Jackpot Casino: Compare progressive jackpot slots at casinos in the UK 2025

The Top 10 Progressive Jackpot Slots at UK casinos

As mentioned above, most of the biggest prizes are progressive jackpot slots. Below, we will cover the main progressive jackpot slot games available to UK players. We've also included the return to player (RTP) percentage to give you an idea of the average payout. However, it's worth noting that massive jackpot slots have lower RTPs than video slot games.

Mega Moolah (Microgaming) – 88.12% RTP

The world-record-holding series of progressive jackpot slots. Jackpot slot games such as the original Mega Moolah, as well as sister titles like Mega Moolah Isis, Mega Moolah Absolootly Mad and Mega Moolah Atlantean Treasures, have paid out millions of pounds in jackpots several times. And as far as top progressive jackpots go, Mega Moolah is always the one to beat.

Mega Fortune Dreams (NetEnt) – 96.40% RTP

Hot on the heels of Microgaming's Mega Moolah is Mega Fortune Dreams by NetEnt. This one is a sequel to the super popular original – called Mega Fortune. Moreover, it has the second-highest online casino jackpot amount in history. Mega Fortune Dreams takes action on a luxury yacht where the Rapid, Major, and Mega jackpots can be won simultaneously.

Divine Fortune (NetEnt) – 96.70% RTP

Divine Fortune and Divine Fortune Megaways again show NetEnt's ability to craft engaging progressive jackpots. This one is like an Egyptian treasure hunt that would make Indiana Jones happy but set in a world of myth, ancient artefacts and fabulous wealth. Again, Rapid, Major and Mega jackpots and plenty of bonus spins and extra features are available.

Arabian Nights (NetEnt) – 95.22% RTP

NetEnt again delivers the goods with the Aladdin-inspired Arabian Nights jackpot slot. Although the game looks slightly dated, it's dead simple to play. This is no doubt helped by its fixed pay line structure. Plus, its low-medium volatility means it frequently delivers smaller wins. And, of course, it's been known to pay out millions of pounds, too!

Leprechaun's Luck (Playtech) – 88.01% RTP

We head to the land of lush green hills, pots of gold and four-leaf clovers for this one. Of course, it's a tongue-in-cheek game based on some of Ireland's most well-known stereotypes. And with its multiple bonus rounds, scatters and wild symbols, it is a lot of fun. Just note that the high volatility rating means its big wins can be few and far between.

King Cashalot (Microgaming) – 90.59% RTP

Ranking alongside Mega Moolah in the Microgaming top five progressive jackpots is King Cashalot. This quirky jackpot slot is loosely based on King Arthur and the Knights of Camelot but with a jackpot king in charge of the realm. Featuring nine paylines, multipliers and free spins, it's a popular one to try out. Plus, the jackpot creeps above one million quid regularly.

Hall of Gods (NetEnt) – 95.70% RTP

Another excellent NetEnt progressive jackpot slot to try out is Hall of Gods. This one takes Norse mythology to another level, and it once made a UK player almost £8 million better off. Hall of Gods is a high-octane jackpot slot with expanding wilds, scatters, and a Pick Win feature. There's also a nifty bonus game where you can chuck Thor's Hammer to win prizes.

Beach Life (Playtech) – 93.25% RTP

Relax with the Beach Life progressive jackpot slot if you like to take things a little easier. This super colourful Playtech slot brings sunshine, sunbathers and ice cream to the reels. And while that sounds like Cornwall in the summer, this one is a year-round paradise based in the tropics. There's even a Sunken Treasure bonus round and the chance to win the big jackpot.

Major Millions (Microgaming) – 89.37% RTP

Microgaming gets yet another spot on our top 10 list of best progressive jackpots with Major Millions. Another record-breaker, this 15-payline progressive jackpot slot certainly lives up to its name. However, note that you have to bet the maximum and cover all the paylines to be in with a shot at the progressive jackpot. To do this, make cash stakes of £3 on each spin.

Mega Joker (NetEnt) – 99.00% RTP

Last but not least, we wanted to highlight NetEnt's old gold progressive jackpot slot: Mega Joker. As casino games go, this one is aimed at retro slot lovers – however, the impressive RTP of 99% means there are plenty of returns in store without even considering the main jackpot cash funds. Five paylines are available on each spin, making it dead easy to play.

