How do you give yourself a better shot at winning cash prizes worth more than £1 million? The answer is simple: play the best payout slots. That’s easier said than done if you don’t know which slots offer the biggest payouts.
Fortunately, I’ve spun my way around the block more than a few times, and I know what the highest payout slots are. More importantly, I know where to find them, and if you stick around for the next few moments, I’ll reveal all.
My strategy when it comes to finding the highest payout slots in the UK focuses on two metrics: RTP values and jackpots. I’ll talk about the top-paying slots jackpots and how they work in the next section.
Before that, we need to discuss the importance of RTP values. Otherwise known as Return to Player (RTP), this value tells you the house edge for a given game. For example, if the RTP is 97%, the house edge is 3%. In practice, this means you’ll win, on average, 97% of the time. So, if you bet £1 for 1,000 spins, you’d expect to get £997 back.
Now, I know what you’re thinking. If you wager £1,000 and get £997 back, you’ve lost £3. True, but it’s important to understand that RTP values are theoretical averages. This means results in any given session fluctuate. They converge around the average over time, but in a single session, you could have an RTP of 150%.
That’s what makes it possible to win when you play slots online. From this, logic tells us that you should play slots with the highest RTP values. A higher average RTP means the potential highs will be higher, and the potential lows won’t be as detrimental to your bankroll. That’s why I’m giving you my top 10 high RTP slots.
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Any slot that combines entertainment with a sky-high RTP has to be top of my list. Taking inspiration from old-school fruit machines, this fun-filled slot brings the heat with a 99% RTP and 2,000x jackpot. Those are impressive stats, particularly when you consider Mega Joker has three reels and a dual gameboard set-up.
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Simplicity is a quality that often gets overlooked in today’s gaming world. Don’t get me wrong, I love high-paying slots with tons of fancy features and animations. However, I’m also a traditionalist. I enjoy slots like Triple Bar that have three reels, no bonus features and a classic design. Yes, the jackpot isn’t very big. However, in terms of RTP values, it’s one of the top slots UK players can play.
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Madam Lucky is responsible for some of the best slots payouts online. The mystical gypsy theme is fun, and I love the fact that you can take a certain amount of control by playing the red/black game. By this, I mean that you can choose to gamble any prizes you win by playing the red or black bonus game. This feature contributes to Madam Lucky’s higher-than-average RTP.
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Marching Legions at Mr Vegas has one of the most visually entertaining designs I’ve seen. Unlike other best-paying slots, you’re looking down on the reels from above. This creates a unique dynamic that’s made even more interesting by the fact that you’re in the middle of the Roman Empire. In keeping with the theme, soldiers are a big part of the game and appear as standard symbols and part of marching stacks of symbols.
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I’ve been spinning slots for more than a decade, and I fully embrace the Megaways revolution. However, as entertaining as it is to have the number of paylines change on every spin, this feature lowers the average RTP value. Therefore, I was surprised to see that Aztec Jaguar Megaways, complete with its 117,649 paylines, offer some of the highest payouts in the UK.
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Three-slot machines often have high RTP values, and Golden Chance is a great example of this. The average slot RTP at UK online casinos is 95%, so this game is way above the norm. I love the tombola-style design, and the respin feature is a nice touch. For me, the real reason to try this high-RTP slot is its 5,000x jackpot.
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Slots from SYNOT aren’t widely available in the UK, but Mr Vegas has a few of them. That’s handy for anyone wanting generous slots payouts because games such as Multi Bricks have high RTP values. This particular offering has a 98.1% RTP that’s backed by multiplier wilds, free spins and a gamble feature.
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Another SYNOT slot worth checking out at some of the top UK online casinos, including Mr Vegas, is 8 Fruit Multi. I could make the joke that it gives you more than the recommended five servings of fruit per day, but I won’t because it offers much more than that. As well as a heady RTP and 2,500x jackpot, the avalanche feature makes it possible to turn single spins into a service of wins.
