Best Progressive Jackpot Slot Sites in the UK for 2021

Online jackpot slots are very popular among UK players as they offer the opportunity of landing a massive win. We have listed the most lucrative and exciting progressive slot games – check them out!

Last Updated on 01/09/2021 by George Mizzi

How Do Progressive Jackpot Slots Work?

In progressive slots, the progressive slot jackpots can be won after any spin, completely at random. And the longer these jackpots go unclaimed, the larger they grow. That’s why you can sometimes see absolutely massive figures in online jackpot slots, reaching well into the eight and even nine digits. The mechanism that enables this to happen involves each stake made on the respective progressive slot to contribute to the total pot. Or to be more precise, a small amount from each stake goes towards the pot. And then once someone wins the progressive, the jackpot will usually automatically reset to a certain amount, which is known as “seeding”. But more importantly, the value that some of the largest jackpots “seed” to can be as high as millions of pounds. And then the whole process repeats again, until the next time that some lucky player hits the jackpot.

Three Major Types of Progressive Slots

In the iGaming world, we distinguish between three major types of progressive jackpots. This is based on the jackpot size, which in turn depends on how many different slots are contributing to the pot.

Standalone progressive slots

Standalone progressive slots usually have the smallest progressive jackpot sizes, due to the fact that they only have a single slot game contributing to the total size of the jackpot. So obviously, there are less players and less stakes, than if it were a network of slot games (see below). The good thing about standalone progressives, though, is that even though the potential win is smaller compared to local and networked progressives, your chances of winning it are higher. Again, this has to do with the smaller number of players contributing to the amount. Less players means higher likelihood of you claiming the pot.

Local progressive slots

Local progressive slots are network of several slot games that are linked to the same progressive jackpot. Only these slot games are usually always based in the same casino. Alternatively, they may be in different casinos, as well, only the “binding” factor in this case is the casino owner or operator. As you may know, the same operator may have more than just one casino. Hence, this already makes the pot substantially larger.

Networked progressive slot

Networked progressive slot games are where the total amount of the jackpot can grow to unseen amounts. And that is because, as the name would suggest, there’s a whole network of different slot games all contributing to the same pot. This network can span across a number of different casinos and can even include slot games from different providers. So you can picture the number of different players all competing for that one lucky spin. But with such a massive progressive jackpot towering above as the main prize, the chances of winning it become quite slim.

Standalone progressive slots

 

Standalone progressive slots usually have the smallest progressive jackpot sizes, due to the fact that they only have a single slot game contributing to the total size of the jackpot. So obviously, there are less players and less stakes, than if it were a network of slot games (see below). The good thing about standalone progressives, though, is that even though the potential win is smaller compared to local and networked progressives, your chances of winning it are higher. Again, this has to do with the smaller number of players contributing to the amount. Less players means higher likelihood of you claiming the pot.

Local progressive slots

 

Local progressive slots are network of several slot games that are linked to the same progressive jackpot. Only these slot games are usually always based in the same casino. Alternatively, they may be in different casinos, as well, only the “binding” factor in this case is the casino owner or operator. As you may know, the same operator may have more than just one casino. Hence, this already makes the pot substantially larger.

Networked progressive slot

 

Networked progressive slot games are where the total amount of the jackpot can grow to unseen amounts. And that is because, as the name would suggest, there’s a whole network of different slot games all contributing to the same pot. This network can span across a number of different casinos and can even include slot games from different providers. So you can picture the number of different players all competing for that one lucky spin. But with such a massive progressive jackpot towering above as the main prize, the chances of winning it become quite slim.

How Much Can You Win? Biggest Online Jackpot Slots Winners

Progressive jackpot wins can be anything from big to humungous, depending on a number of factors. And the main factor tends to be how long ago the last progressive jackpot win took place. Usually, the longer a jackpot goes unclaimed, the larger it becomes. And seeing as how the sky-high figures tend to attract even more players, the larger a jackpot is – the faster it becomes even bigger. It’s common to see jackpots with numbers that go way up in the millions. Hence, it’s safe to say that all of the bigger progressive jackpot winners pretty much became instant millions by hitting the pot.

