The Best Online Slots UK – highest RTP online slots in 2023

The best online slots in the UK with the highest RTP in the gambling market are the best globally too. From the days when land-based slot machines ruled supreme to the advent of the internet and virtual gaming, slots have remained one of the most popular casino games. The reasons for this range from the ease of game-play to the presence of fantastic game features, right down to the array of slot bonuses and free spins available.

The number of online slot games at the online casino is on a constant rise. Since players are spoilt for choice, it’s only natural that it gets increasingly harder to choose. At montycasinos.com, we aim to guide you to the best online slots for UK players. And in this feature, we will explain the types of slots available, the features of a good slot, and how to pick them. Of course, we’ll also share our expertly compiled list of the top titles to take for a spin.

Your Guide To Real Money Slots Online

Currently, online slots are more impressive, interactive, and numerous. There are many casino slot machines, and it would be nearly impossible for you to play all. That is why expert opinion comes in handy when choosing an online slot machine.

Montycasinos.com gets gritty with these games because we are die-hard slots fans and want to provide our readers with the best information. We try out games as they hit the market, old and new, classic, video, or jackpot progressive. We then provide trusted second-hand experience through our detailed online casino review. No need to bother about the slot game jargon as we’ve got that covered too. Moreover, where you play is just as important as the bonus games, we also recommend the most reliable online slot sites UK.

How to Play Online Slots

Online slots come in a variety of styles, designs, and sizes, with appealing graphics, innovative features, captivating gameplay, rhythmic music, and occasional large payouts. However, the basic rules and structure of the game remain the same; players place their bets, click spin, and hope for a win. 

Online slot machines consist of reels and rows, the number of which varies depending on the game variant. For example, traditional slots usually have 3 reels and 3 rows (3×3), while video slots can have more than 5 reels and at least 3 rows. The goal is to line up symbols across the reels on active paylines to win.

Here’s a simple step-by-step guide on how to play online slots:

1. Register at one of our highly recommended online slot casinos;
2. Make a deposit, obtain the bonus, and select your favorite online slot game;
3. Make sure you are familiar with the game rules and the value of each symbol;
4. Choose the number of paylines you want to play (some slots have fixed paylines, while others can be adjusted);
5. Determine your bet amount (you can choose anything from the minimum to the maximum or simply press the max bet button);
6. If desired, select the autoplay option, which can usually provide up to 100 automated spins or more;
7. Press the Spin/Start button to start the game and hopefully, win.

Factors That Make The Best Slots Games

Online slots generally look great aesthetically, but certain elements determine how much of an amazing slots experience players can get. The major slot characteristics are:

• Payout percentage
• Paylines
• Volatility
• Bonus rounds

A higher payout percentage slot will be more profitable to players, just as numerous bonus rounds would take the entertainment level up a few notches. 

Game manufacturers use these factors to develop online slots, so it is important to understand them before you begin playing them. We will explain each one in more detail below.

Payouts and RTP

Understanding the concept of Return to Player (RTP) is important when playing online slot games. This percentage is an estimate of the money a game will return to the player over a long period of time, based on an average calculation.

RTP essentially gives insight into the house advantage. For example, if a slot game has an RTP of 94.75%, it means that the house will theoretically keep £94.75 for every £100 bet. However, because slot games are based on chance, some players will win while others will lose. That’s just the nature of the game.

The RTP gives you a rough estimate of the average return you can expect. Ideally, you should choose a game with the highest RTP. For instance, NetEnt’s Mega Joker has an RTP of up to 99%, and Jackpot 6000 offers up to 98.8%, making them some of the top slot games in terms of RTP.

When you browse the games on the best online slot sites, you’ll find a payout table. This chart shows symbol values and paylines, explains features, and provides jackpot information. The payout tables also list the winnings in either cash or a multiplier format.

For example, seeing ‘100x’ means you could win 100 times your single line bet. This chart gives details about bonus rounds in online slots, including the smallest and largest prizes. You can use this information to estimate your potential payouts on new online slots.

Best Paying Slot Games UK by Provider

When searching for the top-earning slot games in the UK, it’s essential to consider the game developers. Focusing on developers renowned for high-yield slot games can simplify your search.

Pragmatic Play, NetEnt, Microgaming, and RedTiger are among the leading developers of high-paying slot games in the UK. Another strategy to find the best-paying slot games is to read reviews from other players and industry experts. They may provide useful advice on the most profitable games. Don’t forget to check the game’s RTP (return to player) percentage and choose the highest one available.

Service Provider	Slot Game	Return to Player
NetEnt	Mega Joker	98.90%
QuickSpin	Jokers Strike	98.11%
Microgaming	Hot Ink	98.00%
YggDrasil	Jokerizer	98.00%
BluePrint Gaming	Fortune of Sparta	97.04%
Red Tiger	Wild Spartans	96.43%

Best RTP Slots

High RTP (Return to Player) slots are essential as they potentially offer players the best chances to reduce their session costs. But, keep in mind that RTP is calculated over billions of spins. Therefore, even with high RTP slots, long losing streaks can still occur.

