Play Online Slots: UK 2017 Guide

Feel the thrill as you watch the reels spin! Tremendously popular amongst casino fans of all ages, online slots are now available in the thousands for players to enjoy.

Join the online Slots community by signing up to one of our recommended online Slots casinos below and securing your CasinoGuide exclusive bonus today!

Online Slots: Discover the Fun!

play online slots

With online Slots, the choice of games you can play is immense.

The choice of online Slots games can be a little daunting due to the vast amount of options available to you. But you needn’t feel apprehensive – we have done the hard work for you!

Simply pick from the above list of online Slots sites (UK Gambling Commission approved), grab your welcome bonus, and treat yourself to some quality time at a fantastic Slots casino UK players love to play at!

If you aren't yet ready to commit money to playing online Slots, you can try our no deposit bonus Slots UK list.

Online Slots with bonus offers

online slots bonus offers

Playing Slots online, you will find yourself being offered many different kinds of bonuses.

If what you’re after is online Slots with bonuses, you have come to the right place. All of the recommended casinos above come with a highly generous Slots bonus - and some of them are even exclusive to CasinoGuide!

When choosing a Slots bonus, UK players have the unique advantage of deciding between a vast number of highly reputable online casinos like those listed above. Find the best Slots bonus UK casinos have to offer, right here, right now.

Best Online Slots games with bonus included

Some casino websites provide you with a large Slots bonus so that you can get a feel for using their site/app, and for which kinds of Slots games you like to play the most.

Most online Slots sites will allow you to use these bonuses on whichever Slots games you choose, but some will limit you to a preordained selection of games, designed to give you a good overview of the different options they provide.

Of course, once you start playing online Slots for real money, the entire library of games will become available to you.

Examples of Online Slots Wins

Here is a video of a YouTube user and online Slots streamer, who managed to hit a massive lucky streak, netting himself over £500 of winnings in less than five minutes!

The game being played is 'Elements: The Awakening' - a NetEnt casino Slots game that can be played on at least two of the recommended casinos listed above.

Get in on the action with your Betfair Casino bonuses or Bet-At-Home sign up offer today!

If that isn't enough to inspire you, watch the same player win nearly £250, again in under five minutes!

The game being played is 'The Finer Reels Of Life' - a Microgaming casino Slots game.

Online Slots welcome bonus

There are multiple different types of Slots bonus (including the NetEnt casino bonus), and we will attempt to cover them all briefly here. The first, and most common, is the Slots welcome bonus. This is typically a small token gesture from the Slots websites to say thank you for joining their casino.

This is also sometimes known as a ‘Slots signup bonus’. Online casinos are hugely competitive, and will make almost any gesture in order to guarantee some level of customer loyalty from you. That is why they can afford to be so generous with their bonuses.

You can also expect to be rewarded for playing Slots online on your mobile phone - usually when you download casino apps after signing up, this will get you an additional bonus. Android casino slots are the gift that keeps on giving!

Online Slots With Free Spins

As well as the Slots welcome bonus, you will also find many Slots sites with free spins. Typically, this will be offered as a sweetener to Slots with sign up bonus offers – for example ‘£50 welcome bonus and 100 free spins’.

Playing Slots with free spins is a very effective way to welcome a new player into the online Slots experience; it allows you to enjoy the thrill of playing Slots online, with none of the risk. Check out our exclusive free spins casino offers to claim yours!

Online Slots Bonus Codes

Used more to tempt existing online Slots players back in, Slots bonus codes are typically sent directly to the inbox of the email account you specify when first signing up. This is quite common with Playtech Slots in particular.

The value of each video slots bonus code varies greatly – for example if you have been a regular player over a long period of time, the online casino will likely reward you with more lucrative online Slots bonus codes.

If you aren’t yet signed up, you can still get your bonus – but you won’t need any Slots bonus codes. Just head to the top of the page, pick the casino you like the look of, and click ‘Play Now’. Your bonus should be automatically applied once you sign up.

