Online slots offer plenty of thrills and excitement but the dream of scoring a life-changing win is the real reason why they are so popular among players. Slots, especially those from the progressive variety, give people the opportunity to fulfill this dream. Progressive slots offer six and seven-figure jackpots that grow in increments each time someone plays them.
These games derive their name from the fact a small percentage of each bet goes toward the top prize. Rather than being fixed, the jackpot continues to swell on and on until someone wins it. Then it resets to a predetermined amount, called a seed, and the whole process starts afresh.
Progressive slots have the potential to turn regular people into multi-millionaires and have indeed done so on multiple occasions over the years. SuperCasinoSites dedicates this article to these millionaire-makers, giving you a glance at the jackpot types, the winning criteria, and some of the progressive slot releases that drop the largest wins.
Not All Progressive Jackpots Are Created Equal
1Jackpot Size and Hit Frequency
A jackpot’s size and hit frequency usually depend on what type of progressive slot you play. Progressive games come equipped with a jackpot meter that shows players the current jackpot amount at any given moment. Some online slots have three or four jackpot meters on display because they yield multi-tier prizes.
Respectively, the hit frequency is based on the prize size. Smaller prizes drop more frequently, while massive ones take months to hit. Below, we describe the three main types of progressive jackpots you will come by when playing the slots at real-money online casinos.
2Standalone Progressive Jackpots
As the name itself suggests, the jackpots of standalone progressives accumulate from a single slot. A nominal portion of each wager players place on the game goes toward the pot. Once the jackpot lands, the casino resets it to its base value and it starts building again. Standalone progressives yield significantly smaller prizes than linked (local) and wide-area jackpot games.
3Linked Progressives Jackpots
Here we have several slots linking to a progressive jackpot network at a single casino. The jackpot builds up across all games that are part of the link. Such progressive prizes are also known as local progressive jackpots. The pots here are larger than those awarded in standalone progressives, although not as large as the prizes in wide-area jackpot games.
4Wide-Area Progressive Jackpots
In this case, we have a jackpot network that links a progressive jackpot across multiple online casinos that use the same software. One good example is Mega Moolah, a series of online slots which are all part of Microgaming’s jackpot network of the same name. Wide-area progressives are where the truly life-changing jackpots drop. Furthermore, such games reset to six-figure or seven-figure seed amounts, which gives people an incentive to continue playing after somebody has won the pot. The software studios usually supply the seed amounts.
Jackpot Hit Frequency and Winning Criteria
The hit frequency and winning criteria vary across the board, depending on which progressive slot you play. Smaller jackpots tend to drop more often than those that reach the six- or seven-digit mark. One good example comes from the Microgaming studio whose progressive slots are linked to a four-tiered jackpot network that awards mini, minor, major, and mega prizes.
According to the studio’s official website, the network has so far awarded over 18.2 million individual prizes that exceed €1.2 billion in total. Out of those, the studio has recorded 14.2 million and 3.9 million individual wins of mini and minor jackpots, whereas major jackpots have been won only 4,606 individual times. The mega jackpot has produced the smallest number of individual wins.
Microgaming’s Jackpot Network Win Frequency | |||
---|---|---|---|
5.4 jackpots awarded each minute | 326 jackpots awarded each hour | 7,824 jackpots awarded each day | |
Individual Jackpot Prizes Awarded by Microgaming’s Progressive Network | |||
Mini Jackpots | Minor Jackpots | Major Jackpots | Mega Jackpots |
Over 14.2 million | Over 3.9 million | 4,606 | 11,537 |
This makes sense considering the average win for the major jackpots is around $31,000, while that for the mini pot is usually a three-digit sum. Some online casinos also feature games with boiling-point jackpots where the progressive prize is won by the player who brings it to a predetermined amount with their bet. Such games also go by the name “Must Win By” progressives.
Winning Criteria
1 Winning Criteria #1 - Betting the Maximum on Each Spin
As for the winning criteria, these differ vastly between progressive slots. Some games require players to wager the maximum amount allowed per spin to qualify for winning. In others, betting the maximum is not a requirement, but the odds of winning the jackpots increase proportionately to your bet size. In other words, the larger your wager, the better your chances of scooping the pot.
2Winning Criteria #2 - Aligning Special Symbols on the Reels
Some progressive jackpots are symbol-driven in the sense that players must land a combination of rare symbols to collect the pot or trigger the bonus jackpot game. Such is the case in Playtech’s famed Jackpot Giant slot where five wild icons must appear simultaneously on the first payline to award the biggest prize.
