Best Online Slot Games at UK Casinos in 2023 | The Sun

PLAYING fun online casino games has become massively popular in the UK recently.

One of the main reasons for this is the awesome games internet casinos have to offer. Slots are a top choice and are a popular game for UK players. 

While this is down to the innovative features, crisp sound FX and stunning graphics modern online slots deliver, the sheer choice is also a big draw. There are literally thousands of fun slots to enjoy online in the UK, and all offer unrivalled entertainment to casino customers. 

But which are the best slots to track down, and which are the most exciting UK internet casinos to try them at? 

Our top slot for August 2023 is Divine Fortune Megaways – Read our Divine Fortune Megaways review and start playing at Duelz Casino!

Top online UK casinos with the best slot games 

  1. Duelz
  2. Mr Vegas
  3. Magic Red
  4. MrQ
  5. Voodoo Dreams
  6. Luckster
  7. Winomania
  8. Hot Streak
  9. LeoVegas
  10. VegasLand

Here’s how we picked the best online casinos in the UK for slot games

As anyone in the UK who plays casino games online knows, there are lots of iGaming platforms you can play slot machine games to try to win a fortune. This meant we had to apply strict criteria to find iGaming platforms in the UK which offer the best slot gaming experience. 

But what criteria did we use for our guide exactly? 

Mobile app

Mobile gambling is a big part of online casino play in the UK. One of the main criteria we rated each casino by, therefore, was how good their mobile app was for betting on slots. This included looking at whether it was available on all mobile devices, had plenty of useful features and had a smooth, responsive feel. We also took into account how many slots/top games were on each app we reviewed!

Free spins bonuses

Casino bonuses are another reason why people in the UK love playing slot machine games online and why they offer such excitement. One of the most appealing promos to track down is free spins bonuses. This sees the casino in question giving you free spins to use on top slot titles after registration. The very best UK internet casinos in 2023 also include free spins as part of regular promotions for existing players.

No deposit spins

Next to free spins or even a free bet, players in the UK also love no-deposit spins when gambling. This offer sees casinos crediting free spins to your account, which can be used on selected slots – without you having to deposit or risk any cash first! 

High RTP (return-to-player) percentage

Another thing we looked at was the RTP percentage of the top slot games offered by the great UK casinos above. To be more specific, we targeted internet casinos for Brits which carried high RTP slots. This is because these games offer a better payout percentage to players over time and offer more chances of getting a better overall return. 

Access to demo play

Demo play is a great feature on slots which gives you a chance to bet on slots without using real money. This is particularly useful for people new to slot gaming online or for trying out new games. Any top casino should have easy access to demo play and plenty of games to test out for free. 

Our favourite slot games

Although finding great UK online casinos for gambling on slots is worthwhile, it also pays to know which of the most exciting slot games to try. But what are our five favourite slots of all time? 

1. Book of Dead – Developer: Play’n GO – RTP 96.21%

With an ancient Egyptian theme and a cool main character in Rich Wilde's Book of Dead from the top studio, Play'n GO delivers top-notch excitement. This easy-to-play slot comes with five reels and ten pay lines – plus an awesome Free Spins feature which can grant unlimited spins. There is also a fabulous special expanding symbol which can deliver the chance of winning up to x5000 your stake.

The exciting welcome offer at Duelz Casino features an exclusive bonus of free spins tailored specifically for this popular slot game.

Duelz Casino sign up offer

£100 bonus + 100 free spins on Book of Dead

18+ new players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30 times the sum of the deposit + bonus. Max redeemable from the welcome bonus: £500. Full T&Cs apply.

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2. Starburst – Developer: NetEnt – RTP 96.09%

From well-known gaming studio NetEnt, Starburst is a real cult classic slot machine and easily one of the most popular slot games ever to spin. When you take into account its engaging gameplay, interesting sci-fi theme and arcade feel, this is not a surprise. Boasting a five-reel/ten payline design, the main Starburst Wilds feature can deliver up to three re-spins for large payouts. 

If you like this classic slot game you can experience it with the no deposit welcome bonus at MrQ casino. You get five free spins for Starburst upon registration. Plus, after your first deposit using the promo code THESUN35, you'll receive an additional 30 free spins.

