Updated: 25.08.2025
UK players love online slots, and for good reason. Play them and you'll quickly see how easy and fast they are, how many games there are (with more themes than you can count), and how many fun features they have (with as many ways to win as there are games). You can also play them for real money anywhere, anytime (or, if you like, virtually anywhere, anytime), and the slots bonuses you can claim make the whole thing a sporting proposition.
Here we look at all the essential information you need to know about playing and discovering the best slots and bonus offers on the UK market today.
To start, here’s the best online slot sites in the UK that we recommend.
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MIN. deposit : 5 Free daily odds boost Highly prestigious brand |
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| 18+ New UK+IRE customers. Paypal and certain deposit types and bet types excluded. Min £5 bet within 14 days of account reg at min odds 1/2 = 4 x £5 free bets. Free bets valid for 7 days on sports, stake not returned, restrictions apply. T&Cs apply, | |||||
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MIN. deposit : 10 Wide range of offers Price boosts each day |
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| £10 min deposit using promo code 200BONUS • The bonus will be applied once the full deposit amount has been wagered at least twice with cumulative odds of 1.50 or greater • To withdraw any winnings from your bonus, you must wager the bonus amount at least 5 times • All deposit and bonus wagering requirements must be completed within 60 days • This offer may not be combined with any other offer • Wagering limit of £50 per bet Applies • Restrictions apply to withdrawals, payment methods and countries & full T&Cs apply. | |||||
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MIN. deposit : 5 Extra places and BOG Correct4 football game |
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| 18+ Eligible UK+IRE players. Paypal & some deposit & bet types excl. Min first £5 bet within 14 days of account reg at min odds 1/2 = 4x £5 free bets. Free bets valid for 4 days, stake not returned. No cashout, restrictions + T&Cs apply. | |||||
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MIN. deposit : 10 Very well-regarded bookie Fantastic range of offers |
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| For new customers only - Bet £10 & Get £50 in Free Bets for new customers at bet365. Min deposit requirement. Free Bets are paid as Bet Credits and are available for use upon settlement of bets to value of qualifying deposit. Min odds, bet and payment method exclusions apply. Returns exclude Bet Credits stake. Time limits and T&Cs apply. | |||||
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MIN. deposit : 10 Innovative social features Free soccer betting tips |
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| New UK, IE & Malta users only. Min. £10/€10 first deposit only using Debit Card or Trustly. Free bets expire in 90 days. T&Cs apply. | |||||
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MIN. deposit : 10 Outstanding track record Fixed odds & spread betting |
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| Don’t miss our exclusive World Cup offers for new and existing customers. Terms apply. Full details available here. | |||||
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MIN. deposit : 10 Excellent track record New Bet Boost each day |
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| New customers using Promo code H30 only, Min £10/€10 stake, min odds 1/2, free bets paid as 2 x £15/€15, free bets credited after settlement of first qualifying bet, free bets will expire 30 days after the qualifying bet is placed, payment method/player/country restrictions apply. See full terms below. | |||||
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MIN. deposit : 30 Specialise in horse racing Boost on football accas |
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| 21+, new UK + IRE members only. Min deposit £10. Singles, win part of e/w or multiples at odds of evens (2.0) or greater qualify. The Free Bet must be placed at odds of 1/2 (1.5) or greater. Free bets expire in 7 days. The Free Bet stake is not included in the returns . Additional T&Cs apply. Bet responsibly. | |||||
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| 18+ New Customers opt in, bet £5 & get 2x £10 Free Bets for set events (odds 2.00+) + £10, Slots Bonus, selected games, 35x wagering to withdraw max £250. Bonuses expire in 7 days. Card Payments only. T&Cs Apply | BeGambleAware®: Gambling Help & Gambling Addiction | BeGambleAware | Please gamble responsibly | |||||
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| New customers only. Max one free £15 bet. Qualifying bets must be placed at odds of 1/1 (2.0) or greater. Paid as bonus token with min 4/5 (1.80) odds req. Skrill, Neteller & PayPal not eligible. T&Cs apply. 18+ | |||||
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MIN. deposit : 10 Deep in-play section Widespread racing streams |
