What are Slot Sites?

Slot sites are online casinos that specialise and focus more of their efforts towards finding and having the best online slots for their players to play on. While a casino site should never djust have slots – they should cater towards the casual live casino and table game player too, slots are certainly one of the main attractions when it comes to playing at an online casino. All the slot sites listed on Mobile Casino Kings will be licensed and regulated by the UKGC or the United Kingdom Gambling Commission.

How we review and rate Slot Sites

While analysing any slot site that you see listed, we apply our very own strict review criteria. This is to make sure that each of the online casinos get sa fair trial before listing them in our table above. Our team here are all seasoned punters themselves, and only rate casinos they would play slots at themselves. Some of the criteria we look at are:

Website Usability – In our opinion, there’s nothing worse than when it comes to signing up to an online casino and the site is badly designed, complicated and pretty much unusable. We like to test out both the mobile and desktop version of each site to make sure smooth playability across all devices.

Casino Games – While online slots are certainly the main theme of this page we like to look at the greater selection of selected games available. Slots online are fun, but sometimes everyone gets a little bored and wants to try out something different like Roulette or Blackjack.

Welcome Bonus – Welcome bonuses are one of the main ways of attracting customers to sign up to slot sites. These welcome bonuses come in a wide range – whether its by using a no deposit bonus, free spins or a deposit bonus this is one of the most important tools in the best online casinos’ tool box. We pay particular attention to this part of the review as we like to see the types of Terms and Conditions – such as the minimum deposit required or whether you can only use the bonus on selected games.

Slots Selection – Now we get to everyone’s favourite part, the types of online slot games you’ll be able to play. Any slot site worth its salt will have a range of different online slots categories for you to dig into, whether its a progressive jackpot slot or a 3D video slot. Players should always be able to play their favourite games.

Payment Methods – Nowadays its vital that a slot site allows their customers to get money in and out of their accounts as quickly as possible with a multitude of payment methods. The more methods and fthe faster these methods are the better in our opinion. So much so we’ve even got a fast paying casinos page that you can check out.

Customer Service – Everyone gets stuck as some point when playing on an online casino – even at the best online slot sites. Every online casino that we will have listed here will have their very own dedicated support team that you’ll be able to contact via multiple methods. We expect slots sites to be able to answer your questions quickly and efficiently by your most favoured method.

Safety & Security – Staying safe online is more important now than its ever been. With data breaches happening all the time, its paramount that you choose a reliable slot site. This means all of the data passed between your computer and the online casinos’ servers should be encrypted, with SSL encryption being the minimum level. You should also be playing at UKGC licensed slots sites only as this will make sure that the casino will adhere to regulations set out by the UK Government.

Types of Bonuses available at Slot Sites

There are generally three types of bonuses (also known as casino offers) that you’ll be able to claim when signing up to a slot site. These are:

Free Bonus No Deposit: This type of welcome bonus offer is one of the best online when it comes to allowing players to try out the casino games on offer. Here you’ll get bonus funds added to your account as soon as you register with your chosen online casino. These types of bonus casino offers can also take the form of extra spins.

Deposit Bonus Offer: This is where players are required to make a deposit in their casino account and then they get an extra bonus amount on top to play with. The bonus amount is usually a percentage of however much you deposit. Now this can vary depending on where you sign up – some casinos offer a 100% bonus where as others offer a 200% one. Sometimes you’ll find this welcome bonus paired up with extra spins which can only be used on selected games.

Free Spins: Free spins operate in a similar way to their no deposit bonus counterparts and are generally only redeemable on a specific slot game. Slots sites that offer these types of bonuses can even wager free spins – this type of welcome offer can be cashed out instantly. Free spins are some of the best deals online casino sites offer.

What slots sites have low wagering requirements for their bonuses?

Slots welcome bonuses are a great way to really get the best online slots experience possible and for a new player to try them out. Here we’ll be covering some of the slots sites where you get to use your welcome bonus as efficiently as possible – without having to hit a huge wagering requirement. Remember that all bonuses will have some form of wagering requirements attached to it whether its 1x playthrough or 10x playthrough (or even higher!). Check out the casinos below and pick your favourite slot with a low wagering requirement.

