Jackpot games, and the networks that hold the money
Mega Moolah, WowPot!, Jackpot King, Dream Drop and the rest, with the seeds they restart at, the share of each stake they take, and the interval in which each level has actually been paid.
Ad disclosure: some casino links are affiliate links; we may earn a commission at no extra cost to you. It never affects the order of our list or what a page says. 18+.
The twelve casinos at the top of our list
Ordered by the regulator we were able to read for each one, not by what any of them pays us. Every card shows the licence and the jackpot networks the catalogue carries, and no card shows a bonus figure: the reason is on how we review.
- 1
888 Casino
Gibraltar Remote Gaming Licence 112 and 113, Virtual Global Digital Services Limited
Jackpots: Jackpot King, Age of the Gods, King Millions, Daily Drop Jackpots
- The only house in our list that runs networks of its own instead of renting them: Millionaire Genie, the Titan pools, the Twilight and Power 8 drops and more besides, across a hundred and sixty-eight games built in house
- It carries Jackpot King, the Age of the Gods pools and King Millions, but neither Mega Moolah nor WowPot!; we read the catalogue on 19 October 2026 and the Games Global wheels are not in it
- Three licensing arrangements sit behind one address: Gibraltar outside Britain, a Gambling Commission account inside it, and a Maltese company for the European market
- 2
All Slots
Alderney AGCC Category 1, Baytree (Alderney) Ltd · Kahnawake 00892
Jackpots: Mega Moolah, WowPot!
- The domain appears in the AGCC register of licensees, read on 22 September 2026
- Games Global library, with the Mega Moolah and WowPot! wheels
- Its entry offer is built around a Mega Moolah title, which is unusual and tells you where the house puts its attention
- 3
Blackjack Ballroom
Malta Gaming Authority · Kahnawake
Jackpots: Mega Moolah, WowPot!
- A table-first address, which matters because the Games Global progressives include table games
- Apricot and Games Global, with eCOGRA on the payouts and Fresh Horizons on the licence
- Malta and Kahnawake, and no Ontario site, so it stays an international address
Visit Blackjack Ballroom18+ · Sponsored link · Terms on the operator's site
- 4
Captain Cooks
Malta Gaming Authority · Kahnawake · AGCO for Ontario, on a separate site
Jackpots: Mega Moolah, WowPot!
- Trading since 1999, with the Apricot and Games Global library
- Tested by eCOGRA, and in the Malta and Kahnawake registers
- One of the Casino Rewards addresses that feed the same Mega Moolah pool
- 5
Casino Classic
Malta Gaming Authority · Kahnawake · AGCO for Ontario, on a separate site
Jackpots: Mega Moolah, WowPot!
- One of the oldest Casino Rewards addresses, trading since 1999
- Apollo Entertainment Ltd is the operator, on the Apricot platform with the Games Global library
- In the Malta and Kahnawake registers, with a separate site for Ontario
Visit Casino Classic18+ · Sponsored link · Terms on the operator's site
- 6
Casino Kingdom
Malta Gaming Authority · Kahnawake
Jackpots: Mega Moolah, WowPot!
- Trading since 2002 under Fresh Horizons, with the Games Global library on Apricot
- A Malta licence and a Kahnawake permit, both read in the public lists
- A Casino Rewards address on the same global pools as its sisters
Visit Casino Kingdom18+ · Sponsored link · Terms on the operator's site
- 7
Cosmo Casino
Malta Gaming Authority · Kahnawake
Jackpots: Mega Moolah, WowPot!
- The newest address of the group, on the familiar Apricot and Games Global pairing
- Licensed in Malta and permitted in Kahnawake, with Fresh Horizons as the operator
- Built around the jackpot wheels rather than around a wide slot catalogue
Visit Cosmo Casino18+ · Sponsored link · Terms on the operator's site
- 8
Euro Palace
Alderney AGCC Category 1, Baytree (Alderney) Ltd · Kahnawake, Baytree Interactive Ltd
Jackpots: Mega Moolah, WowPot!
- The domain is in the AGCC register and in the KGC list of permit holders
- Games Global catalogue with the two jackpot wheels
- Euro-facing by name, and the seeds it shows are the euro thresholds, not conversions
- 9
Gaming Club
Alderney AGCC Category 1, Baytree (Alderney) Ltd · Kahnawake, Baytree Interactive Ltd
Jackpots: Mega Moolah, WowPot!
- Trading since 1994, which makes it one of the oldest addresses in the business
- Both the domain and the permit holder appear in the AGCC and KGC registers
- Games Global catalogue, so the Mega Moolah and WowPot! pools are reachable from the lobby
- 10
Golden Tiger
Malta Gaming Authority · Kahnawake · AGCO for Ontario, on a separate site
Jackpots: Mega Moolah, WowPot!
