If you’ve played at slot sites, chances are you’ve come across Jackpot King slots, a signature progressive jackpot network from Blueprint Gaming. These titles offer 7-figure payouts, but there’s more to them than just big prizes.
In this guide, I’ll explain how the Jackpot King system works, what makes it different from other progressive jackpots, and which games are the most popular (including reviews and free demo slots). Whether you’re spinning for fun on slot games or aiming for a progressive jackpot win, below is everything you need to know.
Best Jackpot King Casinos
The best for Jackpot King games
1. Unibet Casino
Unibet Casino offers UK players over 3,750 games including slots, live dealer tables and progressive jackpots. Licensed by the UK Gambling Commission, Unibet boasts 35+ Jackpot King slots as well as exclusive Dream Drop jackpot slots. It features mobile-friendly apps for iOS and Android alongside fast withdrawals (some within 12 hours). The Unibet Real-Time Jackpot King Jackpot is £1,051,109.93.
- No. of slots 3750+
- Payout speed Instant Options
- Win rate Variable
- Exclusive Slots & Instant Withdrawals
- iOS & Android Casino Apps
2. BetVictor Casino
BetVictor Casino offers UK players a well-established online casino under the licence of the UK Gambling Commission, with roots tracing back to 1946. Its hallmarks include over 3,000 slots and a large live dealer section, plus over 50 Jackpot King games. With mobile-friendly apps and swift withdrawals, the minimum deposit is just £5.
- No. of slots 4000+
- Payout speed 24 Hours
- Win rate 96.82%
- Quick & Free Withdrawals
- iOS/Android Casino Apps
3. Grosvenor Casino
With 45+ Jackpot King titles, Grosvenor Casino is a well-established UK brand operated by the Rank Group and licensed by the UK Gambling Commission. It offers a strong live-casino experience, including exclusive tables streamed from its land-based venues, and a wide selection of slots and table games from top providers. The mobile site and dedicated apps are smooth and user-friendly, making it easy to play on the go. There is also a selection of popular payment methods (such as PayPal) and 24 hour withdrawals.
- No. of slots 500
- Payout speed 24 Hours
- Win rate 96.5%
- 36 Live Dealer Options
- Lots of Weekly Promotions
4. bet365 Casino
bet365 Casino is a well-established UK-licensed platform with a UKGC licence that offers 2,500+ games including over 2,000 slots and 200+ progressive jackpots. With 30+ Jackpot King slots, banking is robust with multiple deposit/withdrawal methods (including PayPal, Apple Pay and Google Pay), often processed within 1-4 hours and no fees. The user interface is noted for its clarity and ease of navigation, with separate apps for slots, live casino and sportsbook.
- No. of slots 2,000+
- Payout speed 24 Hours
- Win rate Variable
- Huge Selection of Slot Games
- Instant Withdrawals & Dedicated Casino App
5. Coral Casino
Coral Casino offers UK players a solid and trusted online casino experience backed by its long-standing brand heritage. With 2,000+ games available, including 50+ Jackpot King slots, live-dealer tables and some exclusive titles, it delivers in variety. The user experience is praised for strong mobile compatibility and easy deposits/withdrawals. The latter are processed within 8 hours to e-wallets.
- No. of slots 550
- Payout speed Instant options
- Win rate Variable
- Trusted Brand With Over 2,000 Games
- PayPal Casino
Top 5 Jackpot King Slots
With over 60 Jackpot King games to choose from, I’ve gone for a mixture of popular slots and newer releases to give you variation. For reference, the real-time Jackpot King jackpot is from Unibet Casino (but varies at different sites).
| # | Slot Name | RTP % | Volatility | Max Win (x Bet) | Minimum Bet | Release Date |
|---|---|---|---|---|---|---|
| 1 | The Goonies Megaways Quest for Treasure JK | 94.99% | Medium-High | 10000 | £0.10 | 25/05/2025 |
| 2 | King Kong Cash Even Bigger Bananas JK | 94.99% | Medium-High | 10000 | £0.10 | 19/10/2023 |
| 3 | Deal or No Deal Megaways JK | 95.83% | Medium-High | 50000 | £0.10 | 19/09/2019 |
| 4 | Fishin' Frenzy The Big Catch JK | 95.32% | Medium | 50000 | £0.10 | 16/12/2021 |
| 5 | The Flintstones Bedrock Riches JK | 94.99% | Medium-High | 10000 | £0.20 | 10/07/2025 |
1. The Goonies Megaways Quest for Treasure Jackpot King
Real-Time Jackpot: £1,051,109.93
- RTP: 94.99%
- Max Win: 10,000x
- Volatility: Medium-High
- Stakes: 10p to £5
- Release Date: 25 May 2025
In The Goonies Megaways Quest for Riches Jackpot King, you traverse on a 6 reel Megaways grid with up to 15,625 ways to win, from 10p per spin. In this official movie slot, unlock a Treasure Map trail by landing Cash Collect symbols, progressing to enhanced features like fixed max Megaways, Cash Collect mode and trail multipliers up to 20x.
