Best Progressive Jackpot Slots in 2025
Progressive jackpot slots are among the most exciting games you’ll find at an online casino, thanks to their ever-growing prize pools. In this guide, we’ll take you through the best progressive jackpot slots available right now and what makes them stand out.
Top 10 best new online slots
Here is a table of the most popular progressive jackpot slots and their game providers. We found that Irish-themed slots, together with animal and character-based slots like Pirates or Vikings, are particularly popular.
Progressive jackpot | Game Provider |
Mega Moolah | Games Global |
3 Lucky Hippos | PearFiction |
88 Fortunes | Light & Wonder |
221B Baker Street | Merkur Slots |
300 Shields | NextGen |
5 Lions | Pragmatic Play |
4 Fantastic Fish Gigablox | Yggdrasil Gaming |
40 Super Hot | EGT |
Totem Guardians Dream Drop | Relax Gaming |
Beach Invaders | NetEnt |
Mega Moolah
Spinning for the first time in 2006, Games Global (formerly Microgaming) designed this 25-payline slot to host one of the best progressive jackpots in the business.
Bonus Features
Free spins
Jackpot wheel bonus game
Popularity
No slot has handed out more jackpot winners than Mega Moolah, making it one of the most popular online progressive slots out there.
Volatility & RTP
High volatility
RTP - 93.42%
We recommend checking out this slot at trusted sites like 888 Casino and Unibet Casino, where the jackpot can reach up to £16.5m.
3 Lucky Hippos
Bursting onto the scene in 2024, this is one of the newest slots in the industry. Players are sent to the African wilderness to compete for anywhere between 243 and 7,000+ paylines.
Bonus Features
Cash collect boost
Hippo modifiers
LockNWin bonus
Popularity
Players who enjoy a nostalgic twist will enjoy this slot, with its aesthetic drawing inspiration from classic children’s games, particularly Hungry Hippos.
Volatility & RTP
High volatility
RTP - 96%
Our top picks to play 3 Lucky Hippos are at Pokerstars Casino and MrQ Casino where you can try and win the maximum prize of 5,000x your bet.
88 Fortunes
Brought to us by the creators at Light & Wonder, this title game holds a greater meaning in Chinese culture, the number 88 symbolises wealth and prosperity, something this slot hopes to pass on to its players.
Bonus Features
Wilds
Multipliers
Free spins
Popularity
Players are drawn in by the slot’s visuals and design, offering a unique oriental experience with the chance at a grand jackpot win.
Volatility & RTP
High volatility
RTP - 96.23%
To play this slot, we recommend checking out Slingo Casino or 666 Casino, where the grand jackpot reaches up to £200,000 in prizes at 2,272x the total stake.
221B Baker Street
Step into the world of Sherlock Holmes with the 221B Baker Street slot, a 20-payline game by Merkur that brings the legendary detective’s adventures to life with themed symbols and a mysterious soundtrack.
Bonus Features
Duel bonus round
Free spins
Multipliers
Popularity
Players who love the Sherlock Holmes stories will have a great time with this slot. The storyline takes you on a battle with his nemesis, Moriarty.
Volatility & RTP
High volatility
RTP - 95.39%
Our top pick for the 221B Baker Street slot is at Play OJOCasino where the prize is set at 5,000 your bet, up to £20,000 the bet.
300 Shields
If you’ve ever wondered what going to war is like, then look no further. This 25-payline slot sends players to the Battle of Thermopylae to join the Spartan soldiers against the onrushing Persian troops.
Bonus Features
Free spins
Buy a pass into the bonus round
Multipliers
Popularity
300 Shields is a perfect slot for any war or history fanatics, looking for a fresh adventure.
Volatility & RTP
High volatility
RTP - 95.39%
We recommend playing the 300 Shields slot at reputable casinos like NetBet Casino and Casumo Casino with the jackpot prize set at 30,000x the bet amount.
What are progressive jackpot slots?
Progressive jackpot slots are multiple machines (online or offline) linked together over a network. Each coin deposited into any of the machines boosts the jackpot amount for all machines. This means that jackpots get much higher, much faster than for a single video slot.
The jackpot grows the more the slot is played using real money. Anytime the slot is played, a portion of your wager goes into the pot, and the jackpot grows.
Once the ultimate prize has been won, the jackpot resets itself to the seed amount before the cycle repeats itself.
