BEST SLOT SITES

The Best Slot Sites 2021. We’re home to the best slot sites online and feature the very best casino sites to play online slots.

When it comes to playing the best online slots, we’ve impartially reviewed and critiqued every Slot Site online to recommend a genuine choice of best slot sites for a range of topics. We’ve covered the best slots, best bonuses, best new casinos and the ultimate, Top 10 Slot Sites online!

Best Slot Sites – March 2021

Here are the Best Slot Sites for March 2021! We’ve reviewed hundreds of online casinos that specialize in slots entertainment to bring gamers an honest collection of the very best slot sites online.

100 Free Spins for €/$10!
260 Bonus spins on Book of DeadT & C Apply
200 Free Spins + $200 Casino BonusT & C Apply
1x Free Bonus Feature or Free Spins Round!
90 Free Spins No Wagering!T & C Apply
10 Free Spins No Deposit No WagerT & C Apply
100 Spins No Deposit + 500 Free Spins!T & C Apply
100 Starburst Spins - Play Instantly!T & C Apply
100 Spins Bonus & €£$ 250 Slots Bonus!T & C Apply
100 Free Spins No Deposit + 900 Spins!
200 Free Spins + €/£/$1200 Bonus!T & C Apply
25 Free Spins + £/€/$100 Casino BonusT & C Apply
300 Free Spins + £/€/$1,500 Welcome BonusT & C Apply
€$1,500 Slots Bonus + 150 Spins!

Choosing The Best Slots Sites 2021

Choosing a slot site can be a struggle when you’re looking for the very best as there are thousands to choose from. To make things even more complicated, the title of ‘The Best’ is subjective to a player’s personal preference, bonus, country and game provider. For these reasons, we’ve dedicated our entire site to sourcing the ultimate casino experiences for a range of slots entertainment needs.

Best Slot Site Contenders

Check out all of our slot sites below and discover why each of these casinos has made it as best slot site runner-up.

Slottyway Casino: 60 Free Spins No Deposit Bonus

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Slottyway Casino

60 Free Spins No Deposit Bonus

Come and check out this super Slotty Casino and you'll get a No Deposit Bonus with 60 Free Spins on Book of Dead

Plus there's up to €3,000 in casino bonuses up for grabs with your first three deposits made here, starting with a 200% Match Bonus!

Slottyway Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.7

Slottyway Casino Review

This is about as good as slot sites get, there’s a huge range of top games here and some massive bonuses to claim. With great added value provided by tournaments, lotteries and reload bonuses, plus you’ll sign up and get a no deposit bonus and huge first deposit bonuses here.


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CosmicSlot Casino: 20 Free Spins No Deposit Bonus

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CosmicSlot Casino

20 Free Spins No Deposit Bonus

Come and leave the worries of Earth with this space-themed casino today and claim your No Deposit Bonus with 20 Free Spins on Sign Up!

Plus you can get massive rewards when you add funds here, with big match bonuses and 200 free spins to collect

CosmicSlot Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.8

CosmicSlot Casino Review

Come and check out this intergalactic casino that brings you over 3,100 games, a massive live casino and plenty of great value promotions! You can deposit with Bitcoin, Litecoin and Ethereum here too… Sign up today and claim your No Deposit Bonus!


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Casino Superlines: 20 Free Spins or €5 Free No Deposit Bonus

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Casino Superlines

20 Free Spins or €5 Free Cash with No Deposit

Casino Superlines is offering you a choice of No Deposit Bonuses on sign up... You can take either 20 Free Spins or €5 Cash

Plus when you make your first deposit here you'll get a 400% Match Bonus giving you five times you starting balance to play with

Casino Superlines
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.6

Casino Superlines Review

This is a fun casino that offers daily bonuses from the Wonder Wheel and a tasty game selection including the biggest slots and multiple Live Casino providers. Come and sign up today and take your pick of No Deposit Bonuses!


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Twin Casino: 500 Free Spins + $€200 Bonus

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Twin Casino

200 Free Spins + $200 Casino Bonus

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Twin Casino has been around for a few years now and they aren't going anywhere with some of the best games you can find anywhere and huge bonuses

Check out this hot casino from Oring and you will get 200 Free Spins + $200 in Casino Bonuses

Twin Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.6

Twin Casino Review

Twin Casino is packing twice as much as your regular casino, this is a really fun place to play a huge amount of games whilst benefiting from their awesome bonuses.