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| *New members. £10 min deposit & bet on sportsbook, placed & settled at 1.5 min odds within 14 days of sign-up. Win part of E/W bets. 2 non-withdrawable £10 Free Bet Tokens: accept in 7 days, valid for 7 days from acceptance (ex. E/Ws & Multiples), stakes not returned. Click here for Rules & Exclusions. Bet Responsibly. BeGambleAware.org | |||||
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MIN. deposit : 10 Increasingly popular site Free bet refunds on racing |
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| 18+ begambleaware.org; New bettors get 50% of deposit up to £50; Once per household; Min deposit £15 (no Skrill/Neteller); Wager a total of 8 times deposit + bonus, with max qualifying bet stake equal to your initial bonus amount; Bonus expires after 60 days; Min odds of 4/5 on singles, or 2/5 per leg for acca; Some bet types excluded; See full terms; See full terms; Terms apply; 18+ | |||||
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MIN. deposit : 5 Famous Free Bet Club #BetYourWay for football |
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| New UK customers only. Min Deposit: £5. Maximum Free Bet: £30. First bet on a Football or Horse Racing multiple with 3+ selections. Overall odds: 3.00 (2/1) or higher. Free Bets available upon settlement of the qualifying bet. Debit card deposits only. This is offer is valid for 7 days from your new account being registered. 18+ BeGambleAware.org Full terms apply. | |||||
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MIN. deposit : 10 Boosted specials on football Various free bet offers |
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| Get a Free Bet up to £35 based on 50% of your first days losses plus 10 Free Spins! UK 18+ T&C's apply. | |||||
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MIN. deposit : 10 Money-Back football deal Exceptional mobile apps |
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| Terms apply | |||||
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MIN. deposit : 10 Acca protection & boosts Wide range of deals |
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| 18+, Welcome Bonus: New Players only, 1st Deposit, Min Deposit: £10, max £15 bonus, valid for 14 days, bets must be placed at a min. odds of 1/1 (2.00) or greater and be settled within 14 days of placement. System bets no eligible. Full T&Cs apply | |||||
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MIN. deposit : 10 New specials bets each day Multiple acca promotions |
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| New UK customers (Excluding NI) only. Mobile exclusive. Min stake £10. Min odds Evs. Free bet applied on 1st settlement of any qualifying bet. 30 days to qualify. Free bets expire in 7 days. Cashed out/Free Bets won’t apply. Payment method restrictions. 1 Free Bet offer per customer, household & IP Address only. 18+. T&Cs apply.**18+. Opt in. UK/IRE customers only. Max refund £/€20. Win or win part of e/w outright singles only. 5 or more runners. 1st bet on each race. Free bet expires after 7 days. Free/void/antepost bets don’t qualify. T&Cs apply | |||||
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| 18+ New Customers only. Deposit, opt in and place a £5 qualifying bet at odds of 2.00 or greater within 7 days of opening a new account; excludes cashed out bets. Receive 2x £10 Free Sports Bets, valid on set events only at odds 2.00 or greater, expires in 7 days. Plus a £10 Game Show Bonus, selected games, wager 40x to withdraw a max of £250. PayPal and Card Payments only. Geographical Restrictions and T&Cs Apply, See Below. Please Gamble Responsibly. | |||||
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| New UK customers only. Register using the promo code BETFRED60, deposit and place first bet of £10+ on Sports (cumulative Evens+) within 7 days of registration. First bet must be on Sports. £20 in Free Bets to be used on Sports, £10 in Free Bets to be used on Lotto and 50 Free Spins (20p per spin) credited within 48 hours of bet settlement. Further £20 in Free Bets credited 5 days after settlement. Bonuses have a 7-day expiry. Payment restrictions apply. SMS verification and/or Proof of I.D and address may be required. Full T&Cs apply. Terms & Conditions Apply | |||||
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| 18+, Welcome Bonus: New Players only. Valid on 1st deposit only. Min Deposit £10. Max Free Bet £40. Min turnover of £20 must be placed at odds of 1/1 or greater, and settled within 14 days of placement. System bets not eligible. PayPal, Skrill and Neteller deposits not eligible for promotion. Click to see full T&Cs | |||||
We have reviewed many online casinos, but we don't recommend just any site. Those that make it to our list of recommended UK slots sites have met our various criteria that allow us to consider them among the best. Each casino site must pass a number of rigorous tests. Here is what we look for:
Slots are not just one type of game. Many types of online slots can be played on either a desktop or mobile format, which is another big part of their appeal. Here's a look at some of the more common variations you can spin.
