Racing Post Logo
Articles

Understanding How Progressive Slots Work: A Beginner’s Guide

Understanding How Progressive Slots Work: A Beginner’s Guide
Phil Agius

Content Reviewer

Updated 12.06.2025
Reading Time 5 min

Progressive slots offer casino players a chance to land a big jackpot without forking out a large stake. Unlike most traditional slot machines, progressive slots offer compounding jackpots that can potentially soar into the millions. This makes them some of the most popular games in online casinos. 

Whether you’re new to slots or just exploring progressive jackpots, this guide will break down everything you need to know, from how progressive slots work, the different types and the best games to consider.

Betfair

Betfair

5/5

WELCOME BONUS

Get 50 Free Spins Plus 100 Free Spins When You Deposit & Play £10.

18+ Offer is available to new customers who register via the promo code CASAFS. Winnings are paid in cash. Free spins valued at 10p. Get an additional 100 free spins when you deposit and spend £10 on eligible games. Full T&Cs apply. Gambleaware.org

18+ GambleAware.org

T&Cs apply.

What Are Progressive Slots?

Progressive slots are a type of online slot game where a portion of each bet contributes to an increasing jackpot. The jackpot keeps increasing progressively until one lucky player lands the winning combination which then resets the prize to a predetermined base amount.

Fixed jackpot slots differ from progressive jackpot slots in that they offer a set maximum payout that doesn’t change, no matter how many players spin the reels. Progressive slots, on the other hand, grow with each wager, making the potential rewards significantly larger.

What Are Progressive Slots?

How Do Progressive Slots Work?

Each time a player places a bet on a progressive slot, a percentage of that wager enters the jackpot pool. The jackpot increases until someone hits the specific winning combination, triggering the grand prize. The system resets the jackpot to its base level, and the cycle starts again.

What Types of Progressive Slots Exist in Online Casinos?

Not all progressive slots are the same. Let’s explore the different types:

1. Standalone

These slots are independent, with their jackpot growing only from bets placed on that specific machine or game. The jackpots tend to be smaller but are still worth a shot.

2. Linked/Network

Multiple machines or games within the same casino platform are connected, pooling together to form one larger jackpot. This setup results in faster-growing prizes.

3. Wide-Area

The largest jackpots come from wide-area progressives, where games are connected across multiple online casinos. Titles such as Mega Moolah (Microgaming), Age of the Gods (Playtech), and Mega Fortune (NetEnt) are famous for creating millionaires through this setup.

BetMGM

BetMGM

5/5

WELCOME BONUS

Up to £200 Extra & 100 Free Spins

New customers only. Opt-in required. Deposit £10 or more & wager 30x on casino games (contributions may vary) for 100% deposit match up to £200 extra & 100 Free Spins. Free spins on Big Bass Splash worth 10p each valid for 3 days. 7 days to deposit, wager, claim. One offer per player. 18+. T&Cs apply.

18+ GambleAware.org

T&Cs apply.

How Do Progressive Jackpots Grow in Online Slots?

The process is simple: each spin contributes a small percentage (usually around 1% to 5%) of the bet to the jackpot. The remaining amount supports the casino’s payout rate and operating costs. The more people play, the faster the jackpot rises.

How to maximise your win chances

Winning a progressive jackpot is largely down to luck but understanding the mechanics helps maximize your chances.

Ways to Win:

  • Random Triggers: Some jackpots activate randomly, regardless of your bet size. Make sure to keep an eye on them.
  • Specific Symbols: Landing a certain combination on a payline may unlock the jackpot.
  • Bonus Rounds: Many progressive slots feature special mini-games where the jackpot can be won.

It is also important you know The Basics of How Online Slots Work.

Tips for Playing Progressive Slots:

  • Manage Your Bankroll: It's best to set a budget and stick to it. Progressive slots are high-risk, high-reward.
  • Understand Bet Requirements: Some slots require a maximum bet to qualify for the jackpot.
  • Pick High RTP Games: Look for games with a decent return-to-player (RTP) percentage.

RNG and Fairness in Progressive Slots

Random Number Generators (RNG) ensure each spin is completely random, making it impossible to predict or manipulate outcomes. Reputable online casinos are licensed and audited to ensure fair play.

Top-Rated Online Casinos in the UK with Progressive Jackpot Slots

If you’re ready to try out some progressive slots, check out these trusted UK online casinos:

Betway

Betway

5/5

WELCOME BONUS

Stake £10 & get 150 Free Spins + A chance to win a Range Rover*

New UK customers only. Deposit & Stake Min £10. Debit card only (exclusions apply). 150 free spins (£0.10) on selected games. Spins expire after 7 days. Tickets for prize draws earned from Free Prize Wheel & Super Prize Wheel. Weekly prizes and grand prize of Range Rover. Max 4 tickets per day. Promotion valid from 01/06/25 to 23:59 BST 27/07/25.

18+ GambleAware.org

T&Cs apply.

Betfair

Betfair

5/5

WELCOME BONUS

Get 50 Free Spins Plus 100 Free Spins When You Deposit & Play £10.

18+ Offer is available to new customers who register via the promo code CASAFS. Winnings are paid in cash. Free spins valued at 10p. Get an additional 100 free spins when you deposit and spend £10 on eligible games. Full T&Cs apply. Gambleaware.org

18+ GambleAware.org

T&Cs apply.

7 Best Online Progressive Slots According to Our Experts

If you’re looking for the best games to try, here’s our best pick.

Hall of Gods

Hall of Gods is a Norse mythology-themed slot with a progressive jackpot, free spins, and a bonus round that features high volatility and the potential for large payouts.

Hall of Gods

Jackpot Giant

Jackpot Giant features a playful giant character, a massive progressive jackpot, a bonus game with up to 50 free spins and vibrant gameplay.

Jackpot Giant

Great Blue

Great Blue is an underwater-themed slot with sharks and dolphins, offering free spins with up to 15x multipliers, high volatility and a bonus game with cash prizes.

Great Blue

Gladiator: Road To Rome

Gladiator: Road To Rome Set in ancient Rome, this game includes a progressive jackpot, a Gladiator bonus round, wild symbols and immersive gameplay.

Gladiator: Road To Rome

Mega Moolah

Mega Moolah is an African safari-themed game, known for its record-breaking progressive jackpots, multiple jackpots, free spins and a 3x multiplier for bigger wins.

Mega Moolah
Slot
Games Global
18+ | Be Gamble Aware

Age of the Gods

Age of the Gods is a Greek mythology-themed slot with linked progressive jackpots, several bonus features and high RTP, featuring gods such as Zeus and Poseidon.

Age of The Gods
Slots
Playtech Games
18+ | Be Gamble Aware

Mega Fortune

A luxury lifestyle-themed slot with a huge progressive jackpot, a bonus wheel that can trigger jackpot rounds and free spins with multipliers.

Mega Fortune

Conclusion

Progressive slots offer exciting gameplay and the chance to win massive jackpots. Whether you’re chasing millions or just enjoying the thrill, remember to play responsibly and manage your budget. Good luck, and may the reels be in your favour.

Tim Mirroman

As a seasoned content writer and copywriter specialising in iGaming, Tim Mirroman brings over 8 years of expertise in crafting high-quality, engaging content that resonates with diverse audiences. With a strong passion for the iGaming industry, he has developed a unique understanding of the sector's nuances and trends. Tim worked with numerous iGaming brands and platforms, creating content that drives player acquisition, retention, and conversion.

FREQUENTLY ASKED QUESTIONS

Yes, progressive slots are fair. Regulated online casinos use RNGs to ensure fairness.