Play Mobile Slots at UK Online Casinos 2025
Enjoy the most popular mobile slots at top-rated UK mobile gambling sites and casino apps, with no download required. Our expert guide shows you how to find top mobile slot games that you can play for real money on your iPhone or Android.
Best UK Mobile Slots Casinos for June 2025
Top 5 Most Popular Mobile Slots Games
There are thousands of mobile slots to choose from these days, so to help you find the best from the rest, we have the most played mobile slots across 160+ UK online casinos. Here are some of our favourite mobile slots that British players are giving a spin at the moment:
| Rank | Mobile Slot | Max. Win | Play at |
|---|---|---|---|
| 🥇 | Big Bass Bonanza | 2,100x | Jackpot City Casino |
| 🥈 | Eye of Horus | 500x | Betano |
| 🥉 | King Kong Cash Even Bigger Bananas 2 | 10,000x | Duelz |
| #4 | 9 Pots of Gold | 2,000x | Grosvenor Casino |
| #5 | Fluffy Favourites | 5,000x | HeySpin |
Big Bass Bonanza – Pragmatic Play
Eye of Horus – Blueprint Gaming
King Kong Cash Even Bigger Bananas 2 – Blueprint Gaming
9 Pots of Gold – Apricot (formerly Microgaming)
Fluffy Favourites – Eyecon
Pro tip from Jon Young, Slots Expert: “The chance to unlock up to five win modifiers on King Kong Cash Even Bigger Bananas 2 ensures excitement on every spin. They include Cash Match, which automatically doubles your payout, and Lock & Spin, which awards an instant respin with high-value symbols locked in place. Having all five in play can you help land the mobile slot’s eye-catching top prize of 10,000x your bet.”
Discover the Fun World of UK Mobile Slots
Mobile slots are fast becoming the main way UK gamblers enjoy online slots for real money. The Gambling Commission (UKGC) revealed in February 2025 that two-thirds of gamblers who played slots in the previous four weeks did so at mobile casinos.
This is because these days, many software providers produce games with a smartphone-first approach, meaning you can now find thousands of fun mobile slots at our top-rated real money casinos. While most slots are primarily designed for iPhone or Android, you can still hit the reels on other popular smartphone options in the UK, including Google Phone, Motorola, Xiaomi and Huawei.
Whether you decide you play mobile slots using your phone’s internet browser or by downloading casino apps, HTML5 technology ensures they seamlessly adapt to your device and screen size, while offering quick loading times and high-quality graphics.
Play the Best Mobile Slots at LeoVegas
LeoVegas is one of our highest-rated mobile slots casinos for UK players, as it has over 1,000 real money slots you can play on your smartphone, including the LeoJackpot progressive collection. New players can get 50 free spins on popular slot Big Bass Splash when you sign up and deposit £10, and the LeoVegas casino app has earned a rating of 4.7 stars from over 2,300 reviews on the Apple App Store.
Reviews Expert – Alan Kendall: “One of LeoVegas’ biggest strengths is the wide range of slots including dozens of progressive jackpots and exclusive titles, while the great mobile platform offers the same experience as on desktop without compromise.”
Player Review – Ashley Jomes (Trustpilot): “LeoVegas is one of my favourite sites to play at. The selection of different slots is amazing and withdrawals are processed quickly, so there’s nothing more I could ask for.”
Sign up at LeoVegasTop 5 Mobile Slots with Highest RTP
If you’re looking for the best expected returns when playing slots on your mobile, we’re here to help with the top five slots featuring the highest return to player (RTP) rates available at our recommended UK mobile casinos:
| Rank | Mobile Slot | RTP | Play at |
|---|---|---|---|
| 🥇 | Book of 99 | 99.00% | LeoVegas |
| 🥈 | Mega Joker | 99.00% | Luna Casino |
| 🥉 | Treasure of Tengshe | 98.94% | Coral |
| #4 | Jackpot 6000 | 98.90% | All British Casino |
| #5 | Pixies of the Forest II | 98.83% | 888 Casino |
Book of 99 – Relax Gaming
Mega Joker – NetEnt
Treasure of Tengshe – Blue Guru Games
Jackpot 6000 – NetEnt
Pixies of the Forest II – IGT
Pro tip from Jon Young, Slots Expert: “When you play Pixies of the Forest II, you can win one of three fixed jackpots paying out up to 1,000x your bet by triggering the Jackpot Pick bonus round. This works by getting you to choose between 12 pixies until you have four of the same colour, which determines whether you land the Gold, Silver or Bronze jackpot.”
