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Best Online Slot Sites 2024

By Danielle Clark & others on Fact checked by Adam Dickinson
Ready to set the reels spinning? We’ve handpicked the best online casinos to play slots online. From the hottest new video slots to old cult classics, these top slot sites have games for everyone. All you need to do is compare, sign up and start playing!

Slots are always popular at online casino sites, but which operators truly excel when it comes to the reels? Here at Compare.bet, we’ve compiled a list of the best slots sites in the UK, making it easy for you to compare the best slots sites and sign up to your favourite.

UK Licensed UK Licensed
Expertly Reviewed Expertly Reviewed
Mobile Friendly Mobile Friendly
Fast Withdrawals Fast Withdrawals
Slot Site Score New Customer Offer Expert Review Secure Sign Up Link Slot Games iOS App Android App Live Games Payout Min. Withdrawal Max Withdrawal Terms
1. Winomania
100% Up to £100 + 100 Free Spins

Reviewed, rated & tested by our team

George Edwards Headshot
"Weekly cashback is available on this PayPal approved casino "
Play Slots
700
No
No
65+
97
10
New Customer Offer 1st deposit only with a minimum deposit of £10. max bet £2. max bonus £100. 40x wagering on free spins winnings. 30 day bonus expiry 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
Highly Trusted 2. All British Casino
79%
100% up to £100 + 10% cashback

Reviewed, rated & tested by our team

Liam Hoey Headshot
"Withdrawals are processed within 48 hours while a collection of well-thought out games makes All British Casino a great place to play"
Play Slots
1100
Yes
Yes
75+
99.5
20
5000
New Customer Offer #AD 100% up to £100 + 10% cashback. Maximum withdrawal on free spins of £100. Max £5 bet while playing with bonus funds, no maximum withdrawal. 35x wagering. Skrill and Neteller deposits don't qualify for this bonus. Click here for full T&Cs 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
3. Hyper Casino
Up to £100 Bonus

Reviewed, rated & tested by our team

George Edwards Headshot
"Enjoy 'Hyper Fridays' as part of the weekly rewards on this brilliant platform"
Play Slots
700
No
No
60
96.5
10
5000
New Customer Offer #AD New players only. Min deposit £10. Wagering 45x bonus., max bet £5 with bonus funds. Live casino play excluded with bonus. 100% up to £100 bonus on 1st deposit. Welcome bonus excluded for players depositing with skrill or neteller. No max cash out on deposit offers. Eligibility is restricted for suspected abuse. Click here for full T&Cs 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
4. Casushi
72%
100% Up To £50 + 50 Free Spins

Reviewed, rated & tested by our team

Liam Hoey Headshot
"The vividly-designed Casushi site makes playing the broad collection of games easy"
Play Slots
800+
No
No
14
97
New Customer Offer 100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Rich Wilde and the Book of Dead slot only. Min first deposit of £10. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply. 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
5. Voodoo Dreams
89%
100% Up To £50 + 50 Free Spins

Reviewed, rated & tested by our team

George Edwards Headshot
"Voodoo Dreams' Drops and Wins is back until March 2024, with a €/£ 2,000,000 monthly prize pool in the form of cash, multiplier, and Free Round Bonuses as prizes in players’ favourite video Slot games."
Play Slots
1500+
No
No
40+
96.5
20
20000
New Customer Offer 18+ new players only. Maximum £50 bonus. Minimum deposit: £20. Max bet with active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Winnings from Free Spins come as cash. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. www.begambleaware.org For full bonus terms and conditions, please read below. 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
6. Fun Casino
100% up to £123 + 10% Cashback

Reviewed & verified by our team

"Fun Casino is dedicated to delivering best-in-class customer experiences"
Play Slots
700
No
No
60
96
20
8000
WELCOME BONUS New players only - Maximum bonus is £123 - Max bet with bonus is £5 - No max cash out - Wagering is 50x - Skrill & Neteller excluded - Eligibility is restricted for suspected abuse - Cashback is cash, so no wagering - Cashback applies to deposit where no bonus is included. 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
7. Grosvenor
80%
Deposit £20, Play With £50

Reviewed, rated & tested by our team

Liam Hoey Headshot
"Excellent customer service and communication with the casino while withdrawals can be processed in just 24 hours"
Play Slots
600+
Yes
Yes
105+
96.1
5
15000
New Customer Offer Click here for full T&Cs.New customers only. Min deposit £20. Max non-withdrawable bonus £30. Playable on selected games only. 30x wagering required. Expires within 30 days. Max win £2,000. T&C apply. 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
8. Rialto Casino
82%
Up to £300 + 200 Free Spins

Reviewed, rated & tested by our team

Liam Hoey Headshot
"There are over 400 slots to choose from at Rialto Casino alongside withdrawals processed within 24 hours"
Play Slots
400+
No
No
35+
96
5
New Customer Offer Welcome bonus package on first 3 deposits 1st Dep. Min £20. 40x wagering (bonus & deposit). max bonus to cash 5x. 50 Free spins. 25x wagering. Max bonus to cash £25. Claim once. See full T&Cs for 2nd & 3rd Deposit offers: Full T&C apply. 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
9. Luckster
84%
100% up to £200 + 100 Spins

Reviewed, rated & tested by our team

George Edwards Headshot
"A brand new casino offering a good variety of slots and slingo games, including games exclusively designed for high rollers"
Play Slots
3000
No
No
140
96
10
5000
New Customer Offer Applies only to new depositing players. Minimum deposit £10. Wagering requirement x35. Offer valid for 24hr. Free spins included 3 deposits. 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
10. Spin Rio
83%
Up To £200 Bonus + 100 Free Spins

Reviewed, rated & tested by our team

Liam Hoey Headshot
"Smooth registration and deposit processes. Intuitive design and quick withdrawals."
Play Slots
800+
No
No
130+
97
10
New Customer Offer Terms and Conditions Apply. New Players only. 18+. Min First Deposit £10. Min Second and Third deposit: 20. Wagering requirement apply 35x. Offer valid for 72hr. Spins expire after 24hr. 100 spins includes 3 deposits. 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
+ Load 10 more online slot sites
🥇 Best Overall Score:
89%
🎁 Largest Bonus Offer:
£300
💰 Highest Deposit Match:
100%
💷 Minimum Deposit:
£10
Our Best Choice For Slots
Casushi
Casushi
Our score: 72%
100% Up To £50 + 50 Free Spins
New Customer Offer 100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Rich Wilde and the Book of Dead slot only. Min first deposit of £10. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply. 18+. Full T&Cs apply. Please gamble responsibly. GambleAware.org
Getting Started

How to Start Playing Slots Online

Pretty much every online casino site boasts a range of top slot games for players to enjoy. This means slots fans are spoilt for choice when it comes to picking the best site. You’ll need to be clued in on exactly what a site has to offer before you sign up to start playing. Luckily for you, Compare.bet has everything you need to know about playing slots online, from the very basics of how slots work, to claiming a bonus at online slot sites.

You can start playing online slots in just a few simple steps:

  1. Playing Slots Icon

    Compare slot sites

    You won’t be hard pressed to find an online casino with slots, but it’s not as simple as signing up to the first site. From sign up bonuses to banking options and the titles on offer, there are a few factors to consider. We’ve made this easy, sifting through the slot sites on the market to bring you a list of only the very best.
  2. PayPal Security

    Sign up & verify your account

    Settled on a slot site? Time to sign up. The link on our list will take you straight to the registration page where you can create your account. You’ll need to wait for the casino to verify your identity before you can play.
  3. compare gambling sites

    Deposit

    You’ll need to make a deposit to play real money games. Head to the cashier, select your deposit option and deposit amount and confirm. The very best slot sites offer instant deposits, so you can start playing in next to no time.
  4. Playing Slots Icon

    Play

    Now for the fun part! With the money in your casino wallet, you’re ready to play. Choose a game that suits your budget, make your bet and hit spin. Fingers crossed!