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As we’ve mentioned above bonus offers are one of the main ways the best online casinos pull in players and some casinos have extremely difficult wagering requirements to hit. We feel that any bonus that has a wagering requirement of 45x and above should be avoided. If the wagering requirement falls between 30 – 45 then this is completely doable should you be provided with enough allotted time to be able to actually cash out the bonus.

How Does RTP Work at slots sites?

RTP stands for Return to Player. This is something that all casino players should know and understand before they even start playing any of the casino games at a site, whether its video slots or table games. Essentially the RTP % is what the slot game should pay out over its life time, e.g. if an online slot game has an RTP of 96% then theoretically if you played through a £100 you should end up with £96 – this means that specific online slot will have a house edge of 4%.

Please keep in mind though that this is theoretical calculation only and is seldom ever true. The reason why this isn’t exact science is due to all slots sites operating with a piece of software called an RNG (random number generator). These are used to create the outcomes on slots ensuring that any of the spins placed by players can never be predicted or influenced by external factors. Below we will cover some of the slots you can find with the highest RTP % for players.

Highest RTP online slots

We’ve scoured all the slots currently available for UK players and have compiled a list of the highest RTP slots that are currently available. While wins may not be as big as some of the lower RTP online slot games you’ll certainly enjoy the more frequent wins.

5. Starmania – 97.87%

Starmania is a slot that’s been created by NextGen, following a similar pattern to NetEnts starburst game. This slot features wild systems which can really help aid your wins. It also features 10 paylines with a ‘wins both ways’ feature. With each line win you get you’ll also get the option to gamble which means you can double or quadruple your wins (keep in mind though you can lose your wins as well). Overall this slot has an RTP payout of 97.87%

4. Blood Suckers – 98%

Blood Suckers is the brain child of Swedish slot developers NetEnt. Heavily based off Count Dracula – if you’re a fan of vampire mythology then this high payout video slot could be for you. With an RTP of 98% the wins are nearly guaranteed to be coming in fast. The slot also has a great range of special features for you to trigger in game as well such as wild subs, free spins where you can get triple pay-outs, scatter pay symbols and there’s even a vampire hunting mini game where you can try your hand at being your very own Van Helsing! Once you trigger the mini game you will find yourself in a burial chamber where you will be required to open the coffins and slay the vampires that are lying in wait, earning coins for each of the creatures you kill.

3. 1429 Uncharted Seas – 98.6%

Created by slot developers Thunderkick, this video slot has had its reel replaced with a hand drawn map with the symbols being swapped out for a variety of sea creatures and other relevant sailing symbols. Uncharted Seas has a payout rate of around 98.6%, however we did find it quite lacking on the bonus features side of things, only having expanding wild symbols and a free spins bonus round where you can get up to 50 free spins. While the lack of bonus features is a little disappointing, it more than makes up for this with its high payout rates.

2. Jackpot 6000 – 98%

If you’re a fan of classic slots then this is certainly one worth checking out. This game certainly has an old school vibe to it, so if you’re a fan of a more classic/basic slot then this could be for you. There are up to 5 pay lines to choose from with between 1 – 10 coins being allowed per spin. We recommend that if you’re going to play this game then to play with the max bet, as this will allow you to trigger the Supermeter mode which has a mystery prize of between 10 – 6000 coins up for grabs. If you manage to land 3 jokers on a pay line then you will get the full 6000 coins guaranteed. So keep in mind that when you play online with this slot betting between 1 – 8 coins, you’ll only get an RTP of 74.9% – 79.2%, where as if you play with 9 or 10 coins you’ll get an RTP of up to 98.9%.

1. Mega Joker – up to 99%

If you thought the classic slot Jackpot 6000 by NetEnt had a high RTP… well they went and topped that with their another classic themed slot – Mega Joker – which can feature up to 99% RTP! Like Jackpot 6000 your RTP % will scale based on how much you wager. If you bet with a maximum of 10 coins you’ll get between 89.1% and 99% RTP. This video slot features the Supermeter mode as well, which is a great way to boost your winnings from this fast paced online slot.

Top Slot Software developers

With new slot games coming out all the time, its important to know which slot software developers you should be looking out for. Everyone has their own preferences in this department, however there are some key players in the industry which you should always check out. Below are the 4 main players in the online slot software industry:

Playtech – Playtech have been in the industry since 1999 and have over 330 slots in their library. Due to their market dominance, Playtech have managed to secure the IP’s for various well known titles such as Batman, Pink Panther, The Mummy, Gladiator, Superman and Monty Pythons Life Of Brian. The popularity of these films has certainly helped put Playtech at the forefront of the online slots industry.