Often referred to as fruit machines, these are video slot games based on the traditional one-armed bandit slot machines that were popular in the early 20th century. Classic slots typically feature 1 or 3 rows of reels, and all kinds of fruit symbols such as cherries, lemons and plums make their way onto the reels. Other symbols often seen in classic slots include red 7s, yellow bells, and gold bars that carry the weight of any coins you might be paid out. Examples of classic slots that are popular today include Play'n Go's Fire Joker, Merkur's Triple Chance, and IGT's Triple Diamond.
These video slots, as the name suggests, have 3 reels. They generally fall under the classic slots category, but tend to feature more than just fruits on their reels. They can have 1 or more paylines and can come with bonus features such as scatter, wild and jackpot. Examples of popular 3 reel slots include NetEnt's Mega Joker (RTP 99.00%), Playtech's Alchemist's Lab (RTP 97.32%) and Microgaming's Bar Bar Blacksheep (RTP 95.03%).
They are the most popular types of slots today, available with 5 reels and 10 or more paylines. 5 reel video slots are available in a variety of interactive themes and offer many bonus features such as wilds, free spins and the ability to play bonus games. Some popular titles in the 5 reel category include Microgaming's Jungle Jim: El Dorado (RTP: 96.31%), NetEnt's Jack Hammer 2 (RTP: 97.1%) and Thunderkick's 1492 Uncharted Seas (RTP: 98.5%).
Video Slots are any online slot machine that has one or more layers of multimedia (i.e. animations, sounds, themed graphics, etc.). When you play slots online, no matter how simple or advanced the game interface, you're playing a video slot. Video slots cover a wide variety of themes (e.g. fantasy, sci-fi, supernatural, mythology, ancient civilizations, comic books, anime, movies, TV series, etc.). They usually have multiple reels and paylines and almost always have some sort of extra feature (e.g. Wilds, Multipliers, Scatters, Free Spins, Re-Spins, Bonus Mini Games, Megaways, Jackpots, etc.). Examples of popular video slots you'll find at the best slots sites in the UK include Microgaming's Immortal Romance (RTP: 96.86%), NetEnt's Starburst (RTP: 96.01%), Pragmatic Play's Sweet Bonanza (RTP: 96.51%), Eyecon's Fluffy Favourites (RTP: 95.39%), SG Digital's Rainbow Riches (RTP: 95%) and Play'n Go's Book of Dead (RTP: 96%).