Reviews of our Favourite UK Slots Sites

Looking for the perfect place to play slots online? Check out the top online casinos below. Our expert reviewers have put these sites to the test to find out more about their features, perks, and any potential drawbacks, so you can find the online casino that suits you best. 

  • If there’s one thing I can say for sure about All British Casino, it’s that this casino stands out with its unique theme. The bonuses are pretty impressive too, with a 100% deposit bonus up to £100 for new players and 10% weekly cashback for loyal customers. There are also no disappointments when it comes to the selection of slots. I was able to explore a huge library of titles from top game providers such as Play’n GO and Novomatic, with top slots like Colt Lightning and Book of Ra readily available.

    pros icon Pros:
    • Great selection of slots from top providers
    • Easy to navigate slots via themed collections
    • Various trustworthy banking options available
    • Up to £100 bonus cash for new players
    • No max cash out on welcome bonus winnings
    • 10% cashback every week
    cons icon Cons:
    • £20 minimum deposit to claim sign-up offer
    • 35x wagering requirements on bonus amount
    • Neteller and Skrill excluded
  • Fun Casino is a popular pick among UK slots players, so I was excited to take the site for a spin. First impressions were good, with the colourful beach theme really helping to give the casino its own character. However, I didn’t find the sign-up offer quite so impressive: at 100% up to £123, it’s generous enough, but the 50x rollover demand on the bonus amount seems steep. On the plus side, Fun Casino lives up to its name with an incredible selection of entertaining online slots, including popular slots series such as Fluffy Favourites and Big Bass Bonanza.

    pros icon Pros:
    • Fun beach theme
    • Up to £123 bonus funds for new players
    • Great selection of slots, including popular series
    • Well-organised website is easy to explore
    • Wide variety of trusted payment options
    cons icon Cons:
    • Neteller and Skrill excluded from welcome offer
    • 50x wagering applies to bonus amount
  • My VoodooDreams casino review uncovered a magic-themed site that welcomes new players with a £50 bonus and 50 free spins on Book of Dead. At 60x the deposit and bonus, I did find the wagering quite harsh, but was pleased to see free spins winnings paid as cash. The loyalty scheme also hits the spot, requiring players to collect points to climb the ranks and unlock spells to earn cash and spins. There’s no shortage of ways to rack up points, thanks to a huge selection of slots, which includes classics like Fruit Shop and new titles like Money Cart 3. 

    pros icon Pros:
    • Fun magic-themed loyalty scheme
    • £50 bonus and 50 free spins for new players
    • Great selection of online slots, including classics and modern titles
    • Free spins winnings paid as cash
    cons icon Cons:
    • 60x wagering requirement applies to sum of deposit and bonus
    • Some players may not like the dark website design
  • Grosvenor Casino is a big hit on the high street, so I was keen to see if the casino lived up to the hype online. The website design made a good first impression, with all the different sections of the site clearly laid out. Signing up and claiming the welcome bonus was really simple, and I was able to enjoy the casino’s incredible selection of slots in no time. Like the site itself, the slots page is well-organised with collections such as Drops & Wins and Megaways titles. Exclusive slots like Chilli Con Cash and Gems Gone Wild helped earn Grosvenor extra brownie points. 

    pros icon Pros:
    • Trusted high street brand
    • £30 bonus cash for new players
    • Well-organised website is easy to navigate
    • Great variety of online slots, including exclusives
    cons icon Cons:
    • £30 minimum deposit to claim welcome bonus
    • 30x playthrough requirement on deposit and bonus
  • Luckster online casino stands out in more ways than one. Having been immediately impressed by the fresh design of the site, I also found opening a new account a breeze, and I was able to claim a 100% up to £50 bonus and 100 free spins on my first deposit. Spins are paid out at 20 a day on five top slots, including Starburst, Finn and the Swirly Spin, Book of Dead, VIP Black, and Aloha! Cluster Pays. Upon exploring the site, I appreciated the option to search for games by developer, but would have liked to see more themed collections. 

    pros icon Pros:
    • 100 free spins and up to £50 first deposit bonus
    • Additional bonuses available on second and third deposits
    • Attractive website with polished Irish theme
    • Explore titles by game developer
    • Excellent choice of online slot games
    • Lots of different payment options available
    cons icon Cons:
    • 35x wagering applies to bonus amounts and free spins winnings
    • Themed collections could improve ease of navigating site
    • Payout times could be quicker
  • After setting out to discover if Rialto makes the cut as one of the UK’s best online slot sites, I’m pleased to say it’s earned its spot. I was pretty happy with my first deposit bonus of 100% up to £100 and 50 free spins on Fishin’ Frenzy Megaways. Plus, I could also claim additional 50% deposit bonuses and 75 free spins on my second and third deposits. Along with a generous welcome bonus, Rialto also earns its stripes with a collection of over 400 slots that’s sure to impress any online casino player. Its library of Novomatic slots is particularly good. 

    pros icon Pros:
    • Up to £200 bonus and 200 free spins for new players
    • Slick website design with curated slots collections
    • Over 400 online slots to choose from
    • Earn loyalty points as you play
    • Deposit at the Rialto London casino for an online bonus
    cons icon Cons:
    • 40x wagering on deposit and bonus
    • 25x wagering on free spins
    • Mobile app only available for Android
  • One of the best slots sites for players looking for an enthralling theme to complement their reel spinning, Hyper Casino uses an intergalactic aesthetic to great effect. I’m a big fan of the straightforward layout, with an easy-to-use manual search function and software developer filters that make the collection of over 1,000 titles easy to navigate. The operator could perhaps do with a few more casino slots filters for things like Megaways games, but the dedicated sections for jackpot games and tournament slots will cater to most preferences. Elsewhere, Hyper Casino grants new customers a 100% up to £100 welcome casino bonus with a 45x wagering requirement, which, though steep, is around the industry average. 

    pros icon Pros:
    • Dynamic space theme
    • Straightforward layout
    • Comprehensive slots tournaments
    • Weekly “Hyper Fridays” bonuses
    • Integrated sportsbook
    cons icon Cons:
    • No NetEnt slots
    • Not many ongoing promotions compared to competitors
  • I was a huge fan of the Casushi platform right from the offset. This is undeniably one of the most colourful and visually appealing slot sites I’ve come across, employing a Japanese-inspired theme packed with neon flavours. New customers can enjoy a 100% up to £50 casino bonus with 50 free spins on Book of Dead. Reading through the full terms and conditions uncovers a 40x wagering requirement, better than many competitors but still a significant obstacle for players looking to claim any actual winnings. However, Casushi has a consistent selection of brand-new slots that I’ve seldom seen elsewhere. Some of the most exciting examples include Rocket Blast Megaways and Majestic White Rhino. Otherwise, I was very impressed by the number of live dealer/slot hybrids like Extra Chili Epic Spins Live. 

    pros icon Pros:
    • Generous welcome bonus mixing bonus funds with free spins
    • Fun and exciting theme
    • Very up-to-date slots catalogue
    • Interesting live dealer/slot hybrids
    • Well-designed loyalty programme
    cons icon Cons:
    • Could do with a few more slot search filters
    • Slightly limited payment methods
  • Spin Rio is one of the best slot sites to come out of the last few years, launched in 2020 by the Marketplay Group. The new customer casino bonus is one of the most generous I’ve seen, with a 100% up to £200 deposit offer up for grabs along with 100 free spins. The 35x wagering requirement is also slightly lower than the average — another big selling point. I enjoyed the healthy range of online slots available, but my other main highlight was the versatile payment options, including rarer methods like MuchBetter. 