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Yako Casino: 10 Free Spins No Deposit Bonus

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Yako Casino

10 Free Spins No Deposit Bonus

Come and check out the casino that juggles a great game selection with huge bonuses and you'll get 10 Free Spins with No Deposit on sign up!

Make your first deposit and you'll get another 99 Free Spins, plus your funds doubled up to £/€/$99!

Yako Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.5

Yako Casino Review

Come and check out this great casino that is open for players all over the world including UK, with a great game selection, large live casino and extra games like Bingo, Lotto and Slingo offered! Sign up today and get your 10 Free Spins with No Deposit Needed!


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Casombie Casino: €500 Bonus + 100 Free Spins

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Casombie Casino

€500 Bonus + 100 Free Spins

When you sign up for hunting brains and jackpots here at Casombie Casino you'll get a huge choice of bonuses...

Our pick of the bunch in the Nurse's Welcome Bonus that gives you 100 Free Spins as well as a 100% Match Bonus up to €500!

  • Play over 2,700 games including some of the best slots around!
  • Casombie Casino Login: www.Casombie.com
Casombie Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.8

Casombie Casino Review

We love this fun new casino that blends zombie missions with the best games. You can deposit with cryptocurrencies, get instant cashouts and big bonuses here, with a selection of new player bonuses to choose from!


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Queen Play Casino: 100 Free Spins + £/€/$200 Bonus

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Queen Play Casino

100 Free Spins to use on a range of great slots

Come and take your seat on the throne at Queen Play Casino and get a huge welcome bonus!

First deposits are rewarded with 100 Free Spins on a big selection of slots as well as a 100% Match Bonus!

  • Play over 700 Games including Scratch Cards and a Big Live Casino
  • Queen Play Casino Login: www.QueenPlay.come
Queen Play Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.4

Queen Play Casino Review

Come and take the throne at Queen Play Casino today and you’ll get to wear the crown and rule over a huge amount of great slots and casino games. Sign up and get 100 Free Spins to use on a great range of top slots.


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GreenSpin Casino: 10 Free Spins No Deposit Bonus

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GreenSpin Casino

10 Free Spins No Deposit Bonus

Come and get a taste for GreenSpin Casino today with a 10 Free Spins No Deposit Bonus!

Plus there are massive rewards when you deposit here, with up to 300 Free Spins when you add funds for the first time

GreenSpin Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.7

GreenSpin Casino Review

Come and check out this fun new casino that has some of the best slots and one of the most comprehensive collections of casino games we have seen in some time. Sign up today and you can get a No Deposit Bonus!


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Boo Casino: 20 Free Spins No Deposit Bonus

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Boo Casino

20 Free Spins No Deposit Bonus

Come and check out Boo Casino today and we promise you this great welcome bonus won't scare you away...

You'll get 20 Free Spins on Sign Up, plus huge rewards when you make your first deposits!

  • Play over 2,000 games, with new titles added each week!
  • Boo Casino Login: www.BooCasino.com
Boo Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.7

Boo Casino Review

This casino offers a great selection of games, big bonuses and a solid platform that works well on all kinds of devices. Sign up today and you can get a No Deposit Bonus and much more when you add funds!


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Gate777 Casino: 50 Free Spins No Deposit Bonus

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Gate777 Casino

50 Free Spins No Deposit Bonus

Come and check out this brand new offer from Gate777 Casino where you'll get a huge No Deposit Bonus!

Check in today and you'll get 50 Free Spins on Sign up! Plus you can get €/$1,000 in bonuses + 100 more free spins when you deposit here

Gate777 Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.6

Gate777 Casino Review

Come and check out this fun casino where you can play over 1,200 games and slots including live casino games and much more. Sign up today and you’ll get a new No Deposit Bonus!


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4Stars Games Casino: 20 Wager Free Spins + More!

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4Stars Games Casino

Get 20 Wager Free Spins + €300 in Bonuses!

Remember Wagering Requirements?! Well, 4Stars Games Casino is blasting you off the face of earth to a place where they no longer exist!

