The UK's best online slots games in 2023

Online slot machine games are by far the most popular offering at online casinos in the UK. With a theme to suit every taste, and mouth-watering top prizes, it’s no wonder the nation loves these fun and exciting games!

So, join us today to learn all about the best online slots. We’ll tell you where to find them, and what to look for in a fantastic slots title. Also, we’ll explain how to pick up the best casino bonuses; to make the most out of your next awesome slot session.

List of the best online slots sites

At, our experts work round the clock, reviewing all the leading online slots UK titles and slot sites on the market. And with new games coming out each month, from some of the world’s greatest software developers, they’ve got their work cut out for them!

But, with over 10 years’ experience in the online gambling industry, our reviewers know exactly what to look for in a great casino and its slot games. So, here they’ve listed their favourite slot providers in 2023. So that you can have the very best gaming experience, from the top sites in the UK. Check it out!

Brand Details & Bonus Data
Kerching Logo First Deposit Up to £500 Welcome Offer and 100 bonus spins on Cleopatra First 3 deposits only, Min deposit £10, Max Bonus £500 and 100 spins on Cleopatra, Selected Slot games only, 30x wagering (dep + bonus), 30x on spins, 5x conversion T&Cs.
Wink Slots Logo No-Deposit Bonus 100% up to £400 + 50 Free Spins Min deposit £20 with bonus code BIGBONUS, free spin are available for 7 days after that they will expire, funds won can be transferred up to £400, must meet wagering requirement, player be over 18+ T&Cs.
Slots Cafe Logo Welcome Bonus 100% bonus up to £200 + 50 extra spins T&Cs.
Betreels Casino Logo No Deposit Bonus £5 free bonus
Arcade Spins Logo Deposit £10 & get 25 spins on Sharknado First-time depositors only (UK exc NI 18+). Min Deposit: £10. Max Offer: 25 Free Spins on Sharknado.

How we rate and review online slots sites

You may not consider what goes into making a great slot site. From the user interface and customer service, to the careful selection process of choosing the best online slots, these casinos and other sites have to consider every aspect of the players’ enjoyment. So that they can offer a 5-star experience to their customers.

So, what exactly do our experts look for when reviewing a casino site with slots? Let’s take a closer look.

Number of slots

Ok, so this seems a little obvious. But one of the first things we take into consideration is the amount of online casino slots a site carries. However, that’s not to say that bigger is better! Just because a site lists thousands of slot titles, it doesn’t mean it’s the best.

We also take into consideration who makes these slots. And how many different types of game are available. For example, does the casino have a good amount of Vegas-style slots on offer? As well as popular themes like Ancient Egypt and Norse Mythology. Plus, do they carry anything unusual? Like music tribute slots and progressive titles?

All in all, it’s not how many slots a site offers that makes it great. But how good a selection they have. And whether there’s enough variety to suit all tastes. And that’s what our experts are really looking for when they vet these sites.

Variety of game providers

When reviewing the best slots sites, we don’t just look at the games on offer. We look for who makes these games. So, while you might not know all the software developers that make the titles that you love, it’s important to us that the sites we list carry a good selection, from a variety of the world’s leading games providers.

After all, how would you feel if you walked into a sports shop and all they stocked was Adidas? Of course, Adidas is a great brand. But, when you visit a sports shop, you want to find other names there, like Nike, Reebok and Puma. And it’s the same with slots! Having a catalogue of games from a range of providers ensures tons of variety and a great amount of choice. Not to mention, each developer will bring special features and other elements unique to their particular games. So, again, this all adds up to more choice for you, the player.

Slots specific bonuses

It’s no secret that free spins to use on slot games are one of the most popular types of bonus around. In fact, it’s very common to see free spins given out as part of a welcome package and/or promo for existing players.

At any online casino, you can see free spins as part of a deposit or no deposit bonus. In the case of the former, you get free spins when you make a deposit with the casino. And, in the case of the latter, you don’t need to pay anything in at all! But, as you’d expect, you get a lot more free spins when you make a deposit, than if you don’t.

