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What are the best online slots casino sites available to UK players?

Want to find the best UK slots casino sites, but don’t know where to start? Good news – our expert reviewers have done the hard work for you and compiled a complete list of the top UK internet casinos for slot gamers. No stone has been left unturned with each online casino being tried, tested and reviewed for your convenience. See our pick of the best online UK slots casinos below.

The safety and security of our visitors is of paramount importance to us. We like to know you’re in safe hands, hence why we only list the best casino sites that have been licensed by the UK Gambling Commission.

Uk licensed

We understand the importance of speed and security when playing at an online casino. Therefore, we only list the best UK casino sites that offer a wide range of banking options to allow for instant deposits and lightning-fast withdrawals.

Fast & Secure

We’ve assembled a specialised team of online casino experts who know exactly what to look for when reviewing the top UK casinos. We put each site through our rigorous review process to determine what’s hot and what’s not.

Reviewed by experts
Uk licensed

UK licensed

Reviewed by experts

Reviewed by experts

Fast & Secure

Fast and secure

Large Game Provider Selection
1

100% up to 

£300

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Book of Dead

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Book of Dead

Starburst

Everyone’s played Starburst – and if you haven’t, then it’s time to find out what makes these cosmic reels so dazzling.

Starburst

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Use your skills to keep the vampires at bay and unlock the bonus game in this fang-tastic slot.

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99points

Get Bonus Visit Playzee Casino
205 people already signed up

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T&C’s apply

Terms and conditions: 18+. New players only. Valid for 15 days after 1st deposit. Min Deposit £20 Max Bonus Bet £5 Winnings from spins capped at £50 First 100 Zee spins 10/day. Full terms apply. BeGambleAware.org Full bonus terms.

Player Favourite
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Starburst

Everyone’s played Starburst – and if you haven’t, then it’s time to find out what makes these cosmic reels so dazzling.

Starburst

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Skulls, disco balls and tacos await you in this quirky slot inspired by the famous Electric Six song.

Danger High Voltage

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Travel back in time and join Rich Wilde on his mission to steal the legendary treasures of Ancient Egypt.

Book of Dead

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309 people already signed up

Terms and conditions: 18+. Min. deposit: 10£/€/$. Max. bonus: 200£/€/$. Offer valid on first deposit. Offer only applies to new players. Games are given as follows: 20 games and 100% bonus upon first deposit. All Bonus Terms & Conditions Apply. Full bonus terms.

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Terms and conditions: 18+. Min. deposit: 10£/€/$. Max. bonus: 200£/€/$. Offer valid on first deposit. Offer only applies to new players. Games are given as follows: 20 games and 100% bonus upon first deposit. All Bonus Terms & Conditions Apply. Full bonus terms.

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Get re-spins every time you win in this colourful slot that looks just like a classic arcade game.

Reel Rush

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Travel back in time and join Rich Wilde on his mission to steal the legendary treasures of Ancient Egypt.

Book of Dead

Jumanji

NetEnt’s Jumanji slot is a stunning take on the beloved film and it’s got countless features, including a board game.

Jumanji

97points

Get Bonus Visit SlottyVegas.com
174 people already signed up

Terms and conditions: Non-Deposit Free Spins must be used within 7 days of being credited. Winnings derived from promotional free spins will be converted to bonus funds with a wagering requirement of x35 the value won. Full bonus terms.

T&C’s apply

Terms and conditions: Non-Deposit Free Spins must be used within 7 days of being credited. Winnings derived from promotional free spins will be converted to bonus funds with a wagering requirement of x35 the value won. Full bonus terms.

Brand New Casino
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Starburst

Everyone’s played Starburst – and if you haven’t, then it’s time to find out what makes these cosmic reels so dazzling.

Starburst

Immortal Romance

Follow the sensual story of Sarah and her vampiric love affairs to get lucky in the Chamber of Spins.

Immortal Romance

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Use your skills to keep the vampires at bay and unlock the bonus game in this fang-tastic slot.

Blood Suckers

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T&C’s apply

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5

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In this tribute to Norse mythology, the strike of Thor’s Hammer yields the most powerful fortunes.

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Pharaohs’ curses may be lurking in the Ark of Mystery, but the treasures that lie ahead are worth it.