Sign up today and claim your welcome bonus with €300 in added cash as well as Free Spins!

4Stars Games Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.7

4Stars Games Review

Come and blast off to another dimension where the bonuses are wager free and the games are awesome! Sign up today and claim your bonus package with Free Spins on Starburst and much more.


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MegaSlot Casino: €100 Bonus + 100 Free Spins

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MegaSlot Casino

Get a 100% Match Bonus Plus 100 Free Spins!

Sign up for MegaSlot today and claim a Mega Bonus with a 100% Match Offer doubling your initial funds, plus 100 Free Spins thrown in

To get this great bonus, just sign up with our link today and deposit from just €/$20!

MegaSlot Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.4

MegaSlot Casino Review

This place has a bunch of great perks, there’s good value promotions, a huge VIP scheme, top brands and a solid game selection, plus you can get instant cashouts! Sign up today and claim your 100 Free Spins and double your first deposit.


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Wheelz Casino: 20 Free Spins No Deposit Bonus

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Wheelz Casino

20 Free Spins No Deposit & 100% Match Bonus

Sign up for this wheely great casino today and you'll get 20 Free Spins with No Deposit Needed!

Plus make your first deposit and you'll get a huge match bonus and another 100 Free Spins!

Wheelz Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.7

Wheelz Casino Review

This brand new casino is coming racing in with David Hassellhof handing out huge prizes the more you play their huge collection of slots and games! Sign up today and get a no deposit bonus and much more when you add funds.


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Rizk Casino: 10 Free Spins No Deposit No Wager

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Rizk Slot Site

10 Free Spins No Deposit No Wager

T & C Apply

Captain Rizk needs you! Join forces with this powerful casino and you will get rewarded with the best type of welcome gift there is...

New players will get a spin of the Wheel of Rizk where the minimum you will walk away with is 10 FREE NO DEPOSIT, NO WAGER SPINS!

Rizk Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.7

Rizk Casino Review

We love this unique casino, they have some amazing stuff that you won’t find anywhere else like the Rewards program that revolves around the super fun Wheel of Rizk that is packed with awesome prizes and that’s very exciting to spin. They have a nice selection of games and a great live casino so you will be happy with the Rizk game selection whatever you are looking for.


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Neon Vegas Casino: €/$500 Wager Free Bonus

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Neon Vegas Casino

€/$500 Cash Bonus!

Check out this awesome new casino from BetPoint and you can get a massive bonus!

Make your first deposit here and you can earn 500% back as a bonus with play in the first two days here!

Neon Vegas Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.7

Neon Vegas Casino

Jump into this brand new casino and you can claim a huge cash bonus when you make your first deposit! Play over 600 top games from the best providers around and unlock your 500% Bonus!


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Fortune Jackpots Casino: 100 Free Spins + More!

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Fortune Jackpots

£100 Bonus + 100 Free Spins

Come and check out the casino where fortune favours the brave new players that sign up and you'll get 100 Free Spins with your first few deposits here!

You'll also get 50% Match Bonuses to go alongside your free spins on slots like Starburst, Fire Joker and Book of Dead!

Fortune Jackpots Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.4

Fortune Jackpots Review

Check out this high-quality casino from Aspire Global International that hosts over 800 top games and slots, with a large live casino and scratchcards. You can get a whole bunch of bonuses when you sign up, including free spins and match bonus offers.


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Pots of Gold Casino: £/€/$300 Bonus + 50 Free Spins

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Pots of Gold

25 Free Spins with First Deposit + More!

Come and check out this lucky casino that is giving away free spins and more when you sign up!

You'll get 25 Free Spins with your first deposit to use on Gonzo's Quest and you can go on to claim up to £/€/$300 in bonuses and another 25 Free Spins

Pots of Gold Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.5

Pots of Gold Casino Review

Check out this fun casino from ProgressPlay which has over 800 slots and games and a few other hidden gems inside. You can get huge promotions too, including your sign up bonus where you’ll grab free spins on slots like Gonzo’s Quest and Reactoonz.


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Rainbow Spins: Up to 500 Free Spins on Irish Pot Luck

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Rainbow Spins

Up to 500 FreeSpins on Irish Pot Luck!

Sign up for this boost of colour in the shape of Rainbow Spins and you'll get a pot of gold to open when you deposit here for the 1st time...