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27th Cabaret is a classic three-reel slot with a nice selection of modern features. There’s a gambling game that gives you a chance to double any prize up to 10 times. Your payout potential is also given a boost by an expanding wild, which appears in the form of a glamourous showgirl. This combination of features contributes to an RTP way above the industry average.
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The final game in my list of the 10 best payout slots is Moonlight Fortune 50. This game’s forest-themed mystical vibe is great, and I like the fact that you’ve got free spins and stacked wilds helping you along. For me, the main reason it stands out among the highest-paying slots online is its volatility. A medium volatility rating, in tandem with a 1,000x jackpot and high RTP, makes Moonlight Fortune 50’s odds better than other slots.
The top-paying slots always have progressive jackpots. Some fixed jackpot slots, such as Sweet Bonanza at Neptune Play Casino, have six-figure prizes. However, as impressive as £100,000 payouts are, they pale in comparison to progressive jackpots worth more than £1 million.
Before I reveal my favourite online slots, I’ll quickly talk about jackpots and how you can find the highest payouts. There are three types of progressive jackpots:
Now that you know a bit more about progressive jackpots, here are the 10 best-paying slots in the UK:
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It’s no coincidence that the central character in Mega Moolah is a lion. The king of the jungle reflects the fact that Mega Moolah rules that slot world. It might not have the same amount of razzmatazz and bonus features as other jackpot slots, but Mega Moolah remains the king of big-money payouts.
There are four progressive jackpots to play for, and the largest starts at £1 million. However, owing to this game’s popularity, it’s responsible for the highest payouts in online casino gaming history, including a world record jackpot worth over £17.9 million.
I recommend checking out the Mega Moolah spinoffs, including Mega Moolah Immortal Romance, at talkSPORT BET Casino.
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Another classic standalone jackpot slot is Major Millions. Released in 2009, Major Millions remains one of the best-paying jackpot slots in the world. The seed amount for this game (i.e. the smallest amount you can win) is £250,000. However, like Mega Moolah, Major Millions is responsible for some of the best slots payouts in history. I’ve seen it offer jackpots topping £2 million at Mr Vegas Casino. The highest payout ever for this game is more than £2.8 million.
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Mega Fortune was NetEnt’s 2009 attempt to compete with the highest-paying slots online, including Mega Moolah and Major Millions. Its progressive jackpots have been known to reach £15 million, but that’s not the only reason I like this game. The design is great, and it has more features than a lot of the top slots in this category. The real selling point, though, is the RTP. At 96%, you’ve got a better theoretical chance of winning prizes from Mega Fortune than you have with many of the highest-paying jackpot slots.
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King Kong Cash has become one of the most entertaining slot franchises in the UK over the last decade. One of the latest instalments was released in 2023 and added to the Jackpot King network. This means you not only get to spin in the jungle and play for free spins and cash-collect symbols but progressive jackpots worth more than £2 million.
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Like King Kong Cash Go Bananas, Fishin’ Frenzy is part of a franchise. The original game was fun, but its 500x jackpot didn’t make it one of the UK’s best-paying slots. Fortunately, the developers added it to the Jackpot King network, which means you get to fish for free spins and three progressive jackpots worth upwards of £1 million.
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I’d never seen Book of Atem until I joined talkSPORT BET Casino. Developed by All for One Studios and released in 2019, the original game contains a variety of features, including magic free spins, which can unlock payouts topping £125,000. A year later, it was added to the little-known but extremely generous WowPot network. This pushed Book of Atem’s payout potential beyond the £1 million mark.
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Diamond Jackpots has some of the highest payouts I’ve seen at talkSPORT BET Casino. It’s a retro slot machine, which I like. However, because it was released in 2017, it’s full of modern features. OK, so it’s not as innovative as the likes of King Kong Cash. However, with multipliers and the ability to play for £1 million jackpots for just 10p per spin, it’s right up there with the best slots for big wins.
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King Spin Deluxe is a fruit machine with a twist. That twist comes in the form of three progressive jackpots provided by Jackpot King. The reason I love this slot is the fact that you can win over £1 million on any spin. That means you can bet any amount you like (from £0.10) and secure a massive payout.