Ark of Mystery

Danger High Voltage

Skulls, disco balls and tacos await you in this quirky slot inspired by the famous Electric Six song.

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T&C’s apply

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Book of Dead

Travel back in time and join Rich Wilde on his mission to steal the legendary treasures of Ancient Egypt.

Book of Dead

Fire Joker

The most hot-headed god of Ancient Rome is here to give you some burning bonuses in this mythical slot.

Fire Joker

Gonzo's Quest

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Gonzo's Quest

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Get Bonus Visit Casinogods
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T&C’s apply

Terms and conditions: 18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Full bonus terms.

7

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£200

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Book of Dead

Travel back in time and join Rich Wilde on his mission to steal the legendary treasures of Ancient Egypt.

Book of Dead

Asian Beauty

With their grace, charm and generosity, the five daughters of the Emperor could make you a happy player indeed.

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T&C’s apply

Terms and conditions: 18+. New players only. £10 minimum deposit. 40x wagering applies. Bonus valid for 14 days. Minimum £5 wager required to activate 200 bonus spins. 20 spins will be credited per day for 10 days after qualifying deposit/wager is met. Spins valid for 72 hours from credit. Codes required for 2nd to 4th deposit. Skrill and Neteller deposits not eligible for welcome offer. Full bonus terms.

Want to discover the best slots online casinos in the UK?

Searching for the best and most popular online casino slot games around? Want to enjoy the most beneficial bonuses? Are you on the hunt for mobile gaming complete with top-notch customer service? Our sites all offer you:

  • The most rewarding welcome bonuses with transparent terms
  • Lucrative VIP programs which reward customer loyalty and can boost your earnings
  • Expansive choice of slot games boasting cutting-edge graphics, plenty of themes and interactive bonuses
  • The highest ‘return to player’ (RTP) available according to statistics
  • Simple cashier options for your convenience

What we do

What we do

Our job at BestUKOnlineCasinoSites is to deliver honest reviews to you, the players. To achieve this, we recruit industry experts who adhere to a finely-tuned system which helps us to score and judge each individual UK casino. Because we consider all aspects of the casino you will know exactly what to expect when you sign up, from what type of welcome bonus you’ll get to how you can get in touch with customer support. So, what are you waiting for? Let’s get started.

What we do

Seal of approval

We are extremely selective with the casinos we recommend and have a 4-step process we use to ensure only the best sites make it to our list. We’ll only ever suggest casinos to you which offer:

Secure

A legitimate platform where your funds will be safe, licenced by the UK Gambling Commission

Bonus

Welcome bonuses which offer genuine value and help boost the value of your deposits

software-provider

A wide selection of titles from respected casino games developers

bank-methods

Wide choice of cashier options for fast, simple deposits and withdrawals

support

Multiple options to get in touch with the team should you need any help

Reworded 4-step review process

You can play at the best slots casinos, safe in the knowledge that our team have carefully vetted each one. Our four-step process ensures that you play online slots safely. Most importantly, you’ll be playing at casinos that offer you a fun and enjoyable experience.

1

We examine a site’s license and integrity

Before we do anything else, we need to make sure the slots casino is legitimate. A large part of this is checking whether it holds a valid UK Gambling Commission license. This is non-negotiable; any casino which doesn’t hold a UK valid is scrapped from our list.

But we don’t stop there. We also do due diligence on the casino’s reputation. Deep research on player reviews and feedback helps us unearth any issues such as withdrawal issues or non-payments.

licensing
customer-support
2

We test its cashier and customer support

To test the slots games on offer, our expert reviewers make a real money deposit. This allows us to assess how easy it is to upload funds to the site. Typically, this will involve making at least two deposits. One will be made with Visa, and another with an e-wallet

We also take this opportunity to test the customer support capacities. Sites which offer bi-lingual support get higher marks. Similarly, casinos which offer multi-faceted ways to get in touch such as live chat, email and phone will also climb the rankings. But our reviewers’ main concern will always be the interaction with staff and the level of help they can provide.

3

We explore the site’s games and make a cash out

Once the deposit has been made it is time to put it to good use by testing a wide variety of slot machines. We choose different titles and slots game types. But, just as importantly, we test them across various devices such as desktop, tablet and mobile.

