Best Online Slots UK
There are hundreds of slots ranging from classic fruit machine games to the latest video slots available in online casinos for you to choose from. Below are the top 10 must-play slots online for May 2024 ranked by our team of online slots experts. Remember you can play all these top slot games for free on our website, without risking your money. If you run out of credits, just refresh the page to receive new ones.
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Which Are the Best Payout Online Slots?
The payout percentage is the average amount of money the slot will pay back to the players. We have tested hundreds of best online slots to figure out the very best according to their payout. According to our game reviewers, here is a list of the best 10 payout slots.
Top Payout Slots | Provider | Payout Percentage (RTP) | Volatility |
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Book of 99 | Relax Gaming | 99% | Medium |
Ohh Ahh Dracula | Barcrest | 99% | High |
Jackpot 6000 | Netent | 98.75% | High |
1429 Uncharted Seas | Thunderkick | 98.6% | Medium |
Tropic Reels | Playtech | 98.5% | High |
Joker Strike | Quickspin | 98.11% | High |
Moon Shadow | Barcrest | 98.1% | High |
Blood Suckers | Netent | 98% | Medium |
Starmania | NextGen | 97.87% | Medium |
Golden Tour | Playtech | 97.71% | High |
Pile 'Em Up Frosty Sweets | Snowborn | 96.22% | High |
The Most Popular Slots in the UK for May 2024
There are plenty of real money slot options for UK players to play at the casinos licensed by the Gambling Commission. With some of the top casinos in the online casino sphere operating in the UK, they can be guaranteed a safe, secure, and fun experience and some of the top slots with the best gameplay. With bonuses available in many UK online casinos and stringent regulations from the UKGC, you're guaranteed to have a good time.
Best UK Slots | Provider | RTP | Volatility |
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40 Super Hot | EGT | 95.81% | Low |
Big Bass Bonanza | Pragmatic Play | 96.71% | Medium |
Fruit Party | Pragmatic Play | 96.50% | High |
Lucky Leprechaun | iSoftBet | 95.76% | Medium |
White Rabbit | Big Time Gaming | 97.72% | High |
40 Super Hot (Euro Gaming Technology)
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Reels: 5
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Paylines: 40
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Bet Range: £0.40 - £ 100.00
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RTP: 95.81%
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Volatility: Low
Developers at EGT know very well that there is still value in classic online slots with more simplistic gameplay. 40 Super Hot is a fun online slot that comes with 5 reels and 40 fixed pay lines. Prepare to enjoy smooth gameplay where winning combinations are set alight on your reels. The slot offers various bonus features, including big win symbols, a jackpot game, and a gamble feature.
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Fruit Party (Pragmatic Play)
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Reels: 7
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Paylines: Cluster Pays
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Bet Range: £0.10 - £ 100.00
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RTP: 96.5%
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Volatility: Medium
Fruit Party is a funky video slot that features a 7x7 grid screen with a total of 49 blocks. This relatively new game has been received extremely well in an online gaming industry that is hungry for new concepts. The game features a cluster pay system where 5 or more matching symbols, touching horizontally or vertically, form a winning combination. The game comes with some great bonus features including the random multiplier making the gameplay more thrilling.
Mr Vegas Casino
Mr Vegas Casino ReviewMr Vegas Casino
White Rabbit (Big Time Gaming)
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Reels: 5
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Paylines: 248,382
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Bet Range: £0.10 - £ 20.00
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RTP: 97.72%
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Volatility: Medium-to-High
Big Time Gaming has gone to extensive lengths to create a forward-thinking online slot machine, White Rabbit Megaways, based on the popular tale of Alice in Wonderland. Uk players can potentially win up to 17,420x their stake in this slot game, and it's stuffed with bonus features including: many Caterpillar Wilds, a good amount of Down the Rabbit Hole Free Spins, and a Feature Drop.
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New Slots
With new games being put out every week - which are some of the latest slots you can take for a spin? Here's a few to highlight below.
Different Types of Slots
Picking the type of slot you want to play can make all the difference - each player has a set of specific criteria for their gameplay, or a play style that they prefer.
Slots By Theme
Adventure-Themed Slots Diamonds-Themed Slots Egyptian-Themed Slots | Fantasy-Themed Slots Horror-Themed Slots Space-Themed Slots |
When it comes to designing a game, providers want it to be fun, appealing, and nice to look at. That comes down to the music, the visual design, and the gameplay symbols. The theme is what encompasses all of this - so whether you want to spin the reels on a marine pirate-themed slot, or uncover potential riches in an adventure-themed slot game, there are plenty of different theme options to pick from.
Slots By Reels
The number of reels on a slot can vary from your classic three-reel slot similar to fruit machines, or go as high as 5 or 6 reels to increase the paylines available during your game. Players who prefer a classic slot game would opt for smaller numbers or reels, but higher numbers of reels might lead to greater volatility and potential numbers of outcomes.