RTP% stands for Return To Player Percentage

The RTP% is the theoretical amount of the total bet that is returned to the player as winnings, based on a large number of tested spins.

RTP% shows the part of the total bet that a game returns to players over a large number of spins. For example, a high RTP, like 98% or more, means that the slot game is designed to return 98% of all bets. A slot with an RTP of 96% is naturally lower. But, the RTP can be much higher or lower than the advertised number in a typical session of several thousand spins.

One thing is for sure, the longer you play, the closer your results will align with the projected RTP%. Here are some of the highest RTP slots available at the best UK-licensed casinos:

• Goblin’s Cave (Playtech) – 99.32%
• Ugga Bugga (Playtech) – 99.07%
• Ooh Aah Dracula (Barcrest) – 99%
• Mega Joker (Netent) – 99%
• Jackpot 6000 (NetEnt) – 98.86%
• 1429 Uncharted Seas (Thunderkick) – 98.6%
• The Catfather (Pragmatic Play) – 98.10%
• Rainbow Riches Pick n Mix (Barcrest) – 98%
• Blood Suckers (Netent) – 98%
• Jokerizer (Yggdrasil) – 98%

How to Find a Slot RTP

Thankfully, RTP information for most slot games can be found on the provider’s or casino’s website. By looking in the slot’s help or information sections, players can discover the RTP for specific games. This information can help players make informed decisions, preferring slots with higher RTP over those with lower values.

Slots RNG (Random Number Generators) and How they Affect Games

A random number generator (RNG) is a device that determines the result each time you spin a web slot game. RNGs are used not only in online games, but also in physical slot machines in casinos and arcades. They’re also used to determine outcomes in online casino games, like those on blackjack sites.

The randomly generated number is processed by the game’s software, leading to a definitive outcome – a win or a loss.

All licensed operators serving UK players are under the supervision of the UK Gambling Commission (UKGC). The UKGC monitors the RNG technology used by online slot sites to ensure its fairness.

Slot Paylines and Paytables

Paylines are patterns (or lines) on the reels that award a win when you land matching symbol combinations. Lines can be fixed or variable, and variable paylines allow you to set the number of win lines per spin.

Knowing the number of paylines a game has is important because it determines your chances of landing a winning combination.

Imagine a 5-reel video slot with 20 paylines and another with 50 paylines. You will have more ways to win with the 50-line slot than with the former.

You can find the paylines displayed within the paytable, alongside the game symbols and how much each pays when you land a matching combination. Always visit the paytable before playing online slots to better understand the game’s rules.

Paylines

• Reel Payout Line Wins
• Total Payout Line Wins
• Wins through Cluster Pays™

When considering a slot machine, not only the number of reels matters, but also the design of the reel. It’s important to know whether winnings come from aligning symbols on neighboring reels, on consecutive reels regardless of position, or if it is a Cluster Pay Slot.

We’ll start with the traditional reel-to-reel slots requiring adjacent symbols, before moving on to the modern and more complex versions.

Reels-Based Paylines on Slots

In the time of classic pokies and one-armed bandits, slot games usually had just one winning line. But, the development of video slots and online slot games has significantly broadened this idea. Today, there are countless options, including the ‘Megaways’ mechanic licensed by Big Time Gaming, offering up to 117,649 various winning combinations.

Select Your Pay Lines

Choose from a wide range of options, from as little as 5 to Megaways slots of 117,000 and beyond. The most popular payline choices are 10, 25, and 50.

Although the number of pay lines may seem impressive, the addition of more reels, rows, and innovative board designs makes it possible to achieve thousands of pay lines.

Note that the number of pay lines doesn’t affect your chances of winning in a slot game. The odds are determined solely by the return to player percentage (RTP).

Extra pay lines simply enhance the slot game’s layout and fun factor – they don’t guarantee a higher potential win on a single spin. Thus, don’t play multi-payline slots aiming to win bigger or more frequently – it doesn’t work like that.

• Starburst, a NetEnt creation, features a 5×3 grid with 10 paylines

All Ways Paylines

Megaways, also known as all-ways paylines, is a recent innovation in online slot gaming. It’s a product and a mechanic that can be licensed, but the broader term for all games using these paylines is ‘All Ways’.

This means that symbols don’t need to be adjacent on the reels. As long as the same symbol is anywhere on each reel, it results in a winning line.

Potential for 117649 winning combinations with Megaways

Considering 6 rows and 7 possible symbol appearances for a ‘full-screen’, it gives 7x7x7x7x7x7 = 117649 possible winning combinations.

Having two or more identical symbols on a reel leads to extra winning line variations. For example, a 6-in-a-row winning symbol with the quantities 1-2-3-2-1, results in 12 winning combinations.

A simple way to understand this is by multiplying – 1x2x3x2x1=12.

So how do Megaways Slots make 117649 possible winning lines?

