Best Slot Sites – What Are The Top Online Sites?

best slot sites

If you are looking to find out the best slot sites including the best mobile slot sites to try out in 2021 we have you covered. Slots sites have been the largest growing market in the online gaming scene for quite some time with 1000’s different types now available online.

When it comes to playing slots online currently we are spoiled for choice between casino sites and the number of games in the market. Some are better than others when it comes to the bonuses, free spins, and slot games so we have the best guide available for all players to go through for information.

New players might find it difficult to choose the right slots site to play which suits how they like to gamble but also which slots sites are best left alone!

We have carefully chosen our favourite slot sites where we think players will have the best experience and also provide some of the best welcome offers to get you playing right away!

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888 Casino
£88 No Deposit Bonus

When looking for a good mix of bonus and slot options you can't go wrong with 888 Casino. You can get an industry-leading £88 No Deposit Bonus to play all your favourite slot games!

New players only • £88 is granted in FreePlay (FP) • FP must be claimed within 48 hrs of receiving the email and expires after 14 days • FP wins are credited as bonus and capped at £15, exc. JP win • Bonus wins are capped at £500 • To withdraw bonus & related wins, wager 30 x (bonus amount) within 90 days • Wagering req. vary by game • This offer may not be combined with any other offer • Deposit balance is available for withdrawal at any time • General withdrawal restrictions & full T&Cs apply.
Paddy Power
100 Free Spins No Wagering

Paddy Power is undoubtedly one of the biggest brands in the UK with a great reputation, especially for sports betting. The slot game side of the site is just as good plus Paddy's have arguably the best welcome offer on the market with 100 free spins, which requires ZERO wagering!

1) To take part, you must register via the registration code PGCTV1 and opt in. 2) Get SMS-verified by supplying a valid telephone number. 3) Enter the validation code received by SMS to redeem the free spins. 4) Free spins are valid on any of our daily jackpot games. 5) Free spins will expire in 10 days from receipt of the offer.
Videoslots Logo
100% Up To £200

When it comes to the choice of slot games available it doesn't get better than Videoslots with over 2200 different titles to choose from! You can get 11 wager free spins when you sign up plus a great 100% bonus up to £200!

New Players Only. Min deposit £10. Wager req 20x. Bonus Balance is paid with 10% instalments to account balance. Bonus balance is not playable. Max bet is £20. Account balance is withdrawable at any time. Upon withdrawal any remaining bonus balance is forfeited. Play responsibly.
Betfair Casino
50 Free Spins No Deposit

Betfair is another huge brand to make this list, but we prefer sticking to trusted brands on this site. Betfair is offering 50 Free Spins with no deposit required and also no wagering! It doesn't get much better than that when it comes to welcome offers!

Winnings from free spins paid as cash. Free spins expire 7 days after acceptance.
Jazzy Spins
100% Up To £25 + 60 Free Spins

Jazzy Spins is another great slots site from 888 with a huge variety of games available. You can grab yourself a 100% casino bonus if you are a new player, plus you also get 60 free spins!

First-time depositors only (+18). Valid until further notice. Min Deposit: £10. Max Games Bonus: £25. To withdraw games bonus & related wins, wager x40 the amount of your bonus. 3x 20Spins (FS). Spins are credited over period of 3 days with 20 Spins each. FS are valid on specific game for 7 days. FS wins cap: 3x £2. FS wins are granted in games bonus after all FS are used and must be wagered x40. Games Bonus wins cap: £100 + the initial bonus amount. Wagering req. vary by game. UK only. Your deposit balance (defined as Transaction Balance under our Withdrawal Policy) is available for WITHDRAWAL at any time. Country restrictions apply.
Get a New Player Bonus of up to £100

Bet365 is possibly the largest betting company in the world and active all over the globe. They offer a great casino & games section on the site with a great £100 casino bonus up for grabs! We recommend checking out this well-trusted company if you enjoy slots

Deposit min. £10. Applies to first deposit to Casino only. Max. bonus £100. 20x wagering (game weighting, table coverage and max. bet rules apply) on deposit and bonus to make the bonus balance withdrawable. Time limits and T&Cs apply.
£250 Bonus + 100 Spins

Slotnite is a great option if you love playing slots! White Hat Gaming has done a great job on this site, offering hundreds of casino and slot games to play. You can also get a £250 welcome bonus plus 100 bonus spins when you sign up as a new player!

