The 10 best online slots to play in 2025
Making sure you find the best online slots is something we’re passionate about.
From April and May 2025, the UK government will implement new slot stake limits for online slots to encourage safer gambling. Players aged 25 and over will be restricted to £5 per spin, while those aged 18-24 will face a £2 limit per spin.
In this guide, you’ll find some of the most popular and rewarding slots in the UK at some of the best online casinos in the country. So without further ado, let’s dig in.
- Money Cart 2 by Relax Gaming
| RTP | 98% | Min bet | 10p |
| Volatility | High | Max bet | £200 |
Relax Gaming takes the bonus round from Money Train 2 to bring about a full game with Money Cart 2! The result is a fiercely focused game that puts players right in the action from the very first spin. Land at least 3 bonus symbols to trigger the respin feature, which adds all manner of special symbols – and win potential – into the mix.
2. Rainbow Riches by Barcrest
| RTP | 95% | Min bet | 1p |
| Volatility | Medium | Max bet | £5 |
Is it the luck of the Irish? Say hello to Rainbow Riches, a popular slot game by Barcrest with 5 reels and 20 paylines. As well as being a land-based slot machine, players can enjoy this retro-feel game at a variety of online casinos.
3. Big Bass Splash by Pragmatic Play
| RTP | 95.7% | Min bet | 10p |
| Volatility | High | Max bet | £250 |
You may have already heard of the Big Bass series from Pragmatic Play and if so, you are more than likely familiar with one of the most popular titles, Big Bass Splash. With 5 reels and 10 paylines, you can enjoy a fishing adventure with a maximum win of x5000.
4. Fishin Frenzy The Big Catch Megaways by Blueprint Gaming
| RTP | 95% | Min bet | 10p |
| Volatility | Medium | Max bet | £100 |
If you love fishing-themed slot games, Fishin Frenzy The Big Catch Megaways by Blueprint Gaming is a cracking choice. This version is much more meatier than the original Fishin Frenzy slot, giving players up to 15,625 ways to win across 6 reels.
5. Sweet Bonanza by Pragmatic Play
| RTP | 96.5% | Min bet | 20p |
| Volatility | High | Max bet | £100 |
Littered with candy and fruit, Sweet Bonanza by Pragmatic Play has a maximum win of x21,175 your bet which is pretty juicy. This slot game has a range of different features such as free spins, a tumble feature and a bonus game buy-in.
6. Big Bass Bonanza Megaways by Reel Kingdom
| RTP | 96.7% | Min bet | 20p |
| Volatility | High | Max bet | £100 |
Reel in the fun with Big Bass Bonanza Megaways by Reel Kingdom. Part of the Big Bass series powered by Pragmatic Play, this megaways slot game has 46,656 ways to win. Players can expect some thrilling features too, including wilds, tumbling reels, free spins and much more.
7. Starburst by NetEnt
| RTP | 96.1% | Min bet | 1p |
| Volatility | Low | Max bet | £100 |
Starburst by NetEnt burst onto the scene over a decade ago in 2012 and has continued to be a popular choice, even after all those years. The slot has 5 reels and 10 paylines with payout both ways. Players can also enjoy trigger features such as wilds and respins.
8. Book of Dead by Play’n GO
| RTP | 96.2% | Min bet | 1p |
| Volatility | High | Max bet | £100 |
If you’re a fan of slot games, we’re sure you’re aware of the classic Book of Dead by Play’n GO. Part of the Rich Wilde series, this classic slot consists of 5 reels, 3 rows and 10 paylines for you to bet on.
9. Gates of Olympus by Pragmatic Play
| RTP | 96.5% | Min bet | 20p |
| Volatility | High | Max bet | £100 |
The action has been taken to the clouds above with Gates of Olympus. This Greek god-themed slot game features 6 reels, 20 paylines and a maximum win potential of x5000 your bet.
10. Mega Joker by NetEnt – 99% RTP
| RTP | 99% | Min bet | £1 |
| Volatility | High | Max bet | £10 |
Released many moons ago in 2011 by NetEnt, Mega Joker continues to be a fan favourite. It’s a classic slot with a retro feel and one of the highest RTP percentages at 99%. Players can enjoy 3 rows, 5 fixed paylines and a maximum win of x2000 your wager.