- Trading since 2000, Apricot and Games Global library, tested by eCOGRA
- In the Malta and Kahnawake registers, with a separate Ontario site
- Euro and dollar accounts, so the seeds you see are the nominal thresholds of your currency
Visit Golden Tiger18+ · Sponsored link · Terms on the operator's site
- 11
Grand Hotel Casino
Malta Gaming Authority · Kahnawake
Jackpots: Mega Moolah, WowPot!
- Sterling accounts only, on the Apricot platform with the Games Global library
- In the Malta register and on the Kahnawake list of permit holders
- One of the Casino Rewards addresses feeding the global Mega Moolah pool
Visit Grand Hotel Casino18+ · Sponsored link · Terms on the operator's site
- 12
Grand Mondial
Malta Gaming Authority · Kahnawake · AGCO for Ontario, on a separate site
Jackpots: Mega Moolah, WowPot!
- On 28 September 2018 it paid €18,915,872.81 on Mega Moolah, from a smartphone, on a €0.75 stake
- The win was paid as a single sum rather than an annuity, which the operator confirmed at the time
- Games Global titles on the Apricot platform, run by Apollo Entertainment Ltd
What this guide is for, and what it refuses to do
A jackpot is the only prize in a casino that does not come out of the game being played: it comes out of a slice taken from every stake placed across a whole "network" of games (a pool shared by a hundred casinos at once, in four currencies), and it sits there growing until somebody triggers it.
That single difference explains almost everything a player needs to know, and almost none of it appears on the pages that list these games, so we have built this guide around the mechanism rather than around the counter, and around figures somebody has actually published rather than the ones that get repeated.
We write about the networks first and the games second, because the network is what holds the money. Mega Moolah, WowPot!, Jackpot King, Dream Drop and the rest each have their own "seeds" (the value a level restarts at after it falls), their own "trigger" (the event that opens the jackpot round), their own share of each stake (the "contribution", which runs from 0.99 to 7.60 per cent) and their own record of how often they have really paid; the game sitting on top is a theme and a "base game" return, and it changes while the pool underneath stays exactly where it was (the same "Mega" sits behind twenty-nine Mega Moolah titles). A reader who has understood the pool has understood every title that feeds it.
The refusals matter as much as the contents. You will find no live counter anywhere on this site, because a figure that is true at eight in the morning is false by lunchtime and nobody can check it afterwards, and you will find no stated probability of hitting a top jackpot, because no major supplier has ever published one.
Every percentage in circulation is either unattributed or arithmetically incompatible with how often the thing has really fallen (one much-quoted figure for a NetEnt level implies a win every 17,361 spins, against an observed interval of fourteen weeks). Where a number is not published, we write that it is not published.
What takes the place of the numbers nobody publishes
In place of a live counter we give three figures that stay true: the "seed", the average of everything that game has actually paid, and the "drought" (the interval since the level last fell), read against its own "average interval" between wins. Those three together say more than any ticker, and they can still be checked a year from now.
They also expose the games that look alive and are not: one Games Global title (King Cashalot, from the first wave of online progressives) carries a "pot" above $2.2 million and has not paid since 2017, which is 45 per cent more than the largest prize it ever gave anybody.
In place of a probability we give the observed frequency, which is a measurement and not an estimate. The "Extra Power" level of the Playtech pool has fallen on average every two hours and thirty-eight minutes; the "Mega" of Mega Moolah about five and a half times a year, the top level of WowPot! about once and a half, and one Playtech pool (Thai Temple) once a decade, which is not a "network" in any useful sense any more.
That spread covers four orders of magnitude (from under three hours to over eleven years), and in our view it is the most useful single thing a reader can be told before deciding which pot to chase.
In place of a bonus figure, every card on this site carries the regulatory frame of the operator and the jackpot networks its catalogue runs.
The reason is half legal and half editorial: in Ontario and in Alberta an affiliate may not advertise a bonus at all (Standard 2.05 of the AGCO, and the AGLC standards of June 2026), so a site built around offers has to write two versions of itself (and most of them quietly write one), and on a site about jackpots the proposition is the pot and not the welcome package.
Where the money has actually been paid
The largest jackpot this trade has ever paid was €38,461,200.95, on Wheel of Wishes, on 20 December 2023, and Games Global confirmed the amount and the date without ever naming the casino.
The only jackpot ratified by Guinness World Records is a different one, and a smaller one (€17,879,645, won by Jon Heywood at Betway on 6 October 2015): Guinness records what somebody applies to have recorded, and nobody applied for the four larger wins that came afterwards. Both of those facts are usually reported wrongly, and the second is reported wrongly even by the sites that copy the first correctly.
Several of the largest Mega Moolah wins were paid by houses that appear on this very page, which is a coincidence of the network and not of our list: the Casino Rewards and "Palace" addresses have carried the Games Global pools for twenty years, and a pool pays where the players are (the Mega Moolah "Mega" is a single global pot, so every one of those houses was feeding the same money).