The Treasure Spins feature award 10 free spins with upgradeable chests for unlocked features, extra free spins, Cash Collect multipliers up to 10x and an ‘Enhanced’ version, for up to 10,000 x bet max wins. The Jackpot King Deluxe Bonus can trigger randomly where you collect Crowns for bet multiplier prizes and 3 progressive jackpots.
2. King Kong Cash Even Bigger Bananas Jackpot King
Real-Time Jackpot: £1,051,109.93
- RTP: 94.99%
- Max Win: 10,000x
- Volatility: Medium-High
- Stakes: 10p to £5
- Release Date: 19 October 2023
Set in a jungle backdrop, King Kong Cash Even Bigger Bananas Jackpot King has 6 reels and 4,096 ways to win. This slot features a series of Kong Collect upgrades such as Dual Collect, Lock & Spin and Cash Boost that activate as you play.
Banana Cash symbols can be collected and boosted, while the Free Spins feature starts with 10 free spins and can increase via milestones with up to 10x multipliers. With 10,00 x bet max wins, the game is part of the progressive Jackpot King network, giving you a shot at cash prizes and 3 progressive jackpots.
3. Deal or No Deal Megaways Jackpot King
Real-Time Jackpot: £1,051,109.93
- RTP: 95.83%
- Max Win: 50,000x
- Volatility: Medium-High
- Stakes: 10p to £5
- Release Date: 19 October 2019
Beat the banker in Deal or No Deal Megaways Jackpot King, a game that fuses the iconic Deal or No Deal TV show theme with the Megaways engine. Offering 6 reels up to 117,649 ways to win, there are cascading symbols that advance a Bonus Trail.
The Bonus Trail can trigger multipliers, instant wins, the show-style pick game and free spins with an unlimited win multiplier for up to 50,000 x bet max wins. There is also the Jackpot King Deluxe Bonus feature where cash prizes and progressive jackpots can be triggered on any spin.
4. Fishin’ Frenzy The Big Catch Jackpot King
Real-Time Jackpot: £1,051,109.93
- RTP: 95.32%
- Max Win: 50,000x
- Volatility: Medium
- Stakes: 10p to £5
- Release Date: 16 December 2021
Fishin’ Frenzy The Big Catch Jackpot King is another sequel in the popular Fishin’ Frenzy series and has 5 reels, 3 rows and 10 fixed paylines. The Free Games feature begins with up to 20 free spins: with Fisherman Wilds collecting Fish symbol prizes, collecting 4 Fisherman Wilds upgrades fish prizes and grants up to 35 extra free spins.
With 50,000 x bet max wins, you also have the Jackpot King Deluxe Bonus feature where you collect Crowns to win cash prizes and hopefully enter the Wheel King section, where 3 progressive jackpots can be won.
5. The Flintstones Bedrock Riches Jackpot King
Real-Time Jackpot: £1,051,109.93
- RTP: 94.99%
- Max Win: 10,000x
- Volatility: Medium-High
- Stakes: 20p to £5
- Release Date: 10 July 2025
The Flintstones Bedrock Riches Jackpot King is a branded slot played with 5 reels and 20 paylines. The base game includes a Cash Collect trail where landing Collect symbols (initially on reels 1 & 5) advances unlocks such as Lock & Collect, Win Stepper, Cash Match and Super Collect.
The main bonus is Cash Spins, triggered by scatters, where Flintstones characters (e.g. Fred, Barney, Betty, Wilma and Dino) add modifiers like extra rows, boosted values or random prizes. There’s also a Bedrock Riches Bonus offering coin picks, fixed jackpots (Mini, Minor, Major, Mega) and multipliers once the trail is fully unlocked. With 10,000 x bet max wins, there is also the 3 progressive jackpots to be won.
What Is Jackpot King?
Jackpot King is a progressive jackpot system developed by Blueprint Gaming, one of the UK’s leading slot studios. It links a wide range of Blueprint titles to a shared jackpot pool, giving you the chance to win big on almost any Jackpot King-enabled game.