With the setup of up to 7 symbols on each of the 6 reels, the total possible winning combinations can reach a staggering 117,649. This figure is achieved by multiplying the possible symbol occurrences on each reel, so the calculation is 7x7x7x7x7x7 = 117,649.

Cluster Pays™ Slots

We’re exploring cluster pays™ slot mechanics, where a ‘cluster’ of symbols triggers base game wins.

These slot games typically feature boards with hundreds of squares instead of standard reels and rows. A 6 x 5 board, dropping 30 symbols, is common.

To win, you need a cluster of 5 or more identical symbols. The larger the cluster, the higher the multiplier applied to the stake, increasing the win amount.

This can work in one of two ways:

Adjacent Clusters

In neighboring clusters, victory is attained when a certain number of symbols are grouped adjacently. For instance, the Sugar Rush from Pragmatic Play game uses a 7×7 board. Here, a cluster of 5 adjacent symbols results in a win.

Clusters Anywhere

Clusters anywhere means that symbols can be placed randomly on the board to win, without being adjacent. For instance, in the Gate of Olympus game, a win is triggered by at least 8 identical symbols. The winning symbols then disappear and are replaced, potentially leading to more wins with multipliers.

The Sweet Bonanza slot game from Pragmatic Play is a popular example of this concept, due to its standard board setup.

Slot Machine Volatility

Simply put, volatility (also known as variance) describes the behaviour of a slot game. Online slots can have low, medium or high volatility. Low volatility slots will pay out small amounts frequently. The terms of maximum win is they happen less often with high volatility slots. And medium volatility cuts right through the middle.

With volatility, there is no better or worse kind. It all depends on what you expect from your gameplay – whether you’re looking to earn a couple of extra bucks with constant payouts or you’d rather hit it big on a lucky spin.

Bonus Rounds And In-Game Features

The latest online slots are all about the bonus features, commonly:

• Wild symbol – Wild symbols are a special game character that substitutes for regular symbols to complete a winning combination.
• Scatter symbol – a special game character that triggers the bonus game and often awards instant cash prizes.
• Multiplier – used to multiply the amount of a winning combination. It can be as high as 10x or more.
• Bonus game – the highlight of casino slots, where you can benefit more from wilds, scatters and multipliers. The riches bonus game is often a free spins round but can also be a pick-and-click game or some other special feature.

Special Symbols

Unique icons in online slot games can be a player’s best friend. They provide features that can greatly enhance your odds of winning, such as wilds, scatters, multipliers, and free spins. Wilds are special icons that help create winning combinations by replacing other symbols on the reels. Scatters trigger bonus games or free spins, depending on the number you land on the reels. Multipliers boost the total win of a spin, while free spins enable more wins without reducing your funds. Understanding the power of these unique icons can significantly improve your slot game experience.

Symbols for Free Spins

Free spins are an excellent way to unlock higher rewards in online slot games. To get these free spins, players need to watch for free spin symbols that appear randomly. These symbols come in different forms, often related to the game’s theme, and offer free opportunities to potentially win a payout. Most slot games also have special features like bonuses or mini-games, which provide opportunities to increase your winnings or trigger free spins. The characteristics of these features vary depending on the game.

Scatter Symbols

In slot games, scatter icons are valuable symbols that can offer various rewards to players. They can appear in many forms, and when several show up, they may trigger special features of the slot game. Depending on the game, these scatter icons can initiate bonus spins, multipliers, or mini-games like ‘choose-a-prize,’ where players can win credits. Even without the correct scatter icon combination to activate these bonuses, players can still benefit as scatter icons can often provide wins even when they don’t appear on active pay lines. Whether a beginner or an experienced player, understanding scatter icons can greatly improve your slot gaming experience.

Bonus

Online slot games offer various bonus icons and features to enhance your gaming experience. These unique symbols can trigger bonus features, providing extra spins or bonus cash. These can increase your chances of winning, offering features such as bonus mini-games, multipliers, rounds, and jackpots. So, while playing online slots, watch out for these bonus icons and features, as they can lead to larger wins than expected!

Wilds

Untamed elements are a common and powerful feature of online slot games, helping you secure big wins. These Wild symbols act as substitutes, allowing players to create winning combinations. There are several types of Wilds, including Sticky, Walking, Expanding, and Stacked Wild symbols. Sticky Wilds stay in place while the rest of the reels spin, and Walking Wilds move horizontally across the reels until they drop off either side of the screen. Expanding Wilds can stretch, usually vertically but potentially in any direction, to cover their respective reels and rows when they contribute to a win. Stacked Wilds fill an entire reel, turning into multiple Wild symbols stacked on top of each other, often combined with multipliers – this adds extra excitement to your gameplay! 

Multipliers

Online slot games often include amplifier symbols. These features can increase players’ gains by a set amplifier value, ranging from 2x to 500x. The size of the amplifier symbol dictates the value.