Microgaming – Microgaming have been around since 1996 and lead the pack in terms of size and popularity. Boasting over 650 video slot titles in their library they’ve dipped their creative fingers in all the pies. They’re also featured in the Guinness Book of Records with the largest Jackpot payout ever on an online slot, which currently stands at £13,213,838.68 .

NetEnt – While NetEnt have also been around a long time, it’s only within the last 10 years that they have started becoming exceptionally popular. This was namely due to them incorporating HD graphics into all their games and becoming one of the first slot software developers to truly go mobile. This has allowed them to carve out a large portion of the market. You’ll also notice that NetEnt slots tend to have a higher RTP than most of the other software providers.

IGT – IGT are the oldest on our list of software developers – starting up initially in 1974. They’ve got a wealth of experience from crafting the best online slots and games for their land based casino counterparts. While their main focus over the years has been physical slot machines, they effortlessly moved into the online slot market a few years ago with popular games such as Cleopatra, Pixies of the Forest and Da Vinci Diamonds to name a few.

What can I expect at a Slots Site?

With the best online slots sites bthat we have listed here, we would expect you to find a greater focus on – you guessed it – the best online slots. This means you’ll be able to play a range of games from classic, video, HD/3D to progressive jackpot games. We’d also expect new slots to be added weekly from a variety of providers to keep their libraries looking fresh and up to date, with all the latest games available for players to play online.

Playing slots online Vs a land based casino

While playing a land based casino is fun and there’s not much that can be done in regards to recreating the thrill of playing real life slots at home – as unfortunately their isn’t a live casino section that caters for this just yet. Playing slots online does have its benefits which we will go into below:

Better Choice – With the best online casinos constantly competing with each other, one of the ways for then to stand out amongst other slots sites is by having the best slot library that’s packed full to the rafters with new games from a whole host of different developers. This is great for slot players as it means you won’t be getting bored of the games at your chosen slot sites anytime soon. You also wont have to wait in queues to play your selected games – which is something that can certainly happen at a land based casino.

Welcome Bonuses – Now this is certainly something you won’t get at your local casino. The best online slots sites have a myriad of bonus offers available for you to claim – Whether it’s a no-deposit bonus or free spins there’s normally a bonus for everyone. These are without a doubt a great way of extending your play time and also increasing your max stake which could mean much greater winnings – Players are always attracted to these types offer.

Enhanced RTP – Playing a slot online will generally have a much better RTP than it would if players were to play it in person. This means you’ll have more winning spins playing online than you would at a casino.

Mobile Gaming – Mobile casinos are certainly becoming everyone’s chosen way to play their favourite online slots. No longer do you have to be tied to a computer while you play your favourite progressive jackpot. So whether it’s playing on the way to work or even on the toilet, its certainly much easier than having to head down to the local casino!

Max bet, bonus funds and bonus spins: What are they?

Max bet: This simply means you can optimise your play with multiple pay lines. The more serious players will realise that playing the max number of pay lines on any slot is the greatest chance they’ll have of winning. If there are 30 pay lines and you only play one, then you are having 29 fewer chances to win on every spin versus someone who plays all 30 pay lines. The more pay lines you have in play, the better your chances of finding a winning line. This is why the Max bet option is always worth considering.

Bonus funds: Bonus funds are a means of allowing you to play a slot on the casino’s funds, with a chance to win real money. The amount of bonus funds depends on the welcome bonus and they may have a minimum deposit required. Also keep in mind that any terms and conditions apply.

Bonus spins: Finally, Bonus spins is another word for free spins. Bonus spins/free spins can be found in the ‘Types of Bonuses available at Slot Sites” section above.

Can I play slots with a mobile device?

Yes. The truth is a slots site won’t make it onto our list of the top UK slots sites if it doesn’t have a strong mobile gambling offering. The best mobile slots sites adapt to the screen to fit any mobile device and the mobile casino should also allow you, the player, to touch it. There aren’t as many slots on mobile sites, though the choice is still good.

Should I be playing at new slot sites?

There are certainly a few perks when it comes to playing at new slot sites. One of them is they do tend to be much more generous with welcome offers. However, we have found them to be lacking in regards to how many different slots are available at the site itself. Whether you choose to play at a new or old slot site is down to you as each has their own merits.