    pros icon Pros:
    • Very versatile banking options
    • One of the most generous welcome bonuses
    • Instant withdrawal support
    • Several ongoing promo offers
    • Comprehensive casino slots catalogue
    cons icon Cons:
    • Slightly pixelated visuals
    • No mobile app
  • Duelz is one of the best slot sites for enthusiasts looking for something a little different. I was immediately struck by the site’s innovative core concept, which allows players to engage in competitive slots battles. Slot sites often lack a social aspect, and this is a great way of injecting a sense of community. Elsewhere, I loved the Duelz array of ongoing promotions and other exciting incentives. For example, I enjoyed daily treasure chest bonuses, daily free spins, 10% cashback on weekly losses, and various other promo offers. While the casino slots library is slightly smaller than some other sites, the team uses handy filters like “Megaways”, “Cash Blast” and “Jackpot”, and clearly values quality over quantity. Top marks! 

    pros icon Pros:
    • Fun and exciting slots battle concept
    • Nice visual aesthetic and soundtrack
    • Comprehensive ongoing casino bonus offers
    • Versatile payment methods, including rapid transfer
    • Helpful slot filters
    cons icon Cons:
    • Lacking a mobile app
    • Slots library is smaller than other sites
RNG Slots

RNG Slots

Unlike other casino games, such as blackjack and poker, playing slots online involves little skill. Luck alone determines whether or not you’ll hit a winning symbol combination when the reels stop spinning. Whichever symbols appear on the reals are determined by a random number generator (RNG), ensuring that the outcome of every spin is random and, as a result, fair. Under the Licensing Conditions and Codes of Practices set by the UK Gambling Commission (UKGC), every UK-licensed casino must use this technology on all games.

This RNG technology determines which symbol will show on each reel at the end of the spin. The outcome of every spin is separate from the previous and next spin, which means you’re never ‘due’ a win. Likewise, if a slot has just paid out the jackpot prize, there’s no saying it won’t pay out again on the next spin.

How Online Slots Work

How Online Slots Work

It’s pretty simple to learn how to play slots at an online casino which is why these titles are always so popular – just set your bet, hit the spin button and wait to see if you get lucky. Even if you’re playing one of the latest video slots with multiple paylines and bonus features, the basic premise is the same. Sure, you might need to set your coin size and select the number of paylines you want to bet on, but that’s pretty straight forward too.

The more paylines you bet on, the more ground you cover. Just remember that your bet will multiply by the number of paylines you bet on, increasing your overall wager for that spin.

If you do land a combination of winning symbols, you’ll know about it. Music will play and images will appear on the screen to let you know that you’ve struck lucky. You’ll then have the option to use your winnings to play again or to keep them in your casino wallet. 

  1. Check icon
    Set your bet and select your paylines
  2. Icon
    Hit spin
  3. Slot Icon
    See if you land
Our Criteria

How We Review Online Slots Sites

When we review online slots sites, we do so with slots players like you in mind. We take a look at everything from banking to bonuses to find the best slots sites to recommend to UK players. Here’s what’s on our hit list: 

Licensing

A current gambling licence from a reputable licensing body confirms that a slots site is a safe and fair place to play, and also that the site undergoes regular audits by third-party testing companies like eCOGRA. Here at Compare.bet, all our recommended slots sites for UK players are licensed by the UK Gambling Commission.

Welcome Bonus

Whether it’s a bundle of free spins, bonus funds or both, we love to see slots sites roll out the red carpet for new players with a great welcome offer. Our reviews take a deep dive into slot site sign-up deals to check which terms apply, highlighting restrictions such as wagering requirements and winning caps, and showing you where to find the best slots site offers. 

Choice of Games

When we undertake slots site reviews, we always hit up the game tab to see what’s in store for players. The best slots sites complement a selection of many hundreds or thousands of real money online slots with classic table games like blackjack and roulette, and many offer live dealer games too. 

Payment Methods

We think it’s important that slots sites offer a range of trusted payment methods, so our reviews always include a look at the cashier page. We expect to see options such as debit cards, Trustly and Paysafecard, as well as e-wallets like PayPal, Neteller and Skrill. Our reviews also cover deposit and withdrawal time frames, along with details of any fees. 

Customer Support

Great customer support is a must for any business, and online slots sites are no exception. When we review new slots sites, we examine what’s available in terms of help for players. At the best slots sites, a comprehensive FAQs section is backed up by a variety of ways to get in touch with the team. This might include live chat, along with email and phone support. 

Site Design

We spend time getting to grips with a slot site’s design and usability. We’re not interested in dreary sites that make it difficult to get to where you want to go. At Compare.bet, you’ll find fast-loading sites with fresh designs and straightforward navigation. 

Mobile Compatibility 

Playing slots on your mobile is great fun and also convenient, so we include detailed info about mobile compatibility in our slots sites reviews. Most sites have a mobile version of their main desktop site, but the best slots sites also offer native mobile apps. These apps come with perks like improved security and bonus code notifications, and are often available for Android and iOS mobile devices and tablets.

Variation of Slots Titles

We assess the diversity of slots offered at each site, ensuring that players have a wide selection of engaging and high-quality games to choose from — this includes evaluating the themes, genres and underlying mechanics of the slots available. The best online slot sites will offer a varied collection, with slots themed around ancient civilisations, mythology, crime, animals, food, and much more besides. 

How to Find the Best Slot Site

If you’re a slots fan, there are plenty of sites on offer and it's easy to pick one — just follow the steps below.

Green Female Checklist STEP 1
UKGC Licence
All our recommended slot sites are licensed by the UKGC, meaning games are regularly tested for fairness and player data is protected.
Purple Slots Machine STEP 2
Review Range of Games
Some of the slot sites offer several thousands of games across every theme imaginable. Checking which developers are featured on the site is an easy way to get an idea of available games at a glance.
Red Man Magnifying Glass STEP 3
Review Slot RTPs
If you’re looking for the best payouts, you’ll want to find slots with the best RTPs. For any player, we recommend titles with an RTP of at least 96%.
Yellow Checklist Bonus STEP 4
Sign Up & Claim
If the slot site is ticking your boxes, sign up with your details and claim a welcome bonus — it’s a great way to familiarise yourself with how the site and its games work.
Slot Games

Slots You Can Play Online

Online slots might be simple, but there’s still plenty of variety when it comes to the games on offer. Whether you’re a fan of traditional fruit-machine style slot games, or prefer all-singing, all-dancing progressive jackpot slot games, the best online slot sites have something for everyone.

Classic Slots

These slots hearken back to the days of fruit machines, though the symbols aren’t necessarily fruit, bells and lucky 7s. Most classic slot games have three or five reels, making it pretty easy to select your paylines, which are almost always in one direction. This simplicity makes them a popular choice among slots newbies.

  • Mega Joker – Released in 2013, NetEnt’s Mega Joker is a 5-reel, 3-row slot with high volatility and an RTP of 99%. The slot is designed to look like a traditional fruity and offers a max win of 2,000x the stake. 
  • Cleopatra – Featuring a 95.02% RTP and a max win of 10,000x your bet, IGT’s Ancient Egypt-themed Cleopatra slot features a thrilling bonus game with up to 180 free spins available to lucky players. 
  • Double Diamond – Packed with cherries, bars and lucky 7s, Double Diamond is about as simple as it gets. This 3-reel slot features a single payline, an RTP of 95.44% and a jackpot prize of 1,000x the line bet. 

Mega Joker is one popular classic slot, with an appearance akin to a real fruit machine.