Free spins are also often given out when a site wants to promote a new release. This is a great way to get players to try out a new game. And these spins are usually offered to new and existing players alike.

But, while every online slots bonus looks good at first glance, our experts get down to the nitty gritty of these offers. And pick apart the fine print. So that they can assess whether or not these bonuses are truly valuable. Things like heavy wagering requirements, and game weighting, can affect how your slot-specific bonus works. And players can be left disappointed after picking up a great free spins bonus and not being able to adhere to the strict terms.

Therefore, our reviewers don’t only look at what slot bonuses the casino is offering. They also make sure that these deals are fair to players. And, if they aren’t, they don’t get listed with us!

Mobile usability

Nowadays, mobile casinos offer just as good an experience as your laptop or PC. With mobile-optimised sites and dedicated apps providing lightning-fast connections to your favourite titles, and enhanced graphics and sounds, you can enjoy UK slots online from the palm of your hand. And play wherever and whenever you want.

With that in mind, our experts always look to see what kind of mobile experience casinos offer their customers. Do they have a fantastic mobile site that’s bursting with games? Or do they have an amazing app, which you can download and open in an instant? Finally, do they offer any mobile-specific bonuses for slots players?

We look at all these aspects, before bringing you the top sites that offer the best mobile slots experience on the market.

Customer support

Something that a lot of players don’t really consider (until there’s a problem!) is customer support. But, as with any other product, as a client you should expect nothing less than 5-star service. And the best UK online slots sites will have a team of dedicated and experienced staff, that you can contact as and when you need to.

So, when we look at an online casino, we make sure that they have a sterling reputation for customer care. And that they have multiple ways for you to get in touch. As a valued customer, you should be able to easily find an email address, telephone number and web-form. Or, with more modern sites, they often have a live chat feature. So that you can speak to a member of staff in a matter of minutes.

To summarise, the best sites around want to take care of their customers. And we ensure that every site that makes it onto our lists puts their players’ needs first.

UKGC Licence

Finally, the last (and some would say the most important) thing our experts check is that the sites we work with are all legal and licensed to operate in the UK. In this country, every single gambling site must be licensed through the UK Gambling Commission (UKGC). And it’s the UKGC’s job to ensure a fair and safe environment for players in the UK.

Plus, all licensed sites are legally obliged to display the UKGC logo and their license number clearly on their sites. This makes it easy for you to check that the site you're using is legit. But, here at, we only work with UK-licensed casinos and slot sites. So you can rest assured that any site you access through us is licensed and perfectly safe to play on.

Online slots - how do they work?

So, now you know all about how we choose the best online slot sites to be on our lists. But what about the games themselves? What exactly are slot games? How do they work? And which ones are the best to play?

We’re going to answer all these questions. But first, let’s take a look at the two most common types of slot machines and how they operate.

Classic 3 reel slots

First up, we have the classic 3-reel slot. As you can imagine, this means that the slot game has 3 reels! Aside from reels (which are the vertical columns on a slot), you also have rows. The most common format is 3 reels and 3 rows. So, generally, you have 9 symbols showing at any one time.

The first slot machines ever invented were made with 3 reels. And players still love this format. Hence why it’s still used today. As they say, if it ain’t broke, don’t fix it!

So, the next time you visit one of our recommended casinos, take a look at how many games there are with 3 reels. You’ll notice that Vegas slots and traditional fruit machine games are often 3-reelers. And the continued popularity of this tried and tested format isn’t going anywhere soon.

5 reel slots (videoslots)

Nowadays, game makers aren’t restricted by the physical mechanics of actually having to build the slot machines. So, with online slots, the possibilities are endless. And it makes sense that software providers went ahead and added more action to their games. Enter the 5-reel slot!

5-reel slots give you more symbols to play with on each spin. So the paylines increase. It also gives the opportunity to add in more scatters and wilds, which some believe makes the gameplay more interesting.

While certainly more diverse than their 3-reel counterparts, which slot you like comes down to personal choice. While some love the thrill of more modern 5-reel videoslots, a lot of slots players enjoy the classic 3-reel format more. But, the best part? A great online casino will carry lots of both types of slot. So you never have to choose between only one or the other!

