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Jackpot Slots
Fixed and progressive jackpots explained, with 246 jackpot slots to play free and RTP and max win for each.
Total slots246
Avg RTP95.9%
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How jackpot slots work
A jackpot is a slot's top prize, and it comes in two forms. We list 246 jackpot slots from 22 studios with a free demo (November 2026), and 61 of them were released in 2026.
Fixed jackpots
A fixed jackpot is a multiple of your stake. If a tier pays 500x and you spin at 20 cent, the prize is €100; at €2 a spin it is €1,000. It never grows with other players' bets, which is why it shows up as a number on the game's info screen.
Progressive jackpots
In a progressive, every bet adds a slice to the pool: the casino decides how much, and all wagers count. When someone wins, the pool drops back to a preset starting amount (Wikipedia). Take 1% of each bet as an example: a 20 cent spin adds 0.2 cent, so a pool of €1 million needs €100 million staked, or 500 million spins of 20 cent. That is why the big ones are fed by thousands of players at once.
Networked and must-hit-by pools
Machines can share one pool so it grows faster; small tiers pay locally and the biggest come from a wider network. In a must-hit-by jackpot, a random target is fixed within a published range and the pool pays on the bet that takes it to that figure or above (Wikipedia).
What the demo can't show
The demo lets you trigger the bonus and see the tiers, but the credits are free, so a demo win is not paid and no real pool grows. The real pool amount only appears in a licensed casino.
Where jackpots came from
Progressive jackpots reached big casinos in 1986 with Megabucks, developed by IGT, and the first progressive jackpot was won on 1 February 1987 for $4,988,842.17 (Wikipedia). The best-known modern system in Britain and Ireland is Blueprint Gaming's Jackpot King, launched in 2016 as a three-tier progressive that can trigger on any spin at any stake, and expanded by Jackpot King Deluxe in 2018 with two pots that must be won before they reach £3,500 and £35,000 (InterGame). By December 2024 Blueprint reported just under £194 million paid across more than 60 titles (CasinoBeats). Blueprint Gaming has 33 of our 246.
Jackpot slots in Ireland
What Irish lobbies show. In our check of casino lobbies in early November 2026, jackpot titles were easy to find:
- William Hill Vegas IE's Top Slots listed a Reely Big Catch Jackpot King game; the library page is Fishin' Frenzy Reely Big Catch, released 27 August 2026.
- The same row had a Megaways Rapid Fire edition of Fishin' Frenzy Even Bigger Fish 3, which is also a jackpot game in our library.
- BetVictor IE's home page had a Fishin' Frenzy Big Catch Jackpot King.
- bet365's popular row and PlayOJO's home strip each had a Playtech Gold Trio jackpot game; ours is Gold Trio Jackpot.
We saw these on one day in early November 2026, so read them as a snapshot of what lobbies show, not a ranking.
A big Irish win. In February 2019 Sean Doyle, a chef from Newcastle, Co Down, won about £4.3 million (€4.86 million) on Paddy Power Games on Blueprint's Mars Attacks, through Jackpot King Deluxe (Irish Times; Irish Post). It is a Northern Irish win, not one from the Republic.
For scale. The National Lottery lists the Lotto jackpot odds at 1 in 8,145,060 and EuroMillions at 1 in 139,838,160 (lottery.ie). Slot jackpot odds depend on the game and pool size, so treat any progressive top prize as a long shot.
How people look. In Google, "jackpot slots" gets about 90 searches a month in Ireland, "slot jackpots" 90 and "progressive jackpot slots" 30 (November 2026). Online play is normal here: ESRI research for the regulator, published 4 November 2026, found 77% of people who gamble did so online (GRAI/ESRI).
The Irish theme. 17 of our 246 jackpot slots are Irish-themed, from Irish Riches Megaways Jackpot King to Leprechauns Gold Streak; see all Irish slots.
Variations of jackpot slots
- Jackpot King (18 games). The multi-tier system above, as in King Kong Cash Even Bigger Bananas Jackpot King (2023).
- Rapid Fire (4). Blueprint's Rapid Fire Jackpots series, like Luck O' The Irish Strike Rapid Fire.
- PowerPlay Jackpot (10). All ten are from Playtech, such as Leprechauns Luck Cash Collect Megaways PowerPlay Jackpot.
- Megapots and Megapays (6). Big Time Gaming games, from Danger High Voltage Megapays (2022) to Monopoly Megapots (April 2026).
- Megajackpots (IGT). Cleopatra Megajackpots and Da Vinci Diamonds Megajackpots carry the Megajackpots name.
- Fixed tiers with Hold and Win. TaDa's Bison Fortune Coins pays up to 3,000x at 97% RTP.