 

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For example, the record held at the time of writing is of a massive €18,915,872.81 paid out by Microgaming’s Mega Moolah slot game in September 2018. This title already held the Guinness World record for largest payout from three years previously. And the new win beat that record, which it still holds. The winner, as is usually the case with jackpot slots winners of this magnitude, wished to remain anonymous. But what’s remarkable is that the player was betting €0.75 per spin and had played for less than 50 spins before triggering the progressive.

And if that amount impresses you, know that online progressive slot games never manage to generate the same amounts as their land-based counterparts. Those jackpots can truly reach astronomical heights. Thus, the largest progressive jackpot won (again, at the time of writing) at a land-based casino was $39.7 million by a 25-year old software engineer at IGT’s Megabucks slot machine. And what’s great about progressives, is that after they’ve been triggered they don’t just start from zero again. Most if not all progressive slots reseed to a fixed amount, which in the case of the aforementioned Mega Moolah, for instance, is a whopping £1 million.

Top 3 Biggest Wins on Online Progressive Slots
1 €19 Million Euros won by Anonymos player on Mega Moolah online slot.

 

2 $20,057,734 won by an anonymous Canadian player playing Mega Moolah.

 

3 €17,860,868 hit by anonymous Finnish Player on Mega Fortune Slot game.

Progressive Jackpot – How to Win?

Of course, there’s no precise formula for how to win a progressive jackpot, the same way as there’s no such formula for winning any game of chance. After each spin of the reels, the slot game’s random number generator or RNG produces a set of random numbers. And if those random numbers happen to match those of the algorithm, then you win the jackpot. Yet, despite the randomness factor, there are ways in which you can increase your odds of triggering the progressive.

Play Higher Stakes

There are two possible cases in which playing the maximum stake can give you a chance to win the progressive jackpot. One is if the game is set up in a way that only the maximum stakes are eligible for to trigger the jackpot. And in this case you really don’t have any other choice if playing for the progressive is your main intention. In many other progressive slots, the amount you stake earns you a certain number of “tickets” with which you can compete for the progressive. Thus, the higher the stake, the more tickets you get and the greater your chances of winning the pot.

Playing a Bonus Game

Sometimes you may be able to trigger the progressive jackpot from within the slot game’s own special features or bonus games. If you activate the bonus round by landing a special symbol or combination thereof, you may need to play a mini game. For instance, it could involve picking cards that need to match up or spinning a wheel. And the progressive jackpot could be among the available prizes.

Hitting Symbol Combinations

Depending on the rules of the specific slot game you’re playing, landing a certain combination of symbols in a certain way on the grid may trigger the progressive jackpot. For example, you may need to land 5 bonus symbols on a specific payline in order to make this happen.

Random Number Generators

This isn’t so much a winning strategy as it is a tip to better understand the mechanism of progressive jackpot slots. All video slot games (meaning all slots that you play online) have a random number generator (RNG), which is there to ensure fair gameplay. It’s important to keep the random factor in mind, so you don’t start speculating that if the jackpot hasn’t been triggered in a long time then it’s about to be hit any minute now.

Must-drop Jackpots

The above may not entirely be true for must-drop jackpots, though. These are specific types of slots that have their jackpots programmed to drop by a fixed deadline. And usually as that deadline draws close, these jackpots tend to increase significantly in size.

Winning Jackpot at Random

This one is rather self-explanatory. The jackpot is awarded randomly, which can happen after any given spin, and this is not tied to landing combinations of symbols or playing bonus games. However, the concept of playing with higher stakes may apply.