MrQ No deposit bonus

Get No Deposit Spins + 30 Free Spins on Your First Deposit with code THESUN35

18+ |First 5 spins: Players who have successfully completed age verification will be credited 5 Free Spins on Starburst 10p per spin, no deposit required, no wagering requirements. Subsequent 30 spins: Min deposit & spend £10. Max 30 spins on Starburst at 10p per spin. Spins credited upon spend of £10. Full T&Cs Apply.

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3. Cleopatra – Developer: IGT – RTP 95.02% 

Another real classic online casino game is Cleopatra from gaming provider IGT. This game has not only five reels but also 20 pay lines for more chances of winning. As with the Book of the Dead, the Egyptian theme gives an air of mystery to proceedings. Wild symbols can double payouts on this slot, whilst the Cleopatra Bonus feature can deliver up to 180 free spins with treble multipliers. 

With Winomania's welcome offer you'll get free spins on a variety of different slot games, including Cleopatra, so be sure to check it out.

Winomania sign up bonus

100% up to £100 + FS

18+| Please play responsibly | www.begambleaware.org | T&C Apply
1st deposit only. Min deposit £10. Max bonus: £100. X40 wagering. Bonus Spins valid for selected games only. X40 wagering on bonus spins winnings. Expire within 24 Hours. User Agreement & Bonus T&C apply.

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4. 9 Pots of Gold – Developer: Microgaming – RTP 96.24%

Microgaming is an iconic studio for casino games, and the Irish-themed 9 Pots of Gold shows why. The RTP of 96.24% is pleasingly high, for example, and there is a max win of x2500 your stake on each spin. The five-reel and 20-pay line design is easy to pick up, whilst the free spins plus multiplier round can bring some pretty decent prizes. 

5. Big Bass Splash – Developer: Pragmatic Play – RTP 96.71% 

Although there may only be ten pay lines on this 5-reel stunner from game developer Pragmatic Play, the very high RTP of 96.71% offers all the excitement you could want. This is also one of the best casino slot games to try out if you like a fishing theme and colourful graphics. Players can collect Wilds on this game to win free spins, and they can add up to a x10 multiplier on wins. 

If you like the Big Bass Splash slot you are in for a treat at LeoVegas. As part of the welcome bonus, you'll receive a generous gift of 100 free spins on the exciting slot game.

LeoVegas sign up

Get 100% up to £200 + 100 free spins

New reg only. Opt in & deposit £10, £50 or £100 within 14 days & further 7 days to wager cash stakes 50x to unlock reward (up to £200 on first deposit). Wagering/game contributions vary. Up to 100 free spins x10p added to Big Bass Splash after depositing & wagering, 3 day expiry. Full T&Cs apply.

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Honourable mentions

There is no doubt that the games listed above are the best casino slot games to try. With so many amazing slots out there, though, we would also like to mention some other top games which are worth playing. 

  • Gonzo’s Quest – Developer: NetEnt – RTP 95.97%
  • Sweet Bonanza – Developer: Pragmatic Play – RTP 96.48%
  • Immortal Romance – Developer: Microgaming – RTP 96.86%
  • Narcos – Developer: NetEnt – RTP 96.23%
  • Sticky Bandits – Developer: Quickspin – RTP 96.58%
  • White Rabbit – Developer: Big Time Gaming – RTP 97.77% 

What is volatility in slot games?

Volatility (also known as variance) refers to how often a slot may payout and is different than the official RTP (which measures potential returns over a set number of spins/time period). Low volatility slots tend to bring more frequent wins for less risk, whilst higher risk high volatility games tend to pay out less but for bigger amounts.

What slot game pays the best?

White Rabbit from Big Time Gaming has the highest RTP percentage at 97.77%. 

What are the best real money slot games?

This is a hard question to answer, as different people like different themes and character slots come with. It is really down to personal choice and which you find most fun to try out! For many people, though, classics like Starburst and Book of Dead are the top real money slots around still. 

Mr Vegas sign up offer

100% up to £200 + 11 wager-free spins

18+ new players only. Min deposit £10. Maximum bonus £200. Any amount over £200 will not form part of the player’s first deposit. Wagering requirement 100% match bonus: 35 times sum of deposit + bonus. Terms and conditions apply.

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What are the loosest slots?

Loose slots are generally considered to be those which pay out often. As a result, players who do not like to wait for wins are always looking for the loosest game to check out! Thunderstruck II from Microgaming falls into this category, as does Bloodsuckers II and Wild Scarabs. 

What types of slots are available at online casinos in the UK?