18+. New players only. One bonus offer per player. Minimum deposit of £10, Max bonus bet £5 Bonus offer must be used within 30 days and bonus spins within 10 days, otherwise any unused shall be removed. Bonus spins are valid on the following games only: Aloha Cluster Pays, Gonzo’s Quest and Temple of Nudges and winnings capped at £50. Bonus funds are 100% of your first deposit up to £250, 50% of your second deposit up to £200, 50% of your third deposit up to £50. Bonus funds are separate to Cash funds, and are subject to 35 x wagering the total of bonus, cash & bonus spins. Terms Apply.
Wink Slots
30 Free Spins No Deposit

Wink Slots has a superb range of games and is a highly trusted UK slot brand from 888. New players can get their hands on 30 free spins with no deposit required! Great way to try out the site before making any deposits!

New UK players only. Register & get up to 30 Free Spins [FS]. 10 FS*3 over 3 days upon login. Must be claimed by 23:59 on day of grant; wins set at £3–£12 in bonus funds. Non-funded player balance capped at £100 exc. jp. wins. Welcome Offer: Min £10 deposit, get 100% Bonus (max £100) + 30 FS. Must be claimed within 7 days. Bonus wins capped at £400 exc. JP wins. General: FS valid on specific games & valid for 7 days once claimed. FS wins granted in bonus after all FS used. Bonus valid on specific games only. Wagering req. apply: 30x bonus funds (vary by game); T&Cs Apply.
Mr Green Casino
£100 Bonus + 50 Free Spins

Mr Green boasts a great selection of slot games for players to choose from plus a £100 matched deposit bonus and 50 free spins on everyone's favourite game Starburst!

New UK customers only. Opt in required. 1x per customer. Min. £20 deposit. 1st deposit only. Selected games only. Max. Bonus £100 with 35x wagering and 50 Free Spins at £0.20/spin on Starburst™ with 35x Wagering. Free Spins and Bonus credited once deposit amount has been wagered on slots. Bonus and Free Spins expire 7 days after issue. Game weighting, game, country, currency, player restrictions and terms apply.
Betfred Casino
Stake £10 Get 50 Free Spins

Betfred has been around for many years in the UK, especially with high street shops. They offer a great slots and games section on their website, plus you can get 50 free spins with no wagering when you deposit and stake £10!

New Casino customers only. £10 min transfer & stake on slots within 7 days. Min 5 game rounds. Max 50 Free Spins on selected games, credited within 48 hours of qualifying. Free Spins expire after 7 days. E-Wallet & Pre-Paid card restrictions apply. SMS validation may apply. Full T&Cs apply.
Gala Spins
£20 Bonus + 30 Free Spins

Gala is a well-known brand in the UK and has been around for years, mostly in the bingo scene, but the slot site Gala Spins is worth checking out if you like playing slot games! New players can get a £20 Bonus and 30 Free Spins when they deposit £10

18+. New customers only. Certain countries only. Min deposit and spend £10 cash on any game = £30 welcome bonus. 20 x wagering reqs apply. Bonus valid for 7 days. T&Cs apply.
Dr Slot
20 Free Spins No Deposit Needed

Dr Slot is a great slots site with its own list of games on offer, it may not have the same selection as the others, but you can try out this site completely free with the No Deposit offer available!

18+. New players only. Up to 20 (18p) free spins on Fire and Gold. Expires after 7 days. Winnings subject to 40x wagering requirement. Max withdrawal from bonus winnings £50. T&Cs apply.
Amazon Slots
Get Up To 500 Free Spins

Amazon Slots may be the most popular site from Jumpman Gaming at the moment, with over 500+ games available. Like many other sites from this brand, you can spin the Mega Reel and try your luck at winning 500 Free Spins!

New players only, min deposit £10.00, £8 max win per 10 spins, max bonus equal to lifetime deposits (up to £250), 65x wagering requirements and full T&Cs apply.
Costa Games Logo
5 Free Spins No Deposit Required

Costa Games is a must-try site for slot fans especially with its range of games and its No Deposit free spins offer!

New players. UK players only. Register to get 5 Free Spins [FS] on Irish Luck. Must be claimed by 23:59 & valid for 7 days once claimed. FS wins granted in bonus after all FS are used; wins set at £0.1-£2.5. Reg bonus wins capped at £100 exc. JP wins. Welcome Offer: 1st depositors only. Min deposit £10, get 100% bonus (max: £50) plus 100 FS (granted 25 FS over 4 days upon login) on specific games; FS valid for 14 days from granting date; wins set at £0.25-£6.25 per 25 FS. Bonus wins capped at £100 exc. JP Wins. General: Bonus valid on specific games only. Wagering req. apply: 30x bonus funds (vary by game)
Space Wins
20 Free Spins No Deposit Required!

Space Wins was built with the slot player in mind and offer a great 20 No Deposit Free Spins offer! We recommend checking out this popular Jumpman site if you enjoy playing slots!