How we rate the best slot games
There’s more to our rating process than slapping a percentage on the side and going on our merry way. With years of experience reviewing various online casino games, we have a rigorous process that delves into the ins and outs of each game. This includes assessing the gameplay, bonus features, RTP and much more.
How to choose the best online slots in the UK
Online slot games are arguably one of the most popular casino games in the UK and with a combination of entertainment and prizes, it’s a no-brainer. That being said, how do you know which are the best online slots? Well, that’s where we can help. We specialise in reviewing not only casino sites, but the games too.
✓ Before diving into a slot, check our slot reviews
Before diving straight in, spend some time reading up on slot reviews. After all, these reviews give you insight into a game without spending a penny. Writing reviews is our expertise, and you’ll find tons of slot reviews on our website, including popular games like Rainbow Riches and Big Bass Bonanza.
✓ Look for feature-loaded slot games
When researching slot games, you should pay close attention to the ones oozing with exciting features such as cascading reels and multipliers.
✓ Look for slots that offer a variety of bonus features
Some slots offer an extra layer of excitement with bonus features to further your winning potential. Keep your eyes peeled for slot games with progressive jackpots, free spins, wild symbols and mini-games.
✓ Check the volatility and choose a slot that matches your risk appetite
Now that you’ve looked at what features and bonuses the slot game offers, the next question to ask yourself is: does the volatility match my risk appetite? If you enjoy the rush of chasing a rare but big jackpot, look for a slot with high volatility. However, if your preference is a more frequent, but smaller win, low volatility slots are the ones for you.
✓ Pay attention to the RTP value
The RTP percentage in short means the payback percentage returned to the player. For example, if you wager £100 on a slot game with a 96% RTP, you would expect £96 back. However, keep in mind that the RTP is an average number calculated over millions of spins, so it’s important to remember that you won’t win this back on every session.
✓ Understand the paylines on offer
Although you can’t see them, paylines determine a win depending on matching symbol combinations. Variable paylines give players more flexibility, allowing them to choose the payline they want to bet on. Fixed paylines are the opposite, meaning players must bet across all available paylines.
✓ Consider the maximum win
By definition, the maximum win is the maximum amount a slot can pay to a winner. As an example, if a slot game’s maximum win was x1000, a player could win x1000 the bet. It’s as simple as it sounds!
✓ Always opt for online slots from licensed and regulated casinos
When looking for online slots, remember that you should only ever play them at licensed and regulated casinos. This ensures that your gaming is safe, secure, and fair. For peace of mind, check out our library of online casino reviews; we only ever list casino sites that are UKGC-regulated.
| DID YOU KNOW? |
| Following UKGC regulations, the average RTP must be displayed on a game. |
Legality and safety of online slots in the UK
Like anything in the online casino world, the only way to know if it is legal and safe in the UK is if it has been licensed and regulated by the UK Gambling Commission.
Is it legal to play slots online in the UK?
Playing online slot games in the UK is completely legal, so long as the casino you’re playing with is licensed and regulated by the UK Gambling Commission (UKGC). If you’re unsure if a casino is legit, give one from our library a spin as we only ever recommend an online casino with a UKGC licence.
Are online slots safe to play?
Of course, there is always a level of uncertainty when playing anything online. However, as a rule of thumb, as long as the slots you’re playing are at a UKGC-regulated casino, they are safe to play.
How do slot games work?
Each online slot game you play uses a random number generator (RNG) alongside innovative technology to bring you each spin result. The best part is that every result is completely fair thanks to the RNG.
| DID YOU KNOW? |
| According to UKGC reports, online casino games dominate the sector, generating £4.0 billion in GGY, £3.2 billion of which was from slot games. |
Types of online slots
It can feel overwhelming being faced with the different variations of online slots – we get it. But, once you have an understanding of the different games available, you’ll soon realise which you prefer. So, with that in mind, let’s look at the various types of popular online slot games available in the UK.
Classic slots
These online slots are inspired by the traditional slot machines we know and love, featuring the classic fruit, 7s, bars, and stars symbols. These slots focus more on the classic fruit machine experience, not complex features and bonuses.
Megaways slots
Originally developed by Big Time Gaming, Megaways slots and their mechanics have made quite an impact on the industry. With more reels and symbols, Megaways slots give players even more ways to win.