Best-known jackpot slots
- Diamond Mine Megaways Jackpot King
Blueprint Gaming
Blueprint, 2021, 94.5% RTP. - Irish Riches Megaways Jackpot King
Blueprint Gaming
2018, 95.93% RTP and 50,000x in its in-game rules. - Divine Fortune
NetEnt
NetEnt, 2017, medium volatility, 96.59% RTP; Divine Fortune Black reaches 20,000x. - Wolf Gold Ultimate
Pragmatic Play
Pragmatic Play, 2024, up to 5,000x at 96.5%. - Mustang Gold
Pragmatic Play
Pragmatic Play, up to 12,000x. - The Goonies Megaways Quest for Riches
Blueprint Gaming
Blueprint's film-licence jackpot, 10,000x. - Genie Jackpots Combo Frenzy
Blueprint Gaming
Blueprint, March 2026, up to 2,000x. - Leprechaun’s Gold Streak
TaDa Gaming
TaDa, 2026, 97.05% RTP and 3,000x. - Fire Strike 2
Pragmatic Play
Pragmatic Play, 2022, up to 25,000x and medium volatility.
Jackpot slots and volatility
The pool has a price. Diamond Mine Megaways pays back 96.43% and its Jackpot King version 94.5%. On a €20 session of 100 spins at 20 cent, that is about €0.39 more expected loss on the jackpot version (€1.10 against €0.71), in return for a chance at the pool.
The split is clear by studio. Among games with a published RTP, the median is 96.15%, from 89% (Da Vinci Diamonds Megajackpots) to 97.75%. Pragmatic Play's 42 sit at a 96.50% median and TaDa's 8 at 97.00%, while Blueprint's 24 sit at 95.00%, and 11 of the 17 games below 95% are Blueprint's. Across the library, the pooled Jackpot King games sit at lower RTP than the fixed-prize studios.
104 jackpot slots publish a volatility, on the studio's own scale, from low to very high. Expect long dry stretches, and set a budget you can lose.
What's new in jackpot slots
Of the games with a release date, 61 are from 2026 and 45 from 2025, against 12 from 2024 and 13 from 2023. The 2026 wave is led by TaDa Gaming (27), Pragmatic Play (9) and Playson (5). Big Time Gaming added three Megapots games this year: Millionaire Megapots (March), Monopoly Megapots (April) and Fruit Merge Megapots (May).
Before you stake on a jackpot slot
Open the info screen and check three things. First, which tiers are progressive and which are fixed multiples. Second, the RTP version: Jackpot King games in our library run 93.02% to 95.93% across the 12 with a published RTP, TED Jackpot King at the low end. Third, whether the top prize needs a particular stake: in the progressive system described by Wikipedia, all wagers count towards the pool, including those below the maximum bet, and a Jackpot King can trigger on any spin from any stake. Where a game does tie the prize to a stake, the rules say so.
Features often combined with jackpots
Among the 246: 105 are free spins slots, 77 multiplier slots, 45 Hold and Win slots, 39 Cash Collect slots, 27 bonus buy slots, 22 wheel bonus slots and 17 Megaways slots. Compare all of them on the slot features page.
Studios behind jackpot slots
22 studios make jackpot slots in our library:
- Pragmatic Play (59): Wolf Gold Ultimate, Great Rhino Deluxe and the Big Bass Jackpot Bonanza series.
- TaDa Gaming (46): 27 of its jackpot slots are 2026 releases, the most of any studio this year.
- Blueprint Gaming (33): Jackpot King, Rapid Fire and Genie Jackpots.
- Playtech (25): the PowerPlay Jackpot line.
- Wazdan (21).
Playing jackpot slots for real money
A casino can run a different RTP version of a game than the demo shows, so check the info screen. The GRAI has licensed remote betting in Ireland since 1 July 2026, and online gaming licences are due from 2027, so check a casino's licence on our safest online casinos list and compare where to play on best slot sites. Chasing a big prize can lead to larger stakes or longer sessions. Play is for adults 18 and over. If gambling stops being fun, GamblingCare.ie runs a free 24-hour helpline on 1800 936 725, and there is more help on responsible gambling.
Jackpot FAQ
It's a slot whose top prize is either fixed, a multiple of your stake, or progressive, growing with every bet placed. We have 246 jackpot slots from 22 studios (November 2026); Wolf Gold Ultimate from Pragmatic Play is a good first one.
A fixed jackpot pays a set multiple of your stake and never grows. A progressive adds a share of every bet to a pool that resets when someone wins it, as in Diamond Mine Megaways Jackpot King.
Often they return less over time, because part of each bet feeds the pool. Diamond Mine Megaways has a 96.43% RTP and its Jackpot King version 94.5%. Across our 137 jackpot slots with a published RTP, 17 sit below 95%.
Pragmatic Play, with 59 of the 246, then TaDa Gaming (46), Blueprint Gaming (33), Playtech (25) and Wazdan (21). Browse the Pragmatic Play catalogue to see them.
Among the games with a confirmed figure, Wish Upon a Leprechaun from Blueprint Gaming shows 50,000x in its game rules. That is a cap per spin on a 20 cent stake (€10,000), not the size of a progressive pool, and reaching it is very unlikely.
Yes, every demo here is free with no account. A demo uses play credits, so a win can't be cashed and it doesn't feed a real pool; to play for money, see the best slot sites in Ireland.