How to Choose a Jackpot Casino with Progressive Games

New UK customers looking to play progressive jackpot slot games must find a decent online casino first. And we heartily recommend reading through a few of our online casino reviews before taking the plunge. Here, then, are the key areas to consider before signing up:

Welcome Bonus and Free Spins

The welcome bonus (or first deposit bonus) draws in new players. And the same is true regarding free spins (or bonus spins). But it's essential to consider the first deposit amount and what casino games are available for free spins and bonus spins. For example, we can guarantee that progressive jackpot slots won't be included. Bonus funds contribute to video slots.

Wagering Requirements

While the qualifying deposit for your welcome bonus and free spins may be low, you must weigh the wagering requirements. That's because wagering requirements must be completed before your bonus fund winnings can be withdrawn. Also, most non-jackpot slot games contribute 100% to wagering requirements, but others will be less.

Progressive Jackpot Slots

While your welcome bonus and free spins cannot be used on jackpot games – only regular slot machines – you'll want a decent selection of progressive jackpots available for later on. And this primarily comes down to the game providers. So, when new players pick a casino site, ensure the games are from one or more top providers like Microgaming, NetEnt, and Playtech.

Other Casino Games

While online slots with progressive jackpots are undoubtedly fun, they're not the be-all and end-all. Regular online slot games still enable you to win thousands if you land the top prize. And don't sleep on other casino games. Table games like online roulette, blackjack and baccarat are great fun too. And then there's the Las Vegas experience offered by live casino games.

Payment Methods for UK players

New players will need a way to add cash funds into their accounts and claim a first deposit bonus. However, not all payment methods for gambling are accepted for casino welcome bonus offers. Therefore, if you want an easy life, you must choose an excellent payment method for depositing, withdrawing and claiming a welcome bonus offer.

Customer Support and Help

The best online casinos help new players get started with round-the-clock customer support. And even experienced players need a helping hand now and then whenever there's an issue. Having a friendly and knowledgeable customer support team behind you is worth its weight in gold. So, as well as being available 24/7, ensure there are live chat and email options.

Licensed and Regulated Sites

We only recommend casino sites licensed and regulated by the UK Gambling Commission. The reason for this is simple. Unlicensed sites are not worth the risk. Meanwhile, sites licensed and regulated by the UKGC are run by the book, adhere to marketing rules, and have enough reserves to payout jackpots. And finally, the UKGC always advises players to play responsibly.

The Biggest Online Jackpot Casino Wins of All-Time 🤑

We've mentioned huge jackpots a few times – but how big are we talking? Below, we'll go over the top five biggest jackpot wins. The numbers are genuinely quite astounding…

1. Mega Moolah Absolootly Mad – $23.6 million (£20+ million)

The Mega Moolah series takes the crown, but it's not the original in the top spot. That honour belongs to Mega Moolah Absolootly Mad – based on Alice in Wonderland and the Mad Hatter's Tea Party. Everything went down at the Napoleon Sports & Casino site in April 2021. A Belgian casino player experienced a slot machine meltdown and pocketed €19,430,723.60!

2. Mega Moolah – $23.5 million (£20+ million)

A whisker behind our anonymous Belgian was the former Guinness World Record holder of 2018. This largely unknown player was playing the original Mega Moolah at 75¢ (70p) a spin. The Microgaming online slot went bananas within fewer than 50 spins at Grand Mondial Casino. The rest is history. It held the record for three years and is still an epic win!

3. Mega Fortune – $21 million (£18+ million)

The venerable NetEnt appears in the top 5 wins on jackpot slot machines with Mega Fortune. The original Mega Fortune online slot (before Mega Fortune Dreams came along) kicked out eight figures to a lucky Finnish player in 2013 at the PAF online casino. And his 25¢ bet on the progressive won him a cool $21 million – a record that stood for five years.

4. Mega Moolah – $19.9 million (£17+ million)

The original safari-based jackpot slot Mega Moolah makes yet another appearance in the top five biggest wins. This one happened in 2015 to a young UK player staking just 25p a spin. A British soldier, Jonathan Heywood, played at Betway Casino when the unthinkable happened. Heywood thought he was dreaming at the time.

5. Arabian Nights – $17.3 million (£15+ million)

Regarding progressive slots, jackpot hunters didn't consider NetEnt's Arabian Nights. No one at the time thought it would ever deliver a £15 million-plus jackpot. But a Norwegian player ignored all that while playing at Betsson Casino. Lucky for him, his session on progressive slots paid off big time. It just goes to show that anything can (and does) happen!