Slots By Payline
Payline numbers can vary in slot games - keep it simple with a few options or increase the number for more ways to win. Picking a slot by payline options means there are a few more options when it comes to hitting a winning spin. A few slots only have a few select ways to win, while others will let you have thousands of potential lineups for winning symbols, as well as options for wilds symbols and more.
Slots By Volatility
Low Volatility Slots
Medium Volatility Slots
High Volatility Slots
What is slot volatility? The volatility of a slot is how the symbols on the reels are to change with each spin. So a greater variety of slot symbols means a higher potential number of wins, whereas a lower volatility slot will potentially mean a more consistent number of lower-value wins.
Slots By Features
Wilds
Scatters
Free Spins
Multipliers
Bonus rounds
Each slot game comes into its own when you actually get down to playing. Each one will have its own great gameplay style, such as giving players scatter or wilds features which launch the symbols across the reels, or bonus rounds which give players free spins. Given these can totally transform slot gameplay, they're worth factoring in for your slot choice!
Best Slot Providers
Although the selection of slot games is ever increasing, the best online casino software provider sets one casino slot apart from another. Some experienced players target the software providers' games that they enjoy most, while others may prefer to try virtually all slots online in one place. Luckily, there are plenty to choose from.
The Best Free Slots at CasinoTopsOnline
With many online slots to choose from, we have ranked 10 of the best online slots according to their best features. Find the list below and click on the slot name to be redirected to the slot review page:
Best For... | Game | Provider |
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🎰 Best for the jackpot | Mega Moolah | Microgaming |
🎲 Best for payout | Rainbow Riches | Gamesys |
💎 Best for variance | Big Bass Bonanza | Pragmatic Play |
⚡ Best for features | Money Train 2 | Relax Gaming |
💳 Best for betways | Bonanza Megaways | Big Time Gaming |
🤵 Best for mini-game | Chicken Game | Pragmatic Play |
📋 Best for graphics | Book of Dead | Play 'n GO |
🏆 Best for music | Reactoonz 2 | Play 'n GO |
✔️ Best for high-rollers | 88 Fortunes | SciPlay |
🚀 Best for our team | Wolf Gold | Pragmatic Play |
Mega Moolah
Mega Moolah is a popular progressive jackpot slot based on a wild African safari by developed by Microgaming. This fun animal-themed slot features the beautiful wild beasts found on the plains of Africa. The game is set on 5 reels and offers a total of 25 paylines. This video slot is a medium volatility slot with many chances to be a winner.
Rainbow Riches
From the studios of Barcrest comes the famous Irish-themed slot, Rainbow Riches. Taking you to the luscious hills of Ireland, the lucky Leprechaun takes you on a quest to find the missing pot of gold. The game includes three fantastic bonus rounds, each of which offers the potential for great rewards and helps maximise your wins. The game does need some modernisation of the overall graphics but all in all, this online slot machine continues to prove to be one of the UK's favourite online slots.
Big Bass Bonanza
Pragmatic Play's major hit, Big Bass Bonanza, will give you a new gaming experience on a 5-reel layout, with lots of prizes to catch and a total of 10 paylines. With an RTP of 96.71% and a maximum jackpot of x2,100 of your original wager, this game surely stands out to be one of the best.
Money Train 2
Money Train 2 is a 40 payline slot game by Relax Gaming that features a steampunk meets Cowboys-style theme. The game offers two rich bonus features: the Respin Feature will have you hoping you don't win, while the Money Cart Bonus Round could turn 5 reels into 7 reels for massive payout potential.
Bonanza Megaways
Bonanza Megaways is a 117,649 ways slot that takes you on a fun mining adventure in search of valuable gems and gold. This game pays out when you get 2 or more matching symbols on consecutive reels, with explosive effects from the game's dynamite wilds. But the biggest money comes from the free spins feature, in which the free spins keep on coming and those win reactions come with increasing multipliers.
Mobile Slots
Playing games on your mobile makes for an easier experience all around. You can play on the go - so you're not stuck to just playing on your desktop computer - and there are often dedicated games or sites for your mobile. Most game providers have kept this in mind now, with games being made on HTML5 and which are mobile-ready from the beginning. This includes features like:
Designs meant for a smaller screen, so it's easier to read
Larger buttons for tapping on your mobile
Adaptable games for any screen size
Playing mobile slots is how many online gamers prefer to make a spin, so as a result the top UK mobile slot games remain popular for a reason.
Understanding RNG
The RNG is the "random number generator" - every spin has a randomly decided outcome when you hit the button to start the game. This keeps the outcome of the game fair as it isn't predetermined, and is entirely reliant on the outcome of this generator. The RNG is tested by third parties and officials to ensure it's fair.
Understanding RTP
The RTP is the potential amount a player could hope to get back if they played for a very long time. It's a general indication rather than a specific amount, but is good to gauge more or less what your likelihood is of getting wins back.
Each of our slot reviews states the max win available and the combination of wager amount and symbols which you’ll need to aim for to achieve this. Although it's obviously not guaranteed, it's great for an indicator.
