Best Online Casino Slots & Games

The Best Online Casino Slots to Play at UK’s Top 10 Slot Sites for 2020

Online slots account for 68% of casino wagers on the internet, making them by far the most popular game around. With dozens of top sites offering hundreds of exciting titles, it’s hard to choose the right option. Take a spin with us, then, as we explore all aspects of the best online slots casinos.

The Best Slots Casinos Play for Real Money Now! Benefits of playing online.

This page will provide a guide to getting started at online slots casinos for any beginners who are interested in making an account at one of the best slot sites, as well as show you how to make a deposit. For more information about related topics, check out these articles.

top online casino slots in uk

Best Slots Sites For Real Players

If you want to play the most interesting and exciting online slots, you should check out these top six best slots casinos. Here, you will find hundreds of games to play with real money, in themes spanning from classic to modern, fairy tales to music, and everything in between.

What’s even better is these games are playable with loads of online slots bonus offers. First things first, though, let’s have a look at the best slots casinos out there right now.

As you can see in the table, all of the operators have something slightly different to offer in terms of the available games, return to player rates, and welcome bonuses, which I’ll explain further down the page.

If you’ve looked at the bonus conditions for a casino and are ready to begin, click the appropriate Claim Bonus button in the table above. Here are the simple steps for setting up an account and getting your hands on a welcome promotion.

There are a lot of topics related to online slot games that I decided are worthy of a dedicated article, due to the depth and breadth of the theme. You can take your time to read through these pages by clicking on the topic of interest below.

It’s difficult to a complete overview of the best real money slots on the online market, as there are so many out there. So, without further ado, here is a complete list of the top 204 most popular and most played online slots.

Browse them in any order you please, or click through for a full individual game review and best slots casinos for each title. You will also find free demo versions of each game in their respective reviews.

The Highest Real Money Slots Payout Rates

The return to player (RTP) of an online slot game is one of the most important things to understand when trying to select from the thousands of options out there. This figure, described as a percentage, indicates how much of the wagered money will be paid out to the player base over time.

The important thing to remember is that this number is theoretical. As such, it is not directly related to the chances of your winning at each spin. The closer to 100%, however, the fairer the game is to its players overall.

This table provides a great look at the best online slots games and suggests a leading casino where you can play it right now for real money. You can also see which provider created each game so that you can get a feel of which company might suit your tastes.

You’ll see that no jackpot games are included on the list, which is not surprising as jackpots usually have among the lowest RTPs, to balance the fact that they sometimes pay out enormous sums of money. I’ll explain how RTP rates are tested later on the page.

Games With High Maximum Wagers

Of course, one of the main reasons gamblers love to play slots for real money is the potential for winning fat stacks of cash. The different games will have individual ways of working out how much they pay out, but the general rule is that the higher the wager, the higher a winning payout.

The lowest bets you can place is 1p, 1c or the equivalent in your currency per line, while some of the higher limits are much higher, reaching a max bet of £/$500 or more. The table below highlights some of the best slot games with high maximum bets, and the sites where you can find them.

 

Unsurprisingly, one of the many benefits to playing slots online is that the limits tend to be wider than in land-based casinos. It is important to set your own budget of how much you are willing to bet for each spin and check carefully before every turn to make sure you have selected the right amount.

The Best Slots At Online Casinos

When choosing from the thousands of online slots online, do you pick the most entertaining, or the one with the biggest prizes? Well, there are actually plenty of games where both factors go hand in hand. You can also choose games by style or theme.

With that in mind, here are the best slots that sites will have in their portfolios, which are not only fun to play, but also have some impressive and innovative features that keep things interesting and fresh for players.

 

Mega Moolah – The Millionaire Maker

This famous game from the world-renowned software developer, Microgaming, has paid out millions of pounds throughout its history. In fact, it became a Guinness World Record holder in 2015 when a player won €17,879,645.12, then broke its own record in 2018 with an €18,915,872.81 prize paid out.

The African safari theme features bright and colorful cartoon-style animal symbols, reminiscent of The Lion King. There are four progressive jackpots available, which can be won in a spin-the-wheel bonus round.