Online Slots with deposit bonus

slots deposit bonus UK

By far the most lucrative type of bonus is the online casino deposit bonus.

This is where the real money is! Online casinos love it when you make a deposit as it shows that you are ready and willing to start playing for real. If you are keen on getting the biggest bang for your buck, then an online Slots deposit bonus is what you need.

At CasinoGuide we pride ourselves on listing the online casinos offering only the very best Slots deposit bonus to their new customers. We display the biggest Slots deposit bonus UK casinos have to offer, so that you can get the most out of your online Slots experience.

How do I claim my Slots deposit bonus?

It couldn’t be easier. We’ve done all of the hard work for you by finding the best Slots with deposit bonus offers, now all you need to do is choose one!

At the top of the page is our list of the best casinos for online Slots – you can compare and contrast them by their reviews, mobile compatibility, and of course, the Slots bonus amount.

The best Online Slots sites UK casinos have to offer

When playing at a Slots casino, UK players have the best of all worlds. A veritable vista of signup bonuses, deposit bonuses, free spins, and much more await you behind the doors of the Slots websites listed above.

Not only that, but if you choose to play Microgaming Slots games, you can enjoy spectacular graphics and crystal clear sound while playing online Slots games themed around your favourite films and TV shows!

What is more, you can play with total peace of mind; all of our recommended Slots online casinos are fully licensed by the Gambling Commission – the UK Government regulator for every Slots casino UK residents play at.

Choosing between Slots websites

We’re here to make your gambling life easier – which is why we provide thorough reviews, compatibility information, and exclusive bonuses on all of the Slots websites we list.

Playing Slots online is supposed to be a fun and simple distraction from everyday life; it’s not complicated or tricky, nor does it require hours of practice. Just click (or tap, if you’re on mobile), and play! Some of the best Slots websites have included Slots in their gamification efforts - rewarding you with extra points, credits, free spins and the like. Check out our Kaboo Casino review to read about one of the industry forerunners in this regard.

If you're feeling adventurous and futuristic, you can also try Virtual Reality Casino Slots games - coming soon to an online Slots casino near you!

Try Online Slots for Free

If you aren't quite sure that playing Slots online is your pastime of choice, remember you can always 'try before you buy'!

Here on CasinoGuide you can play free Slots, along with a host of other free online casino games. And once you're ready, just take your pick from our recommended online casinos to play for real.

Play Slots for real money!

Over a hundred years since his invention first hit the saloons of San Francisco, Charles Fey’s Slots legacy continues to live on like he could have never imagined.

The prophecies that were preached by the San Francisco saloon and restaurant owners have indeed come true, as Slots games continue to reel in money for numerous kinds of Slots casino – UK and worldwide, online and offline.

This is perhaps in light of the fact that the innovative invention has since been adapted to suit a whole new market of gamblers, those who play Slots for real money online! 

Is it legal to play Slots online for real money?

If you are in the UK, and are over 18 years of age, and have either a credit card or e-wallet with which to top up your balance, then yes - you can play Slots for real money online. Gambling in the UK is legal and licensed by a regulatory body called the Gambling Commission, which ensures fairness and transparency in the industry.

Some other countries in the world do not allow online gambling of this nature however, so if you are outside the UK it is always wise to double-check the local laws to ensure you are able to play legally.

Online Slots: how to win

  1. Contrary to popular belief, if an online Slots machine gives you a big payout you shouldn’t rush away; it might pay out again.
  2. Learn about and take a chance on Progressive Jackpots for potentially huge wins!
  3. Always know your limits, and know when to walk away! Play for fun, not for profit, and you’re a winner every time.
  4. Slot machines use random number generators in order to strike symbols. If you find a way of cracking the game and securing a jackpot in your favour, you may be some kind of genius!

Online Slots games UK players can choose from

A vast number of Slots websites exist nowadays, all boasting their own huge libraries of online Slots games, with themes ranging from the classic fruits and bars, to movie themed versions, and more.