Regardless of the results, we ensure there are enough funds in the account to make a withdrawal. The process is meticulously timed and compared to the reported times on the website. Several days later our reviewers can determine how accurate the casino’s withdrawal times are.

withdrawals
final-verdict
4

The last word

Once we’ve completed these steps, we can create an idea of how reliable the casino will be for players. If it has plenty of potential, we will then begin an in-depth review of every aspect of the casino.

We take pride in the great level of detail that goes into each review, and believe we have the most complete list of the best UK slots casino sites available. And, to sweeten the deal even more, you can claim a special bonus when signing up through our site.

We examine a site’s license and integrity

licensing

Before we do anything else, we need to make sure the slots casino is legitimate. A large part of this is checking whether it holds a valid UK Gambling Commission license. This is non-negotiable; any casino which doesn’t hold a UK valid is scrapped from our list.

But we don’t stop there. We also do due diligence on the casino’s reputation. Deep research on player reviews and feedback helps us unearth any issues such as withdrawal issues or non-payments.

We test its cashier and customer support

customer-support

To test the slots games on offer, our expert reviewers make a real money deposit. This allows us to assess how easy it is to upload funds to the site. Typically, this will involve making at least two deposits. One will be made with Visa, and another with an e-wallet

We also take this opportunity to test the customer support capacities. Sites which offer bi-lingual support get higher marks. Similarly, casinos which offer multi-faceted ways to get in touch such as live chat, email and phone will also climb the rankings. But our reviewers’ main concern will always be the interaction with staff and the level of help they can provide.

We explore the site’s games and make a cash out

withdrawals

Once the deposit has been made it is time to put it to good use by testing a wide variety of slot machines. We choose different titles and slots game types. But, just as importantly, we test them across various devices such as desktop, tablet and mobile.

Regardless of the results, we ensure there are enough funds in the account to make a withdrawal. The process is meticulously timed and compared to the reported times on the website. Several days later our reviewers can determine how accurate the casino’s withdrawal times are.

The last word

final-verdict

Once we’ve completed these steps, we can create an idea of how reliable the casino will be for players. If it has plenty of potential, we will then begin an in-depth review of every aspect of the casino.

We take pride in the great level of detail that goes into each review, and believe we have the most complete list of the best UK slots casino sites available. And, to sweeten the deal even more, you can claim a special bonus when signing up through our site.

We value your time and money. That’s why only the best online slots sites in the UK make it to our closely monitored shortlist of recommended online casinos.

John Taylor - Casino Expert

Playing Online Slots

Playing Online Slots

Online slots are some of the most popular casino games, whether you are after a quick spin on the latest titles or want to hit a progressive jackpot. Depending on the games providers, online slots come equipped with exciting bonus rounds, high and low betting limits and many different themes.

As opposed to the old school fruit machines, which have a set order of symbols on the reels, video slots don’t have actual reels that spin, but randomly generate the symbols on each reel. Even though all the slots work the same way, they all have different symbols and different value to each symbol. And that’s why you should always check the paytable before you hit the spin button

The spin button activates the reels made up of symbols. Before each spin, you bet an amount of money and win if three or more symbols line up along the payline. The amount you win depends on the value of the symbol that the reels landed on and the size of your wager. In some cases, if you are lucky, symbols may win you a 100x your bet.

There are many different types of slots games available, and it’s useful for you to know what they are and how they work. And to be able to play for real money and have fun, you also need to understand the reels, paylines and other important features. All of which we will cover further down the line in this handy online slots guide.

Playing Online Slots

What Types of Slots Are Out There

  • Classic 3-reel Slots - These slot games are based on the old fruit machines that you can find at land-based casinos. The 3-reel slots are the simplest of games and usually have just one payline. The winning combination usually consists of 3 similar symbols but can also consist of 2 or 1 symbols.
  • 5-reel Slots – Also known as video slots the 5-reel slots are some of the most popular modern games that have multiple paylines and bonus rounds allowing you to win big. For more fun, 5-reel slots sometimes come in more reels and up to 100 paylines.
  • Jackpot Slots - Also called progressive slots they are the slots that give you a good chance at winning a life-transforming jackpot. Progressive jackpot slots such as Mega Fortune are linked across different casinos and grow with every wager players make. When a player hits the main reward, the jackpot is reset until it’s triggered again.
  • 3D Slots - They are video slots with enhanced HD graphics that you can play for free or real money on a desktop or almost any mobile device.
  • Free Slots - You’ll often find that the best online slots sites offer free slots. So next time you want to hit that spin button to play for real money, play for fun first. In our reviews, you will often find us mentioning whether the real money slots are also available in demo mode. This option will allow you to investigate your odds and have a better feel for the game.