The largest of the four prizes, the Mega progressive, is always guaranteed to be a minimum of 1 million. Of course, the life-changing progressive jackpot is the biggest draw of the game, but there are plenty of other rewarding features. These include double payouts with wild wins plus free spins, where all wins are tripled.

This millionaire-making slot machine can be played at most casinos that host Microgaming software. My recommendation is Betway, where Mega Moolah can be found alongside more than 770 other great slots.

Mega Fortune – The Glitzy Slot with a Huge Progressive Jackpot

The theme of this spectacular NetEnt title screams wealth and glamour. Mega Fortune is dripping with bling, yachts, stretch limos, jewelry, and champagne – and the theme perfectly matches the legacy of the slot.

It has held the world record for the largest online slot payout twice. The biggest prizes can be won during the bonus round, where there are three jackpots and various cash prizes up for grabs.

When you line up three bonus symbols, you enter the jackpot game where you can spin the three-stage wheel of fortune. Each spin gets you one step closer to the inner wheels and the bigger prizes. Make it all the way to the center and you’ll walk away with the impressive Mega Jackpot.

This progressive jackpot builds and builds until it is won, usually worth in excess of 1 million. You can play this captivating game at Mr. Green.

Reel Rush – Modern Classic

This is one of the more innovative titles you’ll find online. When you launch it, you’ll see that some of the spaces at the corners of the reels are inactive. Every time you get a win, a re-spin is triggered, and two of the inactive spaces are opened up, increasing the number of ways to win.

Each consecutive win triggers another re-spin, with even more ways to win. When you get another win after five consecutive re-spins, eight free spins are awarded and all of the hidden spaces on the reels become active. This opens up a massive 3,125 ways to win. Now, as you can imagine, this is where you will see the biggest payouts.

In fact, you can pocket up to 480,000x your bet. This innovative and unconventional gameplay builds up the excitement and anticipation with every single spin. It features superb graphics and mixes the style of classic console games with modern arcade-style games.

There’s also a funky soundtrack, again adding to the fun factor. You can try out this unusual slot, both for free and for real money at 888casino.

Starburst – Consistent Choice

This video slot from NetEnt became an instant hit with players. It is visually stunning, with bright, vibrant colors and sparkling jewels. The outstanding graphics and the exciting sound effects create an arcade atmosphere that is engaging and captivating.

It is fast-paced, with fun and innovative features. Take for example the Starburst Wilds. These replace the usual wild symbols and expand to cover the entire reel. Plus, these expanding wilds stay in place for up to three re-spins, providing the possibility of astronomical wins.

Another unusual feature is the chance to win both ways. This breaks the mold of traditional video slots and again provides the chance to stack up plenty of payouts. Thanks to the huge popularity of this game, many of the best online casinos have included it in their game collections.

One of my favorite places to play Starburst is 888casino, where you will find it alongside hundreds of other top games.

Age of the Gods Jackpot Slots

This is not just one game, but a collection of exciting slots with two things in common: Greek mythology and a massive mystery progressive jackpot. There are nearly ten available, each based on different characters in Ancient Greece. Highlights include King of Olympus, Furious Four, Goddess of Wisdom, and Fate Sisters.

There are four jackpots to be won in each, which can be triggered randomly at any time. This means so you don’t even need a winning line in order to enter and to be guaranteed one of the four jackpot prizes.

Age of the Gods Jackpots in Overview
  • Power Jackpot – Around £400 every 30 minutes
  • Extra Power Jackpot – About £4,000 every 2 hours
  • Super Power Jackpot – Up to £35,000 daily
  • Ultimate Power Jackpot – Over £800,000

As you can see, the Power Jackpot is the smallest. The biggest payout is the Ultimate Power Jackpot, which is often worth millions. Along with the draw of these huge jackpot prizes, the games are packed full of interesting features and boast stunning graphics and sound, making for a very enjoyable playing experience.

These enticing slots can be found at all Playtech operators, and there’s now also a spin-off roulette game that features the same progressive jackpot pool. My top recommendation for giving these reels a spin is Ladbrokes.

Gonzo’s Quest – With the Innovative Avalanche Feature

NetEnt is famed for its innovative approach to development, and one which captures this style perfectly is Gonzo’s Quest.

