well as progressive jackpot slots that offer you the chance to win a fortune (Tip: there are legit progressive jackpot slots which offer multi-million payouts such as Mega Moolah and Mega Fortune games). The best slots sites have thousands of slot games that offer high paying slots, so it’s always best to go with those for the fairest odds that offer the best chance of paying out. You can find a slots RTP % usually on the intro of the game or the pay-table. All of our slot reviews mention the RTP % and variance.
What is the Best Online Slot Site?
This comes down to personal choice most of the time, as some players prefer slots sites with a huge variety of different casino games, while other players place more emphasis on casino bonuses and cashback or betting limits. Therefore the best online slot site really is a matter of opinion. That aside, to find the best ones, you should always look for reputable and reliable casino operators that provide a top-quality casino experience, sites that put their customers’ needs and safety first and will always pay you on time.
How Can I Increase My Chances of Winning Playing Online Slots?
Online slots are always a game of chance so skill doesn’t come into it, unfortunately. Online slots are determined by built-in software – called a “Random Number Generator” or RNG for short. The RNG cannot be manipulated in any way; not by the online casino or by the player. No software or anything you can do can help you win at online slots. What you can do, however, is to play slots with the best odds, or put simply – play slots with the best RTP % (see above for full details) or to play progressive jackpots with 4 or more different jackpots