3Winning Criteria #3 - The Jackpot Can Drop Randomly Even on Losing Spins
Let’s use another example from the Playtech progressive suite. The slots from the studio’s Age of the Gods series are linked to a four-level jackpot system, with each of the four progressive pots landing at random. Players do not need to form a particular symbol combination to trigger a progressive prize. They can win a jackpot even on spins that result in no wins within the main game. Furthermore, one’s bet size is irrelevant although your chances decrease if you bet small.
Things to Keep in Mind before Playing Progressive Slots
Things You Need to Know
Delaying Play Does Not Improve Your Odds of Landing the Jackpot
Several things bear consideration before you log into your online casino account and start spinning the reels fiercely in hopes of becoming a millionaire. When on the hunt for huge progressive wins, some people wait out until the jackpot reaches a certain level. Conversely, they would avoid slots that have recently dropped their jackpots, reasoning that the pot is unlikely to land again so soon.
The underlying reality is the odds of winning the progressive prize remain the same on each spin regardless of how fat the jackpot has gotten. After all, a slot machine has no way of knowing when a player has won and how much. The only exceptions to this rule are the Thinggames that yield mystery jackpots.
View more...To give you some context, let’s assume you play a three-reel progressive machine with a €1 bet per spin and an average return percentage of 93%. The jackpot starts seeding at €5,000. Around 88% of this 93% theoretical return results from smaller wins in the base game whereas the remaining 5% comes from the jackpot.
Therefore, the machine will return €88,000 in smaller prizes out of every €100,000 wagered and €5,000 from the progressive jackpot, for a total of €93,000. However, if a player waits out until the jackpot builds to €9,000, this essentially means they are playing a slot with a different theoretical return. In this instance, they will get back €88,000 from smaller wins for every €100,000 wagered and €9,000 from the jackpot, for overall long-term returns of €97,000.
Average return percentages increase proportionately to the growing jackpot but the odds of winning the progressive prizes stay the same.
One such person essentially plays a game with a higher average payback percentage. However, a higher payback percentage does not mean the jackpot hits more frequently. Suppose the machine is programmed to drop its jackpot once every 20,000 spins on average. If so, the player’s chances of collecting the pot on the next round would be 1 in 20,000.
The odds would remain 1 in 20,000 regardless of whether the jackpot has reached €9,000, €50,000, or €100,000. It is irrelevant whether a player has collected the pot on the last spin or whether the machine has gone through 100,000 spins since it has last dropped its progressive prize. If the chances of collecting the pot are 1 in 20,000 on the first spin, they will remain 1 in 20,000 on the next one.
The way the slot’s Random Number Generator (RNG) is programmed remains the same. The RNG continues to spew random numbers no matter what figure the jackpot meter currently shows. The bottom line is you boost your overall long-term return but do not improve your odds of landing the jackpot by delaying play.
View more...Progressive Slots with the Largest Jackpot Wins
Your hands are probably already itching to set the reels in motion and try to win yourself a life-changing jackpot. Have a look at the games that have yielded the highest progressive prizes thus far so that you know what to play the next time when you visit your favorite online casino.





Microgaming’s Mega Moolah
Mega Moolah Jackpot Slot Summary | |
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Release Date | November 2006 |
Payline Number | 25 adjustable paylines |
Theoretical Return | 88.12% |
Minimum Bet | €0.25 |
Volatility | Low to medium |
Jackpot Tiers | Mini, Minor, Major, Mega |
Seed Amount | €1 million (for the Mega jackpot) |
Average Time between Wins | 8 weeks (for the Mega jackpot) |
Recorded Wins | 72 (for the Mega jackpot) |
Mobile Compatible | Yes |
Winning Criteria | Randomly triggered jackpot bonus game |
Being the developer to launch the first-ever online casino, Microgaming knows what it takes to deliver a breath-taking gaming experience. The Isle of Man-based software studio runs the world’s biggest online jackpot network and has so far awarded more than €1.3 billion in cumulative prizes.
In 1998, the studio released Cash Splash, the first wide-area progressive game in the online gambling industry. Mega Moolah, Microgaming’s most iconic slot release to date, came in 2006 and changed the face of progressive jackpots for good. Several years later, the game produced the first mobile slot millionaire in history but it did not end there.
In 2015, Mega Moolah dropped a world-record pot of €17.8 million ($20 million) and made it to the Guinness Book of World Records for the largest ever jackpot win in an online slot. The lucky winner was Cardiff resident Jonathon Heywood, who spun his way to the life-changing prize in Betway Casino. Three years later, Mega Moolah broke its own record and made a lucky Android player €18.9 million richer.
Microgaming continues to expand its Mega Moolah jackpot network with new titles. In 2020, the network welcomed a new generation of progressives in the face of Atlantean Treasures, Fortunium Gold, Juicy Joker, and Absolootely Mad. As for the classic Mega Moolah slot that started it all, it plays on five reels with 25 paylines and boasts a quirky safari theme.
