Biggest Jackpot Slot Games

Updated: 8356

Discover the top progressive jackpot slots, including real-time trackers and which casinos to play at.

Biggest Jackpot Slot Games
Chris Taylor The King of Slots

20+ years in the gambling industry including 13+ years playing and reviewing slots.

Below you’ll find the best progressive jackpot slots available to play online. It includes details of each top jackpot game, the highest jackpots they’ve paid out and where best to play in the UK.

If you’re new to online slot sites or progressive jackpots, you may be surprised to learn that online jackpots of up to €38.4 million have been won.

One simple spin can see you landing a 7 or 8-figure jackpot. This incredible scenario has happened to countless people who hit gold with progressive jackpot slots.

Before you take your next possibly lucky spin, prepare yourself to be immersed in the phenomenal world of slot games with jackpots, as OLBG covers everything you need to know, from the best jackpot games to where to play in the UK.

Best Jackpot Slots

Some jackpot slots are simply a step above the rest. Players get to experience endless excitement, benefits, and, hopefully, a jackpot win. Below are the best progressive jackpot games for anyone who feels lucky.

# Jackpot Slot Studio Highest Jackpot Won
1 Mega Moolah Games Global €19.4 million
2 Mega Fortune NetEnt €17.8 milllion
3 The Finer Reels of Life WowPot Games Global €38.4 million
4 Dead Man’s Trail Dream Drop Relax Gaming €3 million
5 Age of the Gods Playtech £852,000
6 Bonanza Megapays Big Time Gaming £1.7 million
7 Hall of Gods NetEnt €7.7 million
8 Jackpot Giant Playtech £9.4 million
9 MegaJackpots Cleopatra IGT £2.15 million
10 Joker Millions Yggdrasil Gaming €7.8 million

1. Mega Moolah 

Mega Moolah slot banner

What makes Mega Moolah stand out from the rest? Well, this outstanding progressive jackpot slot is the most popular online. With nearly €600 million paid out, one lucky player walked away with €18.9 million in October 2018.

The African safari-themed game offers 4 types of jackpots, with the Mega Jackpot the biggest. While Mega Moolah looks rather dated graphically, the game holds the record for awarding the most 7 and 8-figure progressive jackpots. The average Mega Jackpot is won every 49 days and over €6.69 million.

4.4 / 5 11 Ratings

32Red Casino Review

  • No. of slots 376
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Fast Withdrawals. Regular Free Spin Offers at 32Red Online Casino. Sign up to for the best bonuses, frequent special offers and one of the largest game selections available

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2. Mega Fortune 

Mega Fortune slot banner

If you enjoy the relaxing fusion of casino slots and a luxurious vacation, Mega Fortune is for you. With 5 reels and 25 paylines, this NetEnt jackpot slot has an RTP rate of 96.6%. Playable from 25p a spin, it comes with free spins and a multiplier up to 5x.

This wonderful Monte Carlo-inspired slot offers incredible wins with its 3 progressives. The Mega Jackpot paid out €17.86 million in January 2013. The average jackpot is over £2.96 million and is won every 105 days on average.

4.9 / 5 9 Ratings

Duelz Review

  • No. of slots 1000+
  • Payout speed Instant Options
  • Win rate 96.5%

Duelz offers a trustworthy and feature-rich casino, with a big slot collection, Duelz Prizes, and a top tier selection of deposit and Instant withdrawal options

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3. The Finer Reels of Life WowPot

The Finer Reels of Life WowPot slot banner

The Finer Reels of Life WowPot slot celebrates all things luxury. With 5 reels and 243 ways to win, this Games Global/Microgaming game can be played from 30p a spin. Offering a total of 9 bonus features, it comes with random Wild reels and 4 free spins features.

The latter offer 5x multipliers, rolling reels with an increasing multiplier, added wilds and Burning Wild multipliers. There are also 4 progressive jackpots to be won randomly. If you land the WowPot jackpot, you’re guaranteed at least £2 million. The most the WowPot jackpot has paid was €38.4 million in December 2023 (which is a world-record).

4.9 / 5 8 Ratings

Casushi Review

  • No. of slots 1110
  • Payout speed 24 hours
  • Win rate 97%

Inspired by Japanese culture and food, Casushi is a unique and fun online casino that wants to help you find your “Zen of Happy Play.”