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If you’re looking for the best payout slot that flies under the radar, I recommend Temple Tumble 2 Dream Drop. The Dream Drop network means you can win one of five progressive jackpots, which is great. Temple Tumble 2 is also packed with more features than other progressive slots, including free spins, multipliers and exploding symbols.
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Winstar looks a bit like Starburst, which is a positive. The negatives are that it doesn’t have any free spins or respin features like Starburst. If that’s the case, why is it one of my 10 best payout slots? Firstly, the 96% RTP means you’ve got good odds. Secondly, there are mystery symbols that give you a shot at jackpots topping 50,000x. Add progressive jackpots to the mix and you’ve got a stellar slot.
How did I find the highest payout slots? I might be an industry expert, but the process of finding slots with seven-figure jackpots is actually very easy…
You can find the RTP for online slots in two ways:
One trick I’ll reveal right now is that RTP values can vary. Most slots have a fixed RTP, but some have ranges. Casino operators can adjust RTP values within these ranges if they wish. Therefore, you might find that the same slot has a different RTP at different casinos. That’s why it’s often a good idea to join a variety of online casinos and compare RTP scores for slots you enjoy.
The odds for slots aren’t as good as table games, but the jackpots are significantly higher. Indeed, when you look at the highest payouts ever recorded, they’ve all come from slots such as Mega Moolah rather than table games such as blackjack. Based on this, let’s take a closer look at how RTP values differ between casino games.
Progressive jackpot slots typically have lower RTP values than video slots and table games. Mega Moolah is a perfect example of this. The upside, however, is that these games offer the best payouts because everyone is contributing to a communal prizepool. What I will say is that newer jackpot slots, such as Fishin’ Frenzy, have higher RTP values than classics like Major Millions.
Table games give you the best odds. I can rephrase this and say blackjack games have the lowest house edge. Winnings aren’t guaranteed, of course. However, if you want the best shot at banking small prizes on a consistent basis, table games are the answer. My tip is to play blackjack and baccarat because they have the highest RTP values (over 99%).
Live table games match their digital counterparts in terms of RTP values. This means you can play blackjack and enjoy a 99% RTP. Game shows and novel variations of roulette, such as Lightning, have lower RTP values. However, the positive to these live games is the fact they have payouts topping 1,000x your bet.
Which software providers consistently publish the best-paying slots? Based on my research and the games listed in this guide, the following providers come out top in the payout stakes:
My top slots from Games Global are Mega Moolah and Major Millions.
The highest RTP slots from SYNOT are Multi Bricks, 8 Fruit Multi and 27th Cabaret.
The world’s leading slot provider is responsible for a ton of top-paying slots, including Mega Fortune.
All of the highest payout slot games within the Jackpot King, including Fishin’ Frenzy and King Kong Cash, come from Blueprint.
Relax Gaming slots such as Marching Millions are packed with features and animations, as well as having high RTP values.
I want you to get maximum value from the best-paying slot games online. So, to help tie up any loose ends and guide you in the right direction, here are three final things to consider.
The best payout slots in terms of RTP values in the UK are Mega Joker, Triple Bar and Madam Lucky. These online slots have RTP values in excess of 98% and are available at top-rated UK online casinos such as Mr Vegas.
The biggest-ever payout for a UK online slot game is £13,209,300. Jon Heywood from Cardiff won the record-breaking jackpot in 2015 by spinning in the winning combination on Mega Moolah at Betway. Globally, the biggest ever online slot jackpot is $23.5 million (£17.9 million).
The lowest RTP for an online casino game is under 90%. Mega Moolah is one of the most popular games with a low RTP value. It’s popular, despite its low RTP, because it offers the highest slot payouts worth more than £1 million.
Daniel Smyth
Daniel Smyth has seen the online poker, casino, and betting industry from every angle. He previously played poker semi-professionally before working at WPT Magazine as a writer and editor. From there, he transitioned to online gaming where he’s been producing expert content for over 10 years.
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