Video Slots

Video slots tend to have more going on that classic slot games. Expect crazy themes, tailor-made soundtracks and graphics that could give some video games a run for their money. These games offer players multiple ways to win, with some titles offering over 1,000 paylines in every direction you could imagine. Video slots also tend to have more bonus rounds and in-game free spins than classic slots. Video slots are perfect for players looking to combine their love of online casino with their favourite films, TV shows and music genres, with software developers such as NetEnt and Playtech partnering with big production companies to create branded video slots.

  • Starburst – An iconic online slot released in 2012, Starburst is a 5-reel, 3-row slot with 10 paylines and an RTP of 96.09%. This galaxy-themed online slot game features dazzling wilds, respins, a win both ways feature, and a max prize of 50,000 coins.
  • Book of Dead – A 2016 release by Play’n GO, Rich Wilde and the Book of Dead is a 5-reel, 10-payline slot with a 96.21% RTP. This Egyptian-themed slot pays out a top jackpot of 5,000x the line bet. Land 5x Rich Wilde symbols to make it yours. 
  • Gonzo’s Quest – Launched in 2011, Gonzo’s Quest is a 5-reel, 3-row slot from NetEnt. Set in a lush rainforest, the game features 95.97% RTP, 20 paylines, avalanche reels and a max win of 2,500x the bet. 

NetEnt’s Starburst is arguably the most popular video slot of all time, owing to its simple gameplay and inclusion in free spins offers.

Penny Slots

You don’t need to be a high roller to play online slot games, thanks to penny slots. You can bet as little as 1p per spin on these titles, which is great if you want to play real money slot games but have a limited budget. But that’s not to say that penny slots are a budget option, you’ll still get high-quality graphics, top-notch soundtracks and the chance to win big.

  • Double Tigers – Set in Ancient China, Double Tigers is a 2018 release from Wazdan. This animal-themed penny slot is packed with great features, including adjustable volatility levels and a max win of 40x the bet. 
  • Pirate’s Charm – Launched in 2018, Pirate’s Charm is a 5-reel, 3-row slot with 243 paylines and 96.49% RTP. This Quickspin slot offers players a swashbuckling adventure packed with mystery charms, respins, and a top payout of 1,215x the bet.
  • Disco Bar 7s – Another 2018 release, Booming Games’ Disco Bar 7s is a disco-themed slot with 3 reels and 10 paylines. A low volatility game with 95.96% RTP, this slot offers scatter pays, a mix ‘n’ match feature, and a jackpot of 10,000x the bet.

Progressive Jackpot Slots

This is where real slots enthusiasts get excited. Whereas most slot games have a fixed prize for winners, the prizes for progressive jackpot slot games just keep growing! However, even progressive games come in different shapes and sizes. Whereas some jackpots are specific to the online casino at which you’re playing, others are pooled between different casinos sites. Whatever the nature of the progressive jackpot, the size of the prize pool increases as players wager. These jackpots have been known to hit the hundreds of thousands, with titles such as Mega Moolah and Mega Fortune making players millionaires!

  • Mega Moolah – A safari-themed slot released in 2006 by Microgaming, Mega Moolah is a medium volatility 5×3 slot with 25 paylines and 88.12% RTP. This slot offers a max win of 15,000 coins in the base game and four progressive jackpots, the largest of which seeds at £2 million.
  • Beach Life – A 2006 release from Playtech, Beach Life is a sunny slot with 5 reels, 20 paylines, and an RTP of 93.25%. Featuring scatter symbols and an exciting bonus game, Beach Life pays out the jackpot for a max bet for landing 5 wilds on the 20th winning line. 
  • Arabian Nights – NetEnt’s Arabian Nights slot launched in 2013. The game features 5 reels, 10 paylines, and up to 95.62% RTP. The game packs in an exciting free spins bonus round alongside its progressive jackpot prize.

Mega Moolah regularly pays out jackpots into the millions of pounds to the luckiest players.

You may need to bet the maximum coin size to be in with a chance of hitting the top jackpot prize.

In our January 2021 interview with award-winning game studio Blueprint Gaming, Jo Purvis, Director of Marketing and Relationships, spoke to us about Blueprint’s Jackpot King progressive jackpot series and why the genre is so popular.

“There’s a large segment of players that absolutely love the possibility of winning huge amounts of money from any spin. For them, it enhances the gaming experience and adds something extra to the gameplay. Jackpot King is so successful because players have the opportunity of winning some amazing prizes, but they also get to play quality games at the same time. It simply makes for an entertaining experience, and those fortunate enough to reach the Wheel King are always on the edge of their seat in anticipation of what awaits.”

Features

Features of Online Slots

Today’s slots players can forget about the nudge and hold features of traditional one-armed bandits. Modern online slots leave retro fruities in the dust with oodles of exciting features that make gameplay more thrilling and can boost your wins too. Let’s look at some of the common components of online slot machines. 

Reels 

Spinning reels are the bedrock of online slots, affecting both gameplay and the number of ways to win. Classic slots like Couch Potato usually have three reels, while modern video slots such as Book of Dead have five. For modern titles, however, new game mechanics mean that many more reels can be in play; Jammin’ Jars, for example, has eight. Some developers also tinker with how reels work, with avalanche reels offering the perfect example — this feature sees symbols that form part of a winning combination payout before disappearing from the payline, allowing new symbols to tumble down, and potentially, new winning combinations to form.

Paylines

Paylines are lines on slot games which pay out if certain symbol combinations appear on them. Traditional slots have one left-to-right payline, while modern video slots often feature between five and 100, and sometimes more, running horizontally, vertically, diagonally, or in zigzag patterns. Paylines have evolved further, with slots like Crazy Chameleon and Starburst offering Win Both Ways, allowing left-to-right and right-to-left wins. Megaways slots like 88 Fortunes and Bonanza Megaways modify reels to create thousands of ways to win, while Cluster Pays slots like Astro Legends and Honey Rush pay based on clusters of five or more matching symbols.

Symbols

The huge variety of slot themes means that symbols can be depicted as anything from Irish leprechauns to Egyptian treasures. Many games also feature wilds, which substitute for other symbols to help you form winning combos. Wilds come in a range of styles, such as sticky wilds, expanding wilds, and multiplier wilds, which act as their names suggest. Wilds might be depicted as a logo, as a game character, or as something else, but all boost the chance of a payout. Scatters work a little differently: landing three or more scatters anywhere on the reels typically triggers a bonus round.

Bonus Rounds

Increasing the odds of landing a big win, bonus rounds are often the most exciting part of slot games. Many bonus rounds are triggered by landing a certain number of scatter symbols, but this does vary, so remember to check the paytable before playing. Some games, such as Net Gains, include a feature that allows players to buy into a bonus round using cash. The style of bonus rounds varies, with some games requiring players to pick between three or more items such as chests or wishing wells to reveal their prize. Others include multipliers to increase the final payout.

Mobile Slots

Mobile UK Slots Sites

With so many players choosing their mobile for online gambling, slots developers often create games with mobile players at the top of the priority list. This means there’s plenty of choice when it comes to mobile slot games. If the title has been built with HTML5, it’ll function identically across any device and operating system, whether you’re playing on desktop, mobile, or tablet. Furthermore, some of the best new slot games have been created especially for play on a smaller touch screen. Not only does this mean you can benefit from improved usability, but high-definition graphics too.

Mobile Slots Apps

Every slot site on our list has a mobile-friendly website, but the best offer native mobile casino apps for Android and iOS, which makes playing mobile slot games a breeze. Once you’ve downloaded the app, you’ll be able to sign into your casino account, ready to move from your home screen to your favourite title in just a couple of taps. Below, you’ll find a roundup of some of the other benefits of mobile casino apps, and a quick look at some of their drawbacks too. 