New Players Only, No Deposit Required, Valid Debit Card Verification Required, £8 Max Win Per 10 Spins, Max Bonus Conversion £50, 65x Wagering Requirement, Full T&Cs apply
Foxy Games
150 Free Megaways Spins

Foxy Games, the sister slot site to the famous Foxy Bingo, is a great option if you are looking to play your favourite slot games! Get your hands on 150 Megaways spin when you deposit £10 at this slot site!

18+. New players only. Max 150 spins over 3x50-spin bundles. Min £10 dep & spend for each bundle. Free spins used on selected games only. Spin value £0.10. Wins credited as bonus, 10x wag within 14 days. Payment method restrictions & T&Cs apply.
Fever Slots
20 Free Spins No Deposit

Fever Slots is another on the list from Jumpman, but they do make some excellent slot sites! This site is offering 20 Free Spins with no deposit required, so you can test out the site without having to part with any cash!

New Players Only, No Deposit Required, Valid Debit Card Verification Required, £8 Max Win Per 10 Spins, Max Bonus Conversion £50, 65x Wagering Requirement, Full T&Cs apply
50 Free Spins No Deposit Needed

Cashmo Casino is very similar to Dr Slot, coming from the same company. The slot game choice isn't as big as other sites, but there is a big jackpot linked between all the games, and you can also try this site without making a deposit! 

18+. New players only. No deposit required. Up to 50 locked free spins (FS18p) on sign up, usable on Rainbow Slots only. Expires 7 days after registration. All winnings paid as bonus credit. Bonus credit has 40x wagering requirement. Max withdrawal without depositing is £50. You may withdraw the funds in your cashable credit account. T&Cs apply,
Sun Vegas

The Sun Vegas is a fairly new slot site with hundreds of games available. Much like Sun Bingo, it's a well-respected site with lots on offer for new and existing players. You can get a 100% welcome bonus up to a huge £300 at this slot site, great for the large deposit players!

100% bonus up to £300 on your first deposit · New Customers Only · Min Deposit £10 · 50x WR · Offer must be accepted within 72 hours. Bonus Valid for 30 Days · Max bet restrictions apply · Bonus can't be withdrawn. Bonus can only be spent on Slot Games · Skrill/Moneybookers and Neteller are not valid for this promo · Real money balance can always be withdrawn T&Cs Apply
Dove Slots Logo

Dove Slots is a great slot site from Jumpman with a massive range of slot games to choose from. Try your luck with the Mega Wheel and win some free spins!

New players only, min deposit £10.00, £8 max win per 10 spins, max bonus conversion equal to lifetime deposits (up to £250), 65x wagering requirements and full T&Cs apply.

We have put together what we think is the ultimate slots site guide available online where we cover all aspects of deciding where is best for you to play online. In this guide, we go over the best slots sites on the market including the best slots we recommend new and experienced players to try out.

Why Play Slots Online?

Now we live in the digital age where everything is available at our fingertips this has allowed players to access slots on their mobile phone, tablet, or PC without the need of visiting the local casino. Time may play a factor in rather visiting your favourite slot sites on your device as this proves much easier plus the ability to access many more games than in the local bricks and mortar casino.

The online aspect allows a player to log in as and when they want and start playing. Some claim that this eliminates the fun of pressing buttons or pulling the lever from these games, but to many people, they enjoy being able to play slots from their home or out on the go.

The introduction of mobile slots games has allowed us to play our favourite games from anywhere and on the device of our choosing. We talk more about the mobile aspect to slots in our article going into more detail.

Return To Player (RTP) percentages are a crucial point that many individuals ignore when looking at playing some online slots. Such numbers are much higher online than in most casinos and provide the player with a much better win rate.

Most slots have an RTP of between 93 to 98 percent, to bring this into some sense. The majority of land games that you play would be about 90%, but it’s reasonably normal to see a respectable number down to 80%, which is a big difference, giving the casino and these games an extremely high edge.

New slots are released every week with gaming providers as the market has grown year on year so you can always expect news slot games to try out at your favourite online slots site.

Online Slots Bonuses and Free Spins

The biggest draw some online slot sites have with players can be the welcome bonus on offer or free spins offer. Almost all casino sites and slot sites you find online will have something for new players to choose from when they sign-up. The industry has grown so much over the years we now have thousands of choices to choose from when it comes to playing slots online

Each different slot site will usually offer a different bonus from the other to try to entice players in to play on the games they have available. Some slot sites fall under the same parent company so offers can be similar or sometimes identical. The wagering requirement for free spins or slots bonuses will vary from site to site so it’s always good to check the terms before getting locked into any new welcome offers.