Some amplifier symbols may require landing a specific number of symbols in one spin to qualify for an amplifier bonus. It’s crucial to fully understand the game’s layout and instructions before playing to increase the odds of getting amplifiers with each spin.

Types of Slots

The variety of online slot games is immense, with different shapes, sizes, styles, and types. If you’re a regular slot player, you might have your favorites, but exploring and understanding other types can be interesting.

Reel-Based Slot Games

Modern slot games are not limited to the reel format. Unlike old-school fruit machines, which typically had three reels and one win line, plus two more visible lines, today’s versions offer a wide variety.

While 3-reel slots are still prevalent, you can also find ones with 4, 5, 6, 7, and sometimes even more reels.

3 Reels Slots

Playing a 3-reel slot game allows you to match three identical symbols on one line. These games typically have a 3×3 grid, with three lines and three reels. This layout usually offers five chances to win – the three horizontal lines and two diagonals from left to right.

Usually, you need three identical symbols to win, but there can be exceptions. For instance, for high-value symbols, sometimes only two are needed on a winning line.

4 Reels

• Big Time Gaming’s “Donuts” game is a classic example of a simple 4-reel slot.

A 4 Reel slot includes an extra reel, providing more winning symbols and potentially higher multipliers for a four-in-a-row win.

These 4 Reel slots are sometimes called 4×3, representing 4 Reels and 3 Rows.

The addition of the fourth reel increases the possible pay lines. Depending on the slot’s setup, the previous five win lines could grow to 10, 15, or even 20, giving players more opportunities to secure four reel wins.

5 reels

• Big Bass Bonanza is a slot game with 5 spinning wheels

Considering the 3-row structure, 5-reel slots are often represented as 5 x 3, indicating five reels and three rows.

The inclusion of an extra reel increases the possibility for more winning lines, typically not exceeding 50 unless an ‘all-ways’ or ‘megaways’ format is used.

The result is usually between 10 – 50 pay lines, with 25 being the most frequent. However, using all-ways winning where symbols are not necessarily directly connected, it’s possible to achieve 243, 1024, and even more depending on the number of rows in the game. Still, some slots might have 243, 1024, or even 16807 pay lines.

6 Reels or More

• Slots with more than 6 reels are available, including the 6-reel buffalo blitz by PlayTech

A variety of 6 Reel slot games are available, offering 6 consecutive winning opportunities with potentially high returns. However, this usually means giving up many small wins for three consecutive matches and often requires at least four free spins or scatter awards to trigger bonus features.

This also increases the number of possible pay lines, with six reels being the most commonly used layout for Megaways slots.

Slot Game Themes

The variety of slot game themes is endless, encompassing different individual motifs, combinations, and unique themes.

Egyptian Themed Slots

The fascination of Ancient Egypt has always captivated people, with its rich mythology. Digital slot games inspired by this era offer a virtual journey into the world of Ancient Egyptian gods, temples, hieroglyphs, and the legendary Great Pyramid of Giza. These games, themed around Ancient Egypt, tell stories through their vibrant visuals and dynamic audio effects, recreating the atmosphere of Ancient Egyptian civilizations. Embark on a journey with the Ancient Egyptians, traveling through their historic tombs, mythical cities, and vast deserts filled with unimaginable wealth. Engage in unique adventures and discover rewards hidden in the sands of time. Ancient Egypt-inspired slot games promise to provide thrilling entertainment as you explore the mysteries of Ancient Egypt!

Viking/Norse Themed Slots

Viking/Norse themed online slots have fascinated players worldwide. These Viking-inspired slots combine vivid visuals with thrilling gameplay, immersing you in a mythical Viking world. The bonus features keep you engaged, awaiting Viking victories, while contemporary mechanics prevent monotony. The themes range from famous Viking wars and legends to discoveries, accompanied by a remarkable soundtrack that enhances every spin. Start your journey with the Vikings today for a unique and rewarding gaming experience.

Horror Theme Slots

Horror-themed online slots offer a unique gaming experience. These thrilling games transport players to a frightening world without leaving their homes. Horror fans will enjoy encountering scary themes and intriguing characters inspired by a variety of iconic films, from cult classics to modern masterpieces. Some of these spooky online slot games use innovative technology to immerse players in the story and increase the suspense. Regardless of whether you’re a horror fan or not, these exciting Slot Games provide a gripping experience that keeps all players on edge.

Asian Inspired Slots

Asian-inspired online slots offer a unique way to discover the mystery and charm of the East from the comfort of your home. These games cleverly mix traditional Asian themes with modern game mechanics, creating an engaging gaming atmosphere for all players. Whether you’re playing for fun or aiming for big wins, Asian-inspired online slots offer a truly unique gaming experience with plenty of opportunities to win. Many also feature attractive bonus games, progressive jackpots, and innovative game features – there’s something for everyone! With Asian-inspired online slots, players can explore a world full of colorful graphics – start your journey today!