Video slots that are based on a licensed product, such as comic book characters, board games, video games, musicians, movies or TV series, are known as licensed or branded slots. These machines typically have 5 or more reels and a variety of paylines. Some of the most popular licensed or branded slots include -MicroGaming's Game of Thrones (RTP: 95.03%) -and Lara Croft: Temples and Tombs (RTP: 96.05%) -Barcrest's Monopoly Big Event (RTP: 96%) -NetEnt's Guns 'N Roses (RTP: 96.98%) -Playtech's The Dark Knight (RTP: 95.96%)
Progressive Jackpot Slots are online slot games of great popularity and demand that can boast one or more jackpot prizes that get juicier and juicier until they are won. Depending on the game you play, your (seemingly) random selection of symbols when the reels stop can win you cash prizes ranging from a few hundred to a few hundred thousand to a few million pounds. (Let's not forget the seemingly mythical "life-changing amount of money" that progressive jackpot slots can potentially yield). Some of the better known games in this genre are: -MicroGaming's Mega Moolah (with an RTP of 88.12%); -PlayTech's Beach Life (with an RTP of 93.25%); -NetEnt's Mega Fortune (with an RTP of 96.00%).
Multiple payline slots offer more than one way to win per spin. Popular games in this category include 243 Ways to Win and Megaways slots. Megaways Slots, in particular, feature a staggering number of paylines - over 100,000 in some cases - that we can't even begin to count in this review. Developed by Big Time Gaming, the Megaways slot mechanic has been used by many software providers. Here are a few examples of popular (and pretty crazy!) multi-payline slots.
VR (Virtual Reality) Slots are immersive and engaging video slots that are played using virtual reality equipment. Most VR slots today are not found in licensed real-money casinos, so you won't lose any real money playing them. But in 2017, popular game developer NetEnt released several games in VR, including Starburst, Jack and the Beanstalk, and Gonzo's Quest. And those are just a few of the titles available to try out the burgeoning technology.
If you’re new to the world of online slots, here’s how to play*:
*Remember, online slots are a game of chance. No win is ever guaranteed. Play responsibly.
The top slots sites in the UK offer extensive slots promotions for both new and existing players. If you're a slots player, you can find some irresistible offers in the following common types of slots bonuses.
Many players from the UK are enthusiastic about playing slots with the highest RTP. But before you jump at the lucrative idea of playing payout slots, it's important to understand the RTP, volatility and house edge of the games you play.
Overall, the return to player (RTP) percentages for online slot games are quite high. When measuring RTP, calculating the average is almost always a good place to start. You can also get a better feel for the range by looking at the lowest and highest numbers. Overall, online slots have a pretty decent RTP range of 94-99%, with the average RTP being around 96%+. However, even the slots with the best odds don't have the highest RTP of any casino game.
What are the best playing slot games in terms of RTP? Check out our top five picks:
An old but still relevant game, Goblin's Cave is the most rewarding video slot around. Its design is very simple, but this goblin and gold themed classic from Playtech is simple in the way a treasure chest is simple: it holds wonderful surprises inside and is well worth your time. I got my start with this game and played it quite a bit before moving on to other video slots. Its RTP was just too good to pass up.
From Relax Gaming, Book of 99 is an Ancient Greek themed slot with five reels and 10 paylines. Launched in 2025, it's a fairly new slot that's made quite a splash. In addition to its incredible RTP rate (one of the highest RTP slots in the industry today), it's popular for its Free Spins feature, unlimited retriggers and up to 5,000x wins. Play it today at LeoVegas.
Return to the days of yore in Thunderkick's time-traveling adventure, 1492 Uncharted Seas. This visually stunning slot game not only wows players with its beautiful design, but also has some neat features that make the reels even more exciting. When you fill a reel with Expanding Wilds, you can trigger a bonus game that has some great spinning action. Launched in 2014, Duelz Casino's version of this high RTP cult classic gives you the chance to explore a seafaring adventure today.
Take a bite out of this 2013 NetEnt classic. Vampire lovers will love the theme of this 5 reel, 25 payline video slot that pays homage to several famous bloodsuckers, from Dracula to Lestat. Slot lovers are sure to love this vampire lair of a video slot as it features multipliers, wilds, free spins and a fun little Vampire Slaying bonus game feature to boot. Head over to 888 and play it on all your devices.