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Pros:

  • Locally stored data offers quicker loading times and smoother gameplay
  • Real money slots and casino games available to play 24/7
  • May offer app-exclusive slots bonuses and promotions
  • Optional push notifications to alert you of new bonus opportunities
  • New UK slots apps coming online all the time, providing players with plenty of choice
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Cons:

  • Requires storage space on your mobile device
  • Sometimes only available for Android or iOS, but not both
  • Readily available on players’ devices, so may encourage excessive play
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Other Games

Other Games at UK Slot Sites

When you’re looking to vary it up a bit, the best UK slot providers also offer their customers a range of other games to try out. This can include table games such as blackjack, roulette and poker, in addition to a selection of live casino games. But which is best for you? Let’s break down the choices and find out.

Blackjack gameplay desktop view

Table Games 

Table games are probably the games most people think of when they hear the word ‘casino’ and include the familiar favourites of baccarat, roulette, craps and blackjack sites. Baccarat and blackjack are classic card-based table games with very simple rules. Craps and roulette have more complex betting options, but you can get a handle on them fairly quickly. 

Blackjack
Woman in black dress makes announcements during a Lightning Roulette Game

Live Casino

Live casino games add a real spark of magic by bringing another element into your game play, streaming from studios across the world. This means you can play games with a top class live dealer from the comfort of your own home. Typically, live casinos offer the classic games you would typically find in a land-based casino. However, the content range is always growing, and has been taking inspiration from popular game shows such as Deal or No Deal. Something to be mindful of when choosing your live casino game is that while these titles are enjoyably immersive, they can sometimes require a higher minimum wager. 

Live Casino
Poker hands full house three queens and two kings

Poker

Poker is an iconic casino game that has developed over time to adapt to current themes and gaming trends. Typically one of the best parts of poker is watching the people around you for a tell-tale reaction, and while this may not be possible with online poker, the live dealer version provides the atmosphere of a real casino through your laptop, phone or tablet. There are many variants of online poker, including the most widely recognised Texas Hold’em, Omaha, and Seven Card Stud. Though each follows different rules, all have the aim of creating a strong hand to win the game.

Poker
Slots Bonuses

Claim Your Bonus for Online Slots

The best online slot sites reward players for choosing their site. A welcome bonus is the most common offer, but there are also other slots bonuses up for grabs through other promotions, such as happy hours and VIP rewards. You can get your hands on these bonuses at the top slot sites:

Free Spins

Free spins are the ultimate bonus for online slot players. This bonus is as simple as it sounds: you can play real money slots with no need to dip into your own wallet. Free spins are almost always targeted at selected games, though some offers allow players to choose from a range of titles from the same developer. Time limits often apply, with most sites allowing 24–72 hours to use free spins and between three and 30 days to complete any wagering requirements. Not all free spins winnings come with rollover demands, but, where they do, 35x is about average.

Best Free Spins Bonus
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No Deposit Free Spins

You don’t even need to make a deposit to claim a free spins no deposit bonus. Simply sign up, verify your account and opt-in. Once the free spins are credited to your account, you’ll be in with a chance of winning real money on slots, without spending a penny of your own.

Matched Deposit

Matched deposit bonuses are one of the most common casino offers. You’ll receive a percentage of your first deposit as free casino credit. Percentage matched will vary between online casinos, ranging from 25% to as much as 200%, though there’s almost always a limit to how much credit you can actually claim. These bonuses are ideal if you’re interested in other casino games, besides slots. Of course, you can play slots with this credit, but you can also use it on the likes of online roulette and blackjack games.

Some online casinos spread the matched deposit bonus across your first two or three payments rather than in one lump-sum.

Best Matched Deposit Bonus
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No Deposit Casino Credit

These bonuses work in a similar way to matched deposit deals, but you won’t need to dip your hand into your own pocket first. Much like no deposit free spins, you have a chance to win real cash even though you’re playing for free. No deposit bonuses are usually more modest than matched deposit deals— usually £5 free no deposit at most— but you can play a whole host of casino games, including online slots, with your rewards.

Bonus Terms and Conditions

There will be terms and conditions attached to whichever online slots bonus you choose and you’ll need to factor these in when comparing bonuses. Wagering conditions apply to pretty much every offer bar no wagering bonuses, and you can’t withdraw any bonus winnings until you complete these.

On top of wagering requirements, there are also other terms to consider. Some slots bonuses may only be used for selected titles, such as the newest games. Sites may also restrict how much you can win with your bonus, how long you have to complete any wagering requirements and how much you can withdraw at once.

Here are a few of the most common T&Cs to be aware of:

  • Wagering requirements – you’ll need to meet these to withdraw the bonus and any resulting winnings
  • Time limits – bonuses expire after a given period so make sure you use them before they run out
  • Game restrictions – most free spins offers will be for a specific slot game, while matched deposits can be used on a wider choice
  • Payment exclusions – if your offer requires a deposit to claim it, make sure you use an eligible payment method; e-wallet deposits will often disqualify you from receiving a bonus
  • Winnings caps – there may be a maximum amount of money you can win from a bonus
Slots Promotions

Offers for Existing Customers

While the most generous offers are reserved for new customers and first-time depositors, the best online slots sites provide plenty to reward returning customers. You’ll often find free daily spins, cash giveaways, free spins promotions that coincide with holidays or the release of a new game, lucrative slots tournaments, and loyalty programmes. 

Loyalty Programmes

The best slot sites offer loyalty programmes that allow players to collect points to swap for rewards. It’s generally simple enough to earn loyalty points at online slot sites, with most schemes handing them out every time a player places a real money bet on slots or casino games. When it comes to the loyalty rewards, these can vary between different slots sites. One of the most common treats is a bundle of free spins for a popular online slot like Starburst or Book of Dead, but some sites also offer players the chance to exchange loyalty points for cash. 

Slots Tournaments

Slots tournaments don’t actually cost extra for entry. It’s simply a promotion that adds the element of competition to a game designed for solo play. Each online slot site will have different rules, formats, and prizes but a typical tournament format will see any winnings on slot games in a predetermined period of time converted into a point score for a leaderboard. When the event ends, the top-ranked players will win a prize in the form of bonus cash, real money, player points or — in some instances — some sort of exclusive gift. 

Playtech is just one of the software providers that give slots players an opportunity to compete against each other for prizes. The developer partnered with Buzz Bingo to launch slot tournaments. In the partnership announcement, Playtech Casino Director, James Frendo, said:

“Tournaments offer a whole new way to engage players, as well as add an extra level of enjoyment for players at no extra cost to themselves. Also, because points are awarded based on the size of the win in proportion to the bet, players who prefer to stick to lower stakes are not disadvantaged, encouraging them to stay within their limits.”

Slots

Online slots are the most popular online casino games in the UK, attracting more players than roulette, blackjack or any other game type.

Banking

Best Online Slots Sites Payments Methods

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Debit Cards

Visa and Mastercard debit cards are the most popular choice for banking at UK slots sites, offering a familiar and convenient way to deposit and withdraw funds. Deposits are instant and often qualify for bonuses. However, withdrawal times can be lengthy if the Visa Fast Funds service is not available. Sharing card details with the online casino is also required.

Paypal casino logo
PayPal

PayPal, a popular e-wallet, is widely available at the top UK slot sites. It allows deposits and withdrawals using your email address, ensuring the security of your sensitive financial information. Various funding sources can be used for PayPal account top-ups. PayPal supports instant deposits and fast withdrawals too, depending on the casino, but may not always be eligible for bonuses.