Cinematic Themed Slots

Online slot games with cinematic themes have been around for a while, offering players a virtual Las Vegas experience on their handheld devices. These games are designed with popular film franchises in mind, providing captivating graphics and interesting themes. Famous films like The Godfather, Scarface, and Terminator offer classic titles that attract new players and keep the interest of experienced ones. With creative bonus rounds ranging from free spins to extra wild symbols, cinematic-themed slots are guaranteed to keep all players engaged and entertained. There’s something for everyone to enjoy in the cinematic theme!

Music-Themed Slots

Music-themed slot games have become increasingly popular among online casino players due to the significant role music plays in many people’s lives. No matter your experience level, these games provide an outstanding gaming experience, featuring melodies from your favorite artists or music genres. They often boast large jackpots, bonus features, free spins, and generous payouts, enhancing the excitement of the game. The blend of art and chance in these music-themed slots make them an appealing and potentially profitable choice for anyone trying their luck.

Adventure Theme Slots

Online slot games inspired by adventure offer a unique experience, combining the thrill of exploration with the chance of big wins. Whether you prefer fantasy or reality-based themes, these slots offer a break from daily routine by immersing players in exciting stories and environments. Explorer themed slots can range from historical epics to futuristic scenarios, all revealed as players climb the slot’s prize ladder. So, if you’re looking for a thrill, why not try Explorer Themed online slot games today? Your next spin could be your big win!

Alien and Space-Themed Slot Games

Alien and space-themed slot games have quickly become some of the most popular online games. Their engaging graphics and interactive features immerse players into a different universe. These games often incorporate elements from classic stories like Alien or Star Wars, combining them with the fun structure of a slot game. They offer a mix of adventure, suspense, and entertainment, making them a hit with online gamers. Whether you’re looking for a unique gaming experience or just some casual fun, these alien and space-themed slots cater to everyone!

Fruit Themed Slot Games

Online slot games with a fruit theme provide a fun and easy way to pass your leisure time. These fruit-themed slots feature various exciting game mechanics and bonus opportunities, presenting a traditional set of fruit symbols on the reels. These slot machines usually offer multiple payout lines, free spins, wilds, and many opportunities for big wins, all with vibrant graphics and smooth animations. Try your luck today and you might win some juicy rewards!

Irish-Themed Slots

Irish-themed online slots offer an exciting and authentic gaming experience that immerses players in Irish culture. These slots feature symbols and characters associated with Ireland, taking players on a journey to the Emerald Isle. Besides the fun, the chance of significant winnings makes it even more appealing. These games skillfully merge iconic Irish elements and tales with modern betting mechanics and features. So, while enjoying impressive paylines and high-quality graphics, players may also come across pots of gold or shamrocks. Experience the charm of Ireland from the comfort of your home today.

Top Real Money UK Slots

There is so much fun playing free slots, and nothing like real money slots embodies the essence of casino gambling. You get to enjoy the gameplay and the thrill of sweet victory when you rake in those cash returns.

Real money slots are available in different genres and are feature-packed. Also, if you’re looking to play a progressive jackpot, you can only do so when you play for real money.

Another unique advantage of these games is that you can benefit from lucrative online casino bonuses that boost your bankroll and allow you to enjoy more games for longer. Wagering contributions and other restrictions apply, but we will discuss those further down.

Low Wagering Slot Sites 

Low wagering conditions of every bonus casino are structured to allow players to enjoy multiple gambling games. They are flexible and can adapt to any gambling style that fits the player’s preference. If you’re starting, these best slots sites offer a great introduction to the gambling industry and stop you from losing so much money. 

A major benefit of low wagering sites is they make it easy for you to withdraw money. This is possible by allowing players to convert their casino welcome bonuses into real money. You can also enjoy the platform for purely entertainment and not worry about the rigours of professional sports betting. Here are the best low wagering slot sites UK to choose from:

• No Bonus Casino – Guaranteed 10% Cashback
• Virgin Games – Play $10, Get 30 Free Spins
• Rainbow Riches – $10, Get 30 Free Spins
• Pokerstars – Deposit $10, Get 100 Free Spins
• Grosvenor Casino – Deposit $29, Play with $50

Free Slots For Fun

Free slots are just as numerous as real money ones, and the best online slot selection sites offer these games for recreational players.

With free play slots, you don’t have to place real wagers before you begin spinning the reels on your favourite titles. Some sites will even grant you access without registration.

With no internet connection, you can enjoy them in instant play or download free games and revel in unlimited gaming whenever you want. Playing free games is also a great way to get new slots experience for a test spin before you start placing bets.

How to Win on Slots: Tips for Real Money Play

Winning on slots is a piece of cake once you understand how to navigate the game. Here are the best tips to get started:

Choose Your Slots Carefully

You need to understand that no two slot machines are similar. Each one comes with different themes, soundtracks and other unique features. Essentially, they have different Return to Player (RTP) rates, so it’s important to find that out at the best online casinos before you start playing.

Practice with Free Games

Before playing slots for real money, consider playing free slot machines. These games offer peak excitement and allow you to learn how the games work before wagering. 