All bonuses or free spins at casinos or slot sites will come with some sort of wagering required before any funds can be withdrawn when claiming welcome bonuses. There is never any free money at online casinos although you can sometimes get no deposit bonuses at some sites yet again this will still require wagering before cash can be withdrawn.

If you decide to take up the welcome offer from the casino wagering requirements will be required as mentioned above and these can range quite a bit from casino to casino with as little as x10 to x65 on the Jumpman Gaming slots sites.

As an example of wagering if you made the first deposit of £100 at your new casino and they gave you a £100 bonus with x10 wagering you would need to wager the bonus to the amount of £1000 before with can be withdrawn as cash.

When wagering your bonus not all games contribute the same amount to wagering so something like Blackjack would not contribute as much as playing slots which usually comes with a 100% contribution rate. Some online casinos and slots sites will have excluded slots due to the high RTP so always worth checking in the terms which slots are eligible to be used.

Welcome offers or bonuses will often come with a time limit required to wager the bonus before it is removed from your account so always check what the timescale involved is when wagering a bonus. This will vary from site to site which can be as little as 48 hours to 30 days with some casinos.

When claiming welcome offers in the format of free spins these generally allocated to a particular slot game only so much easier to understand what’s required it’s a case of checking the wagering requirements and timescale given to complete it.

You can also find limits of the stake size or maximum win when it comes to both casino bonuses and free spins this is also a term to check out as you might hit a big win to find out it’s over the maximum win limit or when using a stake size too high the casino may remove the bonus from your account.

Mobile Slot Sites

Over the years we have all moved more towards mobile for most of our internet-based needs and so have the online casino games providers with all games now being made for mobile-first then adapted to fit the browser-based casinos. With this being the way games have been designed you will not notice much difference when playing on your laptop or PC from playing the online slots sites on your mobile phone or tablet.

With the huge range of games now across all the various casino sites these are all designed for mobile platforms and browser-based systems. This means that a variety of games can be accessed across lots of different devices including iOS, Android, Windows, and other mobile devices.

When it comes to getting stuck into playing mobile slots sites you have a couple of options available at Online Slot Sites you can use a dedicated mobile app if they offer one which can usually be downloaded directly from the site or from the app store and the other option is to play directly on your mobile browser. We have founds both options to be great so it’s a user preference with this.

Best Slot Sites with Low Wagering Requirements

As mentioned above on casino bonuses come with various different wagering requirements and some are very high so it’s always the best option to find a welcome offer with lower requirements so you can have a good chance at withdrawing the cash!

Before you start on a new welcome bonus it’s always recommended to work out how you will complete the wagering requirements given by the casino. Most often you will have at least 30 days to complete this so this gives the player lots of time but in the cases of shorter timescales, you could run out of time.

If you are brand new to online slots sites we would recommend going for the lower wagering casinos to give you a better chance of wagering in time and converting your bonus of free spins into cash. 

It’s best to have a plan when taking on a new bonus as to what game and how long it will take roughly to complete the wagering. On lower stakes such as 10p or 25p having to wager £1000 might take a very long time so make sure you have enough time to tackle the task.

For the more risky players who take on bigger spins, they might not have the same issue but on lower stakes, this will certainly take more time so proceed with caution.

If you can find a casino with a 30 days timeframe to wager the welcome bonus this is the best case as it will provide more than enough time to get wagering done plus you always have the option of auto spin if you don’t mind leaving the slot to run on autoplay.

The wagering amount is the main thing to check on your bonus with the lower amount being the better but around 30 times is a reasonable figure online at the moment but there are options for lower amounts such as 10 or 20 times. Another big thing to check on the wagering required is if it includes your deposit and welcome bonus as this will double the amount required, ideally you want wagering requirements on the bonus only.

Lastly, check which games you can use to wager the bonus as more often than not some games are excluded which are mostly table games due to the very high RTP involved but slots we have found are 100% in most cases.

Play Free Slots Online

Most game developers have free games that players can try out before having to deposit real cash to play. This can give players a feel for how the games perform and any features they may like or not like before playing for real. This is a great choice for the new slots players to get accustomed to how the games function and how to navigate the interface of each slot game.

Unfortunately for UK players, this has been banned by the UK Gambling Commission but anyone outside the region may still find places where they can try slot games for free. The UKGC found this to be an issue amongst problem gamblers so it was removed from all the licensed UK online casinos and slots sites.

We have found websites that are not actual casinos may still offer the chance to try out free demo slots but verification will be required before trying them. No licensed casino should be promoting the chance to play free slots.

For all the players outside of the UK, you could have the opportunity to try free slots games at your favourite online casino so worth checking if they have that option as its great to try before you buy!