Play Higher Stakes

 

There are two possible cases in which playing the maximum stake can give you a chance to win the progressive jackpot. One is if the game is set up in a way that only the maximum stakes are eligible for to trigger the jackpot. And in this case you really don’t have any other choice if playing for the progressive is your main intention. In many other progressive slots, the amount you stake earns you a certain number of “tickets” with which you can compete for the progressive. Thus, the higher the stake, the more tickets you get and the greater your chances of winning the pot.

Playing a Bonus Game

 

Sometimes you may be able to trigger the progressive jackpot from within the slot game’s own special features or bonus games. If you activate the bonus round by landing a special symbol or combination thereof, you may need to play a mini game. For instance, it could involve picking cards that need to match up or spinning a wheel. And the progressive jackpot could be among the available prizes.

Hitting Symbol Combinations

 

Depending on the rules of the specific slot game you’re playing, landing a certain combination of symbols in a certain way on the grid may trigger the progressive jackpot. For example, you may need to land 5 bonus symbols on a specific payline in order to make this happen.

Random Number Generators

 

This isn’t so much a winning strategy as it is a tip to better understand the mechanism of progressive jackpot slots. All video slot games (meaning all slots that you play online) have a random number generator (RNG), which is there to ensure fair gameplay. It’s important to keep the random factor in mind, so you don’t start speculating that if the jackpot hasn’t been triggered in a long time then it’s about to be hit any minute now.

Must-drop Jackpots

 

The above may not entirely be true for must-drop jackpots, though. These are specific types of slots that have their jackpots programmed to drop by a fixed deadline. And usually as that deadline draws close, these jackpots tend to increase significantly in size.

Winning Jackpot at Random

 

This one is rather self-explanatory. The jackpot is awarded randomly, which can happen after any given spin, and this is not tied to landing combinations of symbols or playing bonus games. However, the concept of playing with higher stakes may apply.

Most Popular Progressive Jackpot Slots

There’s a handful of most popular online jackpot slots that people keep coming back to. And these are usually more widely accessible progressive slot games, which is partly what ensures that their jackpots can grow to be very large. Furthermore, if any of these progressive slots are present at a casino – they’ll usually be at the forefront, so you won’t miss them.

Mega Moolah

We already gave you the pompous introduction of the safari-themed Mega Moolah, but let’s just say a few words about the slot itself, too. This is one of Microgaming’s oldest titles and you can tell from the rather basic graphics quality.

However, gameplay sucks you right in thanks to its fast pace and impressive selection of special features. For instance, there’s a Wild symbol that also multiplies any wins that it partakes in. And on top of that, there’s a free spins bonus round that can award you 15 free spins with a 3x multiplier. The bonus round for the progressive jackpot, however, triggers completely at random. And when it does, you get to spin a wheel and potentially win one of the four progressives.

Mega Fortune

Mega Fortune is an online slot game developed by software provider Netent. This is the game responsible for the second largest online progressive win at the moment. And like the previous title, Mega Fortune isn’t particularly new either. Hence, the visuals are not at all complicated or pretentious, which is not what we can say about the theme.

The symbols and backdrop are all about luxury in this 2008 offering, and the setup is quite lush, too. There are scatter symbols with lucrative cash prizes, as well as up to 10 free spins with a 5x multiplier and a retrigger option on offer. But the main attraction is the bonus wheel, which appears after landing 3 special symbols on consecutive reels and allows the chance to hit one of three jackpots.

Mercy of the Gods

Mercy of the Gods is another title by Netent that also gets plenty of attention from players due to its often eye-watering progressive jackpot. However, the game itself has plenty of winning potential even without the main prize.

The Egyptian theme takes you to ancient times and sets the mood for adventure. A typical video slot layout hides a bunch of special features, from re-spins and free spins to Netent’s custom Wild Reels feature. And then by landing three or more bonus symbols, you enter the fairly complex Gift of Wealth Jackpot game, where you can win more cash prizes and one of two jackpots (including the progressive).