Study the Pay Table

Each slot machine comes with its unique pay table. This shows what each symbol is worth and which ones are most lucrative. 

Stick to Your Budget

It’s vital to set a budget before you start playing. This ensures you know when to call it quits without going on a losing streak. You should only make a line bet amount you’re willing to lose. This also applies if you’re using only bonus funds. If you feel yourself losing control, you can visit BeGambleAware.org for help.

Aim for smaller jackpots

Games with smaller jackpots have more frequent payouts. This makes them ideal if you’re looking for consistent wins and not chasing big bucks. 

10 Most Popular Online Slot Games

Everybody loves slots because they are easy to learn. They do not require any prior knowledge before you can hit a win. Fortunately, online slot games are also an awesome way to win big and have fun simultaneously. Here are the top 10 popular online slot games of all time to choose from:

Sweet Bonanza 

This is a high variance game with an RTP of 96.48%. It has awesome graphics, and you can win as much as 21,175x your original wager. The minimum bet is placed at $0.02, while the maximum is $100.

Gonzo’s Quest Megaways 

Gonzo’s quest comes with a 96% RTP and an x21,000 max win. The game combines traditional and innovative elements to give players a unique gameplay. Every casino player should explore this particular game. 

Primate King 

Primate King is a medium variance slot with a bet range of 0.2 to 20.00 per spin. You also have a chance to win x3,800 of your stake. This is possible with a perfect combination of spins and multipliers on Primate Smash.

Legacy of Dead

This highly volatile Play’n Go game has a maximum spins limit of 25,000 times your stake in the free spins feature. You also get up to 9 special expanding symbols, increasing your odds of winning. The 5 reel game is designed with 10 paylines with an ancient Egyptian theme. 

Big bass Bonanza

Big Bass Bonanza was released by Pragmatic Play in 2020. This game features five reels, three rows and ten paylines with a rating of 3.7/5. You can win by catching three identical symbols on one of the 10 paylines. The game has a fishy theme, a strumming soundtrack and a lot of feel-good vibes. 

Gonzo’s Quest

Swedish company NetEnt provides starring Gonzalo Pizarro, the game’s software, and you get access to impressive 3D graphics that enrich your gameplay. It also comes with a high max payout and great winning line multipliers. The slot game follows the Gonzo the conquistador story. 

Wolf Gold 

Wolf Gold comes with 5 reels, 3 rows and 25 pay lines. It also has a bet minimum of $0.25 and a maximum bet of $125. A key feature is the slot gold bonus round which gets triggered through the Wolf Gold’s money symbol, i.e. a full moon. 

Bonanza

Bonanza offers 6 reels, 7 rows and 117, 649 ways to win on each play. The game is compatible with multiple devices with a minimum bet of $0.20 and a maximum of $20. Once you’ve made your new wager, the reels can be spun manually or via the auto-play feature.

Book of Dead

This is a high variance game, meaning most wins will come in small sizes. However, you can get the bigger wins in the free spins feature as the special expanding feature makes it easier to fill the reels with the same symbol.

Starburst 

The legendary Starburst has a high betting range and a stylish theme to give you a memorable gambling experience. The true casino 5 reel, 3 row and 10 payline classic game is also compatible with multiple devices so that you can play it anywhere. Wilds and respins are some bonus features. 

Best Penny Slot Machines to Play at the Casino 

Penny slot casinos are the cornerstone of modern gambling. Don’t be carried away by the name “penny.” These slots are not cheap as they are made to sound. Some players also thought that these slots had low payouts and costs. This is not exactly true. Here’s a top list of the best penny slots you can play right now:

• Golden Colts
• Blaze of Ra
• Double Tigers
• Book of Dead
• Temple of TUT
• Pirate’s Charm
• Divine Fortune
• Valley of the gods
• Gold King
• Wild Wheel Big Money

Types of Slot Machines

When you think about the abundant world of online slots, you’d wonder if they were all identical. In which case, it’d be quite boring to have to play these games when they’re faced with so much competition.

Slots are amazing because even though you simply spin the reels on every game, titles differ in theme, style of gameplay, features and design elements.

They have been classified into separate categories to make it easier to browse your favourite games. We will explain the key types in the following sections.

Classic slots

Classic online slot machine represent what these games looked like back in the day. These usually have a standard 3×3 grid setup and only a few paylines (no more than 9). Classics also offer limited winning combinations and little or no bonus features.

Although it is far from what new slots look like today, these games have an undeniable appeal.

The pure, undiluted gameplay is what made many players fall in love with slots in the first place. And classic slot game selections are indispensable at the best UK slot sites. Some player favourites are:

• Couch Potato
• Jurassic Jackpot
• Triple Magic
• Super Nudge 6000
• Break da Bank
• Triple Diamond
• Moon Princess
• Monopoly Paradise Mansion
• Big Catch Slot

Video Slots

The most popular slots online are video slots. They’ve got 5 or more reels with multiple paylines and modern HD graphics. A standout feature of this category is that the games aren’t just limited to the symbols and reel setup but also include compelling storylines and characters.