The biggest progressive jackpots
Casinos have paid out unbelievable amounts to some lucky players over the years, but here are some of the hottest value slots right now.
Progressive jackpot slot | Value of jackpot win (Online Casino) |
Mega Moolah | 1,995x (LeoVegas) |
Mega Fortune | 2,162x (Buzz Casino) |
The Finer Reels of Life WowPot! | 8,100x (32 Red) |
Temple Tumble 2 | 10,045x (Duelz) |
Age of the Gods | 50,000x (bet365) |
Types of progressive jackpot slots
As mentioned earlier in the article, there are several types of progressive slots worth knowing about. Here’s the complete list:
Single-game progressive jackpot slots
This refers to a slot game with a fixed maximum payout rather than a progressive slot. The jackpot applies only to that game, with every spin contributing to the prize pool until it’s won and then resets.
Local progressive jackpot slots
A local progressive slot is linked to a group of slots sharing the same physical location, meaning that jackpots generally grow slower than other progressive jackpot types.
Wide area progressive jackpot slots
Wide area progressive jackpot slots, also known as ‘Network Progressive Slots’, are for a range of casinos or gaming providers, and the jackpot value increases faster as it’s based on any spin across that set collection of games.
Random progressive jackpot slots
Regardless of the symbols which have landed on the grid, this is a type of slot where the jackpot can be won at any time, completely at random.
Linked progressive jackpot slots
In a linked progressive jackpot, multiple slot machines (either from the same or across different casinos) are connected to a shared jackpot. Each time a player places a wager, a portion is contributed to a common jackpot, like for a single-game progressive jackpot. The difference is that the contributing portions for the jackpot come from a wider selection of games, meaning that the prize funds can reach mouth-watering figures.
Pros and cons of playing progressive jackpot slots
Progressive jackpot slots can offer large potential payouts, which is why they continue to grow in popularity across online casinos. However, it’s important to weigh up the pros and cons before playing, as these games often come with higher wagering requirements, and the odds of winning the top prize are extremely low.
Things we like
Chance to win life-changing money
Adds a layer of excitement to regular slots
Keeps gameplay engaging with an extra sense of anticipation
Multi-level jackpots available
Things to consider
Jackpot wins are rare
Minimum bet required to trigger the jackpot may be higher
Most popular progressive jackpot slot game providers
The online casino progressive jackpots industry boasts plenty of software providers. Players are treated to a host of experienced developers who have brought us thousands of games over the years. Let’s take a look at some of the best.
-
Games Global
Formerly known as Microgaming, the legacy lives on through its iconic slots and new portfolio. The Mega Moolah series, widely regarded as its best line, has awarded life-changing progressive jackpots to over 70 players worldwide since its launch in 2006.
-
NetEnt
Developers of some of the industry’s best progressive jackpot slots. When you think of slot machines, Starburst will be one of the first you think of. A true fan favourite for its simple functionality and low volatility, NetEnt hit the jackpot with this classic.
-
Playtech
Playtech boasts an impressive array of slots, having been adding to its UK library since 1999. Their most well-known game is Buffalo Blitz. Despite being visually simple, the game is popular for its free spins and great payouts.
-
Play N’ Go
Joining the industry in the 1990s, Play’N Go became the first to introduce mobile-friendly casino games in 2007. Their stellar collection includes the Book of Dead series, which stands out for its exciting gameplay.
-
Pragmatic Play
Famous in the iGaming world for its diverse collection of slots. Pragmatic Play is the creator of a whole host of classic titles, including the classic Big Bass Bonanza series. The fisherman-themed slot has become a staple of online casinos since 2020.
-
Barcrest
Now owned by SG Gaming (Light & Wonder), Barcrest has been in the gaming industry since 1968. Barcrest is behind the Rainbow Riches series which is impossible to miss in any in-person or online casino.
Top tips to get the most out of progressive jackpot slots
Playing a progressive jackpot online should be approached just like any other slot game. It’s easy to get caught up in the buzz of a growing jackpot and future big wins, but it’s important to stay grounded. We recommend playing for entertainment rather than solely to win. Slots, even with progressive jackpots, use random number generators, meaning that results are completely unpredictable. The main goal is to have fun, and these tips are here to help you do just that.
