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Play Online Slots On Slot Boss

Here at Slot Boss, we have a wide range of slots and casino games that can be played with the brilliant bonuses available. Our most recent slot machine to be added is the Slingo Casino slots. Slingo combines slots and bingo to create an innovative style of slot machine that is one of the most unique games on Slot Boss. If you’re looking to play Slingo Slots, we recommend checking out Monopoly Slingo and Rainbow Riches Slingo which are some of our most popular slot games.

We have plenty of slots online available for players covering a range of themes, styles and features which means that as a UK online slots provider we have one of the grandest selections of the best slot games and fruit machines. There are plenty of amazing slots online such as 9 Masks of Fire and Deadwood slot to name but two and even quality wizard slots.

We’re sure you will find something that catches your eye, whether that would be the popular Egyptian theme where Cleopatra slot is our most popular game, or something else like Irish, Fantasy or our retro slots.

You Don't Need To Be An Expert To Play Online Slots

Online slots have become more creative with more immersive and engaging bonus features and in-game modifiers, sure, but the mechanics remain the same. All slot machines are built using standard reels that spin and land randomly. As soon as you hit the spin button the combinations that the reels land on are completely randomly generated.

If you are new to slots online then you can view our blog content as well as the game information pages on all of our slot games. These are in-depth instruction manuals to give you a better understanding of how to play the slot game you have selected, as well as a description of the bonus games, features and symbols to look out for. Each set of instructions have been written by our casino and slots writers to give you the most valuable information.

What Are Online Slot Machines and How Do They Work?

Online slot machines or online slots are types of real money gambling games with plenty of different themes and features. Firstly you set your stake and then spin the reels to match up symbols on winning paylines to win cash prizes. The reels will stop at random and if they match on a payline you could get rewarded with bonuses features, free spins, multipliers or other forms of prizes.

At Slot Boss we are all about slots, which is why we have some of the best slots online in the UK. Our slots include amazing graphics and new bonus features. Each slot game has different features, a wide variety of bets, a different amount of paylines and a range of different multipliers. They are designed to give each player the best slots experience.

Online Slots UK Glossary

Free Spins

Free Spins are a type of bonus. Free spins do exactly what they suggest, they are rewarded to the player and spin automatically without taking any funds, yet you will be paid all of the winnings. Free spins are usually triggered by landing a set of three specific symbols which can also include scatters. The amount of spins earned depends on the amount of symbols landed. There is also usually an opportunity to retrigger spins to climb further up the winning ladder.


A bonus is a special feature round within the slot game theme. Bonuses come in all shapes, sizes and themes and they can appear at any time. Some slot machines have random bonuses, character-led, free spins, pick me, progressive multiplier and many more different types. To trigger a slots bonus you must line up certain symbols on the reels and are usually wild symbols, scatters and bonus symbols.


Scatter symbols in online slots can substitute for any other symbol on the reels to create a winning combination. They may appear elsewhere on the line but still create a winning combination and trigger a bonus. A scatter pay normally requires three symbols to land, if there are more the slot machine can reward you with higher prizes or jackpots depending on how many scatters land.

Wild Symbol

The wild symbol is important when landing winning combinations on the reels. It has the power to substitute for all symbols to complete winning lines. Lines that wouldn't normally be a winning can be made into one with a wild. Wilds are also high value symbols that appear in different bonus rounds and free spins games. Wilds cannot replace scatter symbols. Check out the paytable for more information on wild symbols because they only appear on certain reels on some slot machines. There are also different types of wilds like expanding and sticky wilds.


Slots volatility describes the behaviour of the slot game. There are different types of volatility such as low, medium and high. Low suggests that the slot game pays out more often in smaller amounts whereas a highly volitile slot like Jammin Jars slot will pay out less often but at higher amounts when it does.


The paytable is within the online slots that you choose. It highlights the symbol values, winning combinations and bonus rounds. Before playing a slots online review the paytable to make sure you know what the game rules are. It will make it more fun when you know what symbols and winning combinations you need to get a prize or bonus round. Alternatively, you can browse our game information pages.