Slots from Microgaming’s Mega Moolah Jackpot Network:
- Mega Moolah (released in November 2006)
- Mega Moolah: 5 Reel Drive (released in May 2009)
- Mega Moolah: Summertime (released in May 2009)
- Mega Moolah: Goddess (released in August 2009)
- Mega Moolah: Atlantean Treasures (released in February 2020)
- Mega Moolah: Absolootely Mad (released in May 2020)
- Mega Moolah: Fortunium Gold (released in September 2020)
- Mega Moolah: Juicy Joker (released in February 2021)
- Mega Moolah: Immortal Romance (pending release)
Playable from just €0.25 per spin, Mega Moolah features four progressive pots that can be won by unlocking the random jackpot bonus game. The largest of the four is the Mega Jackpot which starts seeding at a whopping €1 million.
Microgaming itself provides the seed amount, ensuring the jackpot is always appetizing even if it has just landed.
Slots from Microgaming’s New WowPot Jackpot Network:
- Wheel of Wishes
- Book of Atem
- Sisters of Oz
- African Legends
- Queen of Alexandria
- Sherlock & Moriarty
Key Facts about the WowPot Jackpot Network:
- Overall prizes awarded so far – €55.9 million
- Highest awarded jackpot at the moment – €17.5 million
- Overall number of individual jackpot wins – 1,313,238
- Seed amounts for the multi-tier network – €10 (Mini), €100 (Minor), €50,000 (Major), €2,000,000 (WowPot Jackpot)
NetEnt’s Mega Fortune
Mega Fortune Jackpot Slot Summary | |
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Release Date | July 2014 |
Payline Number | 25 fixed paylines |
Theoretical Return | 96.60% |
Minimum Bet | €0.25 |
Volatility | Low |
Jackpot Tiers | Rapid, Major, Mega |
Seed Amount | €250,000 (for the Mega jackpot) |
Average Time between Wins | 11 weeks (for the Mega jackpot) |
Recorded Wins | 56 |
Mobile Compatible | Yes |
Winning Criteria | Trigger jackpot bonus game by landing three or more wheel symbols on successive reels from left to right |
Mega Fortune by the Swedish software studio NetEnt is one of the very few online slots that can match Mega Moolah when it comes to winning potential. Another record-breaker, the game paid out a whopping €17.8 million back in 2013. The lucky player was a Finn from Helsinki who scored the massive win at the Åland-based online casino Paf. However, the winner preferred to remain anonymous.
As befits a progressive jackpot game, Mega Fortune is oozing with sophistication to remind spinners what kind of fortune they have the chance to win. The slot plays on a 5×3 reel-grid with 25 fixed paylines. Players can form winning combinations with theme-related symbols like champagne bottles, limousines, and diamond-studded wristwatches.
The multi-tiered progressive jackpot is another thing this NetEnt creation has in common with Mega Moolah. Here three jackpots are waiting to be won – Rapid, Major, and Mega. Each one starts seeding at a different amount, with 1% of each wager going toward the Rapid and Major pots and 5.39% per bet contributing to the Mega jackpot. Players must enter the jackpot bonus wheel game for the chance to win one of the three pots.
You need three bonus wheel symbols to appear in succession on adjacent reels to trigger the bonus round. Once you are in, you must spin the wheels and progress to the innermost wheel, which awards either a coin prize or one of the progressive jackpots. Another great thing about Mega Fortune is that you can trigger the bonus wheel game even during free spins. As for the progressive jackpot, the odds of winning it correlate positively with its size and the amount you wager.
Other Must-Try Progressive Releases by NetEnt:
- Arabian Nights
- Divine Fortune
- Hall of Gods
- Mega Fortune Dreams
- Super Lucky Frog
Playtech’s Age of the Gods
Age of the Gods Jackpot Slot Summary | |
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Release Date | July 2016 |
Payline Number | 20 paylines |
Theoretical Return | 94.03% |
Minimum Bet | €0.20 |
Volatility | Medium |
Jackpot Tiers | Ultimate Power, Super Power, Extra Power, Power |
Seed Amount | €100,000 |
Average Time between Wins | 6 weeks |
Recorded Wins | 86 |
Mobile Compatible | Yes |
Winning Criteria | Bonus jackpot game triggers randomly |
Playtech is another renowned software studio running a jackpot network that is impressive in sheer size, to say the least. Seasoned reel spinners probably remember the studio’s range of Marvel slots. These were a huge hit among online players and rightfully so, considering the massive progressive prizes they used to drop.
