The Best-Rated Slot Casinos in 2020

Looking for the best slot casinos on the Internet? Stop your search – you’ve already found them. UK Online Casinos has compiled a list of the industry’s top-rated slot casinos. They feature games from the top software providers including the biggest slot hits and newest releases. All of our recommended slot sites are 100% legit and safe to play at. Make your pick, try slots for free, and have some fun before splashing the cash. Do you feel lucky? With Lady Luck by your side, you could win millions!

uusi

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Bonus Value Bonus Primary title

Free spins

20 Primary title spins

18+ only T&Cs Apply

Regular promotions for new and returning players

Competitions and prize draws

Available to access internationall

Promo code:

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Payment Method:

Apps & Devices:

Welcome Bonus:

Bonus promo title

18+ only T&Cs Apply

Trusted

Bonus

Free bets and bonuses on sign-up

Free spins

X

  • Range of customer support options
  • Cash out feature
  • Mobile apps for Android and iOS

18+ only T&Cs Apply

Large selection of promotions

Generous welcome bonus

High quality user interface

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

Free bets and bonuses on sign-up

18+ only T&Cs Apply

Trusted

Bonus

200% up to £500 on 1st deposit

Free spins

X

  • High payout rate (96%+)
  • More than 25m players
  • High-quality games software

18+ only T&Cs Apply

Regulated and licensed by several establishments i.e. UK Gambling Commission, Gibraltar Regulatory Authority etc.

Two VIP Reward Programs based on accumulating comp points.

In-play betting and Betting App available for Android and iOS devices.

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

200% up to £500 on 1st deposit

18+ only T&Cs Apply

Trusted

Bonus

150% Welcome Bonus

Free spins

X

  • 550+ Games incl. slots and live dealer
  • 24/7 Customer Support
  • Mobile Casino

18+ only T&Cs Apply

Multi award-winning casino

Games from numerous top developers

Highly rewarding loyalty programme

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

150% Welcome Bonus

18+ only T&Cs Apply

Trusted

Bonus

Amazing promotional offers and free spins!

Free spins

X

  • Top rated casino games
  • Games from many top developers
  • Great mix of slots, roulette and live casino

18+ only T&Cs Apply

Regular promotions for new and returning players

Competitions and prize draws

Available to access international

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

Amazing promotional offers and free spins!

18+ only T&Cs Apply

Trusted

Bonus

X

Free spins

Up to 500 Free Spins

  • VIP Rewards Program
  • Compatible with Desktop and Mobile Devices
  • Leading Live Casino

18+ only T&Cs Apply

More than 1200 games

Licensed by the UK Gambling Commission

Fast, Secure and Easy Payment Methods

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Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

.

18+ only T&Cs Apply

Trusted

Bonus

100% bonus up to £200

Free spins

X

  • Big variety of casino games
  • Four-tiered VIP programme available
  • Well-made app for both iOS and Android

18+ only T&Cs Apply

Great site design

400+ gaming titles

Friendly customer support agents

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

100% bonus up to £200

18+ only T&Cs Apply

Trusted

Bonus

£20 Free Bonus

Free spins

X

  • 350+ games incl. slots and live dealer
  • Regular promotions
  • Exchange your loyalty points for holidays

18+ only T&Cs Apply

Over 200 games on the mobile app

Wide selection of live games

Exclusive Grosvenor poker app

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

£20 Free Bonus

18+ only T&Cs Apply

uusi

Bonus

Bonus Value Bonus Primary title

Free spins

20 Primary title spins

18+ only T&Cs Apply

Regular promotions for new and returning players

Competitions and prize draws

Available to access internationall

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

Bonus promo title

18+ only T&Cs Apply

Trusted

Bonus

Free bets and bonuses on sign-up

Free spins

X

  • Range of customer support options
  • Cash out feature
  • Mobile apps for Android and iOS

18+ only T&Cs Apply

Large selection of promotions

Generous welcome bonus

High quality user interface

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

Free bets and bonuses on sign-up

18+ only T&Cs Apply

Trusted

Bonus

200% up to £500 on 1st deposit

Free spins

X

  • High payout rate (96%+)
  • More than 25m players
  • High-quality games software

18+ only T&Cs Apply

Regulated and licensed by several establishments i.e. UK Gambling Commission, Gibraltar Regulatory Authority etc.

Two VIP Reward Programs based on accumulating comp points.

In-play betting and Betting App available for Android and iOS devices.

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

200% up to £500 on 1st deposit

18+ only T&Cs Apply

Trusted

Bonus

150% Welcome Bonus

Free spins

X

  • 550+ Games incl. slots and live dealer
  • 24/7 Customer Support
  • Mobile Casino

18+ only T&Cs Apply

Multi award-winning casino

Games from numerous top developers

Highly rewarding loyalty programme

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

150% Welcome Bonus

18+ only T&Cs Apply

Trusted

Bonus

Amazing promotional offers and free spins!

Free spins

X

  • Top rated casino games
  • Games from many top developers
  • Great mix of slots, roulette and live casino

18+ only T&Cs Apply

Regular promotions for new and returning players

Competitions and prize draws

Available to access international

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

Amazing promotional offers and free spins!