In it, the traditional spinning reels you find in most video slots are cast aside in favor of the Avalanche feature. This sees the Mayan symbols fall into place in the game. When a winning combination is lined up, the symbols explode and disappear, allowing others to drop into their place.

This unusual and creative setup creates the opportunity to get multiple lines wins from just one “spin”. Also, with every subsequent win, the payout multiplier increases.

These exciting features are combined with cutting-edge graphics and 3D animations, that make gameplay enthralling and captivating. Gonzo’s Quest is one of the most popular online slots of all time and has been a huge fan favorite since it first became available. You will find it at almost any NetEnt casino.

Game of Thrones – Based on the Much-Loved TV Show

This hugely popular TV series has been turned into an impressive online slot by leading developer Microgaming. There are two versions available, one with 15 pay lines, the other with over 243 ways to win. You can play both versions at Betway or at Casumo.

The Game of Thrones slot is very true to the TV series, with symbols like the iron throne included, plus video clips and the iconic theme tune playing throughout. Yet it’s not simply the popular theme that has made it a success.

It is also packed full of rewarding and exciting features like the bonus round. Here, you take your pick from the four houses of Westeros, each with a different combination of free spins, stacked symbols, and win multipliers.

Apart from this, there is a gamble trail feature, where you journey through four map locations with the chance to double your winnings at each step.

Fun Real Money Slots with Interesting Themes

These games are just some of the most popular online slots among online players, but it is by no means not an exhaustive list. All different titles have their own unique features that make them stand out in one way or another, so I’ve highlighted a few real money slots with fun and interesting design elements.

Immortal Romance – a Vampire Romance

Vampires have long been a topic of interest across all different kinds of media, branching from the scenes of books and movies into an online slot with leading developer Microgaming’s much-loved Immortal Romance game. The sultry characters spin on the five-reel, three-row grid that has 243 different pay lines.

There’s also a stack of interesting features. For example, the game’s title card acts as a Wild that doubles any wins it creates, and three or more lion-faces scatters trigger a bonus round. During the so-called ‘Chamber of Spins’, free spins are awarded and wins are multiplied depending on which level of the bonus you are on. The more times you trigger the bonus in during the Chamber of Spins, the higher the benefits.

This is one of the most fun real money slots on the market, keeping things interesting and sexy all at the same time.

Cleopatra – A Timeless Classic in Both Land-Based and Online Slot Casinos
IGT has created some of the most popular and iconic machines found in land-based casinos and also successfully adapted and developed for online play. By far the most famous and outstanding title in this collection is Cleopatra. This Egyptian-themed video slot has stood the test of time.

Despite the countless new titles that are released online every month with cutting-edge graphics and innovative features, this game has lost none of its appeal with players. It remains one of the best online slots, sought after by players on the internet thanks to the authentic theme and the expansive range of special features.

These include double payouts for wild wins, plus free spins with super-rich reels where winnings are multiplied by three. The game is so much in demand, that two sequels are also available, including a MegaJackpots version with a huge progressive jackpot. What’s not to like? You can play it at Grosvenor online casino.

An in-game still of the Cleopatra slot game from IGT

Gladiator – The Award-Winning Film Becomes a Video Slot
When this iconic Ridley Scott film was released in 2000, it was met with critical acclaim and won a whole host of awards, including an Academy Award for Best Film. The popularity of the film saw it developed by Playtech into an online video slot. The slot was released more than seven years ago but remains a firm favorite with players.

This is thanks to the superb graphics, intermingled with animations from the film. Additionally, there are plenty of features that make it entertaining and exciting to play. These include not one, but two different bonus rounds. In the Coliseum Bonus round, you take your pick from different squares, to reveal how many free spins you will get and with which multiplier, plus which symbols will become your extra wilds and scatters.

There is also a jackpot version of the game available, where the Gladiator Bonus round provides the chance to get your hands on a big progressive jackpot payout. This game is available at most Playtech casinos, but I would recommend playing it at Mansion Casino.

Advantages of Online Slot Sites Compared to Land-Based Casinos and Arcades
There is no doubt that playing online offers numerous advantages compared to playing in a bricks-and-mortar slots casino or an amusement arcade. Some of these benefits are obvious, while you probably haven’t considered some of them. The following section outlines the advantages of playing slots online.