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Skrill

Skrill is an alternative e-wallet option available on many slot sites. Similar to PayPal, it enables instant transactions using your email address. However, qualifying for bonuses with Skrill is less common. On a positive note, Skrill also offers a physical prepaid Mastercard, increasing the convenience of the service for online casino players.

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Neteller

Neteller, along with PayPal and Skrill, is one of the most commonly used e-wallets at online slots sites for UK players. It offers great functionality, ensuring instant deposits, fast payouts, and secure personal information. Neteller also provides a physical prepaid Mastercard, known as the Net+ card. However, like Skrill, it is often excluded from bonuses on slots sites.

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Paysafecard

Paysafecard is a prepaid voucher available to buy in different denominations from various physical stores. Each voucher has a unique code that you enter on the slots site's cashier page to transfer funds. Paysafecard deposits are instant and often qualify for bonuses. However, there are transaction limits, and payouts are only available to a My Paysafecard account, a service rarely offered at gambling sites.

Trustly Logo
Trustly

Trustly takes advantage of open banking technology to facilitate direct transfers between your bank and your slot site’s account. It works with major UK banks and doesn’t require users to share any sensitive banking details. Trustly offers instant deposits, fast withdrawals, and excellent bonus eligibility. Availability may vary, but alternative options will be offered at online slot sites.

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AstroPay

AstroPay provides a secure and convenient way to deposit funds into your casino account, allowing you to purchase prepaid virtual cards in various denominations. These virtual cards eliminate the need to share sensitive financial information with the slots site. Deposits made with AstroPay are instant and often qualify for bonuses, with many gaming sites also offering quick payouts.

MuchBetter Logo
MuchBetter

MuchBetter is a trailblazing new e-wallet rapidly gaining popularity at slot sites for its streamlined, mobile-centric design. The platform was one of the first to introduce dynamic CVV codes, greatly improving security when transferring funds online. Users also enjoy two-factor authentication, biometric security support, and advanced SSL encryption. One of the only current drawbacks is its reduced availability and common exclusion from deposit offers.

Payz

Formerly known as ecoPayz, Payz is an interesting amalgamation of an e-wallet and a prepaid card. The payment provider has introduced numerous features over the past few years, establishing itself as a considerable rival to other e-wallets like Skrill and Neteller. Users enjoy free MasterCard integration, minimal fees, and regular cashback opportunities. Unfortunately, Payz is often ineligible for deposit offers, so watch out for this.

PvP Features

Player vs Player Features at Slot Sites

Some sites might offer player vs player features to add an extra layer of excitement, where you’ll compete against real people for the biggest wins. Voodoo Dreams and Duelz are two examples. In both cases, you’ll be paired up with an opponent when you play slots at the site, casting spells and dealing damage every time you win. Knock your enemy down and you’ll net bonus points and experience which can be used to unlock rewards including free spins and bonus credit. It’s a bit like a loyalty scheme — the more you play, the more you’ll benefit. Each site has their own take, so it’s important to check the FAQs so you know how to take part. 

Slot Tournaments

Slot tournaments are another PvP feature, although you’re not directly facing off against anyone. Rather, all players are competing to top the leaderboard for the most wins or the biggest win relative to the stake in a specific game. Place in the upper ranks when the time runs out and you could walk away with a cash prize. 

Tournaments are often hosted by games developers, which means that you won’t be up against players on the same slot site. Instead, you’ll play against players from lots of different sites. One tourney that’s popular with players is Pragmatic Play’s Drops & Wins, which offers random cash drops and huge weekly prizes.

Slots Tournaments Pros and Cons

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Pros

  • Offers a different and exciting new way to play real money slots online
  • Free to enter, just place your bet on the slot game as usual
  • Chance to earn great prizes, sometimes including cash drops
  • Offers players an opportunity to discover new online slot games
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Cons

  • Huge number of participating players reduces the chance of winning
  • Minimum bet of 50p often applies
  • Likely to be for specific games, and not necessarily your favourites
Free Slot Games

Play Slots Online Without Spending a Penny

You don’t need to spend a penny to play online slots. Pretty much every slot game, with the exception of progressive jackpot titles, are available in free play mode. Free online slot games are ideal if you simply want to play slots for fun or try out a new slot game before you put real money on the line.

It was announced that from the 7th May 2019, free-to-play casino games are subject to the Gambling Commission’s new age verification rules. This means even if you’re playing demo games, you’ll need to create an account and verify your age. This is designed to protect under 18s from accessing casino-style games, a move that we of course fully support.

Of course, you can’t win real money when you play free slots, but you do get to sample all the same bonus features as real money games. Whether your title features expanding reels, walking wild symbols and scatter symbols, you get to see what all the fuss is about without dipping into your own wallet.

New Slots

Try Out the Freshest Online Slot Sites

The great thing about online slot games is that there are always new titles popping up. There’s plenty to keep online slots players entertained as multiple brand new slot games are released each month. With each new release, online slots developers wow players, be that with bigger brand partnerships, higher definition graphics or bigger progressive jackpots.

Head over to our New Slots page to find out more about the latest slot games and casinos to play at.

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High RTP Slots

Understanding High RTP Slots

It’s important to understand the return to player (RTP) percentage of a slot game before you start playing, as this gives you an idea of how much you could theoretically win. These percentages are calculated over an infinite number of spins, which means you could win more or less than this percentage of wagers during your period of play.

When it comes to RTP, the closer to 100% the better. Most online slot games have an RTP of around 90% and those over 96% RTP are generally considered high payout slots. However, some of the highest paying slots offer even higher payout percentages.

Slot Game Return to Player (RTP)
Mega Joker
99%
Jackpot 6000
98.86%
Blood Suckers
98%
Starmania
97.87%
Jackhammer II
97.1%

What is Volatility?

A level of volatility is placed on slot games as an indicator of risk, with the rankings of high, medium and low correlating to the amount you can expect to win. For example, a low volatility slot game is likely to offer regular wins but usually of smaller amounts. A high volatility slot might see bigger winners but achieved less frequently. Overall, high volatility equals higher risk and low volatility equals a lower risk. 

Because of the level of risk involved, it’s advised that you take your own personal bankroll into account when choosing between a high or low volatility slot. If your budget is smaller then you may want to stay with the lower level volatility games. You’ll find that before you start playing, the best UK slot providers will declare a game’s volatility so you can be sure it’s the right one for you.

Software Developers

Best Slots by Software Developer

It was over two decades ago that we saw the first online slot casino. Ever since then, the number of UK slot sites has expanded, boasting a vast array of exciting and often elaborate games. Over the last few years, developers have really brought their A-game to aspects such as design, entertainment, and ease of use. With this in mind, here’s a breakdown of some of the slot providers whose wares you’ll find at the best slot sites, along with an overview of the top titles they offer to UK players.

Best NetEnt Slots

Gonzo’s Quest is one of the best-known NetEnt slots, and the titular conquistador has since become the mascot of the company.

Established in Sweden in 1996 as one of the first online gambling companies, NetEnt has grown internationally to become a top iGaming provider. The company prides itself on popular innovative games and cutting edge platforms, with its repertoire including popular slots and video slots, as well as classic table games such as roulette and blackjack. One unique feature of NetEnt is its avalanche mechanic, developed back in 2010. Activated when you hit a winning combination, the mechanic makes the matched symbols disappear, with cascading symbols filling their place to potentially create new combinations and lead to more winnings. Be sure to try some of the following titles:

  • Gonzo’s Quest  – Displaying beautiful graphics, this game is based around the charismatic Gonzo, a Spanish explorer who is looking for the lost golden city of El Dorado. Offering a medium-high volatility and an RTP of 95.97%, Gonzo’s Quest was the first slot to feature NetEnt’s avalanche mechanic feature.
  • Starburst First released in 2012, this highly popular and iconic slot has five reels and three rows with ten paylines. Starburst offers a low volatility and a 96.09% RTP.
  • Silverback Gold – One of the latest games to come from NetEnt, Silverback Gold has a high volatility and an RTP of 96.11%. This game is jungle-themed and involves high and low value jungle animal symbols, free spins, and the gradual collection of tokens that transfer low value symbols into high value. 