However, there is more to knowing which Slots games to play than simply picking the theme. When selecting the right type of Slots games, UK players can have the possibility of winning small payouts or larger payouts depending on which game type they choose. The variations of Slots online include:

Classic Online Slots

Love classic 3-reeled online Slots games?  If your answer is yes, then you’re definitely in for a fun treat as nowadays many retro fruit and 7s Slots games can be found at the online casinos listed above.

Due to the fact that these were the first to be introduced to the online gaming scene, there are presently quite a number of classic online Slots which offer anywhere between 1- 8 paylines, and sometimes even bonus games or free spins.

Video Slots / Multi-Line Slots

Animated multi 5-reeled video Slots are perfect for keen online Slots players as they offer wonderful new themes and fantastic entertainment. The symbols of the game are usually related to the overall theme of the video Slots and the paylines are normally more generous than other types of online Slots.

Having evolved from 3-reeled Slots, video Slots have turned the excitement level a notch up as they offer a wider range of bonuses, compelling storylines as well as side games. Of all the various game software providers, Play'n Go casinos offer some of the most inventive Slots concepts around.

3D Slots

If you like video Slots, then just wait until you experience the upgraded version of video slots in 3D! This variation of online Slots game has combined classic video Slots with gripping adventure games.

Therefore, playing 3D video Slots will ultimately allow you to enjoy a video and casino game simultaneously. The end result will surely be able to give you both the psychological satisfaction of completing the saga game as well as possibly winning a huge amount of money. What could be better?

Progressive or Jackpot Slots

Generally these types of slots are the same as video Slots with the simple difference that they have an added bonus pot thrown in. A progressive jackpot is collected over time as players continually place their bets.

Typically, a percentage of each bet goes into a bonus pot which could be won by any player who chooses to play at maximum bet. The amount that can often run into the millions so if you’re looking to win a hefty sum of money and don’t mind betting big, give playing a progressive slots game a shot!

Mega Spin Slots

If you’re looking for a new kind of Slots experience, mega spin slots can give you that bit of edge you’re craving.

When you play online Slots of this type, you can enjoy 9 chaotic Slots games simultaneously – the flashing lights and Slots music can be intoxicating, and you don’t even need to set foot in your local casino.

If you like to have a dose of strategy with your online Slots, or are a bit of a Poker enthusiast, who not try a Video Poker online casino? This hybrid of online Slots and Poker is hugely popular among online casino game enthusiasts. You can even play Jacks Or Better Video Poker here on CasinoGuide!

The most popular Online Slots games in the UK

Online Slots has never been a more popular casino game with UK players than it is right now. The market is absolutely booming, with the top casino game software providers churning out game after game, each specifically tailored and designed to cater to a particular type of online Slots player.

Heavily featured in some of the best games are characters of supernatural ability, such as fairies and superheroes - along with the more standard themes you would expect such as fruit and gems. Starburst is a great example of a timeless classic following this theme.

Here are 5 of the most popular Slots games available right now:

popular online slots starburst


Developer: NetEnt

Starburst is arguably NetEnt's most popular video Slots game. It has 5 reels, 10 paylines, and mixes vibrant colours with a classic fast-paced arcade feel.

Aesthetically, it is a very beautiful game thanks to its central theme of many-coloured jewels in a glittering cosmic background and the soundtrack is very engaging without becoming repetitive and annoying.

The most popular feature is the Starburst Wilds. When these symbols appear on one of the 3 middle reels, they expand across the entire reel and stay this way for up to 3 re-spins - which are essentially free spins.

popular online slots aliens


Developer: NetEnt

As you have probably guessed, this Slots game is based on the 1986 James Cameron classic starring Sigourney Weaver. It uses 5 reels and 15 paylines and offers wins of up to 3187x your stake, while immersing you in classic scenarios from the movie with epic visuals and jumpy sound effects.