Playtech, unfortunately, had no other option but to pull out its superhero-themed creations from online casinos in March 2017. Disney purchased the Marvel franchise back in 2009 and refused to renew Playtech’s licensing agreement which expired in 2017. All was not lost for fans of the progressive network, though.
The software studio simply replaced its Marvel games with the slots from the mythology-themed Age of the Gods series. The new slots are equally impressive in terms of graphics and gameplay. At the moment of writing, the network comprises all of the following progressive releases:
- Age of the Gods
- Fate Sisters
- Goddess of Wisdom
- Furious 4
- King of Olympus
- Prince of Olympus
- King of Asgard
- Glorious Griffin
- Book of Dwarves
- Epic Troy
- Ways of Thunder
- Apollo Power
All of them link to the same network that comprises four jackpot levels – Ultimate Power, Super Power, Extra Power, and Power. Players can trigger the bonus jackpot game during any spin within the base game even if it is a losing one. Then twenty golden coins will appear on the screen, corresponding to the four progressive jackpots. The player flips the coins over and must reveal three identical ones to bag the corresponding progressive jackpot.
Other Must-Try Progressive Releases by Playtech:
- Jackpot Giant
- Beach Life
- Gold Rally
- Frankie Dettori’s Magic Seven Jackpot
- Superman II
Yggdrasil’s Joker Millions
Joker Millions Jackpot Slot Summary | |
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Release Date | April 2015 |
Payline Number | 25 fixed paylines |
Theoretical Return | 94.30% |
Minimum Bet | €0.25 |
Volatility | Medium to high |
Jackpot Tiers | Single-tier jackpot |
Seed Amount | €100,000 |
Average Time between Wins | 20 weeks |
Recorded Wins | 15 |
Mobile Compatibility | Yes |
Winning Criteria | Filling the entire reel grid with joker symbols (15 in total) triggers the jackpot |
Although not as experienced as Microgaming, NetEnt, and Playtech, the Swedish software supplier Yggdrasil has already managed to capture the hearts of reel spinners worldwide with the slick graphics and amazing sound effects of its slots. Joker Millions is a perfect example that showcases the know-how of the studio’s game designers.
The slot plays on 25 paylines and links to a progressive jackpot that builds to €2.8 million on average. Linked to the same pool as Empire Fortune, the Joker Millions pot drops approximately once every twenty weeks, with the biggest win recorded so far standing at €7.8 million. As appetizing as the progressive prize is, Joker Millions does have other merits as well, including a freeze-and-respin feature with column multipliers. Individual jokers can produce mystery wins of up to 1,000 coins.
The player must collect all fifteen jokers on the same spin to win the progressive pot. Do not get disheartened if you fail to pocket the jackpot – the base game offers a top prize that reaches €50,000! The Yggdrasil developers have also created several top-notch local progressives like Holmes and the Stolen Stones, Jackpot Express, Ozwin’s Jackpots, and Jackpot Raiders.
Other Must-Try Progressive Releases by Yggdrasil:
- Jackpot Empire
- Holmes and the Stolen Stones
- Jackpot Express
- Jackpot Raiders
- Ozwin’s Jackpots
Microgaming’s Major Millions
Major Millions Jackpot Slot Summary | |
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Release Date | 2005 |
Payline Number | 15 paylines |
Theoretical Return | 89.42% |
Minimum Bet | $3 |
Volatility | Low |
Jackpot Tiers | Single-tier jackpot |
Seed Amount | €250,000 |
Average Time between Wins | 7 weeks |
Recorded Wins | 82 |
Mobile Compatibility | Yes |
Winning Criteria | Five wild symbols on payline number 15, with a coin covering each line |
Major Millions is another offering by industry behemoth Microgaming and is one of the first releases linked to the studio’s progressive network. The military-themed slot launched in 2005 but continues to pay out huge prizes to this day. The game has transformed several players into millionaires in recent years.
In 2020 alone, this quirky slot produced three seven-figure progressive prize drops – €1.6 million in March, €1.2 million in June, and another €1.6 million in July. Despite being released over fifteen years ago, this game refuses to age. One of Microgaming’s most legendary creations, Major Millions has stood the test of time and continues to attract keen slot spinners with its massive winning potential.
First released as a classic three-reel slot, the game is also available for play on five reels with 15 paylines. Apart from the regular payers, it features a scatter symbol and a wild that holds the key to the progressive prize.
Winning the pot is a bit tricky, however. You need to land five wilds with the Major Millions logo simultaneously on payline number 15. Respectively, you must wager 15 coins per spin to qualify for the jackpot. Betting starts at $3 per spin, with 4.50% of each wager going toward the accumulating pot.