Return to Player (RTP) - An important value

If you play slots regularly, then you might notice the letters ‘RTP’ and a percentage next to it. Or, if you haven’t tried slots yet, you might be wondering what on earth we’re talking about! Either way, don’t worry, we’re going to explain everything about this mysterious little acronym.

RTP means ‘Return to Player’. And it’s the predicted percentage of your original stake that the software provider and/or casino estimates you’ll get by playing one slot game over an extended period of time.

For example, let’s say that you put down £100 at the beginning of your session, and decided to only play only one game. And the title you select has an RTP of 96%. This means that, if you play the game for a long time, then you should see back £96 out of the £100 you paid out. Of course, we hope you win much more than you put in! But RTP does give you a good idea of how generous the game is, and how likely you are to at least break even.

That being said, of all the casino games on the market, slots generally don’t have the highest RTP. In fact, the average is 96%. So, whenever you see a slot that has a higher percentage, this is considered a high RTP game. Whereas, anything below 96% is considered a low RTP game.

Highest RTP for online slots in 2023

So, now you’re up to speed on what RTP is, it’s time to take a look at our expert’s pick of the best casino slots with the highest RTP around.

Ugga Bugga - RTP 99.07% - Playtech

This crazy-titled game is as nuts as it sounds! Originally released in 2013, this jungle adventure from Playtech has become a smash-hit success. And it’s thanks, in part, to its incredibly high RTP of over 99%.

Ugga Bugga is a cartoon slot, set in a tropical paradise. With 2 sets of 3 reels and 10 paylines, it's like playing 2 slots at once. But, where this slot gets exciting, is that you can ‘hold’ symbols on the rows. Much like an old-school fruit machine. Plus, with wilds and multipliers making gameplay more dynamic, and low volatility making regular payouts a reality, you’ll love this crazy slot adventure game!

Ooh Aah Dracula - RTP 99% - Barcrest

We love the name of this game! And it shows you straight away that Barcrest created this title to be fun and very tongue-in-cheek. Instead of the sexy vampire trend that has dominated slots for the last few years, this game doesn’t take itself too seriously. And the cartoon Dracula and his buxom lady-friend are cute and fantastically animated.

Not to mention, the insanely good soundtrack and backdrop of a stunning castle both make this game super fun to play. And, with tons of bonus features, including the Hi Roller button and a free spins round, Barcrest have exceeded our expectations with this spooky title.

Mega Joker - RTP 99% - Netent

When it comes to classic fruit machine games, nobody quite does it like NetEnt! Not to be mistaken for the Novomatic game of the same name, you can recognise NetEnt’s Mega Joker in an instant. With its shiny fruit symbols and rubber hose animation-style joker character, this traditional fruity stands out a mile from the crowd.

What NetEnt have also chosen to do, which is quite unusual, is to include the entire machine on the screen. So you really feel like you’re on a casino floor somewhere in Vegas. There’s even wallpaper behind the slot and some pot plants! All these little details make this game a joy to play.

Plus, with a super high RTP and progressive jackpot up for grabs, Mega Joker has a serious side when it comes to winning enormous cash prizes!

1429 Uncharted Seas - RTP 98.8% - Thunderkick

This stunningly animated high-seas adventure is a journey back in time, to the 15th century. And the graphics and imagery are absolutely beautiful, as you take on man-eating sea creatures in your hardy sailing ship across an old-timey map.

Thunderkick are known for creating some pretty unusual games. And 1429 Uncharted Seas is a perfect example of this developer throws out the rule book when bringing their unique slot creations to life. Additionally, with an amazing free spins round, expanding wilds and multipliers all in the mix, this is your chance to sail home, victorious, with all the spoils from your epic oceanic adventure!

The Catfather - RTP 98.1% - Pragmatic Play

This strangely-titled game sees you going up against the hardest criminals and dangerous outlaws, as you try to infiltrate their rich and lavish mafia lives. Oh, and did we mention, they’re all cats? The Catfather is a cheeky, silly and super fun game that’s reinvented the popular gangster theme. And we love it!