What are the Best Online Slots?

There are three slots that have been widely regarded as the best online slots since their releases and what is good about these three slots is that they all have different themes. Our first slot is the Starburst slot game which brings a traditional gem theme and is widely regarded as the master of the Free Spins bonus round, which our players can read more about in our blog.

Our second slot is the Book of Dead slot which takes a traditional Egyptian slot and improves the graphics, gameplay and bonuses to make Book of Dead our most popular Egyptian themed slot.

The third and final of our Best Online Slots is the Rainbow Riches slot game which is arguably the most well-known slot in history thanks to the numerous variations of the original slot available. Rainbow Riches is an Irish slot with high volatility and a number of bonus rounds, but is especially popular because players can play the game in multiple different ways thanks to the many Barcrest variants such as Rainbow Riches Free Spins.

The quality online slots titles don't stop there because we also have movie-themed games like The Goonies slot, TV show adaptations like Deal or No Deal Megaways and even new live games like Crazy Time.

These are the three most popular UK slot games but that’s not all that we have to offer.

Slot Boss Online Slots: UK Top Picks!

You may have noticed that several spaces in our featured grids have banners saying that they are either exclusive, new, or one of our top picks. This means that this is a game that we recommend you check out this month. These are updated regularly and in our opinion are the best ways to find new UK slot games.

Our top pick going into October 2020 is the Western Gold Megaways slot which is a fantastic game created by iSoftBet, who you may recognise from some of the other top titles on Slot Boss. With the typical conventions of a Megaways slot combined with the brilliance of Respins and multipliers, as well as a potential top win of 12,000x your stake, we view Western Gold Megaways as a slot that is not to be missed!

Can I Play Online Slots On Mobile?

Our players can play any of our fantastic slot games on mobile devices by using any of their internet applications. However, if you’re looking for the best way to play slots on mobile then we would recommend our Android casino app where all of our games are available for players. Just search Slot Boss in the Google Play Store to get started. If you’re looking for all the latest information on mobile casino games be sure to check out our blog where we’ll have all the best online slots available, reasons why players should play on mobile and some surprising statistics regarding our mobile slots players.

I Want To Learn More About Online Slots?

Here at Slot Boss we don’t simply deliver fantastic slots, we analyse them and provide our players with in-depth guides on the greatest bonuses, features and graphics available on site. However, that’s not all. Unsure on how to play a casino game? Not quite sure how an online slot works? We’ve got guides to some of the biggest games in both land and online casinos. Want to know what are the basic rules of Blackjack or how to play Roulette and win? We’ve got the answers in our blog!

What Are The Best Online Slots Features?

There are hundreds of bonus features that make all of our slot machines unique but the question is, what are the best online slots features? There's plenty to choose from such as Megaways slots to jackpot king progressives that come from our jackpot king slots

We also have a special type of game that shouldn't be ignored, which is the Dream Catcher engine. This was originally used for the fantastic Live Dream Catcher game but became a lot more popular when incorporated with the brilliant Monopoly Live.

Finally, another one of our favourite style is the Megaways mechanic. The Megaways mechanic has revolutionized the casino industry after being created by Big Time Gaming, releasing some of the most popular games in recent years with the brilliant Monopoly Megaways and Bonanza Megaways slot. Working with the best slots online we can also bring you the famed Wish Upon A Jackpot sequel Wish Upon A Jackpot Megaways as well as the Gonzo's Quest special edition Gonzo's Quest Megaways.

Want to learn more about Megaways slots? Be sure to check out our blog for all the need to know information about the mechanic and detailed reviews about Rainbow Riches Megaways.

Everything You Need To Know About Slots Online

Online slots are an innovative and modern day answer to traditional slot machines and fruit machines. Originally made famous in Las Vegas and other land-based casinos, this popularity has now been moved online. The main differences between the classic style slots and the online slot machines are the bonus features, in-game modifiers and the reel engines. For example, these days slot games are usually played across 5 reels with a lot more win lines. You'll also see more scatters, wild symbols, bonus symbols and central characters.