Types of slots available online

Progressive Jackpots

Jackpot slots are casino games that have a bonus which stretches over multiple casinos and a small percentage of each wager that each player makes goes towards the progressive jackpot amount. These slots entice players due to their high volatility, which means they pay out larger amounts but less frequently. Jackpot slots are usually more basic in terms of features and their aesthetics, but they are improving as of recently.

Video

These games are the most common that you’re likely to find at top slot sites. These games have more regular payouts but these payouts aren’t nearly as much as jackpot slot games. Video slots are associated with having many ways to win, often between 10 and 25, although some are known for having over 3,000 different paylines. If it’s bonus features that you’re looking for, these can be found across hundreds of games, giving you the chance to play through incredible mini-games and win free spins bonuses. Video slots come in all shapes and sizes – you can find all sorts of themes, from underwater aquatic game styles, all the way to horror films and everything in between.

Classic

When picturing a slot machine that you’d find in a brick and mortar casino, we think of that classic one-armed bandit and this is what plenty of classic slots are based on. By rule of thumb, you’ll find less paylines and a much simpler style of gameplay. So, if you’re tired of bonus rounds and over the top animations, these might be more up your street.

3D

These types of slots are constantly pushing technology boundaries, providing scintillating bonus rounds and splendid animations which add a level of immersion you won’t find on other games. 3D slots like Betsoft’s “It Came From Venus” and Netent’s “Gonzo’s Quest” are well worth checking out, being some of the most loved slots on the internet.

Fruit Machines

Back when physical slot machines were first introduced in casinos, they were typically themed around fruits, hence the name “Fruit Machine”. Although they aren’t nearly as popular as online slots, game developers still include fruit symbols. If you’re feeling nostalgic, games like Cash Stax and Call of Fruity will certainly deliver.

How safe is playing online slots?

If you’re new to the exciting world of playing online slots at casino sites well then you may be slightly worried as to whether or not its exactly safe. Well let us assure you by saying if you play at any of the sites we’ve got listed on this page then you’ll not have any problems in regards to safety.

UKGC Regulation Sites

The UK is one of the most regulated countries when it comes to online gambling and is therefore one of the hardest countries to get licensed in throughout the globe. This means that every online casino you see with a UKGC license has been put through their paces by the UKGC to make sure they offer a safe and secure slot site for you to wager at.

For UK players its not just the UKGC you can look for in regards to security, there are a number of other jurisdictions that can be relied upon for old and new players. Some of the other recommended jurisdictions are the Malta Gaming Authority, Guernsey Casino Gambling Control and Alderney Gambling Control. If you see these on any of the sites you play slots at then you won’t have a problem.

Slot Sites FAQ

Are slots fair?

All the slot sites on our list above are fair places to enjoy your favourite online gambling games. All the slots listed here are fair and have been checked and audited by the UK Gambling Commission to ensure the correct regulations. Always remember to gamble responsibly (begambleaware.org).

What is the most popular slot game in the UK?

The United Kingdom has some incredible slot games to offer and there are a few fan favourites. Netent’s Starburst has been a fan favourite since it was released in 2012. Another developer to look out for is Microgaming. Their progressive jackpot network has been making a lot of noise and recently hit over a total €1Billion paid out in jackpots.

Is playing slots a good way to make money?

You can absolutely make money from playing slots. Most games have a return to player rate of 90% or above. This means in theory that for every £100 you spend; you get £90 or more back. This isn’t always the case and in some examples you might win a lot more, but on the other side of the coin, be left with much less.

Can I play online slots from my mobile?

Most of the best slot sites offer a mobile option and this has helped online slots become accessible to a much wider audience as technology has moved forwards. All the best online casinos at Mobile Casino Kings offer a mobile platform where you can enjoy your favourite slots on your phone.

Which site is the best to play slots on in the UK?

There’s no simple answer to this question and it can depend on what sort of experience the player is looking for themselves. We recommend you try out a couple of different slots sites to get a feel for what you like and you can find some player favourite casinos by scrolling up the page and looking at what we offer.

Are slots legal in the UK?

Slots are completely legal in the UK as long as you’re over the age of 18. The United Kingdom has quite relaxed laws when it comes to online gambling.