Video slots can certainly allow the creativity of a particular developer to shine. Of course, there are no limits to the number of wilds, scatters, multipliers, free spins, and other double double bonus features these games can offer.

Some of the best video slot games are:

• Gonzo’s Quest
• Immortal Romance
• Thunderstruck II
• Book of Dead
• Cleopatra
• Wheel of Fortune
• Game of Thrones

Jackpot Slots

Several of the top UK online slots are jackpot slots, e.g. Megabucks. These offer the chance to win huge amounts of money on a lucky spin. These prizes are fixed, so you already know how much you can win if you hit the pot.

You will have to trigger a jackpot by landing a specific combination of symbols or playing a bonus game. It isn’t hard to find these games as many slots feature one or more huge jackpot prizes, including slots like:

• Wacky races
• Mustang Gold
• Star Joker
• Wolf Gold
• Crazy Time

Progressive Jackpots

While regular jackpots are fixed, progressives like Playtech’s Green Lantern accumulate by taking a small portion of every amount wagered on a spin. So the prize continues growing as players keep on playing. 

That’s why progressives are called millionaire-makers. These amounts aren’t just huge but life-changing. And the best part is that you don’t have to make the max bet. You can win even with minimum deposits and the smallest stakes.

Microgaming’s Mega Moolah remains the top progressive jackpot slot with a record €18,915,872.81 payout. Other standout progressive slots include:

• Mega Fortune
• Hall of gods
• Major Millions
• Arabian Nights
• Age of the Gods

Fruit Machines

Fruit machines are some of the most common slots in the UK. Their name comes from the fact that most symbols on the reels are fruit icons, alongside bells, 7s, and bar symbols.

They are characterized by a hold and nudge feature. You can hold one or more reels in place while others spin, and you can also nudge a reel with a single move rotation after spinning.

These features help increase your chances to win at slot, and it’s worth noting that fruit machines often come with multiple jackpot prizes.

The top games available in this category are:

• Fruit Fiesta
• Booming 7
• Fruit shop
• Fruits of Neon
• Mega Flip
• Fruit Zen
• Fruit Mania

3D Slots

These online slot games pack a heavy punch as they feature the latest casino UK game technology on the market. From crisp, crystal clear graphics to pop-up animations and blockbuster soundtracks, 3D slots provide a different kind of immersive gameplay – like video slots but with a cinematic level upgrade.

Here are the top 3D slots to play at the moment:

• Jungle Jim El Dorado
• Vikings go to Hell
• EggOMatic
• Flaming Fox
• Finn and the Swirly Spin
• Safar Sam
• Tiger’s Claw

Video Poker

These gaming machines are not quite slots, but they look like them from a distance. They are a cross between landbased casinos’ slot machines and a poker card game – imagine playing poker inside a slot machine. Just like online blackjack, pokies give players the thrill of quality online gambling.

They generally require more strategy than slots and have more detailed gameplay rules. At the same time, poker sites games are largely entertaining and even offer higher payback percentages. For Las Vegas slots fans looking for a bit of a challenge, chances are you’ll have a blast with this online poker gaming machine.

Common video poker variants are:

• Jacks or Better
• Aces & Faces
• Deuces Wild
• Joker Poker
• Bonus Poker

Branded Slot Games

These slots result from the collaboration between game developers and major entertainment brands. They bring famous movies, TV shows, or musicians into the slot gaming world, giving fans a unique interpretation of familiar themes.

Megaways Slot Games

Megaways slot games offer up to 117,649 ways to win. The ever-changing symbol arrangement on the reels ensures an engaging and thrilling gaming experience.

Casino Bonuses and Free Spins on Slots

These days, every online casino site offers welcome bonus offers to new players to make them join the site. You often get one bonus offer per player, but some operators will extend these rewards to the 2nd deposit, 3rd deposit and even 4th deposit. Not to mention continuous ongoing promotions for players who keep coming back. 

Free spins are one such grand ivy casino bonus specific to slots. They allow you to spin the base game reels several times, free of charge. The best online slots UK casinos will offer as many as 200 or more free spins on your first deposit. Some sites will also provide wager free casino offers in the form of no deposit bonuses. The slots casino may offer bonus spins on selected games, or you may be given a free hand to play your preferred titles.

Although this slots bonus is a major player magnet, just like any other casino promos, t & c apply.

Bonus wagering requirements are the most prominent conditions because you have to fulfil them before receiving a payout on your winnings. Consider you receive a bonus of £100 and are subject to 35x wagering the total bonus amount. You would have to bet £3500 to withdraw your winnings. Game weighting applies in cases where you end up with wagering requirements from a welcome bonus.

The wagering requirement can be between 20x and 50x of your free spins winnings, but a 30x wagering bonus or lower is recommended to play responsibly.