Grand Mondial paid €18,915,872.81 in September 2018, from an Android phone, on a stake of €0.75 and in fewer than fifty spins. Zodiac paid CA$20,059,287 in January 2019, Jackpot City CA$16,496,347 in April 2020, and Luxury $12,945,668 in March 2019.
One warning belongs beside every table of records, ours included. Those four amounts are in three currencies and span five years, and a Canadian dollar of 2019 is not a euro of 2023 (CA$20 million of January 2019 was worth roughly €13.5 million at the time), so ordered as plain numbers, which is how almost every ranking in this trade orders them, they come out in the wrong sequence altogether.
We give each amount in the currency it was paid in, with its date, and with the plain statement that the figures are not comparable.
The half of the subject that everyone leaves out
Half of the jackpots in an online casino are not progressive at all, and the difference is not one of size. A "fixed" jackpot is a named prize paid as a multiple of the stake out of the game's own payout mathematics: it takes nothing from a shared pool, it never grows, it does not reset, and it does not depend on another player in another country; it is the only jackpot in a casino that is entirely yours to work out.
A "progressive" takes between 0.99 and 7.60 points of "return to player" (the share of stakes a game pays back over time) from the game to feed the pool, depending on the network, and that money leaves the base game whether the wheel ever appears or not.
The consequence is the most important figure on this whole site. On one Mega Moolah title the base game pays 81.63 per cent and the total with the jackpot share is 86.93, so a player who does not win the "Mega" (which is practically everybody) is playing a slot with a house edge above eighteen per cent.
On the same network, with the identical pot in view, the best titles pay 93.42 total on an 88.12 base: nearly seven points of return separate two games chasing the same prize, and that is the number no comparison table in this trade shows!
There is a quieter trap in the games of the first generation. On Treasure Nile the jackpot needs £4.50 a spin and five "King Tut" symbols on the ninth line, and on Fruit Fiesta a stake on all fifteen lines (a maximum of £0.75), so below the "qualifying stake" the jackpot is not unlikely but impossible.
The contribution, meanwhile, is taken from every stake, qualifying or not, which means a player betting under the threshold is paying into a prize that cannot be won under any circumstances. It is the oldest unfairness in the business, and you will still find it running in games anybody can open today.
How we read the sources, and what we do when they disagree
We work in a fixed order of preference: the supplier's own pages and press releases first, then operators holding a licence that obliges them to describe seeds and mechanics correctly (Grosvenor, BetMGM UK, PlayOJO, Playzee, Pink Casino), then the trade press, then the jackpot trackers, and only where nothing better exists, the comparison sites.
Every figure carries the date we read it, and where two good sources disagree we print both and say the matter is open: the seed of the WowPot! "Major" is the clearest case, given as £10,000 by a licensed British operator in 2026 and as €50,000 at the launch in 2020 (£3.4 million is not a conversion of €2 million, so one of the two is simply wrong).
Some of what we found is simply that a thing does not exist. One very large slot supplier has no progressive network behind it at all, despite the lists that say otherwise; a promotion that half the trade files among the progressives (Pragmatic Play's "Drops & Wins") is a fixed prize budget with no seed and no pool, confirmed in the official terms; and two well-known games circulate under names their makers have never used.
We correct each case on the page where it belongs, because a guide that repeats a convenient error is worth less than a shorter guide that does not.
We claim no laboratory. A jackpot's probability cannot be measured from outside, and there is no pretence here of having tested every game described. What you get instead is the registers, the game rules, the licence conditions and the trackers, and record what each of them says and on what date it said it, which in a trade where "verified" usually means "copied" turns out to be the harder of the two jobs!
Questions we are asked about jackpot games
Questions
Why does this site show no live jackpot counter?
Because a live figure cannot be checked after the fact, and because the trackers that publish them do not say where the number comes from or how often it is refreshed. We publish the seed, the average of everything the game has paid, and the interval since the level last fell, which stay true and can be verified later.
What are the odds of winning a progressive jackpot?
No major supplier publishes them. NetEnt, Games Global, Playtech and Relax Gaming publish the return to player and the hit frequency of the base game, which is a different thing. What can be measured is how often each level has actually fallen, and that is what our pages give.
Does a jackpot slot always have a lower return to player?
No. Mega Moolah Megaways pays 86.93 per cent in total and Divine Fortune 96.59, both with a progressive attached. What changes is how much return the supplier moves into the pot and how improbable the top level is.
Why do the cards here show a licence instead of a bonus?
In Ontario and in Alberta an affiliate cannot advertise a bonus at all, and on a site about jackpots the proposition is the pot. The licence and the networks tell a reader more about where to play a jackpot than a welcome figure does.
How often is this guide checked?
Each page carries the date its text was last revised. The figures that come from registers and supplier pages are re-read when a page is revised, and the ones that come from trackers are dated in the table itself.