High Payout Slot Sites

Almost all online slot sites or online casinos will have a big enough variety of slots to find the higher payout games. When looking at your selection of slot you want to play the best thing to be looking at is the payout for that game or often referred to as RTP on most casino sites which translates to Return To Player. This is the expected return to player for the money played on the slot game so as an example if the slot you are playing has a 95% RTP you would expect 95p back for every pound wagered.

The RTP is based on a very large sample size over thousands of spins which will come to the conclusion of the percentage figure but this doesn’t take into consideration the volatility of the slot or variance as it’s most commonly referred to. So with the slot having its RTP figure, it will also come with a high, medium, or low variance which relates to the chance of winning per spin.

Some slots may return money back to the player on nearly every spin and others may have zero return for 50 spins then a big win which would equate to the same as the slot that returns money frequently bringing the RTP to a similar percentage but they would rank very differently on the variance scale.

So players who prefer higher variance slots are looking for the big wins which are often found at the slots with the larger multipliers versus the low variance slots which also are popular among players when it comes to things like wagering bonuses.

For the player looking for the best payouts, it would make sense to go after the highest RTP slots as this will return more over the long run compared with the lower RTP slots but we need to consider the variance when making a decision otherwise nobody would play the games if they got nearly all their money back on every spin with no real big wins.

The RTP varies from around 92% up to 99% in some cases with the higher figure going to return more to the player over 1000 spins but more often than not the very high RTP slots have very low variance which means the high payouts don’t really happen often. For the players looking to hit the bigger slot wins and more risk-averse, we would recommend checking the max multiplier as this is usually a good indication if the slot game can pay big but it will come with high variance.

With some online slots, it’s possible to mix up the RTP and variance by choosing the stakes or the number of pay lines you would like to use on that particular slot.

You will find most of the super-high jackpots games are low in RTP such as Mega Moolah but as a trade-off, there is the chance that the game can payout into the tens of millions if you hit the jackpot so low RTP slots aren’t always to be avoided it depends on your goals when playing the slots. If you wanted to wager a new welcome bonus which may take thousands of spins it would make sense to go towards the really high RTP slots where over the wagering of the bonus it should return very well. We have noted some of the highest RTP slots below for players to try out

  • Goblin’s Cave – 99.32% RTP
  • Ugga Bugga – 99.07% RTP
  • Mega Joker – 99% RTP
  • Jackpot 6000 – 98.90%  RTP
  • Blood Suckers – 98% RTP

The Best UK Real Money Slots to Play

With the online slots game industry now producing thousands of different games, it’s hard to see what’s the best to play and which other players enjoy the most.

We have looked through the most popular slot games from various software providers to bring you what we think to be the best online slots games to play at the moment which players can’t seem to get enough of with these games being found at nearly every slots site online. 

Starburst – First up we have the most popular slot game in the UK Starburst. When you visit most online casinos you will find Starburst on the homepage and involved with any welcome bonuses or free spins offers. This game is a great place to start for anyone new to online slots with its easy to use interface and a 96.08% RTP you can see how this is so popular.

Rainbow Riches – This game holds a bit of a legendary status among the slot community and has been around for years online and in betting shop machines. Rainbow Riches from Barcrest runs at a modest 95% RTP which isn’t high but isn’t low, what it does offer is an x500 jackpot when hitting its bonus round among other bonus rounds that brings players coming back every week. 

Bonanza Megaways – Bonanza is a bit different from the others above with its megaways element giving players the chance to win an incredible x10,000 stake. This game from Big Time Gaming has been a huge hit with everyone over the past 5 or so years. It comes with a 96% RTP and the opportunity to win huge amounts hitting the right combinations many of which can be found on Youtube when looking for big slots wins.

Book of Dead – This game from Play’n Go has been a huge hit over the years much like Bonanza with its opportunity to hit the big multipliers on the bonus rounds. Book of Dead is pretty simple to understand and play compared with others with only 1 bonus round available but this is what brings the players to this game. It comes with an RTP of 94.25% which a bit on the lower end although you can win x5000 your stake so higher risk higher reward on this game.

Gonzo’s Quest – This game from Netent has taken the industry by storm and has really become a favourite amongst all the slots players. It has its own unique style and bonus rounds for players including the potential to win x3750 times your stake at Gonzo. This slot has an RTP of 95.97% which we think is very reasonable.

Mega Moolah – We couldn’t leave Mega Moolah off the list after talking about the enourmous winners it’s seen over the years all going into the millions of pounds. This slot isn’t very flashy and offers a 94% RTP which isn’t the highest but if you could be the next millionaire on this slot then it’s making the list.