You also get the bonus valid for a specific time frame (usually 7 days, otherwise, any unused bonus shall be removed). The bonus funds contribute towards wagering, so the latter is valid until the bonus funds expire.

In addition, you will find other restrictions like a max bonus bet to comply with. At montycasinos.com, we advise players to read the bonus T&C before accepting any welcome offer.

Fairness of Slot Machine Outcomes

Casino online slots like Buffalo Blitz run on a random number generator (RNG) software, which determines game outcomes. The RNG ensures that every spin’s result completely depends on chance.

To verify that bovada casino RNGs work as they are supposed to without any external manipulation, they have to be tested by reliable audit services like eCOGRA. Only the top online licensed sites have a seal of approval from eCOGRA. These top slot casinos are regulated by the UK Gambling Commission and are trustworthy and reliable, so you can also expect fair play from their games. Operators like Paddy Power and Jackpot Village have multiple licenses from the UKGC and the MGA (Malta Gaming Authority).

Online Slots For Smartphones and Tablets

Playing your favourite slot games has never been easier, thanks to the mobile gaming rave in recent years. Game developers and casino operators are taking a mobile-first approach, which has led to the proliferation of mobile casinos, mobile casino games, and live dealer options.

As more games are developed in HTML5 (a coding platform that allows online and mobile accessibility), the top mobile slots play seamlessly on the compact screens of smartphones and tablets.

With Android, iOS, or Windows portable devices, you’ll also be able to download dedicated mobile casino apps directly onto your phone or tablet for even greater convenience.

Best Online Slot Game Manufacturers

Fantastic games have got to have fantastic brains behind them, and the slot industry is teeming with talented and innovative providers, e.g. Red Tiger.

Software provider	Origin	Launch Year	Popular slots
Microgaming	Isle of Man	1994	Mega Moolah, Game of Thrones, Immortal Romance
NetEnt	Sweden	1996	Gonzo’s Quest, Starburst, Mega Fortune
Playtech	Estonia	1999	Age of the Gods, top Gun, Desert Treasure
Novomatic	Austria	1980	Lord of the Ocean, Sizzling Hot, Book of Ra
Play ‘N GO	Sweden	2007	Book of Dead, Mystery Joker, Reactoonz
Yggdrasil	Sweden	2013	Vikings Go Wild, Jokerizer, Holmes and the Stolen Stones
Betsoft	Malta	2006	The Slotfather, Good Girl Bad Girl, Mr. Vegas

Besides slots, these providers also have several table games and live casino products available at the top slots sites UK.

New Slot Games Online 

The gambling industry is never stagnant. Most times, online casino experience an influx of slot titles daily. Numerous gaming studios work hard to ensure customers are always satisfied. Moreover, few things are better than playing a new slot game on your device from any location. Here are the best new slot games to play:

• Reel of Riches
• Down the Rails
• Buffalo Toro
• Jade Shuriken
• Octobeer Fortunes
• Gates of Troy
• Happy Hooves
• Bee Hive Bonanza
• Bison Rising Megaways
• Striking Hot 5
• Wild Link Zeus

Advantages and Disadvantages of Online Slots Compared to Other Casino Games 

Here are the advantages of online slots compared to other casino games:

• Extensive Variety. Online slots offer players multiple games with unique features. This is a step ahead of other games which have limited gaming availability.
• Minimum Wager Requirements. Slot machines let players access their favourite games with fees as low as $1. On the other hand, some casino games have their lowest bets set at $5 or $10.
• Excellent RTP. Online slots offer RTP rates that go as high as 99%, which means a 1% house edge. However, you can have other casino games that have a house edge as high as 5%. 

Despite all its perks, there are some drawbacks to playing online slots. These include:

• Winning depends on luck.
• Online slots are games of chance and depend largely on luck. On the other hand, you can learn strategies and techniques to win other casino games.

Our Conclusion

Slot machines give you access to premium gambling fun with quality features and multiple plays to win. Moreover, online slots come in different shapes and sizes. While this diversity is its salient point, slot players always look for the most exciting titles. montycasinos.com highlights the best games and the subtleties and details of what makes a top slot.

With slots, one size doesn’t fit all. Whether classic machines, video slots or jackpot games, each offers something different for players to enjoy. You can use this best online slots UK guide to choosing the best game. Once you sign up and make your wager, you’ll be guaranteed to have fun and win money simultaneously. Nonetheless, the best online slots UK share one thing in common – they are loads of fun to play!

Expert’s Opinion

From my years of experience in the online casino industry, I can confidently say that it’s hard to beat the thrill of slot gameplay. It’s ironic since slots have the most basic rules out of all online casino games. Our expert casino reviews are based on an in-depth analysis of multiple gambling features. These include the game variety, types of bonuses, payout options and moneybookers, e.g. Skrill, Avalanche, Paypal, and Neteller.

However, they are good, especially when you play with a free spins bonus at the top-rated online slot sites. Like with real money slots in the united states, I get a kick out of trying out free games. The best things in life are free, including the best slot experiences.

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