Best Microgaming Slots

Game of Thrones is one of Microgaming’s many branded slots.

Based on the Isle of Man, Microgaming was founded in 1994. It stands as one of the first online casino platform providers and creators of online casino software. Specialising in slots and boasting some of the top jackpot games around, Microgaming’s titles are available at many of the best slot sites in the UK. There are over 2,500 games integrated into its platform, so this slot provider has something for every taste. Here’s a few of our favourites:

  • Mega MoolahFirst released in 2006 and holder of the world record for the highest slot payout, this game offers 5 reels and 25 paylines. It’s safari-themed with comical animals spinning along each reel. Great for playing on mobile, it holds an impressive RTP of 97%.
  • Game of Thrones 243 – Including 5 reels and 3 rows, its name points to the fact there are 243 ways to win. This is an exciting game based on the popular TV show with the highest paying symbols based on the main characters.
  • The Vault – Offering 96% RTP, a high volatility and x5000 win potential, this game is ideal for gamblers who enjoy an exciting gaming experience with dynamic graphics.

Best Play’n GO Slots 

Book of Dead is frequently featured in free spins offers and is the second title in the Rich Wilde series.

Since its launch as an independent company in 2005 in Sweden, Play’n GO now has a presence at online casinos in over 25 jurisdictions internationally. Known for its state-of-the-art visuals, creative features and unique, fun game design, it caters to every player’s needs with a slot portfolio of varying volatility ranges. All games are optimised for smartphone and tablet use, meaning they are easily accessible on the go via iOS and Android devices.

Play’n GO works with a strong sense of community, holding customer safety at the heart of its work. The company even has plans to be climate neutral by 2025 and net zero by 2030. Try some of these best Play’n GO slots:

  • Book of Dead – With a maximum win potential of x5000, this flagship game offers 5 reels and 10 paylines. It offers a free spin feature which can lead to unlimited spins, and an expanding symbols mechanic that can unleash bigger wins.
  • Honey Rush – Released in 2019, this cascading grid slot is set across four levels, each of which can be reached through winning combinations. Reach the top level and you have the chance of a x9000 payout. 
  • Animal Madness – One of the latest games from Play’n GO, this slot is perfect for newcomers with its simple and clear goals. It offers an RTP of 96.2% and a maximum win of x2250.   

Best Playtech Slots

Playtech achieved huge success with its Age of the Gods franchise which now totals over 30 different games.

Playtech has created over 200 slot games since its launch in 1999. Through its pioneering casino game development, the company has evolved into the biggest online gaming software supplier. One of its latest creations is Playtech ONE, a system allowing gamblers to access any game on any platform through a single account. Playtech caters to every level of casino player, offering everything from live dealer games to the latest slot technology. Its range of slots is a huge appeal, with creative themes and even the introduction of a shared jackpot style slot game. Some of their top slots titles are:

  • Age of the Gods – With 5 reels, 3 rows, and 20 paylines, this Ancient Greek God-themed game is a popular choice for gamblers. There’s a chance for a x10,000 payout if you consecutively reveal five of the six high-scoring God symbols.
  • Beach Life – A sunshine-themed game with 5 reels, 3 rows, and 20 paylines. Look out for the treasure chest symbols which activate the Sunken Treasure Bonus game and leave you with the opportunity to land a progressive jackpot.
  • Everybody’s Jackpot – The concept behind this popular progressive jackpot is that every player who has placed a minimum deposit in the last 24 hours will take a share of the jackpot. It offers a traditional 3-row and 3-reel appearance, with 8 permanent winlines that independently move left to right or up and down, uniquely increasing a gambler’s chances of success.  

Best Yggdrasil Slots

Double Dragons is one of Yggdrasil’s most popular slots.

Yggdrasil has been winning awards ever since it debuted on the scene in 2013. In 2022, the company added to its list of gongs with the Platform Supplier of the Year accolade from the EGR Nordics Awards, and RNG Casino Provider of the Year from the Gaming Awards. Licensed in 24 jurisdictions, Yggdrasil hosts a selection of slot games that hit the highest levels of quality in artwork and design. Try out some of the following:

  • Jungle Books  –  This popular game holds an RTP of 96.1% and a low volatility, and its maximum pay out is £500,000. The creativity of this game is huge, with 45 possible feature combinations. Through this game, Yggdrasil introduced Fusion Realms, a new mechanic that mixes a range of different reel structures and design features into the game.
  • Spina Colada –  A cocktail-themed slot game with a host of re-spins, multipliers, and four bonus features. The respin feature is available throughout the game. Symbols that match are frozen and the others replaced, each spinning until the right combinations are achieved. There’s also the benefit of a bonus round that guarantees a win each time.
  • Double Dragons – With 5 rows and 25 paylines, this aesthetically impressive game contains dragon’s eye symbols on the reel. If you achieve four consecutive wins, you’ll open up the Double Dragon feature, unveiling two high-stack wilds that can be up to 28 symbols long. 

Best IGT Slots

Wheel of Fortune is one of IGT’s best-known slot games.

Around since the 1950s and now employing more than 10,000 people across the globe, IGT is one of the biggest players in the gaming industry, offering land-based gaming machines and lottery products, as well as sports betting and digital gaming. Headquartered in London, the company is the holder of some pretty impressive silverware, not least Casino Supplier of the Year from the 2022 Global Gaming Awards London.

Give some of these titles a go:

  • Wheel of Fortune – IGT is behind the popular Wheel of Fortune slot. The original game, based on the TV show, is now joined by new variations like Wheel of Fortune Elegant Emeralds and Wheel of Fortune Megaways. Gameplay and RTP varies between the different titles, so there are plenty of different ways to enjoy the game. 
  • Medieval Money – Slots players were first introduced to Medieval Money in 2016, though this is a slot that takes you much further into the past. Cartoon-style graphics, jousting knight wilds and huge potential payouts of up to 25 million coins all add to the fun. The standard RTP is 96.30% but some casinos might set this lower, so be sure to compare UK casinos and slots sites before making your first deposit.
  • Silent Movie –Silent Movie transports players to the roaring twenties where an old movie theatre takes centre stage. Unlike many IGT slots, Silent Movie doesn’t offer a progressive jackpot. However, with 30 paylines, winnings multipliers, wilds, scatters, and free spins galore, that won’t be a deal breaker.

Big Time Gaming 

Bonanza slot gameplay desktop view

Big Time Gaming has arguably been the most important slots software developer over the past few years, pioneering industry-leading concepts like Megaways. The Australia-based company launched in 2012 and found huge success with Dragon Born and Bonanza, the first-ever Megaways slots. This extraordinary game mechanic — that can present up to 117,649 ways to win — blew the slots world wide open, providing the most impactful new development since the early 2000s. Big Time Gaming has since gone from strength to strength, licensing its Megaways mechanic to several other developers and inventing new ideas like Megaclusters. It was acquired by Evolution in 2021, further cementing its place in the canon of iGaming innovation. Our favourite Big Time Gaming slots include: 

  • Bonanza: The second Megaways title that changed everything. Players enjoy up to 117,649 ways to win and a 26,000x max win alongside randomly triggered multipliers and more. 
  • White Rabbit Megaways: One of the highest RTP games available at slot sites, White Rabbit Megaways has a 97.24% score and an extraordinary 248,832 potential ways to win. 
  • Star Clusters Megaclusters: An innovative Megaclusters game allowing up to 256 symbols on the reels at once, Star Clusters Megaclusters is a high-octane BGT classic not to be missed. 
Responsible Gambling

Responsible Gambling at UK Slot Sites

While gambling and playing online slot games can be a great form of entertainment, it’s important to be mindful of knowing your limits and to recognise when it’s becoming a problem. 