Each cat is beautifully rendered. And the special features in this game, tied together with the pretty one-of-a-kind theme, makes this game stand out from the crowd. Plus, with its huge RTP and a massive jackpot win of 5,000x your original stake, this is the most purr-fect slot game around.

Blood Suckers - RTP 98% - Netent

Another vampire-themed slot, this time from NetEnt. Blood Suckers is a fantastic mix of fun and horror, with all the typical imagery you’d associate with this genre of slot. From the sexy, raven-haired ladies and handsome Victorian-looking vampires, to the cloves and garlic and bloodied stakes, this game is an all-out celebration of all things occult!

Aside from the fantastic graphics and well thought-out symbols, this game offers some seriously good chances to win too. Plus, we love the bonus game, where you open up coffins and see what’s inside. Have you got the guts for it?

Kings of Chicago - RTP 97.8% - Netent

Take a trip to 1920’s Chicago now. And meet all the guys and gals, with their sharp suits and flapper dresses. Kings of Chicago takes you into the seedy but glamorous underbelly of the Windy City’s criminal world. With the Chicago skyline in the background, and the sepia-toned colour scheme, this game really feels like it transports you to this magical period of time.

Plus, with super-high RTP, high volatility and top prize of 10,000x your stake, you’ll feel like a gangster yourself, if you manage to snag this stash of loot.

Couch Potato - RTP 97.4% - Microgaming

Get ready to meet the laziest guy in the world, in Microgaming’s Couch Potato. In this quest to do as little as possible, you’re invited to sit on your backside, relax and do almost nothing. Except enjoy this simple and fun game!

The great thing about this title is that it’s been stripped back to basics. So it isn’t full of complicated bonus features. But, it still offers a decent top prize. So, if you like your games straightforward, but still want lots of chances to win cash, then this sloth of a spud is going to be your new best mate.

Golden Colts - RTP 96.5% - Play'n Go

What’s the one thing missing from any great Western-themed slot game? Zombies, of course! In this mad hybrid of a game, you’ll be fighting alongside your typical gang of Wild West outlaws, to find and defeat the zombie Sheriff of some lawless town.

Golden Colts is done really well. For such a crazy theme, the Play’n Go team has really worked wonders and made this title look like a blockbuster movie. We love the graphics, sounds and the fact that Golden Colts has a high RTP and a juicy jackpot prize.

Gonzos Quest - RTP 95.9% - Netent

Probably one of NetEnt’s most popular titles to date, Gonzo’s Quest is a fun and exciting thrill-ride through Ancient Mayan rainforests and buried tombs. Join your guide, the grumpy but very funny Gonzo, as you try to find the lost city of El Dorado.

There are many reasons why Gonzo’s Quest is so popular. But one of them is the use of avalanche symbols, which was invented by the masterminds at NeEnt. Another reason, of course, is that this game pays out big wins! So, with high RTP, medium volatility and a top prize of 2,500x your original stake, this gruff little explorer is actually very generous. 

Online slots bonuses

We’ve already talked a little bit about slot-specific bonuses, like free spins. But there are lots of different casino offers out there. And each one can help you to boost your balance, and reach for those all-important top prizes.

So, what offers do the top slots online sites give out? And which one is best for you? Let’s find out.

Free spins no deposit

First of all, we have one of the most popular bonuses ever: the no deposit bonus. Because the no deposit bonus doesn’t require you to pay anything into the casino to get it, this means that it’s absolutely free. Which, as you can imagine, makes it a massive favourite with casino lovers. Therefore, when you see ‘free spins no deposit’, this is exactly what it means. You can get free spins from the casino, without needing to make a deposit with the site.

But, does that sound too good to be true? Well, don’t worry. There’s nothing hooky about this bonus. And you do indeed get spins for free. However, there are a couple of things you should know about free spins no deposit bonuses before you sign up.

For instance, the amount of spins you actually get isn’t that many. In fact, the average is between 10 and 20. So you won’t be playing for hours on a no deposit bonus.