Pros and Cons of Progressive vs Regular Slots

Winning big with progressive slots is an enticing idea, but are they always the best option? We looked at some advantages and disadvantages or regular slots too to find out which choice could be the best for you. To make it easy, we combined a quick table to show that you don’t always have to go for one or another. Give yourself a chance to mix your play and see how it pans out.

Progressive slots

Pros
  • Progressive unfixed jackpots

  • Can win life-changing prizes

  • Bigger casino bonuses

Cons
  • Risk of losing big by placing a single bet

  • Higher costs per spin

  • Lesser game choice

Regular slots

Pros
  • Potentially profitable

  • You always have a chance to win big

  • Casino bonuses and loyalty programs

Cons
  • Smaller winning prizes

  • There could bad bets

  • Games can be dull

Online Slots Explained

A slot machine is programmed to pay out money randomly. When you click spin, the games software determines what happens next and then presents you with the visuals such as sounds and graphics. While, in theory, all online slots work the same way, it’s important to know what different elements are in the game to make the most of it.

Spinning the Slots Reels
spinning-slot

Spinning the Slots Reels

Slot reels are the vertical rows on your screen that are set to move when you press the spin button. The most common are the classic 3-reel or the more modern 5-reel slots. They are multiplied by a set number of columns which turn reels into a grid. For example, you can have a 5 reel, 3-row slot game like NetEnt’s all-time classic Starburst.

When you spin the virtual reels, the slot machine is choosing which symbol should appear on which reel. This action is completely random, and therefore it’s hard to predict which symbols you will have landing on your reel next.

What is a Payline?
payline-1

What is a Payline?

Payline is a combination of symbols on an online slot machine which gets activated when you start spinning. It’s here to help the slots machine to work out if you’ve made a winning combination. In other words, whether you managed to compile a row of matching symbols.

If you have, a payout will be made based on the value of those symbols and the amount you bet on each line. And, depending on what type of reel you choose, the payline will always have to strike the same number of symbols. So, if you are playing on a 5-reel slot, the payline will display five symbols.

Slots Reels and Paylines: How Many are There?
payline-2

Slots Reels and Paylines: How Many are There?

The first ever video slot invented had only one payline whereas these days, depending on the game's developers, there can be as many as 50+. And those are not just horizontal paylines. Beyond the traditional, they come in many different shapes right across your reels: zigzag, trapezium, diagonal; you name it.

Reels too have evolved with time. The classic old school slots contain three reels while the contemporary slots games come in 5, 7 and sometimes even 9 reels.

Can You Choose How Many Paylines You Can Bet?
payline-3

Can You Choose How Many Paylines You Can Bet?

Yes. Most slots will let you choose how many paylines you want to bet. You can bet one or bet max; it’s up to you. Your paylines are numbered so you may have 1 up to 10 or 12 paylines to play, depending on the slot. Playing with more than one payline increases your winning odds, but it also requires you to spend more money per spin.

If flexibility in games is important to you, look out for variable paylines. Being able to adjust paylines is a big bonus, especially if you are playing with a limited budget. In this case, you can choose how many lines you want to bet on as opposed to fixed lines and get multiple wins from just one spin.

UK-Player Specific Bets
uk-flag

UK-Player Specific Bets

Before you start betting, ask yourself a question: Do you prefer expensive bets with more paylines, or are you after smaller ones? If you are after big wins, then maximum betting is your best friend. But, it will cost you more than choosing a smaller win.

Specifically, for UK players, the highest basic stakes tend to be £45 for Microgaming, £100 for NetEnt, £500 for IGT and £60 for WMS games.

A word of advice from us is also to check whether the game has a 'feature purchase' facility like Barcrest and especially Big Time Gaming slots such as White Rabbit. Here you can bet 100x the max £20 stake to buy into the free spins bonus which results in possible stakes of £2000 a spin.

