online slots

Best Online Slots May 2021

If you’d have told us 10 years ago that playing online video slots would be so popular and so accessible, we’re not sure that we would've believed you. Visiting land based casinos would often result in us having a spin on a ‘one armed bandit’, fruit machine or slot machine, but we’d always find most time to play table casino games in a casino, games with dealers such as Blackjack, Online Roulette, Craps, Baccarat. Slots have always been popular however, now it's never been easier to access them any time and anywhere.

Roll on until today and you'll see that online slots are so much more than what land based casino slot machines offered us in the past. Firstly, we can play them in the comfort of our own home. Advancements in modern technology have meant that we can also play online slots anywhere we choose on our mobile devices and tablets, so long as we have an internet connection.

Also, with the wonders of such devices, comes better sound and brilliant computer screen graphics, and all of this put together has made online slots look absolutely fantastic and a lot of fun to play.

Aside from the looks, online gaming companies have made the slots a lot of fun to play, adding ground breaking and rule breaking new features, such as Gonzo’s Quests Avalanche feature or Spinata Grande’s Colossal Symbols or Mini slot machine features.

Best Rated Online Casino Sites for Slots in May 2021

Casinos Bonus Visit
Casino Planet

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100% up to £100 Welcome Bonus

200 Bonus Spins

Genesis Global Sister Casino Site Massive Games Inventory Safe & Trusted Brand PayPal & Trustly Accepted

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware®
Casino Lab Casino

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100% up to £100 Welcome Bonus

300 Bonus Spins

Owned By Genesis Global Tons of Slots Top For Live Dealer Games Safe Platform Trusted Brand

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Gambling License

18+ full T&C's apply. New players only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 30 spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Free spins valid for 72 hours from credit. Max free spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware®
Casushi Casino

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Welcome Bonus up to £50

50 Bonus Spins on Starburst Slot

Awesome Sushi Theme Sushi Train Game Superior VIP Club Popular UK Slots & Jackpots New Casino

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Gambling License

New customers only. Minimum first deposit of £20 required. Maximum promotion amount per player is £50 Bonus and 50 Free Spins. The welcome offer is not available on pre-paid card or e-wallet (Neteller and Skrill) deposits. Bonus and free spins will be credited automatically. 100% deposit bonus up to £50 bonus will be credited upon first deposit. 50 free spins will be received in 5 daily increments of 10 starting within 24 hours of first deposit. Free spins are only available on Starburst. Free spins value is £0.10 per spin. Bonus will expire 30 days after qualifying deposit. Free spins will expire 48 hours after being credited/ 18+ T&C's | BeGambleAware®
Kassu Casino

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Welcome Bonus up to £100

300 Bonus Spins

Popular Sistser Casino Tons of Premium Games Must Fall & Megaways Games Great Bonuses

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 30 Spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware®
Plaza Royal

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Welcome Bonus up to £50

100 Bonus Spins

New Casino Trusted Company 60+ Live Games New Slots Fast Payouts

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Gambling License

New depositing players only. Min. deposit £10. Max. bonus varies per deposit (see below). Bonuses that require deposit, have to be wagered 35x. 18+ T&C's | BeGambleAware®
Casimba Casino

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100% up to £500 Welcome Bonus

50 Bonus Spins

Wow Graphics Awesome Welcome Bonus Trusted Casino Company 1000+ Games

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18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution 18+ T&C's | BeGambleAware®
Fruitkings Casino

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100% Welcome Bonus up to £50

50 Bonus Spins

Dazzletag Casino Top for Slots Huge Selection of Live Games Fair Bonuses Trusted Company

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Gambling License

18+. New players only. 100% bonus on first deposit up to £50 & 100 Bonus Spins (50 spins on day 1, 25 on day 2, 25 on day 3) for Gonzo’s Quest slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expire after 48 hours. Game restrictions apply. Further Terms Apply. 18+ T&C's | BeGambleAware®
Griffon Casino

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Up to 200 Bonus Spins Welcome Bonus

Reload Bonuses & Casino Promotions

Aspire Global Casino Trusted Providers Great Welcome Bonus New Casino

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New UK depositing players only. 200 spins require 3 deposits of min. ‎£20 each and are issued as follows: 50 on 1st deposit, 50 on 2nd deposit and 100 on 3rd deposit. Spins are issued on selected games. Winnings from spins are bonus with wagering requirements 35x. Spins expire after 24 hours. Bonus expires after 21 days. Play responsibly, www.begambleaware.org. T&Cs apply. - T&C Apply 18+ T&C's | BeGambleAware®
Lottomart Games

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100% up to £100 Welcome Bonus

Free Scratchcards & Casino Promos

Wager Free Bonus Top UK Slots Trusted Company Biggest Online Lotteries

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Gambling License

New customers only. All new players can get a 100% deposit match bonus on your deposit, up to £100 - Deposit at least £10 and claim up to £100 18+ | BeGambleAware®
Casoola Casino

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100% up to £100 Welcome Bonus

200 Bonus Spins

Experienced Company Behind The Scenes Trusted Over 1300 Games Fast Cashouts PayPal Accepted

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware®
Casino Gods

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100% up to £100 Bonus

300 Bonus Spins

New Slot Games Trusted Casino Company Excellent mix of Games

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 30 Spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware®
Mr Play Casino

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Welcome Bonus up to £200

100 Extra Spins

Amazing Slots Experienced Casino Company Fast Payouts Sports Betting Fair Bonuses