Tips for Playing the Best Mobile Slots
With no shortage of mobile slot games on offer at top UK online casinos, there are tips you can follow to help find the titles you’ll most enjoy playing:
Decide how you want to play: Mobile slots are available on smartphone casino sites and dedicated apps. We generally recommend downloading casino apps for a more personalised experience, but if you’d prefer to save on storage space, try out mobile slots on a few different smartphone browsers (such as Safari, Chrome and Opera) to see which offers the smoothest gameplay on your mobile. This is also a good way to check your device’s compatibility with mobile slots.
Try free mobile slots: You can also try free slots on your smartphone, ensuring you can check whether you like a slot game without needing to risk your cash on your iPhone or Android. This can also be a good way to see if you’re happy with how your favourite desktop slot games run on mobile.
Look out for what you like: Mobile slots cover the same themes and types as desktop games, so there’s no reason to stray from any style of slot that you’re already a fan of. If you’re stuck for fun mobile slots to play, we suggest giving any games you’ve previously enjoyed on PC a spin on your smartphone.
Check out mobile casino reviews: The best mobile casinos are often home to top mobile slots. You can read our expert casino reviews to find out more about the games available at our highest-rated mobile gambling sites, and look through the ratings on your device’s app store for feedback from other players on casino apps.
Check your battery and connection: To ensure you’re not interrupted mid-spin, avoid playing mobile slots on low battery and use wi-fi instead of 4G or 5G when possible. You should also ensure that your smartphone’s screen brightness is at an appropriate level to avoid headaches.
Gamble responsibly: Playing mobile slots wherever and whenever you like is a benefit, but don’t let this encourage you to gamble more money than you can afford. Stick to responsible gambling by following a budget, using tools such as deposit and time limits, and deleting casino apps from your mobile if you feel you need a break.
Mobile Casino Slots vs. Desktop Slots Games
If you’re new to smartphone casinos, you may be wondering how mobile slots compare to hitting the reels on the same games on desktop. Here are the key differences between playing slots games on your mobile and your computer or laptop:
| Mobile Slots | Desktop Slots |
|---|---|
| ✅ Allows you to play your favourite slot games whenever and wherever you like, and without needing wi-fi if you’re happy to use mobile data | ✅ A casino’s entire slots collection is normally available on desktop, whereas games may be incompatible on mobile |
| ✅ Some casinos (such as LeoVegas) have exclusive bonuses for smartphone slots players | ✅ Allows you to play with a larger screen, which may make it easier to follow the gameplay and check the in-game info |
| ✅ Certain mobile slots can be played in portrait or landscape by adjusting to your screen size | ✅ Desktop slots generally offer quicker loading times than on mobile |
| ❌ Not all slots at an online casino may be mobile-compatible | ❌ Requires access to a laptop or PC, plus a fixed internet connection or wi-fi |
| ❌ If you prefer using casino apps over mobile sites, these require storage space on your smartphone | ❌ May not be able to play desktop slots using mobile payment methods such as Apple Pay and Google Pay |
Claim Bonuses at Mobile Slots Casinos
There’s a variety of casino bonuses you can use on mobile slots at UK casinos, including occasional exclusive offers for smartphone players. As with desktop slots, the most common promotion you’ll find for mobile slots are free spins, which may involve no deposit free spins or no wagering free spins.
You can even take advantage of the latest promotions for mobile slots as soon as you join our recommended casinos, by claiming our top-rated welcome bonuses for June 2025:
Our #1 Ranked Casino 