Instead of each slot having its own pot, the Jackpot King system connects many games, meaning more spins feeding into 1 prize. The more people play across the network, the faster the jackpots grow.
Jackpot King Facts & Information
Below, you’ll find information on all Jackpot King slots including RTP rate, volatility, max win potential (jackpots excluded), the minimum bet per spin and release date.
| Slot Game | RTP % | Volatility | Max Win (x Bet) | Minimum Bet | Release Date |
|---|---|---|---|---|---|
| Fishin' Frenzy Even Bigger Fish 3 JK | 95.49% | Medium-High | 10000 | £0.10 | 25/09/2025 |
| Reel King Riches JK | 94.99% | Medium-High | 10000 | £0.10 | 28/08/2025 |
| The Flintstones Bedrock Riches JK | 94.99% | Medium-High | 10000 | £0.20 | 10/07/2025 |
| The Goonies Megaways Quest for Treasure JK | 94.99% | Medium-High | 10000 | £0.10 | 25/05/2025 |
| The Goonies Megaways JK | 94.99% | Medium | 5000 | £0.10 | 25/02/2025 |
| Cop the Lot Megaways JK | 95.49% | High | 10000 | £0.10 | 10/11/2024 |
| Deal or No Deal Bankers Boost JK | 94.99% | Medium-High | 10000 | £0.10 | 17/10/2024 |
| Anubis Rising JK | 94.99% | High | 5000 | £0.10 | 25/04/2024 |
| Plenty O' Fish JK | 94.99% | Medium-High | 10000 | £0.10 | 12/03/2024 |
| 777 Deluxe JK | 94.99% | High | 50000 | £0.10 | 07/03/2024 |
| Bankin' More Bacon JK | 96.00% | High | 10000 | £0.10 | 29/02/2024 |
| Cash Strike JK | 94.99% | High | 5900 | £0.10 | 15/02/2024 |
| Gold Strike JK | 94.99% | Medium | 10000 | £0.10 | 25/01/2024 |
| Crabbin for Christmas JK | 94.99% | Medium-High | 2500 | £0.10 | 30/11/2023 |
| Deal or No Deal The Big Hit Megaways JK | 94.99% | High | 50000 | £0.10 | 20/11/2023 |
| King Kong Cash Even Bigger Bananas JK | 94.99% | Medium-High | 10000 | £0.10 | 19/10/2023 |
| Fishin' Frenzy Even Bigger Catch JK | 95.49% | Medium-High | 50000 | £0.10 | 10/08/2023 |
| Big Catch Bass Fishing JK | 94.99% | Medium-High | 4000 | £0.10 | 29/06/2023 |
| King Kong Cash Go Bananas JK | 95.49% | Medium-High | 10000 | £0.10 | 18/05/2023 |
| Luck O' The Irish 7s JK | 93.48% | Medium-High | 50000 | £0.10 | 20/04/2023 |
| Crabbin for Cash JK | 94.99% | Medium-High | 50000 | £0.10 | 10/04/2023 |
| Crabbin' For Cash Extra Big Catch JK | 94.49% | Medium-High | 10000 | £0.10 | 10/4/2023 |
| Crabbin' for Cash Extra Big Splash Jackpot King | 94.99% | Medium-High | 10000 | £0.10 | 06/04/2023 |
| 7s Deluxe Fire Wheel JK | 94.99% | High | 1250 | £0.25 | 09/02/2023 |
| Deal or No Deal Box Clever JK | 95.49% | Medium-High | 5000 | £0.10 | 26/01/2023 |
| Funky Pharaoh JK | 93.53% | Medium-High | 50000 | £0.10 | 20/09/2022 |
| Mega Bars Big Hit JK | 95.99% | Medium-High | 50000 | £0.10 | 30/08/2022 |
| Eye of Horus The Golden Tablet JK | 93.52% | High | 50000 | £0.10 | 11/08/2022 |
| Fishin' Frenzy The Big Catch JK | 95.32% | Medium | 50000 | £0.10 | 12/05/2022 |
| Luck O' The Irish Gold Spins JK | 94.94% | High | 50000 | £0.20 | 28/04/2022 |
| The Goonies Return JK | 93.55% | Medium | 50000 | £0.10 | 07/04/2022 |
| Mega Bars Fortune Wheel JK | 95.49% | Medium-High | 50000 | £0.10 | 10/03/2022 |
| Gold Strike Bonanza JK | 93.84% | Medium-High | 2500 | £0.10 | 20/01/2022 |
| Fishin' Frenzy The Big Catch JK | 95.31% | Medium | 50000 | £0.10 | 16/12/2021 |