Find A Favourite for Free
Though they always say, “don’t judge a book by its cover”, that’s really all you can do when playing in a land-based casino, which will require money paid first. The majority of online slots, however, can be trialed for free, so you can familiarise yourself with the features of a game before spending any real money. This is especially helpful considering the staggering amount of different titles that are available out there.

Non-Stop Slot Fun With Mobile Casino Apps
Not only are online games available for you to play 24/7, but they’re also ready to enjoy from basically anywhere thanks to mobile casino technology. Many operators have their own dedicated app that you can download to your phone or tablet.

However, increasingly popular is the development of optimized websites that are built using HTML5, which means you can simply open your favorite web browser on your phone and play instantly, without any need to download an app.

 

Top 5 Best Rated Online Slots

 

Gonzo’s Quest

gonzo quest slot

When you play Gonzo’s Quest with real money, there are several ways in which you can boost your winnings. For starters, there are seven different Mayan themed symbols. Line up 3 to 5 identical symbols on a pay line and your line bet will be multiplied by a certain amount and paid to you. Therefore, the higher your bet amount, the larger the slots payout. The highest paying symbol is the blue and gold face, which pays x2500 for 5 of these. One of the unique features of this game is the Avalanche feature. This sees symbols fall into place rather than spin. When you get a win, the symbols explode and more fall from above to fill their place. This not only provides numerous chances to win from the same spin, but each consecutive Avalanche will see the win multiplier increase, up to a maximum of x5. The game also has a wild symbol, which substitutes for all others, therefore providing more chances of getting a winning combo. Whilst the video slot does not have a bonus game, it does feature free spins, or “free falls”. This is why this game is mentioned in many slot reviews. Line up 3 golden free fall symbols and you are awarded 10 free spins, with even bigger multipliers for consecutive wins.

Cleopatra Slot

cleopatra slot

Cleopatra is a very fun and popular classic slot, with 5 reels and 20 winning paylines. Created by one of the leading game providers – IGT, Cleopatra Slots will take you on a trip down the Nile and right in the heart of Egypt. This mystery-filled slot is extremely popular in land-based casinos all over the UK, so it was only natural for it to be at the top of the best online slots, as well. Cleopatra I and II are pretty much alike, with an RTP (return to player) of 95.02%. The bonus rounds are triggered by 3 or more Sphinx symbols and consist of 15 free spins. As you may already know, free spin slots have great potential in terms of possible profit, especially ones that grant multipliers during these free spins. The Cleopatra symbol is wild and can substitute all symbols, with the exception of the Sphinx. While doing so, the wild symbol values a lot and can also double your win. During the free spins bonus, should you hit another 3 Sphinx symbols, 15 more extra spins will be added, with a maximum of 180 free spins to be won. Also, 5 Sphinx symbols pay 100 times your initial bet.

Zuma Slots

zuma slots

Another UK all-time favorite, Zuma Slots are inspired by the addictive Popcap game with the same name. Just like all the popular land-based slots in the UK, Zuma features a wide range of 20 ways to win on a 5-reel slot machine. Three frog symbols trigger the bonus round. The same enticing sound effects of the Popcap game will announce the beginning of the extra spins round. You have to shoot one of 4 Tiki bosses to award you a certain number of free spins. Once the free spins are over, you have to shoot another one of the 4 bosses to reveal a multiplier on your free spins win. The Zuma symbols substitute all other symbols in a winning combination, except the Frog, and they multiply your win by up to 10 times. This means that you can really win big. The game offers a Gamble feature, which you can use to increase your profit after every win. This feature can boost your winnings by a maximum of 10 times and you can collect all or just a part of the winnings while gambling with the rest. There is also an Autoplay feature and you can set it to 50 spins and you can just sit back and enjoy the ride.