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Gambling License

Applies only to new depositing players. Min deposit £10. 18+. Wagering requirement apply 35x. Offer valid for 24hr. 100 spins includes 3 deposit. See full terms apply. 18+ T&C's | BeGambleAware®
Jackpot Village

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Bonus 100% up to £500

50 Bonus Spins

VIP Bonuses Jackpot Games Trusted Company

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Gambling License

18+. New players only. 1 bonus offer per player. Min. deposit £20. Max bonus bet £5. Bonus spins on selected games only- must be used within 72 hours. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 100% match up to £500 + 50 bonus spins on 1st deposit, 25% match up to £800 + 25 bonus spins on 2nd deposit, and 50% match up to £500 + 30 bonus spins on 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus, cash & bonus spins. Terms apply 18+ T&C's | BeGambleAware®
Casino Joy

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100% up to £100 Bonus

200 Bonus Spins

Massive Games Collection Safe Casino Brand Superb Theme & Feel

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 9 days on Starburst. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware®
Hyper Casino

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£300 Welcome Bonus

Amazing Promotions & Slots Tournaments

Newer Online Casino Wacky Power Design Great Games Catalogue

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Gambling License

Terms: 18+, New customers only, min deposit £10, wagering 45x, max bet £5 with bonus funds. 100% up to £100 bonus on 1st deposit + 50% up to £200 on second deposit. Welcome bonus excluded for players depositing with Skrill or Neteller. Begambleaware.org 18+ T&C's | BeGambleAware®
Voodoo Dreams Casino

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Welcome Bonus 100% up to £50

50 Wager Free Spins

All The Famous Slots Gamification Games Super Unique Brand

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Gambling License

18+. new players only. Maximum £50 bonus. Minimum deposit: £20. Bonus wins are capped at £500. Max bet with active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. Bonus expires after 30 days if wagering requirement has not been met. One bonus allowed per person, address, device, IP. Full bonus terms apply 18+ T&C's | BeGambleAware®
Captain Cooks Casino

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100% up to £475 Bonus

100 Bonus Spins on Mega Moolah

All The Famous Games Online for over 10 years Big Jackpots

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Gambling License

Welcome offer is for new customers only. The minimum first deposit required is £5, for all subsequent deposits the minimum deposit is £10. The 100 chances are credited as a £25 bonus and players can wager 100 times at £0.25 on the Mega Moolah slot machines. A two hundred times wagering requirement applies on all bonuses and certain games contribute a different percentage to the wagering requirement. 18+ T&C's | BeGambleAware®

Different Slots from Different Providers

There are many different online casino games and slots providers and gaming companies today. Some companies such as WMS started out early and are heavy weights in providing slot machines to land based casinos. They’re one of the biggest slot machine providers in the real world, and since the start of online gambling, they also adapted to gain some market share by releasing online slots as well.

One of the most famous, and dare we say most popular online slot providers today is Swedish company NetEntertainment, or Netent for short.

They don’t have any history in the land based sphere, and in a little amount of time have positioned themselves as being the leaders for making online video slots and live dealer casinos, amassing a huge following and fan base for their online slots.

They also are the number one providers for online progressive jackpots. We’re talking about the hugely popualr Mega Fortune Jackpot Slot and Mega Fortune Dreams Jackpot Slot, which have made many over night multi-millionaires with their luxury inspired jackpot slots.

We could name many more casino software providers, such as Novomatic (Greentube), Newer quirky Thunderkick Slots, Play and Go, IGT, but we could be here all day. There are so many that also deliver good online slots. The best advice we could give you is that you should try out a slot at least once, that grabs your attention. You can even play for free by clicking any slots demo button on a casino site. That way, you’ll know for free, if it’s something you’ll like to play for real, with real money.

Branded Online Video Slots

Another well-known and popular company making brilliant slots are early birds to the online gaming scene: Microgaming, whov'e been there since day one of online casino.

They were actually the first gambling compamy to provide an online casino with software and were among the first to provide a progressive jackpot online, which is now the much loved Mega Moolah that was released in 2008.

Microgaming today are famous still for delivering modern and unbeatable slots and also delivering mammoth branded slots featuring heavyweight Hollywood names, such as their ever popular Game of Thrones Slot, Lord of the Rings Slot, Batman; The Dark Knight Rises (Progressive Jackpot) Jurassic Park Slot and not forgetting the amazing Tarzan Slot.

Free Slots Online: Free Spins Bonuses

Most online casinos will provide you with the opportunity to play free slots online. Simply load the game you like the look of by clicking the demo play from the main casino site. This will make the screen load, and the sot appear, usually with an intro to introduce you to the slot, the theme and some background information, which is usually worth watching, especially if it's a Netent Slot.

You'll see then that the balance will be loaded with free play money. But bear in mind that they're free credits or play money and not real, so any wins you make will not result in any real wins for you that you’ll be able to cash out.

Another really good way to play free slots online is by registering an account with an online casino who offer no deposit bonuses or Freespins bonuses. Some Freespins may require you to make a small deposit and some not, whilst some casinos may be able to give you some free (real) casino credit/bonus for you to spend on any casino slot or casino game that you prefer.

We personally prefer larger Freespins bonuses that often require a small deposit to activate. Why? Because we look at the long run and prefer to bet more for enjoyment and also to play for longer. If you get the right casino bonus, optimised to give you the most Freespins then chances are it will be better for you without having stronger wagering requirements that no deposit Freespins will give you.

Plus, its more real and will give you a better chance to win and cash something out. Which is what it’s all about, isn’t it?