Jackpot Giant – This game much like Mega Moolah has seen some massive jackpots win with it having the second biggest jackpot ever won on this game at over £10million. Again it’s not flashy and pretty basic but with the opportunity of life-changing sums of money then it’s worth a mention when looking at somewhere to play.

Break Da Bank – This slot game is very much a classic slot with not many features available for players but it’s a huge hit with the players who enjoy this setup. Break Da Bank allows the high rollers to go up to a huge £125 stake on this game! This slot from Microgaming comes with an average RTP of just under 95%

Mega Joker – Mega Joker is another classic slot much like Break da Bank and has only 3 reels so very east toofollow. The reason this slot game makes the list and is so popular among players is the super high RTP of 99% which is arguably the highest of any game available. A must-try slot for the less risky players.

The Demon Code – This is a newer slot game from Nextgen giving players the chance to win huge amounts on the multipliers Demon Code has  6 reels and 25+ symbols involved per spin. This game comes with a 96.26% RTP and players can win x12500 times their stake which is one of the highest we have seen.

South Park – South Park is one of the original branded slots made by Netent and still considered as one of the most popular slots made by this software company. This game comes with 6 different bonuses available which include different features, free spins, and much more. It has a 96.7% RTP which is up there in the higher percentages on this list.

Monopoly Megaways – Here we have another popular branded slot from the household board game everyone loves Monopoly. This slot offers a great classic feel with an interactive Monopoly board, a must-play for the original game fans. The RTP is around 96.5% for this game which we think is pretty good and players will enjoy.

Razor Shark – A new game from a relatively new developer in Push Gaming, Razor Shark takes a look at where online slots might be heading. The game allows you to adjust pay lines and also win huge sums of money from the standard game.

Online Slot Games Variations

Slot games come in many different variations and have constantly branched off into different categories over the years. With all the different types of slots available for players to choose from it’s good to understand which might best suit your style of play which could range from big jackpot type games or the more branded type slots with your favourite movie characters.

Branded Slots

Today, some of the most popular games you can play online are branded slots. These are the games connected to movies, reality shows, game shows, sports teams, and every other brand that you might think about. This type of game has been a huge hit with slots site players over the years as they often have some really unique and interesting features.

Branded titles are a bit more refined than the typical video slot, you can find. There are a few explanations for this.

The first is that considering that branded slots have the financial resources of a famous brand behind them, the budget is always much higher than a regular slot game. This means that new innovations can be encouraged and more slots games can be made.

Lastly branded games need to be of a very high standard as they are connected with the movie, TV show, etc. If any non-branded games have a poor setup and the players don’t like them then it’s very much forgotten about versus if the game is branded like Avengers and plays poorly the slots player will then devalue the brand as they didn’t like the game.

The most popular games include Ted, The Simpsons, Avengers, Superman, Batman, Scarface, Jumanji, and Jimi Hendrix Online Slot. These games may be developed by various different software providers so will all play very differently and have various bonuses or features unique to that game.

Video Slots

Video slots are the most popular of the online slots section with those games always being the most played around casinos and slots sites. When visiting your favourite casino or slots site you will find the games selection is mostly video slots.

These games also come with a wide range of features like pay lines, bonus rounds for slots, side games, fantastic graphics, and even mini-games built within the game itself. The software developers took the traditional slot game and upgraded it with modern technology making it a much more exciting experience for players.

In terms of RTP and variation, games can differ, which often draws players towards a particular game versus choosing others depending on the risk and reward style they like to play.

The most popular video slots games include Gonzo’s Quest, Starburst, Dead or Alive, and Twin Spin.

Jackpot Slots

The jackpot slots give players the opportunity to win the biggest prizes which can range into the millions. This is where, from just a quick spin of the wheel, you can win life-changing amounts of money as we have seen in the past. As a consequence, they are also up there as the most popular type of online slot game.

There are two different types of jackpot slot games which are progressive jackpot games and also standard jackpot games, we explain these more below.

Standard Jackpot

Your standard jackpot game is one that is usually hosted by either the casino or the software provider. They set up a jackpot for that game, which will be triggered when the winning symbols or bonus is hit by the player. When the jackpot is won, it is then reset and added back into the game until another player wins the grand prize.

Progressive Jackpot

The progressive jackpot slot works differently from the standard jackpot as the prize money keeps rising as more players keep playing the game. When a player takes a spin on the progressive jackpot game a small amount of the sum wagered with be contributed to the total jackpot figure. The amount taken from the stake towards the main jackpot prize will vary from game to game but it works very much like the lottery as the more players play it will keep rising on a daily basis.