Do you like circuses and fruit machines? Then you'll love Jokerizer, a slot that debuted in 2016 to rave reviews. This carnival-themed video slot from Yggdrasil Gaming features 5 reels, 10 paylines and a stunning visual design that jumps off the screen. Almost every element of Jokerizer is designed to get your heart racing, from the pulsating soundtrack to the eye-catching animations. But what really makes our hearts skip a beat is the Jokerizer mode that can be activated after each win.
Choosing a slot site that is trustworthy and rewarding is not as simple as it sounds. Picking the first casino to appear in a Google search is not what I would call an informed decision, and while the UK Gambling Commission licenses at least 2,000 operators that all must follow strict (and often very good) rules, there are still major differences across them in user experience, payout speed, and overall fairness. I don’t want you to make a poor choice and end up cursing under your breath. So here are some professional tips to help you choose a good site.
Combining these checks separates the average casinos from the truly elite slot sites. These are the sites that value their players and operate transparently.
Many players only pay attention to the RTP (Return to Player) percentage when selecting an online slot. However, equally important in delineating your overall experience is volatility, which is also known as variance. Volatility refers to how much and how often a slot is likely to pay you. Understanding this will better enable you to select games that are right for your risk tolerance and budget.
If you are just starting, slots with low or medium volatility are a safer entry point. High-volatility games are exciting but demand patience. And, well, discipline. That said, the safest way to enjoy slots and get the most bang for your buck is to match the volatility of the games you play to your play style.
The way players appreciate online slots has been changed forever by the mobile gaming revolution. Hardly a top casino nowadays that doesn't mobile-optimise its offering, or even provide a dedicated app. But does this mean mobile is always better than desktop? Not necessarily: each platform has its own pros and cons.
The top UK slot sites guarantee complete synchronisation between devices. This ensures that your account balance, bonuses, loyalty points, and even saved game progress remain intact and accessible, no matter which device you use to log into your account. Ideally, a superb slot site allows you to begin playing on a desktop computer one minute and the next to play on a mobile device without losing any features.
In the end, it is a matter of individual taste. Mobile play suits the lifestyle of the player who travels often and sometimes just wants to spin a wheel. Those who would call themselves serious slots enthusiasts are still more likely to choose the desktop experience. There is something to be said for the kind of immersion you get from that gaming platform.
Many slots bonuses come with wagering requirements. These wagering requirements, also known as playthrough or rollover requirements, specify the amount you must wager in order to access the bonus cash or free spins winnings that are yours to keep. The wagering requirements can range from very low (a few times the bonus amount) to very high (over twenty times the bonus amount).
A wagering requirement of 35 times or less is considered low, especially if it only applies to the bonus amount. For example, if your bonus has a wagering requirement of 35 times, this means that you must wager 35 times the bonus amount before you can access the bonus funds. In this case, you would need to wager a total of $1,750 ($50 x 35 = $1,750) before you can access the bonus funds.
Wagering requirements can make even the best bonuses less appealing because you have to play with the bonus and deposit before you can cash out. But don't worry, some online casinos have recognized that players want straightforward offers and have started offering no deposit bonuses. Here are a few examples.
The best UK slots casino sites currently offering low or no wagering requires are:
What makes a premium mobile slots experience? For starters, the best online slots casinos are thoroughly optimized for smartphone and tablet screens, with the games they host rendering beautifully in both landscape and portrait orientation. In addition, the user experience is downright state of the art, with the user interface almost too responsive (in a good way), the navigation feeling absolutely seamless, and the games loading almost instantly without the kind of crashes that have plagued online casinos for ages.
The top sites guarantee that their mobile apps are available for secure and free download from the Google Play Store for Android devices and the App Store for iPhone and iPad users. In addition, these sites will assure their visitors that all HTML-5 slots in their games directory are available for play on mobile devices. This includes the classics of slot machine lore, as well as newfangled slots, wildly popular slots, and those near-suicidal progressive jackpots that tend to go on for far too long.