Monopoly Slot

monopoly slot

Perhaps the most famous board game in the world, Monopoly, can also be played as a slot machine today. The popularity of this slot is mainly due to the bonus games that can be triggered by certain symbols. Unlike some attractive 3d slots out there, the graphics of the Monopoly Slot are not as sophisticated and impressive as the previous slots that we have reviewed, but more simple and loyal to the style of the original Monopoly game. The bonus features are very attractive. This is why the Pass “GO” Bonus is packed with free rolls, like the ‘Spin until you win’ feature, multipliers, and more. Those are bonus terms and conditions that you may like a lot. First, you have to pick a card to see how many shots you get at the Bonus round to win real money. While 3 or more Bonus symbols will trigger the Pass “GO” Bonus, 3 Instant Bonus ones will trigger an Instant Bonus round. Wild symbols may substitute all other symbols in winning combinations, with the exception of the bonus ones. Landing on “GO” will win you a 2X multiplier and 5 Monopoly symbols will multiply your bet by 2.000. One of the few online casinos that offer Monopoly Slot is 888 Casino, with a pretty high RTP of 95,02%. Other slot machines like Game of Thrones offer a similar return to player rates.

Double Bubble Slots

double bubble slot

The Double Bubble is another fun slot with 5 reels and 20 pay lines. It somehow resembles the famous fruit machines. While you can play with your bet per line from 1p to £10, I strongly recommend playing all 20 lines, to make sure that you don’t miss out on anything. The maximum payout is 30,000 times your coin size, which is a pretty generous payout for a coin value in my book. The Double Bubble symbol is wild and may substitute any other, except for the bonus bubble. If you hit 5 wild symbols on a pay line, you will win 20,000 times your bet per line. The total win on one spin is awarded according to the base paytable and multiplied by the Bubble Line multiplier – which is 22 if you play on 20 lines. The Bubble Bonus game is triggered by the bonus bubble symbol on lines 1, 3, and 5. During this round, you will have to pop one of three balloons and you will win the corresponding multiplier hidden inside. The overall RTP is 96.02%, but it could vary from 95.75% to 96.24%, which is not at all a bad profit expectancy.

Of course, things can change quite swiftly in the world of online slot games, since there are new titles coming out all the time. In the next section, you can see detailed info about some of our former top 5 picks and what made them special – but the current 2020 list will be updated constantly with the latest online slots games that include random number improvements, so you might notice some differences! We are dedicated to bringing you slots only from the strongest contenders at the title of the best online casino UK players can aspire to play at! However, it is less than other slots like Immortal Romance or Wheel of Fortune, for example. Nonetheless, this means that your gaming experience will raise up, especially if you play these games on the best slots sites.

 

Best slots casino for mobile devices

A smartphone and tablet device showing a selection of slot games

Mobile Slot Games

Mobile slots casinos have wide selections of titles, with often hundreds of cutting-edge games with superb graphics and high payout rates. You’ll find an impressive selection of jackpots, including movie- and television-themed franchise slots or others with huge jackpot pools.

Whilst not all apps have a sky-high number of options, the best tend to offer unique and innovative real money slots from numerous software providers. There are often not as many options on apps or mobile-optimized sites.

This is because not all games are coded for small screens. The newer developers tend to be more mobile-focused. Either way, there are, of course, still huge arrays of games to play, and keep you entertained no matter where you are.

Real Money Slots Bonus Offers

Welcome offers are one of the most interesting ways that an online casino can try to stand out from the clamor that is the online casino industry. The details of an operator’s welcome bonus can take shape in a lot of different forms.

You will find deals out there with free spins on popular games or extra cash in your account. Some of the best slot site bonuses are highlighted in the table.

Most casino promotions will count wagers on real money slot machines on a one-to-one basis, and giving away free spins is becoming more and more commonplace. Always remember that an online slots bonus is only an offer and one that you can decline if you do not want to deal with the hassle of wagering conditions.

If any of the above promotions sound tempting, click through to claim your chosen promo. You can also find out about the best welcome casino bonuses around the world here.

How to Pay for Your Real Money Slots

Although you can certainly try a lot of different online slots for free, much of the reason we’re drawn to the magic of these games is the potential for a payday. But you have to be in it to win it – meaning you have to put money in the machine for the chance for any to come back out.

To do so, you will need to visit the cashier of your chosen operator and choose from one of its many different deposit methods. It is almost unheard of to find a casino that won’t let you add funds via a credit card, for example, and there will always be at least one type of eWallet like Skrill or Neteller available, too. Also common is the pre-paid, gift card style payment systems such as paysafecard.