So, for example, if a game has a higher RTP percentage of 96%, you could assume that if you play £10, you would get 96% of that - £9.60 - back over a very long time, theoretically.
How to Choose the Best Online Slots Site in the UK
Slot games for UK players have to be top-quality - whether you want a classic slot experience or to try a brand new video slot game, picking one that caters to UK players is best for making sure you get great value on your game, a third-party verified fair system, and more.
There’s a massive variety of best online casino slots regularly being launched in the industry. It’s important to us that we review these based on several key factors. We write reviews based on this - so here are a few key criteria to keep in mind when making up your own mind on which to pick.
Mechanics of the Game
We’ll tell you the min/max stakes you can wager, the number of bet levels, paylines and reels. We’ll also let you know the combinations to watch out for that will deliver those all-important wins. As well as our opinion on the in-game bonus features and how well the slot works on a range of mobile devices.
Theme and Soundtrack
We take into account both of these important slot game factors. An annoying and repetitive soundtrack can either make or break your session, so we’ll always let you know our honest thoughts on this. As well as the type of slot theme and the quality of the symbols and overall graphics.
Huge Jackpots
Having a bunch of slot machines lined up together will pool the collective losses into a communal jackpot, making one lucky player very happy once the pot hits! Best online gambling sites offer progressive jackpot slots, and often the jackpot is put together by players across many of the best casinos – making for huge winnings!
You can find different types of jackpots when playing the best online slot games to win: local jackpots, network jackpots, fixed jackpots, and progressive jackpots. The best one for winnings is the progressive jackpots, which could reach a massive amount of money.
Several Wilds Symbols
Wild symbols can switch up your game - a wild symbol can replace any other symbol in play; they can line up combinations you would not have otherwise! When lining up your symbols on the reels, wild symbols can let other symbols work together for set wins or trigger their special rounds, depending on the game's rules.
Fun Bonus Games
Bonus games bring a secret extra twist to the best casino slot games. Sometimes, you'll spin symbols that trigger an extra round or a new gameplay mode. For example, a bonus round might start with the correct symbols that multiply your win or give you a certain number of free spins to add to your total.
Free Spins Games
Free Spins allow players to give their slot game an extra level of fun without needing to spend any more money. Trigger free spins round, and you'll be treated to a certain number of spins on the game, sometimes in a particular bonus round that is added onto your current spin.
Anything you win in the free spins round gets added to your win total, no matter your initial stake.
Bonuses
Some slot-focused casinos will design offers based solely on online slots and give players a selection of slots. This section will delve into the best casino bonuses for online slot enthusiasts. Keep in mind these bonuses won't be available to be played with every casino game.
We recommend you read the terms and conditions of each promotion before playing:
No Deposit Free Spins;
Welcome Spins.
Best Slot Online FAQs
Should you play or not the best slots online? Well, we could debate this for ages without finding a proper answer. It's all about the player and very personal. Some people don't like playing mainstream slots games, while others love it. If you've got more questions about them, check out our FAQ below.
Free spins are a set number of spins that a player can make without needing to bet with their own money. They may receive 10 free spins as part of a bonus, for example, and they can use those free spins to play a certain game without needing to stake their own money.
When looking for the best odds of winning, you want to find the slot with the best RTP. This is the Return to player. Basically, it's a percentage value that shows how much you would get back for every bet statistically. You're not guaranteed to get that same amount all the time, but as a general rule a higher RTP is a higher chance of winning. There isn't a special trick to winning, but a higher RTP is a safer bet.
Some slots generally average around 96% RTP, but some can go as high at 97-98%!
Although all slots follow the same premise of spinning to match symbols, there are variations in online slots. Video slots are almost like a videogame, and have interesting effects and game play. Classic slots are more similar to what you'd find in your everyday casino. Jackpot slots take a percentage of each stake, from every site that they're found on, and put it together into a cumulative jackpot which any player has a chance to win.
Without any doubt, Mega Moolah, Mega Fortunes and Megabucks.
The best slot machines to play at the physical casinos are 88 Fortunes, Book of Ra deluxe, Bubble Craze, Lady Robin and Gold Fish. When it comes to online casinos, Gonzo's Quest, Book of Dead and Mega Moolah.
This is a myth. There's not the best time to play online slots or physical slots. However, playing while many other players are playing, is usually good as the slots keep being warm.
There is a bunch of casinos where to play Bier Haus slot online free! We suggest you to play it on 888, Unibet, William Hill and LeoVegas.
First of all, read the rules and make sure you understand the payment symbols and paylines. Second, keep a low bet (at least to start off), and check if the game is warm. Make sure the game has an RTP of above 96% and read the reviews of other players to know tricks and insights.
The best slot machines to play for fun are Book of Dead, Gonzo's Quest and Starburst.
References
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Math with the best slot machines (Forbes)
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The first slot machine ever (ThoughtCo)
Fact-checked by Julia Attard
Experienced Senior Author & Online Casino Expert
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