  • Excellent website deisgn
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4. Dead Man’s Trail Dream Drop 

Dead Man’s Trail Dream Drop slot banner

Dead Man’s Trail Dream Drop is from Relax Gaming and has 5 reels and 40 paylines. Playable from 20p per spin, this pirate-themed jackpot slot has a Trail Bonus feature where you collect prizes as you roam around the board. Mystery Chests will award various special symbols which affect the Tile values.

Persistent symbols apply on each turn which can lead to 30,000 x bet max wins. There are also 5 progressive jackpots up for grabs in the Dream Drop Bonus feature. The biggest of them of all is the Mega Jackpot which pays up to €3 million.

4.2 / 5 13 Ratings

Casumo Casino Review

  • No. of slots 2900
  • Payout speed Instant - 24 Hours
  • Win rate 95.98%

More than 2,900 slots, a full house of classic casino games, and a Live Casino that puts you at the very heart of the action with instant withdrawals. Welcome to the Casumoverse.

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5. Age of Gods

Age of Gods slot banner

The first game in the series, Age of the Gods, is from Playtech and has 5 reels and 20 paylines. It comes with 4 free spins features offering 5x multipliers, up to 5 wilds on every free spin, expanding wilds and increasing multipliers. This can result in 50,000 x bet max wins.

With 4 progressive jackpots, the Ultimate Power Jackpot pays an average of £499,000 every 44 days. It paid a maximum €984,763 in October 2011.

4.2 / 5 13 Ratings

NetBet Casino Review

  • No. of slots 500+
  • Payout speed 24 Hours
  • Win rate 96.54%

NetBet Casino is the best place to find every kind of online casino game from slots and jackpots to card and table games. Find an old favourite or make new discoveries every day

  • Vast Game Library
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6. Bonanza Megapays

Bonanza Megapays slot banner

Bonanza Megapays is by Big Time Gaming and is the jackpot version of Bonanza Megaways. With 6 reels and up to 17,649 ways to win, you can spin away from 20p a spin on all devices. In terms of bonus features, there are Reactions which can give you consecutive wins. There’s also a Free Spins feature with an unlimited win multiplier. This can lead to 17,926 x bet max wins.

The randomly-triggered Megapays feature sees a random symbol acting as the Megapays symbol. Each of them locks in position and respins follow. The more you get, the higher up the Megapays Ladder you’ll go: there’s 4 jackpots to be won. If you get 15 or more, you’ll win the Mega Jackpot which begins at £300,000 and has paid up to £1.7 million before.

4.4 / 5 8 Ratings

Party Casino Review

  • No. of slots 3000+
  • Payout speed 24 Hours
  • Win rate 95.35%

At PartyCasino, you will find our online casino site has a wide range of all your favourite casino games at stakes to suit all bankrolls and our friendly, professional dealers will be on hand to help you every step of the way

  • Over 3000 Slot Titles
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7. Hall of Gods

Hall of Gods slot banner

While several multi-million wins over the years have been made, NetEnt’s Hall of Gods is a real contender for the best progressive jackpot slot, players keep returning because of the slot’s impressive features. Players might feel that the game’s graphics are a bit dated, but this jackpot favourite makes up for that with terrific bonus features.

5 reels and 20 paylines are perfectly combined with expanding wilds, free spins with a 3x multiplier and 4,314 x bet max wins. With 3 jackpots, the biggest ever Mega Jackpot won was €7.78 million in April 2015. The average Mega Jackpot win is €5.6 million every 160 days on average.

4.3 / 5 7 Ratings

Playzee Review

  • No. of slots 2000
  • Payout speed 24 Hours
  • Win rate 95.45%

With a wicked welcome bonus and daily promotions the action is always switched fully up on Playzee casino. Huge Slot range and Table Games too. Come meet Zeegmund!

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8. Jackpot Giant

Jackpot Giant slot banner

There are many attractive features that make Jackpot Giant a top-notch jackpot slot. With 5 reels and 50 paylines, this volcano/Stone Age-inspired game from Playtech can be played from 50p a spin. It comes with a pick-me style game for cash prizes and 50,000 x bet max wins.

