Top 10 Best Slots Sites of 2021

Welcome to Top 10 Best Online Casinos! Below, you will find a list of fantastic UK online slots casinos, along with exclusive bonuses, game highlights, reviews, articles and more from our team. Compare these great slots casinos to find the best one for you and start spinning the reels today!

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Exclusive Offer
32red
150% Bonus up to £150
+32 Super Spins
18+. BeGambleAware.org. New customers only. Min. £10 depo...18+. BeGambleAware.org. New customers only. Min. £10 deposit, debit card only. Up to 50x wagering, game contributions vary, max. stake applies, 7 day expiry. Full T&C's apply.View full terms & conditions
Starburst
Starburst
Starburst

Starburst

There's a reason it's one of the most popular slots worldwide, with free spins and bonuses galore.

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Mega Moolah
Mega Moolah
Mega Moolah

Mega Moolah

World-famous for a reason, see what all the fuss is about in this African-themed slot.

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Who Wants to be a Millionaire
Who Wants to be a Millionaire
Who Wants to be a Millionaire

Who Wants to be a Millionaire

The popular TV game show from the UK has finally made it onto the slot reels.

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Rate it! (5347)
9.8
Great Value
paddy-power
Bet £10 & Get
250 Free Spins
Opt In required. You can receive 250 Free Spins on Daily ...Opt In required. You can receive 250 Free Spins on Daily Jackpots when you register via the code PGC250, deposit (in one transaction) and bet £10 on any Daily Jackpot game. Free Spins credited immediately. Free Spins are valued at £0.10 each. Spins expire after 7 days after crediting. T&Cs Apply.View full terms & conditions
Jackpot Giant
Jackpot Giant
Jackpot Giant

Jackpot Giant

He's big, he's cool - Jackpot Giant is both giant by name, and by progressive jackpot.

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Halloween Fortune
Halloween Fortune
Halloween Fortune

Halloween Fortune

Ghosts, ghouls, witches and wizards - which one will you meet in this popular slots games?

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Gladiator
Gladiator
Gladiator

Gladiator

Will it be a thumbs up or down? Play this progressive slot and find out.

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Rate it! (5278)
9.5
partycasino
Deposit £10, Get 120 Free Spins
New customers only. 18+
T&Cs and wagering requirement...
New customers only. 18+
T&Cs and wagering requirements apply.
View full terms & conditions
Avalon
Avalon
Avalon

Avalon

Go back to mediaeval times to meet Arthur and the Lady of the Lake in this gorgeous game.

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Mega Moolah
Mega Moolah
Mega Moolah

Mega Moolah

World-famous for a reason, see what all the fuss is about in this African-themed slot.

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Rainbow Riches
Rainbow Riches
Rainbow Riches

Rainbow Riches

Somewhere over the rainbow lies a pot of gold - will you be able to find it in this exciting slot game?

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Rate it! (6507)
9.3
777
200% up to £500
Welcome Bonus
New customers only. 18+
T&Cs and wagering requirement...
New customers only. 18+
T&Cs and wagering requirements apply.
View full terms & conditions
Rainbow Riches
Rainbow Riches
Rainbow Riches

Rainbow Riches

Somewhere over the rainbow lies a pot of gold - will you be able to find it in this exciting slot game?

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Starburst
Starburst
Starburst

Starburst

There's a reason it's one of the most popular slots worldwide, with free spins and bonuses galore.

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CeopatraPlus
CeopatraPlus
CeopatraPlus

CeopatraPlus

The legendary Egyptian Queen wants you to win her riches. And you can’t disappoint a Queen, would you?

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Rate it! (3571)
8.8
888
200% Bonus up to £300
+25 Free Spins
1st deposit only • £20 min deposit with code • Wager depo...1st deposit only • £20 min deposit with code • Wager deposit x20 in 21 days • 50x wagering – req. vary by game - in 21 days • UK only - deposit balance is available for withdrawal at any time • Withdrawal terms & T&Cs apply.View full terms & conditions
Starburst
Starburst
Starburst

Starburst

There's a reason it's one of the most popular slots worldwide, with free spins and bonuses galore.

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Jack's Pot
Jack's Pot
Jack's Pot

Jack's Pot

Venture into the caves for a chance to win one of THREE progressive jackpots, free spins and the Crystal Rock Bonus game.

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Irish Riches
Irish Riches
Irish Riches

Irish Riches

Leprechauns, pots of gold and more - you could win the growing Progressive Jackpot, with a bit of luck of the Irish.

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Rate it! (5225)
8.6
poker-stars
Deposit £10
Get 100 Free Spins
18+ only. New casino players only. Min. £10 deposit with ...18+ only. New casino players only. Min. £10 deposit with code ‘CASINO100’, debit card only. Valid on 7 slots. 7-day expiry. All spins must be used before cashout allowed. Terms apply.View full terms & conditions
Book of Dead
Book of Dead
Book of Dead

Book of Dead

Rich Wilde is back, and his adventures have led him to the pyramids of Ancient Egypt.

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Starburst
Starburst
Starburst

Starburst

There's a reason it's one of the most popular slots worldwide, with free spins and bonuses galore.

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Gonzo's Quest
Gonzo's Quest
Gonzo's Quest

Gonzo's Quest

Follow Gonzo's adventure to Eldorado – the legendary lost city of gold – and follow your heart's desires.

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Rate it! (6207)
8.5
sky-casino
Join & Spend £10
Get a £60 Bonus
18+. New customers only. Opt in required. Min £10 staking...18+. New customers only. Opt in required. Min £10 staking requirement applies. Max bonus £60 with a x40 wagering requirement, to which table & card games contribute 20%. 30 day bonus expiry period applies. Staking rules apply. Eligibility restrictions apply. Further Ts&Cs applyView full terms & conditions
Age of the Gods
Age of the Gods
Age of the Gods

Age of the Gods

Travel back to Ancient Greece for a progressive, historical win!