Another thing that’s super important is to understand the T&Cs attached to your deal. All casino bonuses come with T&Cs, which is to be expected. However, what you really need to take notice of are the wagering requirements and the game weighting. These will tell you how many times you need to play through a game in order to convert your bonus spins into real cash that can be withdrawn.

To summarise, this bonus won’t do much for your bankroll. But it’s the perfect way for you to try out a new casino and slots online UK games, without spending a penny of your own money.

Free spins with deposit required

Free spins deposit bonuses are the other most popular type of offer with slots fans, next to the no deposit bonus. And, in the case of free spins with a deposit required, you’ve guessed it! You need to make a deposit in order to unlock your bonus.

But, why would you choose a deposit offer over a no deposit one? Especially when one requires you to pay and the other doesn’t? Simple. A free spins deposit bonus is always far more valuable than its no deposit counterpart.

This is because you, the player, are now showing the casino that you’re serious about playing. And they instantly become more generous. So now, instead of getting your hands on 10 or 20 bonus spins, you could be looking at anywhere up to and over a hundred spins for free! Suddenly it makes sense, right? Also, the deposit required isn’t usually a large amount at all. Even just £10 or £20 could unlock tons of free spins!

So, when it comes to the best online slots UK sites, you will probably be offered both of these free spins bonuses. And which one you choose is up to you. If you want to try out some new slots for free, then a no deposit free spins deal is the one for you. But, if you want to settle into a proper session and take a chance on the top prize, then a decent amount of spins with a deposit will stand you in good stead.

Standard casino bonus

If you want to play more than just slots, then a standard casino bonus could be your best bet. Instead of free spins, which can only be used on slot games, you can pick up bonus cash. Which can be used to play any of the casino’s offerings.

The most common traditional casino bonus is the ‘match deposit bonus’. This is when the casino will match the amount you pay in with a percentage of extra cash. The average in the UK is 100% or 200%. So, if you pick up a 100% match deposit deal, and you pay in £50, then the casino will match this amount, giving you £100 to play with in total. With this kind of offer, the more you pay in, the more you get in bonus cash. So this deal is great for people who want to load up their coffers before they start playing.

Also, another great thing about standard casino bonuses is that they’re often coupled with free spins as well. As the best slots UK sites offer some of the greatest bonuses around, to entice new players to play. So you might see a 200% match deposit bonus with 50 free spins. Not bad!

As with all casino deals though, it’s imperative that you read the T&Cs before you sign up.

Online slots tournaments

If you can’t get enough of slots, then why not sign up for a fantastic slots tournament? In these competitions, you can play slot games for hours at a time, and win some incredible cash prizes. Not to mention, because you’re going up against other slot players, there’s the added element of competition! Meaning slots tournaments are even more adrenaline-fuelled than just playing the game by yourself.

Finding a slots tournament is easy. Simple check with our lists of trusted and reviewed casinos and top online slots UK sites. There you’ll find casinos that offer some of the most fun and popular competitions around.

How slots tournaments work

Like slot games themselves, slot tournaments are pretty easy to get the hang of. And they’re so much fun! They take place over a certain period of time (usually 24 or 48 hours), and it’s your job to win as many coins as you can during this time. See? Easy!

Once you’ve found a casino from the best online slots sites that we list, then you can sign up and play. First, find out when the next slot tournament is going to start, and how long it lasts for. Then you’ll have to pay to get your place.

Finally, when the competition starts, you start spinning for your life! The key thing here is to try and win as many coins as you possibly can. As the player with the most coins at the end of the tournament is the winner. And will receive the top prize. So, it’s imperative to win as much as you can! Luckily though, there are usually prizes for second and third runners up as well.

To summarise, slots tournaments are for those out there who adore slots and want to play for hours at a time. So, if that’s you, then what are you waiting for? Check out our lists of trusted and reviewed casinos to find your next slot tournament today!

Slots with progressive jackpots

The best UK slots on the market offer some truly eye-watering top prizes. But, if you really want to strike it rich, then you should be looking at progressive jackpot titles.

Progressives are very simple, but have changed the way people gamble online across the world. Simply put, the prize pool in a progressive game goes up the more people play the same game. Or, it ‘progresses’. This is possible because, with every spin, a small part of the players’ stake is put into one giant prize pool. So, the more people play, the higher the jackpot.