The most volatile providers are generally Merkur and Big Time Gaming followed by Novomatic, but this is wholly down to specific games as they also produce low-medium variance games. A good example is Merkur’s Magic Mirror Deluxe and Knight's Life which are extremely volatile as is BTG's Donuts or Novomatic's Rumple Wildspins and Book of Ra Deluxe.

Remember, when playing games in demo mode at most casinos, the stake won’t normally show in pounds, but simply as credits. The currency only appears in real-play mode.

Slots Bonus Features

The bonus feature is one of the most rewarding parts of a slot game, and many players managed to walk out with big wins. There are many different types of bonuses available, but mostly, the feature rewards you with bonuses, multipliers, and free spins.
Other popular bonus games include a wheel of fortune and even a board game style bonus round. Both will give you a fair chance to unlock bonuses and multipliers. But the best way to find out what bonus games are on offer is to play slots for real money.

Wild Symbols in Slots Games
wild

Wild Symbols in Slots Games

Wild is a substitute symbol that mirrors the symbol closest to it on the reels to create a winning line. But beware that in some games, you will not be able to replace symbols like scatters, free spins or bonus rounds.

Wilds sometimes have a unique ability to be sticky, which means once they land on the reels, they “stick” in the same place and stay on the screen for several spins.

There are many more wild symbol variations such as expanding wilds and stacked wilds which, if landed, could create you endless winning combinations.

Scatter Symbols in Slots Games
scatter

Scatter Symbols in Slots Games

Scatter symbols are the ones you want to look out for on the reels. They are less available on 3-reels slots machines but more common on the modern 5-reel slots. Are they important in your gameplay? Absolutely. They hide bonus rounds. If you are lucky to trigger a bonus round feature, that’s when you have a big chance to boost your bankroll.

To unlock a bonus round, which comes in the form of free spins or various mini-games, you’ll need to (usually) land three scatter symbols which only have to be on screen and not on paylines.

Multipliers in Slots Games
multipliers

Multipliers in Slots Games

Not all real money slots come with multipliers, but those that do can be a goldmine. The main job of a multiplier is to increase your winnings by a pre-set figure. If you land a multiplier, you can expect them to double, triple, or even increase your wins up to 1000X.

The most common are free spins multipliers where you can choose your multipliers that are hidden underneath an icon. These types of multipliers can bring you substantial increases on wins.

In some cases, wild and scatter symbols can also double as multipliers. As you land them on the reels, you can create a winning symbols combination and that way also increase the value of that combination.

why-play-online-slots

Why Play Online Slots?

why-play-online-slots

It’s not hard to see why real money slots are loved by many punters. They are easy to understand and play and, if you are lucky, can turn rags into riches. And as technology improves, the advantages of playing online slots grow day by day turning them into one of the most popular online casino game. Here’s why:

  • The convenience of playing from the comfort of your own home.
  • Playing real money slots on the go on your favorite mobile device.
  • A possibility of spinning slots for free before playing for real money.
  • A choice of generous slots bonus offers when playing at slots casinos.
  • Massive progressive jackpots with a chance to win significant prizes.

Myths and Legends of Online Slots

myth-legends

You’ve probably heard a boatload of misconceptions about online slots machines. We are not surprised. With the wealth of information on the internet about how to play and how to beat slots machines, it can get overwhelming. It’s easy to fall for various strategies so here’s what some “experts” say that is untrue:

  • Three-reel slots have much better odds than five-reel slots.
  • You can win more money with video slots than with classic slots.
  • If a slot machine is not paying out, it means it’s due to hit soon.
myth-legends

Slots Terms and Slang

You’ve probably heard a boatload of misconceptions about online slots machines. We are not surprised. With the wealth of information on the internet about how to play and how to beat slots machines, it can get overwhelming. It’s easy to fall for various strategies so here’s what some “experts” say that is untrue:

Terminology list

5-reels

An online slot with three rows and five reels.

Return to Player (RTP)

It determines how much a slot machine will on average pay you back. If a game has a 90% RTP, then this means the house has a 10% house advantage.

Random Number Generator (RNG)

It’s an online programme that controls the spin of the slot reels. RNG cycles through various combinations at about 1000 times a second and is independently audited for fairness.