It's a Slots game bursting (see what we did there?) with features, including wild substitutions, multipliers, and re-spins. The gamification has been turned up a notch, as you are taken through three 'Levels', culminating with an opportunity to kill the Queen and rake in a huge cash prize as a reward.

popular online slots avengers


Developer: PlayTech

Save the world from the demigod Loki in this reincarnation of the first Avengers blockbuster movie, which offers you plenty of bonus features and free games.

When Iron Man, Captain America, Thor, Hulk, and Nick Fury appear on consecutive paylines, you are given a reward that comes to 10x your stake.

But the best feature has to be the Wall of Heroes - which allows you to play one of four free spins modes, each of which is inspired by one of the superheroes. Eventually you will uncover Loki, and your total win will be revealed.

popular online slots ninja fruits

Ninja Fruits

Developer: Play'N Go

This is a great adaptation of the classic mobile game Fruit Ninja, which enjoyed huge levels of popularity around the time that the smartphone (and in particular, the iPhone) started gaining ubiquity in the UK.

The free spin feature is unlocked when you have a Geisha symbol showing on reel number 1, 3 and 5 at the same time. As well as the free spins, you instantly win 5x your stake, making it a highly worthwhile mid-game bonus.

You can also get an additional bonus by aligning the Shuriken bonus symbol on reels 3, 4 and 5 simultaneously - in this feature you win rewards for throwing the Shuriken at a number of different fruits and knocking them down.

popular online slots twin spin

Twin Spin

Developer: NetEnt

Rounding off our list we have a classic Slots experience, epitomised by its visual theme of fruits, numbers and bars and ameliorated by the addition of the unmistakeable 'WILD' symbol.

The reason for the name 'Twin Spin' is that there are twin reels that are linked during every spin, which can be identified by the flashing golden lights around them. If you are lucky, these expand to further reels and sometimes even all of them, which obviously increases your chances of winning quite considerably.

With this feature, alongside 243 paylines and stacked symbols, there's plenty to be won while playing Twin Spin!

Slots and Bingo

If there are two online games that go beautifully hand in hand, it has to be online Slots and Bingo. Both games are enjoyed almost universally, thanks to their virtue of being great to just ‘pick up and play’. You can either play online Bingo as a complement to online Slots, or on its own.

No prior knowledge, practice or skill is required in order to have fun playing Slots and Bingo – making it the perfect distraction for anyone who lacks the time or simply doesn’t want to play more complex online casino games such as Roulette and Blackjack. With that said, if you want to learn, you can play Roulette for fun without risking any real money right here on CasinoGuide.

Bingo Slots Bonus

Almost all online Bingo sites offer something in the way of Slots games, but not all Slots websites offer Bingo. If being able to play both is essential to you, then you can:

  • Sign up at a Slots online casino and a Bingo website, or;
  • Just sign up at a Bingo site and get your fill of online Slots there

Just be aware that the choices of Slots games will likely be smaller at an online Bingo site, than at a one of the dedicated Slots sites UK casinos have to offer.

Play Online Slots, pay by phone bill

slots pay by phone bill

Adding funds to your account can be as simple as sending a text.

Making a Slots deposit by phone bill is fast becoming one of the most popular ways to add funds to your online casino account.

That’s right – with online slots you can pay by phone bill, making the process of playing Slots games for real money easier than ever. To make a Slots deposit by phone is simple; just look for the option when you are signing up at your choice of online casino.

The option may be worded slightly differently depending on the different Slots websites – but it will be something like ‘Slots pay by SMS’, ‘Slots deposit by mobile’, or ‘Slots with phone bill deposit’.

With Slots, pay by mobile phone for total convenience

It is even possible to top up your online slots casino account just by sending a text from your mobile phone, when you play at a Payforit casino. This is a particular type of phone bill payment, handled by the highly secure and popular Payforit platform.