It used to be that progressive jackpot games were physically linked across one casino’s floor. But with today’s technology, thousands of people can play a game from all over the world, and the prize pool goes up with every spin, regardless of where you’re playing from. So, titles like Mega Moolah and Mega Fortune have made people millionaires overnight. So, it’s no wonder the world is in love with progressive jackpot games!

Mobile optimised slots

Just like any other industry, casinos and other real money sites have to move with the times. So that means offering players the most cutting-edge gambling options on the market. Mobile-optimised casinos have been around for a few years now. And they get better every year. This is all thanks to game developers bringing out more sophisticated software, including mobile-optimised slot games.

When a game has been made possible for mobiles, it doesn't mean that it has simply been shrunk to size! It's a lot more complicated than that. Mobile-optimised sites offer you the same great experience that you would expect from a PC or laptop. That means incredible crisp graphics, beautiful sounds and no lagging when playing a game. The best slot sites in the UK offer most of their games in a mobile version. So, to find your next great mobile slots adventure, check out our lists of trusted and reviewed casinos. Which all offer mobile-optimised games and/or a dedicated app that you can download directly to your phone.

Low volatility slots vs. High volatility slots

If you've ever played a slot game, or read a best online slots review, you'll notice that people talk a lot about volatility. Just like RTP, volatility gives you a good idea how often the game you're playing will pay out.

Volatility refers to the ratio of payout frequency and payout quantity. For instance, if you see that a game has low volatility, this means that it will pay out often. However, the prizes that are given out will be low in value. So, low volatility slots are great for players who like to play regularly but not for long periods. Because you'll get lots of little prizes during your gameplay.

On the other hand, high volatility slots do not pay out often at all. But, when they do, the prizes tend to be far greater in value. Therefore, high volatility slots are usually preferred by people who like to spend a long time on one slot title.

Which one is better is a matter of personal choice. Some people like low volatility slots because the wins come thick and fast. Whereas other people love the thrill of reaching for huge prizes over a long, drawn-out session.

What to think about when picking your online slots casino

So, we've talked a lot about what experts look for in the best online slots sites. But, as a player, what should you be looking at when choosing your next casino? Let's take a look.

Do they have a good slots bonus?

As we've seen, there are tons of bonuses available for slots players. So it would be silly not to take advantage of a great bonus that can help you to have a better time playing.

As a new player at an online casino, you'll be offered a whole host of different bonuses. Which one you pick will depend on what kind of experience you want to get out of your gaming session.

We recommend looking at free spins no deposit bonuses, free spins deposit bonuses and general casino bonuses, as detailed previously.

Do they offer games from your favourite developers?

Every game that you know and love at an online casino has come from some of the best software developers in the world. Luckily, in the UK we have access to all of these great games providers. As well as new up-coming companies, who are hoping to make the next great slots title.

So, with that in mind, when looking at a casino site make sure they have lots of different games from lots of different providers. This will guarantee a great selection of titles with lots of different themes and styles for you to choose from. Also, if you have a favourite developer yourself, then make sure that the casino has a nice collection of games from that company.

Are they licensed in the UK?

As we've explained, every gambling site that operates in the UK must be licensed and regulated by the UK Gambling Commission (UKGC). So, it's imperative that you make sure the site you're on carries the UKGC logo. As this means it is legitimate and safe to play on.

Therefore, look for the UKGC logo, which should be clearly displayed in either the header or feature of the website. If you cannot find the logo, it's possible the casino is not registered to operate in the UK. And should be avoided.

But, if you're in any doubt, simply choose one of our listed sites. Our experts make sure that every gambling site we list is licensed to operate in the UK. So that you only get the best online slots from the top sites in the country.

Do they offer your preferred payment methods?

When it comes to making deposits and withdrawals at a casino, you want lots of different options. This is because sometimes it might be more convenient for you to pay with your debit card. And other times you may want to pay with your mobile, for example.