Jackpot Giant is all about the progressive jackpot which is won by landing 5 wilds on payline 1. You also need to play at £4 per spin though. Whilst this is high, the average jackpot win is £4.5 million every 155 days. The most ever won was £9.4 million in October 2018. 

4.3 / 5 10 Ratings Review

  • No. of slots 1000
  • Payout speed 1-3 Days
  • Win rate Variable

Play Games at slots, progressive jackpots, instant win and many more

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9. MegaJackpots Cleopatra

MegaJackpots Cleopatra slot banner

MegaJackpots Cleopatra is the jackpot version of the Las Vegas favourite, Cleopatra). With 5 reels and 20 paylines, this ancient Egyptian-themed classic benefits from doubling wild reels and free spins with a 3x multiplier. A win during the free spins with a wild will see a 6x multiplier applied for wins of up to 9,950 x your total bet.

There is a MegaJackpots feature which can be triggered in 2 ways. The average jackpot is £893,634 every 57 days with the biggest jackpot £2.15 million.

4.2 / 5 10 Ratings

BetVictor Casino Review

  • No. of slots 1000
  • Payout speed 24 Hours
  • Win rate 96.82%

BetVictor Casino offers the full range online casino experience including some of the best live dealer tables available.

  • Super Quick Withdrawals
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10. Joker Millions

Joker Millions slot banner

From Yggdrasil Gaming, a progressive jackpot can be won by playing the classic-themed Joker Millions. With 5 reels and 25 paylines, it comes with sticky wilds and respins. It’s all about the Joker Spin which is triggered when a Joker symbol lands on each reel. Offering cash prizes, you’ll pocket the jackpot if you fill the screen with 15 Jokers.

With the jackpot seeded at €100,000, the biggest win was €7.8 million in November 2018 at LeoVegas Casino. The average win is just under €3 million every 6 months.

4.5 / 5 2 Ratings

LeoVegas Casino Review

  • No. of slots 2000
  • Payout speed Instant - 24 Hours
  • Win rate 96.9%

No wonder LeoVegas has won 'best online casino' - Fast Withdrawals, 65 Live Tables and a tiered loyalty system, not to mention just about every slot game you could remember.

  • Incredible range of slots from top suppliers
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Progressive Jackpot Winners

The biggest progressive jackpot win to date was on the Wheels of Wishes slot game by Microgaming/Games Global, and the jackpot was an astounding €38.4 million. It is a massive win, and in fact, it is double the amount of the second biggest win, which came in at €19.4 million (on Absolootly Mad: Mega Moolah). Here are the 4 biggest progressive jackpots won online to date:

Biggest Progressive Jackpots Wins graphic

Jackpot Networks

As you may have gathered from some of the games above, many are part of jackpot networks or series. For example, Games Global built on the success of Mega Moolah by creating a Mega Moolah jackpot network.

Progressive jackpot networks or series have been increasingly popular. As a result, more games contribute to the jackpot pots which makes them go even higher. Below is a section dedicated to the top networks which have multiple slot games you can play and still win the same prize.

Mega Moolah Series

Inspired by the iconic Mega Moolah, there are over 15 Mega Moolah jackpot slots. With a variety of themes and bonus features, this series from Games Global has paid out nearly €600 million since 2006.

There are lots of incredible games in this stellar series including Absolootly Mad: Mega Moolah (which awarded a €19.4 million win in April 2021),  Immortal Romance: Mega Moolah and Thunderstruck 2: Mega Moolah.

WowPot Series

True to the name, this series of jackpot casino slots by Microgaming (or Games Global as they are now known) wows players with its unbelievable real-time jackpots. Starting at an impressive £2 million, the jackpot grows progressively until someone wins. A very fortunate player walked away €38.4 million richer in December 2023. That’s a world-record online jackpot by the way.

For more details, check out Games Global’s press release on the €38,461,200.95 jackpot win.

With those mind-blowing numbers, it isn’t a surprise that WowPot has become one of the best progressive jackpot networks. In addition to great winnings, the series offers a fantastic selection of thrilling games, including Book of Atem WowPot and Wheel of Wishes (WowPot).