Understand the rules
Every slot is obliged to have a rule book so players can understand how the game works. To get the best experience out of any slot, familiarise yourself with the rules before spinning.
Play at licensed casinos
To ensure a safe and secure experience, always check that the casino has a valid license from a regulated authority. This information should be clearly displayed on the casino’s website.
Look out for bonuses and tournaments
When you look through the different casinos for the slot you want to play, check to see if any are offering a bonus that can boost your chances of winning. This can range from welcome bonuses, free spins, no deposit bonuses, and more.
Control your betting and bankroll
All operators now offer options to temporarily or permanently suspend accounts if there are addiction-related concerns. Additionally, players can set budget limits that automatically stop play if they exceed time or loss thresholds.
Look for higher RTP and volatility
Theoretically, players have the best chance of winning when a slot has a higher RTP, as this reflects the long-term return based on total wagers. However, volatility is just as important. It determines how often and how much a game is likely to pay out. Slots are typically classified as ‘Low’, ‘Medium’ or ‘High’ volatility, with this information publicly available to help players choose the right game. Progressive jackpot slots typically tend to be high volatility with lower RTPs, as a portion of each bet contributes to the ever-growing jackpot.
The Biggest Progressive Jackpot Payouts
There have been a host of lucky winners over the years, but these are the biggest progressive jackpot payouts for UK players:
Mega Moolah (Betway Casino) - £13,213,838
History was made in 2015 when Jon Heywood became not only the biggest British winner but also the biggest global winner, entering the Guinness World Records.
Jackpot Giant (Betfred) - £6,420,812
One player had a life-changing moment in 2014 when they hit the jackpot on the game set on a volcanic island.
King Kong Cash Go Bananas Jackpot King (Paddy Power) - £5,700,000
This Blueprint Gaming slot smashed its own record of £4 million to hand one player a dream prize in January 2024.
Tips for responsible gambling
Casinos and slots are not only designed for profit-making purposes but for enjoyment too. They offer a fun experience when played responsibly, without excessive spending. Here are the key steps to take to ensure things don’t get out of control.
Set budgets
Ignore how much other people spend and focus on setting a budget that works for you. Avoid losing more than you can afford.
Take breaks
Progressive slots can be fun, we get it. But taking regular breaks helps you stay in control and keep your gaming experience enjoyable.
Use responsible gambling tools
Time & loss limits help players manage their gaming by restricting both session durations and potential losses. Reality checks provide reminders of how long you’ve been playing, ensuring awareness of time spent.
For those needing a break, self-exclusion allows accounts to be temporarily or permanently blocked while cooling-off periods offer a short-term pause without full account closure. Additionally, support resources are readily available, providing access to various helplines for anyone seeking guidance on responsible gaming.
Avoid chasing losses
We all want to hit the jackpot and win a life-changing amount of money, but chasing losses is never the answer. It’s important to play for entertainment, not recovery, as trying to win back lost money can lead to even bigger losses. If you find yourself chasing results, consider setting limits or taking a break to stay in control.
Frequently asked questions about progressive jackpot slots
In case you have more questions regarding progressive jackpot slots, here are some of the most common FAQs.
What are the odds of hitting a progressive jackpot?
Hitting the progressive slot jackpot ranges from one in 50 million to approximately one in 600 million.
Are progressive jackpots rigged?
Every outcome is determined by an independently checked random number generator to prevent progressive slots from being rigged.
What’s the difference between video slots and progressive jackpots?
Video slots are typically story-driven games with fixed jackpots, where the maximum prize is predetermined. In contrast, progressive slots are often linked across multiple machines, with jackpots that grow as players wager, scaling based on the amount bet until a winner claims the prize.
Which progressive jackpots are new?
Mega Moolah recently added the Mega Moolah Goddess to their extensive catalogue, the slot is Egyptian-themed. Next up is Age of the Gods: Titans, another joining a popular series from Playtech. Finally, Wheel of Wishes is an Arabian-themed slot linked to the WowPot! Network featuring substantial prize potentials.
How do you win a progressive jackpot?
Winning a progressive jackpot ultimately comes down to luck, as players must hit a specific combination of symbols or numbers to claim the prize.
/fit-in/176x176/1665646352/james-hall-casinotopsonline.png)
James Hall
Contributor & Games Expert
Fact-checked by Julia Attard
Senior Author & Online Casino Expert