To top it all off, the best mobile slots sites will also offer great customer support, payment methods that are accessible on mobile, and promotions that include no deposit free spins on mobile slots, mobile bonuses, and the like.
New online slot casinos are popping up all the time, and many players wonder if it's a good idea to give these new sites a try, or if they should stick with the more familiar brands. As with everything else in life, there are pros and cons. In the case of new UK slots sites, the pros tend to be: they offer generous welcome bonuses; they have some unique gamification features; they're mobile-first; and they pay out faster than any of your friends can say, "There's a horse in my bathtub!" (Sorry, that last one's an inside joke.) The cons are: they don't have a track record; they don't have mobile apps; and you can't be sure of their security and fairness until they've been around long enough for the bad news to surface.
In the United Kingdom, online gambling and online slots play is only available to those 18 years of age or older. Real money can be used to play legal UK online slots, but only at brick and mortar virtual casinos that hold an active remote casino license from the UK Gambling Commission. If you are unsure whether the online casino you wish to use is legal, check the UK Gambling Commission's licensing information. In almost all cases, if the casino does not have this information, it is illegal.
That being said, if you have the intention of playing slots for real money, there are a few things about UK slots sites that you should be familiar with. For starters, you cannot make a deposit, nor can you play slots in "just for fun" mode, unless you have registered as a player and gone through the mandatory identity verification process. Without going through this process, you can't play, plain and simple.
In addition, certain game functions and features in online slots are prohibited by the Gaming Commission. These features include auto-play; slot spin speeds faster than 2.5 seconds; features that speed up the game or give the player the illusion of control over the outcome (e.g., manually stopping the reels before they would naturally stop); and sounds or images that give the false illusion of winning when the return to the player is equal to or less than their wager.
The UKGC takes responsible gambling very seriously and enforces strict rules on the online slots sites it licenses to ensure that players are protected from gambling-related harm. You can be sure that any site we recommend to you is legal in the UK.
Playing online slots is quick and easy. There is a huge selection of games, with uncomplicated rules, entertaining features and themes of all kinds, making them one of the most popular forms of entertainment in the UK. And when you hit the jackpot, the payouts can be astronomical.
Of course, choosing to participate in real-money slots at the top slots platforms in the UK goes beyond simply finding a plethora of gaming options. It involves making sure that those options come from reputable developers, that they have the right RTPs, that they're playable on mobile devices, and that there's a way to access fair to good promotional offers and fast payouts, with the kind of customer service you don't have to worry about.
Not sure where to start your slots adventure? Give one of our recommended casinos a try!
It is legal to play slots at online casinos that hold an active remote casino license from the Gambling Commission and you are at least 18 years of age.
The most popular video slots are 5-reel games with bonus features and high RTP rates. Examples of popular games include Immortal Romance, Book of the Dead, Rainbow Riches, Fluffy Favourites and Dead or Alive.
This is a slot machine that has one or more progressive jackpots. A progressive jackpot is a huge cash prize that starts at a certain amount but increases in size as players wager more and more until it is finally won. One of the most popular progressive jackpots is Microgaming's Mega Moolah, which has four progressive jackpots, the largest of which - the Mega Jackpot - starts at £1 million and only goes up from there.
Goblin's Cave by Playtech holds the top spot with the highest RTP of 99.32%. This is closely followed by another Playtech title, Ugga Bugga, which has an RTP of 99.07%. Close behind are the following two games: NetEnt's Mega Joker (RTP 99.0%) and Relax Gaming's Book of 99 (also with an RTP of 99.0%).
The most outstanding online slots bonus is one that has no wagering requirements and no limits on winnings. In plain English, this means that whatever you win from your online slots bonus is all yours and can be cashed out at any time.
The sites you can trust the most are UKGC licensed and offer: -fair slot bonuses, -a wide range of games from leading providers, -fast payouts, -and responsive support. The top sites we can recommend with confidence are MrQ, PaddyPower and 888.