Progressive jackpot slots
Progressive jackpot slots take a small percentage of everyone’s bets and add them to a communal pot. That allows the prize pool to grow fast, especially since these slots are normally available across multiple casinos. Once someone hits the right combination, they scoop the pot.
Bonus buy slots
Bonus buy slots are exactly what they say on the tin. Players can skip the base game and buy into where the most excitement happens – the bonus round. Disclaimer, you cannot play bonus buy slots in the UK right now.
Hold and Win slots
Hold and Win slots are like your classic slot game however, they have a bonus minigame that gives you the chance to respin for bonus symbols, additional features, jackpots and more.
| DID YOU KNOW? |
| Games developer, Microgaming,(now Apricot), actually created one of the first-ever jackpot slot games. |
How to win at online slots
In short, there is no single formula for winning at slot games. However, there are certain steps you can take to boost your chances.
1. Choose your online slot carefully
Winning on an online slot game is down to chance and as a player, you shouldn’t expect to win on every single spin. However, choosing a slot that is on par with your preferences does help. Consider the game’s RTP percentage and if the volatility lines up with your gaming style.
2. Make sure to learn the lingo
We’re sure you’ve noticed a lot of casino terms being used, so it’s good practice to get your head around them. You don’t need to be an expert by any means, but it does help you to understand a game and its mechanics.
3. Keep an eye out for bonuses
You’ll find many online casino bonuses offer bonus spins or extra funds to give players that little bit extra to play with, meaning more chances to win.
4. Make use of free spins
Free spins give players more chances to win and the opportunity to try what works and what doesn’t. You may find free spins in a slot game as a triggered bonus or an online casino offer.
5. Aim for smaller jackpots
Aim for a smaller jackpot that pays out more often if you’re a player who prefers a frequent win. Of course, you won’t win huge in one go, but winning more often could maximise your profits over the long term.
6. Practice for free
As the saying goes, practice makes perfect. Look for free casino games to practise your techniques without spending a single penny.
7. Watch streamers play
It’s no secret that streamers are on the rise and it’s no different when it comes to online gaming. Look at streamers playing online slots, you may pick up some handy tips. Our CasinoHawks YouTube channel is also full of useful casino video guides.
8. Set a budget and play responsibly
As always, online gambling is for fun and should only be played responsibly. Remember that luck plays a huge part in winning big, so manage your bankroll, and set a budget that ensures you enjoy your favourite slot games without getting out of hand.
| DID YOU KNOW? |
| As part of UKGC legislation, online casinos must have responsible gambling tools. This may include deposit, loss and session limits. |
What are the advantages of playing slots online?
Online slots have transformed the way people gamble across the globe, with more convenience than ever before. There’s a reason that online slots are one of the most searched-for games in the UK, so let’s look at why.
- Convenience: there is no need to visit a brick-and-mortar casino to play your favourite slots. Online and mobile casinos allow players can spin the reel anywhere, anytime
- Game options: there are thousands of variations of slots available
- Bonuses and promotions: with so many bonuses and promotions available, players can get more for their money
- Higher payouts: with most slot games having 94% and up RTP, players can expect a higher payout than land based casino slot machines which are typically lower
Real money online slots vs. free online slots
Deciding between real money and free online slots ultimately comes down to the individual player and their overall goals. Real money online slots are aimed at players who want the thrill of chasing a jackpot. However, if you’re a player who enjoys online slot gaming without the risk, you should consider a free online slot game. That being said, let’s delve into the pros and cons of both.
| Real money online slots | Free online slots |
| ✅ The potential to win real money | ✅ No money commitment |
| ✅ Lots of games to choose from | ✅ Ability to practise strategies |
| ✅ Chance to play progressive pots | ✅ Free gaming |
| ❌ More risk of losing real money | ❌ Not many games to choose from |
| ❌ Payouts may not be instant | ❌ No potential to win real money |
| DID YOU KNOW? |
| Plenty of UK casino sites offer players the chance to try slots completely free. This means you can try out slots before you decide whether you want to invest in them or not. |
Top software providers for online slot games
There’s no denying it, software providers are the backbone of the industry. Without casino game providers like NetEnt, Pragmatic Play and Blueprint Gaming, we wouldn’t have the slot games we all know and love. So with that in mind, here’s the scoop on the top game providers with the best online slots.
