10 Best Slot Games to Play Online for Real Money
There are literally thousands of online slot games available at the top 50 online casinos, and new slots launch every single week.
Despite this variety and fast-changing market, a handful of the top slot games are timeless classics that British players come back to time and time again. These slots have different themes and bonus features and were developed by the top software providers operating in the UK.
You can find the best slots to play online from nearly every online casino in the market, which is another reason why these 10 online slot games are so popular in the UK. Let's take a look at our definitive ranking!
Check below the best slot games to play online for real money!
10. Dead or Alive
| RTP | Volatility | Max Win |
|---|---|---|
| 96.82% | High | 111,111x |
Giddy up, the outlaws are waiting for you! Dead or Alive is the best Western-themed slot game due to the excellent graphics and intriguing soundtrack. If you don't want to waste valuable coins, the minimum bet starts at £0.09.
Dead or Alive has a free spins round, sticky wilds, and plenty of multipliers, ensuring a fantastic gaming experience every time you unholster your pistol. Join Jesse James and Billy the Kid to explore the Wild West in this 3-row, 5-reel game.
Where to play: Mr Vegas with a 100% matched deposit bonus up to £200.
9. Mega Moolah
| RTP | Volatility | Max Win |
|---|---|---|
| 88.12% | Medium | 15,000x in base game + progressive jackpot |
The Guinness World record for the highest online slot payout of all time is held by a British man who won £13,209,300 on the Mega Moolah progressive jackpot on 6 October 2015. This game is certainly Microgaming's biggest success story, and it can be found in many British casinos.
The original Mega Moolah slot has an African Savannah theme, and this is one Big Game worth going on a safari for! The online slot game has five reels with 3 symbols on each, and 25 paylines in the base game. A cut of every spin goes into the progressive jackpot, and the kitty can grow to a nice six-figure sum!
Where to play: Zodiac Casino. Unfortunately, no bonuses are applicable for Mega Moolah.
8. Big Bass Splash
| RTP | Volatility | Max Win |
|---|---|---|
| 96.71% | Medium | 5,000x |
We like Big Bass and we can not lie! Big Bass Splash is a hugely successful fishing-themed slot game and a spin-off from the original Big Bass Bonanza. Its ten paylines allow you to cast your net widely to nab some free spins.
The action-packed free spin round begins when you land at least three scatters on the reels. If you get lucky, you can hook up to 20 free spins with retriggers! This is a great game to play for real money, even if fishing isn't your favourite pastime. In addition, the series has several slot games to try if you like this one!
Where to play: BetUK with 50 no wagering free spins.
7. Aloha! Cluster Pays
| RTP | Volatility | Max Win |
|---|---|---|
| 96.42% | Low | 2,000x |
The Cluster Pays mechanic by NetEnt makes this terrific tiki-themed game stand out from the crowd. Rather than remembering which paylines are valid, you just need to count the symbols touching in this 6x4 grid.
Any cluster of 9 or more identical symbols will payout, and a substitution symbol can become part of any cluster. Sticky Win Re-Spins will hold the winning cluster in place and spin the reels around it to increase the winning combo.
Where to play: Dream Vegas Casino with 150 free spins and a £300 bonus.
6. Blood Suckers
| RTP | Volatility | Max Win |
|---|---|---|
| 98% | Low | 1,014x |
Blood Suckers is one of the best-paying online slots with an RTP of 98%. This means your chances of winning are much better when playing this NetEnt classic versus a 95% RTP slot. However, most bonuses exclude Blood Suckers from wagering for that specific reason.
If you decide to give the vampire-themed slot with a 5-reel, 3-row layout a spin, you might end up in the vampire-slaying bonus game! It's one of the best bonus rounds with intricate details, several actions you can take, and big wins!
Where to play: Videoslots Casino with a £200 bonus.
5. Bonanza Megaways
| RTP | Volatility | Max Win |
|---|---|---|
| 95.98% | High | 12,000x |
Big Time Gaming's first Megaways slot title is worth checking out if you want a good introduction to the Megaways mechanic. The highly volatile slot Bonanza is a 6-reel slot game with up to 117,649 Megaways that can reward players with a maximum win of up to 10,000x their stake.
This is a high volatility game, so it may take some time to make it to the mini bonus game, but slot players can really strike gold in the bonus round. In the bonus feature, you get 12 spins and can retrigger 5 more, making this one of the best bonus games out of all online slot games on this list.