Dream Drop Series 

This superb series from Relax Gaming is also making headlines thanks to its incredible jackpots, fun gaming options, and cool features. The series offers 5 progressive jackpots, ranging from Rapid to Mega jackpots. A lucky player enjoyed a €2.97 million payout not too long ago (February 2024) and there have been 14 Mega Jackpot winners to date (at the time of writing).

Relax also offers the Dream Drop jackpots to other providers including 4ThePlayer and Print Studios. As a result, there are many Dream Drop jackpot slots to choose from. One of the most popular is Volatile Vikings 2 Dream Drop which has a viking theme and uses Scatter Pays. With multipliers up to 100x, treasure chests and free spins, there are 5 jackpots to be won randomly.

Age of the Gods Series 

Players who enjoy Greek mythology will adore the theme of the stunning Age of the Gods series offered by Playtech. With 4 progressive jackpots, the series gives players unmeasurable exhilaration and great payouts. The most popular progressive jackpot spin is Ultimate Power, which seeds at £100,000.

In terms of the series, they are based on various ancient Greek gods and deities and all offer superb graphics and awe-inspiring bonus features.

Megapays Series

With its biggest jackpot standing at £1.7 million, Megapays by Big Time Gaming is one of the best jackpot slots networks online today. Megapays offers 4 progressive jackpots with the Mega Jackpot beginning at £300,000. BTG offers you titles such as Bonanza Megapays, Star Clusters Megapays, Danger High Voltage Megapays and Who Wants to be a Millionaire Megapays.

Relax Gaming teamed up with Big Time Gaming to create The Great Pigsby Megapays. With 6 reels and up to 117,649 ways to win, it comes with expanding wilds and multipliers, respins with up to 5 wild reels and multipliers and free spins with higher-value symbols on the reels. Offering 20,000 x bet payouts, the Megapays jackpots are won randomly.

MegaJackpots Series

IGT remains a monster in the gaming industry thanks to its massive success with the MegaJackpot series. With epic games such as Cleopatra MegaJackpots and Siberian Storm MegaJackpots, this series is more popular than ever before.

The series provides players with unforgettable action, a wide of jackpot slots to choose from and a more land-based, classic feel. Their record jackpot win was a jaw-dropping $2.72m (£2.15m) in 2013.

Jackpot King Series

The Jackpot King network is from Blueprint Gaming. These jackpots work a little differently from those above as they are local or network jackpots. This means they each jackpot is specific to a casino or casino group.

Popular Blueprint Gaming slots such as The Goonies Return, Diamond Mine Megaways, Eye of Horus, Fishin’ Frenzy and Ted all have Jackpot King versions. The biggest win is different for each casino or casino group but the highest we found was €8,133,445.23 in April 2021 (playing Deal or No Deal Megaways Jackpot King).

How do Jackpot Slots Work?

As the popularity of jackpot slots increases, it is only natural to wonder how exactly these exciting games work. Progressive jackpots are built up by adding a percentage of a player’s wages to the pot. These amounts are known as the seed of the pot. As more players join and bet, the pot increases. The jaw-droppingly cool aspect of this is that multiple online casinos can host the same progressive jackpot games, so the progressive jackpot winners could be scattered all over the world.

Thanks to the machines’ random number generators, also known as RNGs, players are unable to cheat the system, resulting in safe and fair slotting experiences.

Due to its growing popularity, players can enjoy a choice of 4 different jackpot slots, including progressive jackpot slots, fixed jackpots, local or network jackpots, and must-drop or win jackpots. Each of these has its own allure, so it’s worthwhile to look at each individually:

  • Progressive Jackpot Slots: These awesome slots have become the talk of the town in the gambling world because of their big wins and great features. Perhaps the most impressive thing about these slots is that most of them allow a low minimum bet, so players can try their luck without breaking the bank. A player could become a winner with just a few coins invested in the slot. The science behind these slots makes it so that it is fair to all players; if luck is on your side, you’ll win big.
  • Fixed Jackpots: Players who enjoy the clarity of knowing how much they are playing for enjoy fixed jackpots more than progressive jackpot slots. These jackpots are also known as non-progressive because the amount doesn’t change when more players join the game. While these games might not offer the same thrill as progressive jackpot slots, they still allow players to walk away with a good sum of money.
  • Local or Network Jackpots: If you enjoy sticking to what you know best, these jackpots are probably for you. These are casino-specific jackpots, and they have the added benefit of being familiar to those who love their local casino. While the winnings might not be as life-changing as some progressive jackpot slots, there are certainly people who have won 7-figure sums with local jackpots. An example is NetEnt's Divine Fortune
  • Must-Drop or Win Jackpots: If you like bigger odds of winning a smaller amount, must-drop jackpot slots are the way to go. These exciting slots also work on a progressive system. However, the biggest difference is the fact that they are capped at a certain amount. While this amount is always much lower than what you’d find at progressive jackpot slots, the limited time frame increases the odds of winning greatly.