| Bankin' Bacon JK | 94.99% | Medium-High | 10000 | £0.10 | 30/09/2021 |
| King Kong Cashpots JK | 95.49% | Medium | 50000 | £0.10 | 21/08/2021 |
| Jackpot King Deluxe Prize Lines | 95.49% | Medium | 50000 | £0.10 | 03/06/2021 |
| Top Cat Most Wanted JK | 95.96% | Medium-High | 5000 | £0.10 | 04/03/2021 |
| Diamond Mine Megaways JK | 94.99% | High | 10000 | £0.20 | 21/02/2021 |
| Eye of Horus Megaways JK | 94.99% | High | 50000 | £0.10 | 21/02/2021 |
| Genie Jackpots Wishmaker JK | 96.06% | Medium-High | 50000 | £0.10 | 04/02/2021 |
| Rick And Morty Wubba Lubba Dub Dub JK | 95.49% | Medium | 50000 | £0.10 | 26/11/2020 |
| Eye of Horus JK | 95.95% | Medium | 10000 | £0.10 | 06/11/2020 |
| Bison Rising Megaways JK | 96.49% | High | 10000 | £0.10 | 20/09/2020 |
| 7s Deluxe JK | 95.92% | Medium-High | 1250 | £0.25 | 20/08/2020 |
| King Kong Cash JK | 95.50% | Medium-High | 10000 | £0.10 | 05/06/2020 |
| Fishin' Frenzy JK | 96.32% | Medium-High | 5000 | £0.10 | 20/04/2020 |
| Wonder of Ages JK | 95.49% | Medium-High | 10000 | £0.20 | 19/03/2020 |
| Ted JK | 93.51% | Medium-High | 10000 | £0.10 | 21/11/2019 |
| Mighty Griffin Megaways JK | 95.95% | Medium-High | 50000 | £0.10 | 20/11/2019 |
| The Goonies JK | 96.00% | Medium | 500 | £0.10 | 19/10/2019 |
| Deal or No Deal Megaways JK | 95.83% | Medium-High | 50000 | £0.10 | 19/09/2019 |
| King Spin Deluxe JK | 96.08% | Medium-High | 10000 | £0.10 | 29/07/2019 |
| Fishin' Frenzy Megaways JK | 94.99% | Medium | 50000 | £0.10 | 25/04/2019 |
| Monkey Business JK | 96.49% | Medium-High | 1250 | £0.20 | 28/03/2019 |
| Tridentia JK | 93.69% | Medium-High | 50000 | £0.10 | 26/12/2018 |
| Fortunes of Ra JK | 97.01% | High | 5000 | £0.10 | 30/07/2018 |
| Slots O' Gold Megaways JK | 95.96% | High | 50000 | £0.20 | 24/07/2018 |
| Irish Riches Megaways JK | 96.42% | High | 10000 | £0.20 | 15/05/2018 |
| Gold Frenzy JK | 93.81% | Medium | 2000 | £0.10 | 09/05/2018 |
| Wish Upon A Leprechaun JK | 92.56% | Medium | 500 | £0.20 | 06/12/2017 |
| Winstar JK | 96.00% | Medium | 50000 | £0.20 | 05/10/2017 |
| Diamond Jackpots JK | 94.61% | Medium | 10000 | £0.20 | 05/10/2017 |
| The Pig Wizard JK | 94.23% | High | 10000 | £0.20 | 01/05/2017 |
| Genie Jackpots JK | 93.22% | Medium | 50000 | £0.20 | 01/09/2016 |
| Cop the Lot JK | 95.55% | Medium | 10000 | £0.20 | 01/09/2016 |
| Fruitinator JK | 96.53% | Medium | 500 | £0.10 | 01/09/2016 |
- Highest RTP Rate: The game with the highest RTP is Fortunes of Ra Jackpot King (97.01%)
- Highest Max Wins: Many titles offer 50,000 x bet max wins, including Mighty Griffin Megaways Jackpot King and Eye of Horus Megaways Jackpot King
- Bet Range: You can play most Jackpot King slots from 10p a spin with many at 20p per spin
- First Release: In September 2016, Blueprint Gaming released Genie Jackpots Jackpot King, Cop the Lot Jackpot King and Fruitinator Jackpot King
- Biggest Jackpot Won: In April 2021, a €8,133,445.23 jackpot was won on Deal or No Deal Megaways Jackpot King at PokerStars Casino
How Jackpot King Works: Step-by-Step
Let’s break down how the Jackpot King feature triggers and how the jackpot prizes are awarded:
1. Triggering the Jackpot King feature
- On any base game spin, if you land 5 or 6 Jackpot King symbols, the bonus round is activated.