The progressive jackpot games offer the largest amounts to be won which is due to the software provider being in control of the jackpot itself from the player’s stakes they have wagered and the casino itself not having to put the jackpot money up for grabs. This also allows the jackpot to be spread across multiple slots sites or casinos by the same game as it’s connected across all platforms, this is how the jackpots get to such a high amount with 1000’s of potential players playing across multiple sites.

The biggest jackpot win was on the Mega Moolah slot game was £13.2 million won by soldier Jon Heywood back in 2015 with many more huge winners on this game. You can check out all the many winners on Mega Moolah over on their website with the dates and amounts won here Mega Moolah Winners.

The most popular jackpot games include the mentioned above Mega Moolah, Major Millions Mega Fortune, and Arabian Nights.

Classic Slots

The classic slots games are what some people might remember from years ago with a much more simple design. The games don’t offer the same amount of features as the more modern slot games as the classic games come with fewer pay lines, often no bonus rounds available, and fewer winning combinations up for grabs.

The classic slots might not quit everyone but they do bring a very simplified way of playing without as many flashy components involved and easier to follow functions. More often than not the classic slots game can offer a higher RTP compared with the modern games, this may be due to the simplicity of the game.

The most popular games include Super Nudge 6000, Break Da Bank, Double Whammy, and Couch Potato.

Online Slots Sites Software

With the mention of the different slots site software providers in this article it’s best we explain a bit more about them. When you visit an online casino or slots site you will find almost all games are from a 3rd party casino software provider who creates the various games players all love to play.

As you can imagine using a 3rd part software company makes things much easier for the casino or slots site itself as they don’t have to try to develop the games themselves or have any of the maintenance required to keep the games running the way they should. Developing games can be a very costly endeavor with very few casinos making their own slot games 

This has become a very competitive marketplace between developers as everyone is looking for the next big hit but with competition comes great advancement in the industry with games constantly being made better year after year.

There are some software providers which you will see quite a lot when visiting your favourite casino or slots site which we will go into more detail below.


Netent is a software provider that started in Sweden back in 1996. They have been a leading developer in the slot games industry for many years now with some huge hit titles that are in the top 5 most played games across all online casinos.

The two big games from Netent are Starburst and Gonzos quest which made our list of the top slots sites games to play. These games lead the way for Netent but they do offer some other fantastic games for players to try out with big win opportunities.


Microgaming is possibly the largest software provider on the market with a huge catalogue of games and can be found at nearly online casino or slots site on the internet. They offer a great range of different games from the more branded slots to classic slots.

Microgaming offers some great slots including the hugely popular Mega Moolah with it’s gigantic jackpot wins over the years. The branded games have been a big hit for Microgaming with contracts with the popular TV shows and movies such as  Jurassic Park, Game of Thrones and Hitman. Some of the original games they have made over the years have also become a brand of their own among the gaming community including Immortal Romance, Thunderstruck and Avalon.


Playtech was founded in Estonia has been around since 1999 and another of the bigger companies involved in this industry with around 5000 staff working for this software developer. 

Playtech is certainly one of the best software providers on the market and also looks after the Virtue Fusion software which many of the popular bingo sites use to power their sites. Playtech is very involved in the branded side of the slots business with titles that include, The Dark Knight, Justice League, and the classic Frankie Dettori’s Magic Seven.

Yggdrasil Gaming

Yggdrasil is very much one of the newer developers on the scene having only been around since 2013 but this provider has done extremely well since joining the scene with lots of great titles under their belt.

They might not get as much attention as the bigger software companies as they don’t have the same variety or branded titles but the offering from Yggdrasil is very good and unique to other companies. Slots such as Vikings Go Berserk, Vikings Go Wild, and Blood Moon Wilds are the most popular games from this brand.

Play’N Go

Play’N Go is another Swedish brand in the industry which started the business back in 2007. They have built up a great collection of games with many being hits across online casino sites usually offering great RTP.

The most popular games that have come from Play’N Go would be Book of Dead as mentioned in our best slots list and also Moon Princess, Reactoonz amongst others. These games often have a great opportunity for some big wins plus the very nicely done graphics keep the players coming back.


Novomatic has been around the longest out of all the software providers with this company dating all the way back to 1980. This casino software developer doesn’t only operate online they have a huge list of land-based casino clients who run the Novomatic games so next time you are in your local casino or out in Vegas keep an eye out for the Novomatic slot machines!

The most popular of all the Novomatic games is Book of Ra which is very similar to Book of Dead from Play’N Go with the same bonus feature but they do have others worth checking out such as  Lord of the Ocean, Dolphin’s Perl and Sizzling Hot.