Therefore, you should always check how many options the casino offers you. So that you have the freedom to choose the best payment option for you at any given time. A great selection of payment methods also shows that the casino is taking its customer service seriously.

Popular payment methods include:

  • Debit cards, like Visa and Mastercards
  • E-Wallet, such as Skrill and Neteller
  • Pay-by-mobile options, like Boku and Paysafecard
  • Bank transfer

Are they optimised for mobile play?

Another thing that you should look for when choosing a great new casino is if the site is fully optimised for mobile play. As we know, mobile casinos are super popular amongst people that own a smartphone. So, the best online slots can be found on mobile-optimised casino sites and/or their dedicated apps.

If you want to be able to play on the go, it's essential that you find a casino that offers its games on your mobile phone. Luckily, all the sites we list have some of the most cutting-edge technology available to them. Therefore, they offer some of the best mobile gaming experiences on the market.

Free slots play

If you've never played slots before, or you found a new game that you’d like to try out, then why not try the free play version first?  Free play slots are the perfect way to practise your skills before playing for real money. And the best part is, UK casinos offer free play versions on most of their slots titles.

So, how do you play slots for free? Let's take a look at your two main options.

Try slots in demo mode

The easiest way to try out starts for free is by selecting the ‘demo’ mode at your favourite online casino. Demo versions give you the exact same slot game as the real-money title. So the gameplay is exactly the same as it would be if you were playing for cash. The only difference is that you can never win any real money. But that also means you never have to pay in anything.

Demos are fantastic for people who want to get to feel for a new game before they play for real money. And finding demo versions is easy. Simply visit the best slots online sites, and select ‘demo’ on the game you want to try. After that, it’s easy to switch to the real-money version, if you choose to do so.

Playing with a no deposit bonus

Another way to play slots for free is by picking up a great no deposit bonus. As we've seen, free spins are often part of these offers. And this means you don’t have to pay into the casino in order to get your spins. So, you can play and win real money with a free spins no deposit bonus.

However, it's important to remember that the amount of free spins you will get is relatively low. So you won't be able to play for very long on this type of bonus. But, that being said, it might just be enough time for you to get a good enough feel for the game. In which case, you may decide you want to continue playing and make a deposit.

New online slots in 2023

One of our favourite things about casino slots online is that they are forever changing. With software giant's wanting to stay ahead of the game, as well as smaller developers trying to earn a good reputation, this creates a huge demand for new slot games. That’s why we now see hundreds of new titles released every single month.

Plus, with advances in technology moving quickly, games companies are bringing out bigger and better releases all the time. Furthermore, with Virtual Reality and AI gaming on the rise, there's no end to the possibilities with online slots!

To find the latest and best slots on the market, simply check our lists of trusted and reviewed casinos and slots sites. We only work with the very best providers, so you're guaranteed to find the freshest new releases here at

We've talked a lot today about software developers. These are the clever minds responsible for every game that you enjoy at a casino.

But, who are the people that make the best online slots? And what makes their games so good? Let’s take a look at some of the UK’s most popular slots developers.


For over 20 years, NetEnt have been providing high-end games to the land-based and online gambling industry. And they prove themselves to be genuine pioneers of new gaming experiences time and time again.

Not only do NetEnt make some of the best-known table games around, they also have a catalogue of almost 200 slot titles. Some of their most popular include the smash hits Gonzo’s Quest and Starburst. But they’ve also brought out some of the greatest music and TV series tribute slots, like Guns N Roses and Narcos as well.


Another old-timer! Microgaming have been around since 1994. Making them one of the most established games providers in the world. And they’ve managed to stay ahead of the game for over 25 years.

Plus, with almost 600 slot titles to their name alone, it’s no surprise that Microgaming’s name is synonymous with amazing slots. Just a few of their most popular modern releases include Thunderstruck, Immortal Romance and Mega Moolah.


Still relatively new, Thunderkick arrived on the scene back in 2012. And was started by 2 rebellious Swedish software whizzes who wanted to shake up the gaming world. And shake it up they did!

Thunderkick make some of the most unusual and unique slots we’ve ever seen. And have some great twists on classic themes. Check out Eskeletos Explosivos and Fruit Warp for some seriously sleek and fun new experiences.