Autospin

Feature which allows you to preselect several auto spins.

Bet Max

The largest amount of coins you can play on one spin.

Bonus Feature

Additional way to win within the game.

Coin Size

The denomination of the coin that you must play within a slot game.

Expanding Wild

A special wild symbol that stretches to fill up the entire reel it appears on.

Fixed Lines

A slot with paylines set at a certain amount.

Fixed Jackpot

Slots with fixed jackpots will pay out the same fixed amount regardless of how often they are won and how many players are playing.

High Volatility

An indicator of how often and how much you can expect to win during your gameplay. The higher the volatility, the fewer the payouts. However, the payouts of high volatility machines are usually higher than those of low volatility slots.

Hot Machine

A slot machine which is expected to give a payout at any given moment.

Near Miss

The term would occur when you land two winning combinations directly on the payline with the third combination appearing just above or below the payline.

Pokies

In Australia and New Zealand, a pokie is an online slot machine.

Symbols

The icons on the slots reels which you must connect on the payline to create a winning combination.

Players FAQs About the Best Online Slots Sites: How to Play and How to Win.

Are you feeling confident to take a swing at some of the best online slots in the UK? Just before you go, check out these handy FAQs first.

If I play a slot machine that’s not paying out, does that mean it’s due to hit soon?

No. Every play in the slot machine is independent of each other. Its past activity can’t determine its future movement. If an online slot machine hasn’t been compromised in any way, it is not possible to predict its behaviour. There’s too much randomisation built into programming a slot and slot machines today use a computer to generate random numbers, which will determine the outcome of your game.

How can you determine which slot machines have the best odds?

When games providers create slots, they decide what percentage of how much the machine is set to pay you back. The range of the payout usually varies from a low RTP of 85% to a high RTP of around 98%.

So how do slots casinos decide which online games should pay back 85% and which 95%? Simple. They use denomination. The higher the denomination of the real money slot, the more it’s set to pay back.

How can I win a jackpot on a real money slot?

Slots are a game of luck. But you can adjust your gameplay to give yourself a fair chance at winning a jackpot. First, you need to find the best online slots sites that are fair and encourage responsible gambling. UK-focused slots casinos offer way more transparency than the US counterparts due to strict gambling regulations. You can check out our list at the top of this page to see what’s hot right now.

Second, check how much you need to wager to be eligible to win a jackpot. Sometimes you’ll have to bet the max wager to win the big prize. And don’t forget the RTP. Most of the slots will have this information handy so be sure to check it out. And lastly, wager safe, around 2% of your bankroll per bet to minimise the risks. And, always keep track of your cash coming in and out.

Can I play real money slots on my mobile?

Absolutely. There are as many gamblers who play online slots for real money as are playing on a desktop. More and more games providers focus on mobile-friendly real money slots making it easy for you to access your favourite games from anywhere. The majority of our best online slots sites contain mobile-optimised games for mobiles and tablets. Some may offer a slots casino app while others are easy to play directly in your browser.

What does volatility mean in slots machines?

Higher volatility results in higher risks and you can badly lose until you line up the symbols perfectly on the payline. High Volatility games are popular among gamblers who don’t mind withstanding dry spells and are prepared to wait for big wins. Because when they win, they win big. To play such slots, you must be patient and budget appropriately. Having enough cash to bet is crucial.

It’s difficult to predict whether a game is a low or high volatility. Therefore you should always play for free first to determine the risks. Or, as we’ve already mentioned in our previous answers, checking a pay table is never a bad idea. If awarded prizes are significant in size, it’s most likely a high-volatility slot.

Do I have to play slots for real money?

No. Most slots casinos, including our recommended top slots sites in the UK, have instant-play games on offer. Playing in demo mode is a great way to see whether the games are as good as they tell you. Plus, most casinos will show you the best features because they want you to play for real money. And that means that before you spend money, you might get to see if any wilds, scatters, multipliers or bonus rounds are present. Best of luck.

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Terms and conditions: 18+. New players only. Valid for 15 days after 1st deposit. Min Deposit £20 Max Bonus Bet £5 Winnings from spins capped at £50 First 100 Zee spins 10/day. Full terms apply. BeGambleAware.org Full bonus terms.