Now, while each of these has its advantages, it can be confusing to know which one is the perfect slot for you. Luckily, you are able to take each one on a lucky test drive with the free jackpot slots that are offered in demo mode, right here at OLBG. Unfortunately, players won’t get to enjoy big winnings while playing in demo mode, but they can get a feel for the game's features, speed, and bonuses.

Players who dream about striking it big need to keep in mind that the RTP rates are lower when it comes to jackpot slots. The reason for this is the RTP contributes to the pot, so while you stand a chance to win big, your RTP is affected. Online slots generally offer better RTP rates because they don’t have to fund the jackpot seed. This doesn’t mean that there are no jackpot slots with impressive RTP rates.

Tips to Play Jackpot Slots

Most of us dream of winning big, but we might not realise that by following these tips, we can significantly increase our odds. Beginners might feel discouraged when they find that they simply aren’t lucky. However, it is best to keep the following tips in mind:

  • Keep track of the time and your spending: As with any form of gambling, it is crucial to know when to stop. If you don’t keep an eye on the time, you might find that you’ve spent hours and much more than you intended.
  • Take the time to study the game’s features: Sometimes, we miss a big chance because we simply aren’t informed. That is why it is worthwhile to take the time to study a slot’s Paytable. By doing this, you’ll understand what is at risk while you play. Check out the slot reviews here at OLBG which explain every jackpot slot’s game features.
  • Make the bonus features work for you: When it comes to selecting a jackpot slot, it is best to choose one that comes with added bonus features. To get a better idea of which jackpot slots offer valuable bonus features, look at OLBG’s detailed slot reviews.
  • Practice for free first: If you see that a jackpot slot doesn’t offer free spins or free demo play, it might not be the best game for someone who is just getting started. By taking advantage of free games, you can get comfortable with the speed, volatility, and risks of the game before actually spending your hard-earned cash.

Pros and Cons of Jackpot Slots

As with most things in life, there is an upside and a downside to jackpot slots. The essential question is whether the pros outweigh the cons.


Massive wins, similarity to regular slots, available at all slot sites, thrill of a big win landing


Lower RTP rates, max bets might be needed, decreased odds


If you like to play progressive jackpot slots, you are spoiled for choice with the outstanding selection of jackpot slots available. While these insanely fun games all offer excitement, the chance to win a 7 or 8-figure jackpot is certainly real.

I would personally recommend checkout out our detailed reviews and playing them for free first. Once you’ve comfortable, find a casino/slot site that offers the game and hope for the best.

Jackpot Slots FAQs

  • What are progressive jackpot slots?

    Unlike standard slot games that have a set win amount, progressive jackpot slots have a pot that keeps growing in size as players continue to place bets.

  • Does anyone ever win progressive jackpots?

    While the odds are slimmer than must-deal jackpots, there are players who have walked away with 8-figure progressive jackpots. The world’s biggest jackpot is €38.4 million.

  • What are the chances of winning jackpots?

    Since not all slots are created equal, they don’t offer the same odds for a big win. The odds of winning range from a 1 in 5,000 chance to a 1 in 30 million chance. That being said, if you don’t play, you can’t win.

  • Are jackpot slots fair?

    Absolutely. These slots have been designed to give every single player the same odds of winning.

  • What is the most popular progressive jackpot slot?

    Mega Moolah by Games Global/Microgaming is the champion when it comes to the most popular progressive jackpot slots. It's paid out nearly €600 million since 2006. 

  • How often are progressive jackpots won?

    A rough estimation is that a win can be expected in about 1 in 50 million spins for most jackpot slots.

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