Where to play: Casumo Casino with a £100 bonus.
3. Gonzo's Quest
| RTP | Volatility | Max Win |
|---|---|---|
| 95.97% | Medium | 2,500x |
This legendary video slot game was NetEnt's first runaway success, and you can also find a Megaways version and a live casino game! In the original Gonzo's Quest slot, you follow Gonzalo Pizarro on his hunt for the city of gold: El Dorado.
The 5x3 layout isn't a classic spinning slot. Instead, the symbols tumble from top down, and winning combinations disappear, leading to more symbols dropping to the grid and possibly triggering more wins! There is also a treasure trove of bonus features to unlock, including the Free Fall feature.
2. Book of Dead
| RTP | Volatility | Max Win |
|---|---|---|
| 96.21% | High | 5,000x |
Play'n Go's Book of is the most enduring slots franchise. The protagonist Rich Wilde appears in a range of slots, and his daughter Cat Wilde continues the legacy with further expeditions. Book of Dead is the best in the online slots series with an interesting theme and plenty of bonus features.
The symbols in this highly volatile slot include a Phoenix, the Pharaoh, Anubis, the God of the Afterlife, and the Book of the Dead, of course. The graphics and storyline are very well done, making this slot game stand out.
Where to play: PlayGrand Casino with 30 Book of Dead free spins no deposit!
1. Starburst
| RTP | Volatility | Max Win |
|---|---|---|
| 96.09% | Low | 500x |
Almost every review site puts Starburst at the top of their list of best slot games, and for good reason! There are so many free spin welcome bonuses available on Starburst for UK players that this game is a classic choice for beginners, and the zen-like simplicity continues to please experienced players.
Although there are just 10 paylines, the win both ways feature allows you to win from right to left, which isn't available on all slots.
Where to play: Gentleman Jim Casino with 200 spins or Space Wins Casino with 5 Starburst free spins no deposit.
Summary of the Best Games
| Slot Game | RTP, Volatility | Max Win |
|---|---|---|
| 1. Starburst | 96.09%, Low | 500x |
| 2. Book of Dead | 96.21%, High | 5,000x |
| 3. Gonzo's Quest | 95.97% | |
| 4. Bonanza Megaways | 95.98%, High | 12,000x |
| 5. Blood Suckers | 98%, Low | 1,014x |
| 6. Aloha! Cluster Pays | 96.42%, Low | 2,000x |
| 7. Big Bass Splash | 96.71%, Medium | 5,000x |
| 8. Mega Moolah | 88.12%, Medium | Progressive Jackpot |
| 9. Dead or Alive | 96.82%, High | 111,111x |
How We Picked the Best Online Slot Games
Many different factors make us consider a game as a great slot game. These are the elements we considered when choosing these ten as the best slot games.
- Return to Player (RTP): This percentage is the amount of money you can expect to win back from a game over a long period; most online slots return around 96p per £1. Our picks also hover around this average, with a few exceptions.
- Volatility: Low volatility slot games will pay out similar, smaller amounts for each win. Higher volatility online slots have bigger prizes, but these occur less frequently. It's up to your personal preference which type you like more, so we picked a mix.
- Game Developers: There are hundreds of slot providers, each with their own strengths and special features. We picked from the best-known providers' catalogues; the top 10 slots come from NetEnt, Play'n Go, Microgaming, Barcrest, and Big Time Gaming.
- Free Spins & Bonus Rounds: The best online slots have in-game free spins or bonus rounds that give you more opportunities to win and increase the fun.
- Visuals & Sound: We like the graphics on all of these slots, and appreciate the artistry that went into designing them.
- Engaging Theme: As you can tell, there are a ton of different themes. These ten are just the tip of the iceberg, but we hope at least one of the themes suits your palate!
Top Slot Games UK by Type
Now that you've checked out our top 10 best slot games online, you might also want to explore some other options. We've selected a few different slot categories we like to play and picked the top 3 games for each!
You can find most of these games on all the online casinos we recommend, so if you like the sound of these slot games, pick a casino bonus from the list above and sign up to play! If none of these sound like fun, no worries—there are hundreds of slots to play on every online casino, so you will definitely find a favourite.