 

Age of the Gods

For a slightly more modern touch to the visuals, Age of the Gods by software developer Playtech may prove a better choice. Here, the theme is centered on Ancient Greece and its pantheon. And quite frankly, in terms of its special features, it may even surpass the previous listings we have here.

Namely, Age of the Gods boasts not one, but 4 different free spins modes for a thrilling bonus round. And in addition to those, players can benefit from extra Wilds and multipliers throughout gameplay as well. The main bonus round, however, can be triggered randomly after any spin and also gives you the chance to win one of four different jackpots.

Jackpot Giant

jackpot giant slot main image

jackpot giant slot main image

Also brought to you by software manufacturer Playtech, Jackpot Giant boasts ultra-modern, sharp 3D visuals and a fun theme, which on top of everything else also has an average payout of £4.5 million from the jackpot. It is a pricey offering, though, with the minimum stakes starting out at 50p per spin. And in order to qualify for the progressive, you need to play at the maximum bet of £4 per spin. There’s a Wild symbol ready to substitute for any of the regular ones, and a Scatter that can provide cash prizes of up to 500 times your stake. There’s a simple pick-me style mini game with very decent winning opportunities. But in order to hit the progressive jackpot, you will need to land 5 Wild symbols on the first payline.

 

Should You Play at a Progressive Jackpot Slots Casino?

Progressive slots wow gamblers with the multiple-digit numbers that keep on growing and you can watch the number increase in real-time on most online casinos. So obviously it’s a tempting treat to go and try your luck with one of these titles. It is always good to start your online slots journey with a great welcome bonus. Feel free to check out our selection of the top 3 ranked sites with their  bonus terms. If in doubt check out our casino bonus section and see if your favourite progressive jackpot game is included. We only list safe and secure sites holding a valid UKGC license.

Top 3 Progressive Slots Casinos for October

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More Progressive Jackpot Slots Casinos to Explore

 

Progressive Slots FAQs

What are progressive slots?

Progressive slots are games that have a jackpot that progressively increases in size until someone triggers and wins it. The jackpot increases as a small portion of each qualifying bet or stake goes into the pot. Usually you can recognize progressive slots at online casinos by the jackpot value displayed right on top of it, shown in real time.

Are the restrictions when playing progressive slot games?

Yes, there are often certain requirements you have to meet in order to be able to win the progressive jackpot. These will vary from platform to platform, as well as from game to game, but very often they will involve playing at the maximum stake and/or landing certain symbol combinations. Other jackpot slots may not have special requirements, though.

How large can a progressive jackpot be?

Basically, the sky is the limit. History has its fair share of absolutely massive jackpot wins, the largest land-based prize being $39.7 million, and the largest online progressive slot win being €18,915,872.81 at the time of writing.

What are the best progressive jackpot slots to play?

Mega Moolah is easily the most popular and cumulatively largest paying progressive slot game. However, there are other potentially very lucrative titles as well. Be sure to check out our list of games to find the one you like the most.

Can I play progressive slots on mobile?

Yes, you can. As with the vast majority of other online slot games, the developers and casinos both strive to make their titles and platforms, respectively, compatible with all devices and operating systems. In fact, the largest progressive jackpot to date was hit on an Android device. Have a look at the best mobile casinos where you can play progressive titles on your mobile device.

How can I increase my chances of winning a progressive jackpot?

For the most part, there is no way of predicting when a progressive jackpot will drop. But there are ways to improve your odds of being the lucky winner, for instance, by playing more and by making larger stakes. Usually, larger stakes give you more “tickets”, which automatically means a higher chance of hitting the jackpot.

 

Author: George Mizzi
Chief Slot Analyst
When it comes to slot games, no one knows them better than our chief slot analyst George Mizzi. George started playing video slots back in 2011, and since then, he became inquisitive about all things slots. He became entrenched in the mechanics of them and quickly became an expert in how slot games work.