18+ only T&Cs Apply

Trusted

Bonus

X

Free spins

Up to 500 Free Spins

  • VIP Rewards Program
  • Compatible with Desktop and Mobile Devices
  • Leading Live Casino

18+ only T&Cs Apply

More than 1200 games

Licensed by the UK Gambling Commission

Fast, Secure and Easy Payment Methods

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

.

18+ only T&Cs Apply

Trusted

Bonus

100% bonus up to £200

Free spins

X

  • Big variety of casino games
  • Four-tiered VIP programme available
  • Well-made app for both iOS and Android

18+ only T&Cs Apply

Great site design

400+ gaming titles

Friendly customer support agents

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

100% bonus up to £200

18+ only T&Cs Apply

Trusted

Bonus

£20 Free Bonus

Free spins

X

  • 350+ games incl. slots and live dealer
  • Regular promotions
  • Exchange your loyalty points for holidays

18+ only T&Cs Apply

Over 200 games on the mobile app

Wide selection of live games

Exclusive Grosvenor poker app

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

£20 Free Bonus

18+ only T&Cs Apply

Trusted

Bonus

Spend £10 get £60 free

Free spins

X

  • Free Spins Lounge
  • Customizable tools
  • Cashback Blackjack

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Player’s Club

Fun and fair-to-play games

Huge selection of live casino and table games

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Payment Method:

Apps & Devices:

Welcome Bonus:

Spend £10 get £60 free

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Bonus

Up to £1500 + 100 Bonus Spins

Free spins

X

  • Multilingual Casino
  • Live Casino
  • Licensed and Regulated by Three Gambling Bodies

18+ only T&Cs Apply

Wide Range of Games

Rewarding VIP Club

Generous Welcome Package

Promo code:

Not Requierd

Payment Method:

Apps & Devices:

Welcome Bonus:

Up to £1500 + 100 Bonus Spins

18+ only T&Cs Apply

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Bonus

£10 Bonus

Free spins

30 Free Spins

  • Games to suit every taste
  • Licensed by the UK Gambling Commission
  • Mobile Casino

18+ only T&Cs Apply

200+ titles available

24/7 customer support

Very fast and easy banking

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Payment Method:

Apps & Devices:

Welcome Bonus:

£10 Bonus

18+ only T&Cs Apply

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Bet £10 & Get £30 In Free Bets

Free spins

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  • Big bonuses offered
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Massive bonuses just for signing up and depositing

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Payment Method:

Apps & Devices:

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Bet £10 & Get £30 In Free Bets

18+ only T&Cs Apply

What Are Online Slots?

Online slots are digital versions of the popular coin machines of old. Remember those Vegas machines on floors with clanking coins and jackpots? Online slots are the natural evolution.

Since their invention, online slots have evolved in the same way video games did in the past few decades. The result is a stunning variety of themes and constant innovation in regards to game features that have made online slot machines the biggest game in the online gambling industry.

Types of Slot Games

Join a slot casino and you’ll find different types of slot games online. We can easily divide them into three groups – classic slots, modern video slots, and jackpots.

· Classic slots usually have three reels and are a bit archaic just like their predecessors. That’s only at first glance – some classic slots may feature simple, but high-paying features.

· Video slots are the true successors to coin machines. They come in a variety of shapes and sizes and different themes. Many video slots feature thousands of ways to win and sky-high payouts that turn heads.

· The real mind-blowing sums of cash are available in progressive jackpots. Jackpot slots can feature a fixed or progressive jackpot. The latter doesn’t have a cap and can possibly grow up to several million coins before a player wins it on a single spin.

How to Win on Online Slots

Online slots are a game of chance, so we don’t have a strategy that will help you win more. This isn’t blackjack or poker – there are no skills you can hone. However, if you have Lady Luck beside you, slots can be quite profitable, even on a penny spin.

Online Slot FAQs

Are slots available for free?

Yes, you can play most video slots for free. UK Online Casinos strongly recommends giving slots a try for fun before you splash the cash and win real money. It will give you a chance to get acquainted with a slot’s features and allow you to have some fun. We all deserve it.

Can I earn free spins in slot casinos?

Yes, the best slot casinos on our list have plenty of free spins bonuses. Additionally, you can earn free spins in a slot’s bonus round. If you’re lucky, you can win a big sum of cash with your free spins, so make sure to put them to good use.

Do I need to download slots to play them?

While many video slots come in the form of an app, most slot sites run on an instant-play platform that allows you to spin slots from your browser.

What’s RTP?

The RTP (Return to Player percentage) is a term online casinos use to describe the percentage of wagered money a slot machine will pay back to players over time.

Are online slots safe to play?

Online slots are as safe to play as the casino of your choice. Make your pick from our top-rated slots sites page and you can spin safely and securely.

How much can I win on online slots?

That depends on how lucky you are. If you spin a progressive jackpot with millions of coins on offer, you can become a slot millionaire on a single spin.