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No Deposit Offer: New players only. £88 is granted in FreePlay (FP). FP must be claimed within 48 hrs of receiving the email and expires after 14 days. FP wins are credited as a bonus and capped at £15, exc. JP win. Deposit Bonus Offer: £20 min deposit. 100% up to £100 Bonus. Bonus wins are capped at £500. To withdraw bonus & related wins, wager 30x (bonus amount) within 90 days. Restrictions apply to deposit until the wagering requirement fulfilled.
Another popular alternative for making deposits and withdrawals at online slots sites is through the payment service, PayPal. The main appeal of the system is that once you have created an account, you can quickly, easily, and securely make payments to countless websites.

With eWallets like PayPal, you just need to login to the service through the operator, and instantly transfer funds to the casino – this makes PayPal slots extremely popular among players. A rarer option, but still an option nonetheless, is making transactions using bitcoin and other types of cryptocurrency.

How to Tell if Slots are Fairly Programmed
As explained earlier, all games have a return to player (RTP) percentage that dictates how it will pay out winnings over time. It is important to know that a site is fair. But how can we make sure that these numbers are more than just a figure plucked out of thin air?

Well, as part of the licensing requirements from most regulatory bodies, all titles must ensure their RTP figures are tested and approved by independent bodies. This must happen on a regular basis, too.

Many online slots sites will promote this fact by placing the logo for its testing company in the footer of its website, which is why the eCOGRA, GLI, and iTechLabs logos may look familiar to you.

You can now view the accreditation awarded to the operator in question by the nominated testing agency. This means the games are all certified to be safe and fair. You are free to play!
This is probably one of the biggest advantages of playing slots online. The theoretical payout percentage is usually between 90% and 95%. As for the return to player percentage in brick and mortar casinos, it falls far short in comparison.

The reason for this is that online casinos have significantly smaller running costs. In turn, online slot sites are able to pass these savings on to their customers by way of greater payouts. Therefore, if you choose to play online, you are far more likely to see greater payouts than when playing elsewhere.

More Jackpot Games with Bigger Prizes
Online, you’ll find a wide variety of games with progressive jackpots. Each player who chooses to play a jackpot game contributes a portion of the wagers towards a pooled prize fund. Owing to the massive numbers of people that play online slots, these progressive jackpots can quickly build to staggering amounts.

Much Larger Game Selection
Due to the space restrictions, there is a limited number of slot machines available in a land-based casino. When gambling online, this restriction is removed entirely as there are no space limitations, meaning online sites can provide hundreds of titles. Additionally, online versions allow easy access to game rules and payout tables.

All Games Are Available at All Times
Land-based casinos and amusement arcades do no open 24/7. Plus, there may be restrictions to opening times on some public holidays as well. This issue is eliminated when playing online. Online casino games can be played anytime, day or night, each and every day of the year.

Plus, unlimited numbers of players can play the same product at the same time online, so there is no need to fight over the top online slots.

Other Game Styles You’ll Find Alongside Slots
Just like millions of other gamblers, you’re looking predominantly to play slots online. However, the best online slots casinos will also feature other popular styles of games, such as card games blackjack and poker as well as roulette.

Disadvantages of Playing Slots Online
Although I am clearly a convert to the online gambling scene, it would not be a balanced article for you without me also sharing any downsides to playing slots online, as opposed to in a land-based casino. One of the most common complaints centers on the lack of atmosphere when playing at home.

For many, heading to the casino is a social affair, where one gets to spend time with friends, play some games, and have a few drinks or a steak dinner. In this case, the night out is just that, more about having a night out. It’s dressing up in your best fancy outfit and enjoying the ambiance and company at a gambling house.

Conclusion: Start Playing Slots Online

As you’ll no doubt have gleaned from this article, there is a lot of fun and cash money out there waiting in the form of online casinos. There are a lot of different operators you can select from, all of which have a bonus for you to snatch up, huge game libraries, and a veritable avalanche of real money slots.

I have carefully considered all of the leading options to offer the list of best online slots casinos, which makes it very simple for you to get right into the thick of it and have some fun! If you want to find out about other aspects of sites, why not start with our guide to the best online casino sites?