New Slots
New slot games pop up more often than new slot sites. That's why keeping up with the top games launched recently can be difficult. You can check out our list of the new slots UK or pick one of the best online slots which have come out in the past few months:
| Online Slot | RTP & Volatility | Max Win |
|---|---|---|
| 1. Ms Robin Hood | 96.19%, High | 12,574x |
| 2. Area Link Dragon | 96.50%, High | 5,000x |
| 3. Candyways Bonanza Megaways | 96.01%, Medium | 20,000x |
Megaways
Megaways mechanism was originally developed by Big Time Gaming and now many software providers offer Megaways slots in the UK. We already picked Bonanza as one of our top 10 online slots, but out of the remaining Megaways, here are the top three we recommend the most:
| Online Slot | RTP & Volatility | Max Win |
|---|---|---|
| 1. Buffalo Rising | 96.50%, Medium to High | 50,000x |
| 2. Return of Kong | 96.03%, Medium to High | 50,000x |
| 3. Temple of Treasures | 96.46%, High | 50,000x |
Progressive Jackpots
Progressive jackpot slots are some of the best slot games since you never know when you might get lucky and win the whole thing! For some, the best jackpot slots are the Daily Drops, which are won every day. Aside from Mega Moolah, here are our top three online slots for progressive jackpots:
| Online Slot | RTP & Volatility | Paylines |
|---|---|---|
| 1. Age of the Gods | 95.02%, Medium | 20 |
| 2. Mega Fortune | 96%, Low | 25 |
| 3. Divine Fortune | 96.59%, Medium | 20 |
Penny Slots
Penny slots are the best option for players who wish to make small bets when they play. These online slots let you place just 1p bets on each payline, and the best ones let you adjust the number of paylines you bet on. Here are the top penny slots right now:
| Online Slot | RTP & Volatility | Max Win |
|---|---|---|
| 1. Unicorn Legend | 95.38%, Medium | 1,000x |
| 2. Cleopatra | 95.7%, High | 10,000x |
| 3. Rich Wilde and the Aztec Idols | 94.15%, Medium | 150x |
Classic Slots
You might have seen classic slots in old movies about Vegas: simple with few extra features. These online slots have the classic fruit symbols, 3x3 grids, and much more for those players who enjoy old-timey things! Our favourite classic online slots are:
| Online Slot | RTP & Volatility | Max Win |
|---|---|---|
| 1. DaVinci Diamonds | 94.94%, Medium | 25,000x |
| 2. Juicy Reels | 96.49%, Low | 50x |
| 3. Fire Joker | 96.00%, Medium | 800x |
What Else You Need to Know
When the first slot machine was patented in 1894, the game was simpler than today's more immersive and imaginative slots. We have come a long way from the early one-armed bandits and fruit machines where players just pulled a lever and matched three symbols across the centre of the reels.
Now you can play the best slots online from your own home. We only recommend slots sites licensed by the UK Gambling Commission (UKGC), so you can always play safely on any casino you pick from our listing.
In addition to picking the online slots and top slot sites to play, you should keep a few things in mind when playing online slot machines.
Random Number Generator
To win on a slot game, you need to line up three or more of the same symbols on the reels, and different combinations give you different win multipliers. This happens with a Random Number Generator (RNG), which determines where the symbols on the reels land in each spin.
Each casino has to prove that the RNGs they use are truly random and checked regularly. This means the slot games at legal online casinos are fair, and there is no way to fool the system or rig the wins.
Slot Developers
Many software developers provide games for UK online casinos. Many have created different versions of a single slot game or a series of slots with the same theme and features.
For example, Play N' Go has created several "Book of ..." slots which feature the same characters on similar adventures!
If you find a developer you like, you can look up their games with the search function at the casino. Most casinos have at least 10 or so games from each developer they have on the site, so you should always find some options.
Mobile Versions
If you want the convenience of playing slots on your phone, you no longer need to hunt for a special mobile slots site or dedicated slots app because virtually all casinos are fully optimised for mobile players.
Not only can you expect the same quality of gameplay on your phone as on your desktop, but most games are now designed on a mobile-first principle, so they are best played on mobile devices.
Most online slots can be accessed through the browser on your mobile for instant play, and the best UK slots sites have mobile apps for Android and iOS devices.
Bonus Offers
Finally, check out the bonus offers listed on BonusFinder UK to make the most of your gaming session. We have several excellent online casinos where you can use bonus money to play the best slot games we listed above.
You should always read the T&Cs for each casino bonus UK before claiming it, as the wagering requirements and minimum deposits can vary significantly.
If you wish to practice the game play before committing any money, try free demo slots games to play in the UK.
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