- You don’t need to land a specific combination on a payline: the symbols can appear anywhere.
2. Collecting Crowns in the Bonus
- Once triggered, you’re taken to the Jackpot King Bonus Game, where you spin a different set of reels.
- You collect crown symbols: the more you collect, the better your prize potential.
- Reach 15 or more crowns, and you move to the Wheel King.
3. The Wheel King – Big Jackpots Time
- The Wheel King is where things get serious.
- You spin a mega bonus wheel for a big win multiplier or 1 of the 3 progressive jackpots.
The 3 Jackpot King Progressive Pots
Here’s what’s up for grabs in every Jackpot King slot:
| Jackpot | Starting Value | Maximum Payout |
|---|---|---|
| Jackpot King | £50,000 | Unlimited |
| Regal Pot | £5,000 | £35,000 |
| Royal Pot | £500 | £3,500 |
The Jackpot King pot is the headline act: this is the one that regularly pays out 6 and 7-figure jackpots. It’s the dream target for anyone chasing a monster win.
Tips for Playing Jackpot King Slots
- Play responsibly: These are progressive slots, so the odds of triggering the jackpot are small.
- Bet size doesn’t affect your chances of entering the Jackpot King round: any spin can do it.
- Try different games: The Jackpot King mechanic is available in dozens of slots, from classic fruit machines to high-volatility adventures.
- Test in demo mode first if possible: slot games without risk let you explore features freely.
Pros & Cons of Jackpot King Slots
Pros
- Big jackpot potential (often 7 figures)
- Over 65+ slots to choose from
- Any spin can trigger a jackpot: no strategy required
- Available at most UK casinos & slot sites
Cons
- Lower RTP than standard slots
- Jackpot triggers are rare
- Jackpots vary from casino to casino
Alternative Jackpot Networks
If you want to play more progressive jackpots slots, below is a selection of the best jackpot networks for UK players:
The Best Mega Moolah Slots & Slot Sites
Dream Drop Slots: Reviews, Free Demos & Jackpot Winners
The Ultimate Guide to Age of the Gods Slots
WowPot Jackpot Slots: What They Are & How They Work
Megapays Slots Explained: Progressive Jackpots, Top Games & Where to Play
Sporting Legends Slots: Full Guide to Playtech’s Jackpot Sports Series
You can find a lot more out, including the biggest ever progressive jackpot winners, in my guide to the best jackpot slots:
Best Progressive Jackpot Slots: How to Win & Real-Time Trackers
Final Thoughts
Blueprint Gaming’s Jackpot King system is one of the most exciting progressive jackpots available at UK slot sites. It’s accessible, versatile, and linked across a broad catalogue of slots, from nostalgic classics to modern video slots.
While wins aren’t guaranteed and the RTP is slightly lower, the potential rewards are huge. If you enjoy high-risk, high-reward gameplay with the added thrill of a progressive jackpot, Jackpot King slots are well worth a look.
FAQ
Jackpot King Slots FAQs
Can I win the Jackpot King on any Blueprint Gaming slot?
No, only games with the Jackpot King badge are eligible. There is a comprehensive list of Jackpot King slots in OLBG’s guide.
What is the biggest Jackpot King jackpot ever won?
A lucky PokerStars Casino player won €8,133,445.23 playing Deal or No Deal Megaways in April 2021.
Is there a minimum bet to win the jackpot?
No, any spin can trigger the Jackpot King Deluxe Bonus feature regardless of stake. There have been plenty of winners at the minimum bet (starting from 10p a spin).
How often does the Jackpot King pay out?
There’s no fixed schedule. The progressive jackpot is won at random and can grow to 7 figures before triggering.
Can I play Jackpot King slots on mobile?
Yes, all Blueprint’s Jackpot King games are optimised for mobile play. They’re also available on desktop and tablet devices.
Why is the RTP rate lower in Jackpot King slots?
The RTP rate is lower because a portion of each spin contributes to the 3 progressive jackpots. Your chances of winning in the game are low but you have the chance to win 3 jackpots.