In August we saw a number of fantastic slot games released on Slot Boss including another brilliant Rainbow Riches rendition in Rainbow Riches Cluster Magic, which has a plethora of fantastic features that completely changes the complexion of Rainbow Riches and turns the game into a modern-day classic. This is the twelfth Rainbow Riches slot on Slot Boss and in our opinion, it may be the best. Another one of our favourites is Ted Megaways which takes the brilliant online Ted slot and upgrades it with cascading slot reels, massive multipliers and more!

How To Play Online Slots

Online slots gameplay is similar to the physical fruit machines. You choose the amount to play with, how much you'd like to stake and watch as reels spin with the aim of matching the most lucrative symbols. The main difference to traditional fruit machines are the huge number of paylines, bonus features and ways to win. They're becoming more akin to video games.

However, here are a few steps to take when you're thinking about playing one of our slot games. You firstly want to settle on an amount of money you wish to play with and then set each spin. Firstly you must deposit your funds and then choose a slot game you wish to play. Then hit play to spin the reels and watch the game complete a spin. The reels will eventually stop in a random combination. You're aiming to create a matching combination, however, in the latest slot games there are many different ways this can happen with excessive amounts of paylines. Sounds good, right?

What does 'RTP' mean?

'RTP' stands for Return to Player and is a percentage of stakes a game returns to the player, usually over 1 million plays. It's the generally accepted way of measuring how a game will perform. For example, if the RTP is 94% then the game is expected to return 94p of every £1.00 staked over longer periods of play.

RTP can vary between games with some offering more than others. High RTP doesn't necessarily mean big wins as games with lower RTP often have a lot more bonus features etc.

What are paylines?

Paylines are the ways in which you can win. The aim is to match winning symbols across paylines. In old fashion slot machines that's often horizontal and sometimes diagonal. In modern online slot machines there reel sizes are increased. That means there can be thousands of paylines that provide ways of winning. Notably, megaways slots have 117, 649 different ways to win.

Is there a 'best time to play' online slots?

This is a common theory among casino players and without a doubt a myth. Casino slots are based on 'RNG', random number generation, meaning there is no way to tell the outcome of the reels. In the best possible scenario a player could win big on numerous times consecutive spins. Each spin is completely random.

Some games, such as Poker or Blackjack, involve a degree of skill. However they are still a game of luck and chance meaning there is no way to win everytime.

Is there anyway to tell when a slot will 'hit'?

As we know with RNG (Random Number Generation) each spin is completely individual with games giving no signal one when a win is on the horizon. Each has equal chances of a win as the next.

Is there any truth in the theory of 'Beginners Luck?'

Winning for the first time is often a memorable experience which is what makes the beginners luck theory resonate with so many people. With games being based on RNG we know that each game is based on luck for all players every time they play. If 'beginners luck' comes in to play for you it's an added bonus.

What is the difference between progressive and fixed jackpot slots?

With progressive jackpots the total winning sum increases with each spin. As more players spin the reels, the bigger the jackpot will be. A fixed Jackpot, a feature among most slots, is a total jackpot prize that is available to be won

How can I make a deposit at Slot Boss and play slots online?

Depositing has never been easier. We offer multiple ways in which you can deposit such as Visa, Visa Debit, Visa Electron and Mastercard with no fees attached. Slot Boss is also one of the casinos that accept PayPal which is ideal for online payment. If you're new to Slot Boss make sure to take advantage of our welcome offers.

Safer Gaming

Here at Slot Boss, we believe in safety first, so you can set deposit limits in accordance with our Safer Gambling Policy. At Slot Boss, we are passionate about bringing our customers a safe and enjoyable user experience right through from your first deposit to your withdrawal. As part of our safer Gambling measures, it is vital that we help you manage your gambling to ensure Slot Boss remains a safe environment. 18+ begambleaware.org.

Welcome Offer

Learn more about our welcome offer by clicking the link today here at Slot Boss.