There are a huge variety of slots to play at UK online casinos, and this is what makes them so popular. If you want to know a bit more about the sorts of slots to check out, the below should help: 

  • Standard slots – these games offer standard gameplay features and don't tend to feature things like huge jackpot prizes.
  • Free slots – these slots are free to spin and are ideal if you play purely for fun. 
  • Megaways slots – these types of games involve Megaways gameplay mechanics, which give more ways to win per spin.
  • Progressive jackpot slots – this slot game type sees the jackpot prize grow progressively bigger until someone wins a fortune. 
  • High payout slots – one of the best slot machine titles online, these games are known for having high RTP figures and delivering larger payouts than standard slots.

What are the most popular slot game providers?

If you are a UK player, the most popular slot game developers include NetEnt, Microgaming, Pragmatic Play, Play’n GO, Quickspin, Red Tiger Games and Yggdrasil Gaming.

What are the best welcome bonuses for slot games? 

Welcome bonuses are freebies that UK casinos give to players for signing up with them. The best ones to look out for in terms of slots are free spins to use on selected games. 

Magic Red sign up offer

100% up to £25 + 25 extra spins

18+ | Min deposit £20. Offer valid on first deposit for 24 hours and applies to new players only. Winnings must be wagered at least 35x. Terms and conditions apply.

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What UK casino has the best selection of slot games?

In truth, any top casino site in the UK recommended above are our top choices due to the large slot game library they feature. LeoVegas is perhaps the top casino, though, and known for having a large selection of slots (including jackpot games) to try. 

What are special symbols in slot games?

Getting the most from playing the best slot game online in the UK means knowing what the most common special symbols mean. But what do the most widely seen in games refer to? 

  • Multiplier – this symbol multiplies any winnings by the given amount (i.e. x10 or x20)
  • Wild – substitutes for other game symbols to create winning combinations 
  • Scatters – trigger specific bonus rounds or cash prize payouts
  • Bonus – triggers bonus features rounds only 

What slots can be played on iOS and Android mobile devices?

You should find that all the best slot machine games described earlier can be played on iOS or Android mobile devices. Whilst most mobile apps will carry the same choice of games as the desktop casino, certain ones may not. 

Luckster sign up offer

100% up to £200 + 100 spins

18+ | New depositing players only. Min. deposit £10. Max. bonus varies per deposit.1st deposit: 100% up to £50 + 20 Spins on Starburst *Min. Deposit £10. 2nd Deposit: 50% up to £75 *Min. Deposit £20. 3rd Deposit: 50% up to £75 *Min. Deposit £20. Bonuses that require deposit, have to be wagered 35x. Full T&C apply.

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Our top 5 tips and strategies for picking the best slot games

Playing slots in the UK is all about having the best time and trying to bag the best prize payouts. The most sensible way to go about this is following the below tips for picking the top slots to try.

  1. Look at online slot game reviews – A good first tip for finding the best slot machine game online is to look around online for lists of the best games to check out. Once you have done this, look up reviews of individual games to find out more about them before playing. 
  2. Choose ones with higher RTPs – Another good strategy for tracking down the best game is focusing on slots with higher RTP figures. It is better, for example, to only play those with an RTP of at least 95%, as you should find you get a good return over time. 
  3. Pick volatility which suits your own gaming style – In addition to focusing on RTP figures, try to pick slots which suit your own playing style in terms of variance. If you want to win a fortune and don't mind waiting for bigger wins, high-volatility games could be for you. 
  4. Pick games with themes you enjoy – One tip you should certainly follow when choosing the best casino slot games in the UK is going for one that has a theme you connect with. This makes your session lots more fun and sees you getting fully immersed in the action.
  5. Choose slots with innovative features – A good strategy to follow when selecting top slots for wagers is choosing ones with innovative gameplay features. This makes the game more interesting, and you can often see awesome new bonus games/prize features included. 

Remember to gamble responsibly

A responsible gambler is someone who:

  • Establishes time and monetary limits before playing
  • Only gambles with money they can afford to lose
  • Never chase their losses
  • Doesn’t gamble if they’re upset, angry, or depressed
  • Gamcare – www.gamcare.org.uk
  • Gamble Aware – www.begambleaware.org

For help with a gambling problem, call the National Gambling Helpline on 0808 8020 133 or go to www.gamstop.co.uk to be excluded from all UK-regulated gambling websites.

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