At Compare.bet we keep responsible gambling at the forefront of everything we do, and we have a few tips that we recommend all of our users follow. 

  • Only play slots at licensed UK online casinos 
  • Set a budget and keep to your limits
  • Be mindful of why are you gambling and recognise when it’s no longer for fun 
  • Set a time limit for your play sessions
  • Never chase your losses – you can quickly find yourself in an even deeper hole, and it’s not worth the risk
  • Avoid drinking alcohol while gambling, or playing while tired or upset
  • Understand the game you’re playing before you place a wager
  • Don’t be tempted to view gambling as a way of earning money

Where To Get Help

It’s a huge step to recognise when gambling is no longer fun, or has become a problem that’s affecting other areas of your life. Thankfully in the UK, there are many fully-trained professionals working for organisations who offer support for problem gambling and addiction. If you feel it may be beneficial to seek help for yourself or someone close to you, take a look at the list below to see who may best suit your support needs. 

  • GamCarethis national charity is ideal if you need information or advice relating to problem gambling. It offers 24/7 support via web chat and hosts a National Gambling Helpline (0808 8020 133).
  • GAMSTOPthe best way to immediately control your online gambling is with GAMSTOP. Once registered with the service, you will be self-excluded from gambling websites and apps relating to companies licensed in Great Britain for a period of your choosing. 
  • www.BeGambleAware.org another great charity offering information while supporting people in making informed decisions about safer gambling.
  • Gamblers Anonymous  – locally run groups that hold regular meetings to help support those affected by problem gambling.
  • National Problem Gambling Clinicthis forms part of the National Gambling Treatment Service and is commissioned by both NHS England and GambleAware. It looks to advance and develop psychological therapies for people struggling with problem gambling.
Time to Play!

Compare Slot Sites and Sign Up

Now that we’ve taken you through the ins and outs of online slots, you’re ready to head to the casino and spin the reels! Not sure where to play? You’re sure to find your best bet from our carefully curated list of top online casinos. It’s jam-packed with casinos that offer the best slots, promotions and bonuses you’ll find online. Simply compare and sign up to claim your welcome bonus!

Top 10 Best Licensed Slots Casinos for UK Customers:

Betting Site Our Score Accepts PayPal NetEnt Slots Licence
Jackpot Village
77% No Yes UK Gambling Commission
All British Casino
79% Yes Yes UK Gambling Commission
Play Ojo
86% Yes Yes UK Gambling Commission
Playzee
86% Yes Yes UK Gambling Commission
Spin and Win
84% Yes Yes UK Gambling Commission
The Sun Vegas
80% Yes No UK Gambling Commission

Frequently Asked Questions

Do I need an account to play free online slot games?

Yes. If you’re playing at a UK slot site, you’ll need to create an account, and have the slot site verify your identity before you can start playing. These rules apply whether you’re playing free slots or real money games, though the exact account verification process will vary between sites.

Are these slot sites safe?

Yes. All the slot sites we recommend are licensed by the UK Gambling Commission, which ensures they’re held to high standards when it comes to player protection. This means each site uses industry standard data encryption and provides secure payment methods and communication channels. It also guarantees that each slot you play is fair and uses RNG, so you can play in confidence at our recommended slot sites.

Will I win more money if I set higher stakes?

Not necessarily. Of course, you could get lucky and hit the jackpot when you bet big on high roller slot games, but putting more money on the line doesn’t increase your chances of winning. Choosing a high payout slot is your best bet when it comes to playing games online but, even then, you’ll need luck on your side. Unfortunately, there’s no strategy for how to win at slots.

Can I play slots against other players?

No, but you can play online slots tournaments. You aren’t technically playing slot games against other players, but rather competing in a leaderboard. There are often prizes up for grabs for the most successful slots players, but you should bear in mind that there’s usually a tournament entry fee.

Can I use PayPal to deposit at online slot sites?

Yes. The best slot sites offer a wide variety of banking options, including PayPal deposits and withdrawals. Found the perfect new slot site but it doesn’t accept PayPal? Neteller and Skrill are good alternatives, offering instant deposit and fast withdrawals.

Are high volatility slots for everyone?

No. High volatility means the slot tends to pay out less frequently but in larger amounts, meaning those with a smaller budget could burn through their bankroll before seeing any significant wins. Some players may simply prefer to see smaller wins more often, in which case a low variance slot will be more suitable.

What is the best online slot for payouts?

It’s hard to give a definitive answer here, but the slots with the best payouts typically have a high RTP. Ugga Bugga (99.07%), Mega Joker (99%), Ooh Aah Dracula (99%), and Jackpot 6000 (98.8%) are a few examples, but anything over 98% is considered high.

Can I use auto-spin on UK slot sites?

No. The UKGC banned this feature in 2021, along with quick spin features and spins shorter than 2.5 seconds, in a bid to make slots safer by design. As such, all UK slot sites were required to remove these features to comply with the regulations.

Do I have to pay wagering requirements on free spins bonuses?

It depends on the bonus. While most free spins do come with wagering requirements, it’s possible to find bonuses with low or no wagering requirements. When there are no wagering requirements, you can withdraw any winnings straight away.

Can I get bonus offers at online slot sites?

Absolutely. The best slots sites will welcome you with a bonus like free spins or a matched deposit offer on your 1st deposit. There are lots of bonuses and promotions available for existing customers too. 

Which is the best online slot site app?

The best slot site app is a matter of personal taste. For example, you may want an app that offers specific slot games or an app that has lots of different payout options. That said, the Grosvenor Casino app attract great feedback from players. Browse our list of top slot sites for a greater selection.

The people behind this page

Compare.bet's online gambling content experts helped write, edit and check this page:

Danielle has six years of experience writing on a wide variety of topics, including online casino, sports betting and tourism. She has a BA in French with English from King’s College.

Daniel is Head of Operations at Compare.bet. He has half a decade of experience writing on topics including sports betting, online casino and the NBA. Daniel also covers Premier League football for Compare.bet news and has interviewed Louis Saha, Richard Dunne and Gary Pallister. In his spare time, Daniel enjoys film photography and making Spotify playlists.
Robbie joined us in 2022 as a staff writer. He's involved in all content across the site, from detailed guides and reviews to responsible gambling advice, and puts his detailed sports knowledge to good use across our betting pages. Outside work Robbie plays football most weekends, tempers his resilience as a West Ham fan, and keeps up to date with the latest cinema releases.

The following external expert(s) contributed to ensure this page provides maximum value, accuracy and insight:

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Adam has almost a decade of experience working in the gambling industry, including various content and marketing roles at the likes of PlayOJO, Betway and Entain He is currently the Head of Marketing at Arena Entertainment. Adam puts his vast experience to use as a fact checker for Compare.bet.
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James is a betting and casino expert at Compare.bet who specialises in writing and editing in-depth guides and reviews. As well as producing copy for the site, James is instrumental in making tweaks that keep our pages at the cutting edge of gambling comparison.
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Guy is a writer, editor, and news contributor at Compare.bet. Along with producing expert commentary on the betting industry, Guy presents our weekly Premier League predictions and betting tips on Compare.bet News. Outside work Guy is a Spurs fan, football player, cricketer, and chess obsessive.