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Gladiator
Gladiator
Gladiator

Gladiator

Will it be a thumbs up or down? Play this progressive slot and find out.

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Avengers
Avengers
Avengers

Avengers

Experience The Avengers in all their glory - and with a glorious choice of 5 bonuses to play for!

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Rate it! (5385)
8.4
mr-q
Deposit £10
Get 30 Free Spins
New customers only. 18+ T&Cs and wagering requirements ap...New customers only. 18+ T&Cs and wagering requirements apply.View full terms & conditions
Starburst
Starburst
Starburst

Starburst

There's a reason it's one of the most popular slots worldwide, with free spins and bonuses galore.

Play Now
Gonzo's Quest
Gonzo's Quest
Gonzo's Quest

Gonzo's Quest

Follow Gonzo's adventure to Eldorado – the legendary lost city of gold – and follow your heart's desires.

Play Now
Rainbow Riches
Rainbow Riches
Rainbow Riches

Rainbow Riches

Somewhere over the rainbow lies a pot of gold - will you be able to find it in this exciting slot game?

Play Now
Rate it! (5769)
8.2

FINDING THE BEST UK SLOT SITES

Here, we provide reviews of online slots sites and detail the bonuses that can be won with these games hubs. We hope to help you to compare many sites more quickly and effectively.

WHICH ARE THE BEST ONLINE SLOTS SITES?

While the choice of casino games online has significantly broadened over time, online slots remain especially appealing among these games. The history of slots games at bricks-and-mortar casinos dates back much further than the internet, which nonetheless can greatly enhance game playing.

This is because while the range of slots games available at physical casinos can be limited by the availability and functionality of the machines, online operators do not have to contend with this. Online, bonuses and prizes can be almost limitless.

Hence, even just one site can give you a pleasingly wide choice of experiences. It isn't uncommon to see multiple rows of slots, hidden levels and especially interactive gameplay. However, you can further enrich the experience by being discerning about your choice of site.

As a site's quality remains very much a matter of opinion, it pays to know the right approach for assessing how beneficial any particular one of these sites would be for you specifically.

HOW TO CHOOSE A SLOTS SITE

Here on Top 10 Best Online Casinos, we have reviews of various exciting slots sites. Perusing these reviews is a good starting point.

We take various factors into account when we decide whether to recommend an operator. These factors include...

  • Game variety - As fun as slots can be, you can enjoy them for longer when the types and themes of such games are diverse.
  • Bonuses and promotions - Certain bonuses can be within easier reach depending on exactly how you like to play.
  • Software - A site's slots could come from various software firms or just one high-end developer.
  • Safety and security - We recommend only sites that are overseen by UK governing bodies.
  • Support - We also review the effectiveness of support staff.
  • Payment options - We make a record of the payment methods that a given site will accept.

If you remain indecisive about which provider to opt for, we have a more detailed guide that can help you to clear much of the confusion.

TYPES OF ONLINE SLOTS

  • Free and real money- All sites that we recommend offer chances to freely sample multiple slots games. Games where you deposit - and compete for - real money are called... real money slots.
  • Video - Especially common, these regularly pay out jackpots which, nonetheless, will be relatively small.
  • Jackpot- These games build up "progressive jackpots" by taking small shares of the wagers. As a result, the payouts can be huge.
  • Classic - These games imitate slots that are popular in traditional casinos. As such, they can integrate simple gameplay into a retro interface.
  • 3-reel and 5-reel- 3-reel slots are the more traditional option, although the opportunities to win can be more varied with 5-reel versions.
  • TV-themed- Watch out for games based on popular TV franchises like Game of Thrones.

We have also detailed many other forms of web slots - including 6 reel, 7 reel and 3D varieties.

HOW TO PLAY SLOT MACHINES

The most basic rules for playing slots are that you insert coins before pushing a button to spin the reels. As the reels stop, they could form symbols in a combination that lands you winnings. These symbols have to cover at least one "payline" for a triumphant result.

The word "payline" refers to a line across which a winning combination of symbols must appear on the reels to produce a payout. Depending on the game, there could be only one payline, usually crossing centrally, or multiple lines going in various directions.

As we have previously made clear, the number of reels in a game can vary. It is traditional for a slots game to have 3 reels; this relatively simple arrangement is ideal for beginners. However, more experienced players may consider 5 reel games more exciting due to the extra possibilities.

Whatever your level of experience, you could thoroughly enjoy picking up bonuses - such as extra payouts and free spins - along the way. Such extras could be amassed through, for example, achieving a particular combination of symbols; alternatively, the bonuses could be won more randomly.

SLOTS GLOSSARY

There are various pieces of jargon that, as you play, you could come across but ultimately be confused by. Here are just a few examples of terms and what they mean.

  • Auto play: This is where you have the reels automatically spin a particular number of successive times. You would not have to keep pressing a button or pulling a lever every time you want to spin.
  • Fixed jackpot: No matter when this jackpot is won, it will pay out exactly the same amount.
  • Multiplier: This is a symbol that, when it appears in a winning combination, multiplies the payout brought by that combination.
  • Scatter: - A symbol that, when it appears on an active payline, can bring a win without needing to be in a particular combination. Usually, at least three scatters anywhere in view triggers a payout.

Our site includes a more comprehensive glossary of terms. You can benefit from thoroughly reading this before you start playing any online titles. We also have an ultimate guide to online slots; reading this can appreciably improve your overall grasp of the game.

Trust Top 10 Best Online Casinos to give you all of the information that you need about the leading sites and the different types of slots available to enable you to get the most out of your game playing!

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