| Slot provider | Popular slots by provider |
| Pragmatic Play | ✔️ The Dog House Megaways ✔️ Bigger Bass Bonanza ✔️ Great Rhino Megaways |
| NetEnt | ✔️ Gonzo’s Quest ✔️ Guns N’ Roses ✔️ Dead or Alive |
| Blueprint Gaming | ✔️ Fishin Frenzy Megaways ✔️ Irish Riches Megaways ✔️ The Goonies |
| Play’n GO | ✔️ Reactoonz ✔️ Moon Princess ✔️ Fire Joker |
| Microgaming (Apricot) | ✔️ Immortal Romance ✔️ Jurassic Park ✔️ Mega Moolah |
Best UK slot sites
Now that you know about the different types of slots available, we bet you’re wondering where to play them. To save you some time, we’ve rounded up a few of the top casino sites that offer the best online slots and offers for you to check out – we won’t keep you waiting!
- LeoVegas – Roar into action
LeoVegas is hot off the mark when updating its games library, with new slot games being added weekly. You’ll find popular slot games from big providers and free spin promotions too.
- BetUK – A world of spins
With a huge library of popular online slots and free spin promotions, BetUK is a cracking choice for players wanting to indulge in the best slots in the UK.
- Q88bets – Reel in the fun
Q88bets keep the new ones coming. There’s a huge selection of slots, from popular games to those classics that keep us coming back.
Best mobile slot sites
More and more online casinos are adapting their platforms to give their players an on-the-go gaming experience. So if you’re looking for the best online mobile casinos or casino apps to play your favourite slots, we have you covered.
- Casumo – Casumo in your hand
Not only is Casumo optimised for web browsers, but there’s also a handy app that can be downloaded on iOS and Android devices. This casino site also has a huge selection of slot games, making it a cracking choice for slot enthusiasts.
- BetMGM – Play anywhere, anytime
BetMGM has an app and mobile browser that allows players to play their favourite games, wherever.
- Betfred – Pocket-sized gaming
As well as a handy app and a mobile-optimised website, Betfred also has some great promotions for slot fans. For example, new players can enjoy up to 200 free spins on selected slots.
Online Slot Tournaments to play in the UK in January 2025
The thought of winning is thrilling, but what if you added a competitive twist? Slot tournaments go way above the standard rewards, giving you the chance to win some pretty sweet prizes. Here’s what’s going on this month.
| Tournament | Prize pool | Where to play |
| Drop and Wins | £2,000,000 | 7Bet |
| Super Drops | £40,000 (weekly) | Grosvenor Casino |
| The Village Fete | £10,000 (monthly) | Jackpot Village |
Reel in the rewards
Although online slot games are a game of luck, it pays to do your research. From learning about the different slot types to brushing up on your game lingo, these small things can make your gaming experience less overwhelming. If you’re unsure where to start, why not check out some of the best online slots listed above at one of our recommended casinos? We’ve already done the digging to bring you the RTP, volatility and even a full gameplay review.
All slots
| Name | Total rating | RTP | Maximum profit (x Your stake) | Number of rows | Paylines |
|---|---|---|---|---|---|
| 15 Crystal Roses: A Tale of Love | 90 | 96.2% | x10000 | 5 | 20 |
| 15 Tridents | 70 | 96.12% | x10000 | 4 | 2048 |
| 5 Lions Dance | 67 | 96.5% | x2700 | 4 | 1024 |
| 5 Lions Megaways 2 Slot Review | 86 | 96.5% | x8000 | 2 | 262144 |
| 6 in the Chamber | 51 | 96% | x100000 | 3 | 10 |
| 60 Second Heist | 92 | 96% | x60000 | 4 | 1024 |
| 7 Sins | 86 | 96.3% | x1580 | 3 | 15 |
| 9 Masks of Fire | 67 | 96.24% | x2000 | 3 | 20 |
| 9 Pots of Gold | 92 | 96.24% | - | 3 | 20 |
| 90K Yeti Gigablox | 91 | 95.5% | x90000 | 6 | 46656 |
| 9k Yeti | 87 | 97% | x9012 | 4 | 4096 |
| A Dark Matter | 67 | 96.18% | x2400 | 3 | 5 |
| A Tale of Elves | 65 | 95.07% | - | 3 | 243 |
| AbraCatDabra | 90 | 96.29% | x5000 | 3 | 20 |
| Age Of The Gods | 90 | 95.02% | x2000 | 3 | 20 |
Frequently asked questions