Another gaming giant, Playtech have been leaders of industry for over two decades. Founded in 1999, Playtech are one of the biggest developers in the world. And supply betting software to huge names in the gambling sector, like William Hill and Ladbrokes.

But, not content with conquering the betting market, Playtech are also responsible for hundreds of super-popular slots, including Batman and Catwoman Cash and the hugely successful Age of the Gods series.


Land-based casino legends, Novomatic, started out by supplying physical machines to casinos, before taking the world by storm and getting involved in online gambling software in the early 1990s. In fact, Novomatic were one of the first gaming companies in the world to introduce touch-screen tech to their titles. And since then, they’ve managed to stay top of the pile.

Furthermore, they converted some of the world’s best-loved brick-and-mortar casino games into digital versions. So that you can enjoy Vegas-style slots from the comfort of your own home.


Another company that’s still considered quite new, Yggdrasil exploded into the industry in 2013. But that hasn’t stopped them from offering a ton of different products, and sweeping a load of rewards. In fact, they’ve picked up some pretty impressive silverware in their 8-year career, including Software Rising Star and Slot Provider of the Year awards.

And their slots are some of the freshest and fun we’ve seen in a while. Popular titles include Hippo Pop, Tiki Infinity and Ancient Eclipse.


Finally, we end our list with the other huge name in the gaming industry; IGT. These giants have been making casino games since 1990. And nowadays have one of the most impressive slots catalogues on the planet.

You’ve probably already played a ton of IGT games. But, to name a few of their most popular titles, check out Cleopatra, Golden Goddess, Da Vinci Diamonds and Siberian Storm. As well as the incredible Wheel of Fortune slot.


Slots game selection comes down to personal taste. So no one game is better than any other. It just depends on what type of game you like to play. For example, you might love 5-reel video slots, with tons of special features. Or perhaps you prefer a classic 3-reel fruit machine, with solid gameplay but no bells and whistles. The good news is, whatever your taste, there’s a slot game out there for you!

What is a progressive jackpot in a slot game?

‘Progressive jackpot’ simply refers to a cash prize which is added to all the time, until someone wins it. By their very nature, progressives build in value and then drop down to 0 once the cash prize has been swept. This means that if a progressive title has not been one for a while, the jackpot can reach into the millions of pounds.

Which software provider makes the best slots?

In the UK, we're lucky to have access to some of the greatest software providers in the world. But, while we don't think there’s one software provider that is better than all the others, it is true that a lot of games developers have more experience in the industry than others. So, some of the most popular and most experienced providers include IGT, Microgaming and NetEnt.

Do all online slots work on mobile?

Almost all, yes. Casinos these days work hard to fully optimise all their games. So that you can play them from your mobile phone or tablet. This means that almost every game will be available to play on your phone. However, there still might be one or two that have not quite made the leap yet.

What's a good RTP for online slots games?

The average RTP on a slot game is 60%. This means that anything above 60% has a high RTP. By contrast, anything below 60% has a low RTP. However, this does not mean that games with low RTP aren't good. It simply means that the return-to-player percentage is slightly lower than your average slots game.

How can I get free spins on slots?

There are two ways to get free spins on slot games. The first is to select demo versions of the games you want to play, which are completely free. However, with a demo version, because you  don't deposit any real money you also can't win any real money back. So, if you want to play a real-money slot game for free, then look for a great free spins no deposit bonus.

Are online slots rigged?

No. Online casinos used something called Random Number Generators (RNGs), which power slot machines and their reels. These RNGs mean that each spin is completely unique. And because the software is so secure, no third parties can tamper with it. Therefore, every slot game at a licensed UK casino is perfectly safe and fair to play.

Do slots have higher RTP than blackjack?

No. The average RTP for a slot game is 60%. Whereas, for blackjack it borders on more like 99%. It is well-known that blackjack is one of the highest RTP games at any casino. And this is also due to the skill element that comes with playing this type of game. On the flip side, slots are completely based on luck. Meaning that anyone can win them, regardless of skill!