Slots Payment Methods

Online slot sites have changed a lot over the years giving us many more options to deposit and withdraw money which is great with options like e-wallets which have become really popular. These are often much faster in withdrawing money than to bank accounts or debit cards.

You will find nearly all online casinos or slot sites now offer lots of different forms of payment including debit cards such as Visa or Mastercard plus online options like PayPal, Apple Pay, Skrill, or Neteller. Credit cards are no longer allowed to be used for gambling purposes as per the UK Gambling Commission so take note of that before trying a credit card to make a deposit

Most players will have their preferred payment method when playing slots online but not all casinos will accept all of the different methods we have mentioned so always good to check what is accepted for the players who prefer online methods. We have found PayPal is accepted at nearly all online casinos now but others such as Skrill or Neteller may not be.

Another thing to consider is if any fees are applicable when using particular payment methods as it may cost you money using these versus sticking to bank transfer or a debit card.

Debit cards are the most common method amongst players as nearly everyone will have one that comes with having a bank account. With Visa, Mastercard, and Maestro being what we see most often in the UK but this may differ if you are in other countries. Nearly every online slots site or casino will accept this as a payment method unless they are specifically set up for something like cryptocurrency. Deposits are always very quick with bank cards with money being credited instantly to the account but withdrawals can take between 1 to 5 working days to land back in your bank account.

When looking at Ewallets as mentioned above we have quite a few different options ranging from PayPal, Neteller, EntroPay, Skrill, Neteller, and more. These methods are credited instantly much like debit cards but also see a much faster withdrawal time with money landing back in your wallet within 24 hours in most cases. 

Bank transfer is not often used as a payment method anymore due to it being quite slow but in the case of very large deposits and withdrawals, it will be used with nearly all online casinos accepting this as a valid payment method.

We have also seen a rise in slot sites accepting such payment methods as Apple Pay, Google Pay, Prepaid cards, and also the popular Bitcoin. Bitcoin is not often used in your popular UKGC casino sites but there are casinos now dedicated to using cryptocurrency.

Online Slots Tournaments

Slots Tournaments have become an exciting new feature among many online casinos with lots of different prizes on offer for winners. Tournaments may vary between different casinos but most often players will accumulate points from wagering on a particular slot game with the highest number of tournament points at the end collecting the big prize. Prizes can be won for the top 100 players and will vary from free spins and bonuses to cash prizes. With the opportunity of many players winning something, you will find these can be quite popular as everyone battles it out to win the grand prize!

The Tournaments will come with a timescale in which the points must be accumulated and can come with a buy-in to enter the competition. So this can require quite a bit of luck to win after you have bought in as you need to try to win as much cash as possible to accumulate points and move up the leaderboard.

Some casino sites may offer free entries to certain tournaments so you can join in the fun without having to put down any buy-in cash!

Prizes vary between casino sites and tournaments but a cash prize for the top places is the most common with free spins or bonuses given to the other players with some of these won during the tournament itself. This can be great fun for the big slots fans and some great rewards there to be won but as with most things casino related luck and a good strategy are required!

Slot Frequently Asked Questions

We hope all the above information has answered most of the questions you might have on online slot sites and all the games involved. We have listed some of the most common questions asked below

What Is The Best Online Slots Site?

With the industry now having so many great online casinos and slot sites, players will be pushed to go wrong with any of the sites mentioned above. Depending on what you are looking for from the site this can vary quite a bit as you may prefer bonuses and promotions or want the biggest slot selection possible. We recommending visiting any of the slots sites mentioned and having a dig around to make sure it has everything you need before playing.

What Are The Best Progressive Jackpot Slots?

The biggest progressive jackpot slot games are Mega Moolah and Jackpot Giant which have both had wins over £10million in the past with average wins on these slots being around £4million.

Which Slots Site Offers The Best Payouts?

No particular slots site will pay more than the other this all comes down to the slot game itself which is run by the software operator. We recommend looking for the highest RTP slots

Can I Play Slots For Free?

Unfortunately, this isn’t possible at any UK registered casino or slots site but for anyone based outside the UK this may be possible or you can visit the software provider directly for a possible demo.

Can I Play Slots On Mobile?

Yes, nearly all casino sites have the function for mobile gaming and sometimes offer a mobile app if you prefer to play there. Sometimes not all games are available for mobile users but this varies from casino to casino.

Can I Win Money Playing Slots?

Yes, you can win real cash when playing online slots but you can also lose money while playing slots so we recommend only gambling what you can afford to lose to avoid any disappointment or issues.

How Do I Win At Online Slots?

This comes down to luck when playing slots online as there is no sure way to win when playing. We would recommend playing a higher RTP range of slots to increase your chance of winning versus progressive jackpots which come with lower RTP.