When it comes to collecting your winnings however, you won’t be able to use the same method. Each casino has its own withdrawal methods, but most will be happy to pay your winnings into your PayPal account, bank account, or simply send a cheque.

Online Slots & PayPal

When the fun is done, and you are ready to cash out all the money you have won, the Slots websites above will present you with a variety of options.

At CasinoGuide, we highly recommend PayPal casinos online that accept this highly trusted and secure payment platform. If PayPal isn't your thing, Neteller casinos are a highly credible alternative worth trying.

Benefits of playing Slots with PayPal

One of the best things about playing Slots with PayPal is how easy the payment is to process, and how quickly it typically happens.

PayPal is a highly secure and respected online wallet, which should give you the peace of mind that even after you’re done playing Slots, PayPal has got you covered.

You can manage your PayPal wallet online through any PC or tablet, or simply download their app onto your smartphone to keep right up to date with your payments. It really couldn’t be simpler.

History of Slots games

slots for real money

The original Slots machines looked a little like this.

Charles Fey, the man considered to be the father of slot machines, invented the first simple machine in the United States in 1887, which incorporated a lever and coin slot. His inspiration to create this machine was perhaps its poker based predecessor, the ‘trade stimulator’ which dispensed cigars or free drinks tokens to winners.

What set his device apart from this machine was the fact that Fey’s slot machine was the first gambling machine to give out money.

According to the book, Slot Machine Mania by Dwight E. Crevelt, the San Francisco Chronicle had reported that Fey managed to impress excited saloon and restaurant owners in the city through his demonstration of how the three reeled ‘Liberty Bell’ slot machine worked, on April 14th of the same year. The intrigued observers predicted that the flashy invention would make a lot of money in the future.

The Introduction of Slots games at the casino

Many years later, in 1946, slot machines were introduced in Las Vegas casinos by a man named Bugsy Siegal, who initially installed the machines to serve as a distraction for wives and girlfriends of players participating in table games, such as poker and blackjack.

As time has gone by, continuous advances in technology have also caused these machines to develop into 5-reeled slots, which cumulatively often account for about 80% of a typical casino’s profits. Take a look at our History of Slots page for more information on the origins of this famous game.

Online Slots FAQ

If you're a newbie online Slots player, you may have a few questions that need answers before you feel ready to dive into one of our Slots websites and begin playing - we hope that the FAQ below will help you in this regard.

Are there any key questions missing? Get in touch and let us know!

Are Online Slots rigged?

If you are playing on Slots websites in the UK, and in particular those which are featured in our list above, then you can feel safe in the knowledge that the Slots are not rigged against you. This is because they are licensed by the regulatory body in the UK known as the Gambling Commission.

How to play Online Slots?

  1. Choose an online casino where you can play Slots online - one from our list above will be a good choice!
  2. Sign up at an online casino - the process should take less than 5 minutes
  3. Make your deposit by whichever means you prefer (i.e. credit card, PayPal, phone bill etc)
  4. Choose a game to start playing. Read the rules to see which reel combinations will give you a win
  5. Spin the reels, cross your fingers and have fun!

How do Online Slots work?

Slots online work via the magic of random number generators (RNGs). These RNGs produce a unique and random set of numbers every time you spin the reels, and each of these numbers relates to a position on each reel.

This is all done in the background, while you see flashy animations and colourful graphics on screen.

Do Online Slots really pay?

They certainly can, if you're smart enough and lucky enough! There are numerous stories of players who have won literally millions of Pounds playing online Slots, and countless more of players who have won smaller life-changing sums.

Even if you only withdraw small winnings, it's easy to do thanks to the wide variety of payment options available.

Play Slots Online Today!

Online slots games have taken the world by storm in recent years making a vaster selection of slots available online for you to enjoy.

If you’re interested in playing, CasinoGuide can help you out in selecting the right online slots casino for you - just choose from one of our recommended casinos at the top of the page and benefit from a huge bonus just for signing up!

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