Inside you'll get a guaranteed prize with up to 500 Free Spins and Amazon vouchers up for grabs

Rainbow Spins
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.5

Rainbow Spins Review

A pleasant mix of Slots and Bingo games with a dash of table games, Rainbow Spins is here to bring a boost of colour to your iGaming life. You can play over 750 games here and when you sign up you’ll get a Pot of Gold where you can win yourself up to 500 Free Spins!


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Lit Wins Casino: Up to 500 Free Spins on Starburst!

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Lit Wins

Up to 500 Free Spins on Starburst!

Check out this brand new casino and unlock your Lit Chest with a deposit from just £10 and you could get up to 500 Free Spins on Starburst!

Everyone will win something, none of these chests are empty, so are you feeling lucky?

LitWins Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.5

Lit Wins Casino

Check out this latest instalment from Jumpman where you can access over 500 games with a huge selection of promotional offers. Sign up today and unlock your Lit Chest which could have up to 500 Free Spins inside!


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Race Casino: £/€/$100 Bonus + 10% Cashback!

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Race Casino

£/€/$100 Bonus + 10% Cashback

Start your engine with Race Casino and you'll get a huge boost with your first deposit! Sign up and get double your initial funds with the 100% Match Bonus offer

That means you can get up to £/€/$100 to play with + you'll get 10% Cashback, always!

Race Casino
  • Slot Site Design
  • Originality
  • Online Slots
  • Slots Bonus
4.7

Race Casino Review

From the casino giants L&L who have brought us award-winning casinos, this is their latest offering and it’s in pole position for 2020 casino of the year. You’ll find great games, a fast website, fantastic support and a huge welcome bonus with the ability to double your funds and get 10% Cashback on losses!


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Best Slot Sites FAQ

How Do I Chose The Best Slot Site?

Choosing the best slot site for you is all down to personal preference. All of our recommended sites has passed a rigorous review procedure to ensure they meet the highest quality gaming standards online. Choosing one of these sites will ensure you are playing at the best!

Best Slot Sites










  • Best Slot Sites

5









About Best Slot Sites

Best-SlotSites.com was set up to help slot fans discover the very best casino sites for slots entertainment. With a range of topics covered, players can find the best slot sites for various game providers, bonuses, years and more.

Which Slot Sites Are The Best?

Coming to terms with what makes a slot site the best is important. In our opinion, the Best slot sites must satisfy these factors at a bare minimum

(a) how many online slots they have and the variety of game providers,
(b) whether they feature the most popular online slots and games,
(c) a fair welcome bonus that has a reasonable wagering requirement (or none),
(d) whether they offer a bespoke HD slots gaming platform,
(e) around the clock support and plenty of banking options.

Best Slot Sites










  • Best Slot Sites

5









About Best Slot Sites

Best-SlotSites.com was set up to help slot fans discover the very best casino sites for slots entertainment. With a range of topics covered, players can find the best slot sites for various game providers, bonuses, years and more.

How To Choose The Best New Slot Site?

We’ve made sure to assess every new slot site as soon as they’re released in order to provide an up-to-date recommendation of Best Slot sites. We review our lists every month and make ranking adjustments based on new slot site introductions. You can visit our page of New Slot Sites to discover the best sites that have been released each month.

Best Slot Sites










  • Best Slot Sites

5









About Best Slot Sites

Best-SlotSites.com was set up to help slot fans discover the very best casino sites for slots entertainment. With a range of topics covered, players can find the best slot sites for various game providers, bonuses, years and more.

Can I Trust The Best Slot Sites?

We take into account fair gaming standards, gambling licenses, security standards and industry news to ensure the best slot sites we recommend are of the most trusted online.

Best Slot Sites










  • Best Slot Sites

5









About Best Slot Sites

Best-SlotSites.com was set up to help slot fans discover the very best casino sites for slots entertainment. With a range of topics covered, players can find the best slot sites for various game providers, bonuses, years and more.

Best Slot Sites
  • Best Slot Sites
5

About Best Slot Sites

Best-SlotSites.com was set up to help slot fans discover the very best casino sites for slots entertainment. With a range of topics covered, players can find the best slot sites for various game providers, bonuses, years and more.