Jammin’ Jars Slot (Push Gaming)

RTP: 96.83%

Provider: Push Gaming

Best casinos: Monopoly Casino, Spin and Win, Rainbow Riches, TheVic, Dream Vegas

Jammin' Jars Key Features

RTP: 96.83%

Provider: Push Gaming

Volatility: High

Theme: Fruit

Reel style: 8x8

Paylines: Cluster Pays

Stakes: 20p to £100

Max Win: 19,998.5 x bet


Free Spins

Wild Multipliers

Cascading Wins


Get into the groove with Push Gaming’s Jammin’ Jars slot. Played on an 8x8 grid and with a Cluster Pays mechanic, you can hit the dancefloor from just 20p per spin. It’s become one of the most popular slot games in the UK too. If you’re a mobile player, there’s a Portrait Mode which enhances the experience.

With Collapses/cascades for successive wins, cluster wins involving the Jam Jar Wild see it remain on the grid and increase its multiplier by 1 each time. With a random Rainbow feature that delivers giant fruit symbols onto the grid, the Free Games feature offers more of the same. The difference is the Jam Jar Wild multiplier values can only increase.

With a high 96.83% RTP rate and 19,998.5 times bet max wins, Jammin’ Jars has become a popular choice at the best slot sites. Find out why in our detailed Jammin’ Jars review.

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Slot Details

The Jammin’ Jars slot is played on an 8x8 grid and uses Cluster Pays. Unlike traditional reels and paylines, winning combinations are created when a cluster of 5 or more identical symbols appear anywhere on the reel. The matching symbols need to be adjacent to one another (i.e. touching) vertically and/or horizontally.

Bets-wise, you can play Jammin’ Jars from as little as 20p a spin to as much as £100 per spin. At some UK online casinos, the max bet will be limited to £20 or £10 per spin. If you’re located outside the UK, you can opt for Autoplay which allows up to 100 auto spins as well as loss and single win limits. In the Settings section, there is a Turbo Mode function which makes the game faster.

When it comes to returns, the Jammin’ Jars RTP rate is 96.83%. High compared to the average of 96%, it puts this slot amongst the highest RTP slot games. Push Gaming has also produced 95.25% and 94.24% RTP alternative versions which will be used at some slot sites (check in the game’s Paytable).

Highly volatile, this is no hit frequency rate information available. Finally, the Jammin’ Jars slot can reward you with 19,998.5 times bet maximum wins on each spin.

Slot Review Game Data
StudioPush Gaming
Theme Fruit/Disco
RTP %96.83% | 95.25% | 94.24%
Reels8x8 Grid
PaylinesCluster Pays
Stake Range20p to £100
Max Win19,998.5 x Bet
Hit Frequency RateNA
Bonus Features5
Release Date18th of September 2018
Chris Taylor

Chris Taylor

The king of slots

Chris Taylor is an industry veteran originally from Gibraltar. Having worked in the online gambling industry since 2004, Chris loves slots and has reviewed over 10,000 online slot games. Running a slots-focused website for 13 years, Chris is the go-to guy for everything slots-related. 

👨‍🏫 Specialist Subjects🔬📚

Chris’ online gambling career has spanned more than 2 decades. This includes working for online casino sites, consulting for software/slot providers and running his own slots portal. 

With a passion for slots, Chris reviews games from an honest and blunt point of view to give readers an accurate portrayal of the slots they might play. The slot games are just the start as Chris deep dives into the slot sites to provide factual and insightful information as to where to play the games he so loves. 

Jammin' Jars Expert Review

Theme & Symbols
Bonus Features
Max Win (19,998.5 x bet)
Sounds & Music
RTP (96.83%)

Theme, Audio + Symbols

Jammin' Jars slot base game screenshot

Released on the 18th of September 2018, the Jammin’ Jars slot has a fruits/disco theme. This funky release sees you head to the dancefloor to get your groove on. Colourful and bright, you’ll notice the disco ball on which the game’s logo sits. You’ll also notice the groovy disco-style soundtrack which will have you shaking your hips in no time.

On the 8x8 grid, there are 6 brightly-coloured fruit symbols including a blueberry, plum, green apple, raspberry, orange and strawberry. Clusters of at least 5 matching symbols are required with 25 or more awarding the top payout for that symbol. The strawberry symbol is the highest paying awarding 100 times your total bet for 25 or more in a cluster. Here’s a list of symbol payouts:

  • Blueberry: 5-25+ = 0.1 to 10 x bet
  • Plum/Green Apple: 5-25+ = 0.15 to 25 x bet
  • Raspberry: 5-25+ = 0.25 to 37.5 x bet
  • Orange: 5-25+ = 0.5 to 62.5 x bet
  • Strawberry: 5-25+ = 1 to 100 x bet

Then you have the Jam Jar Wild symbol which substitutes for all symbols above. If part of a winning cluster, the symbol randomly moves to an adjacent, vacant position before the Collapse feature is played. When a Collapse occurs, all Jam Jar Wilds are held in position. They also come with increasing multipliers (more details can be found below).

Jammin’ Jars Mobile

Jammin' Jars slot Portrait Mode mobile screenshot

With Push Gaming being a mobile-first studio, Jammin’ Jars is available to play on smartphones, tablets, laptops and/or PCs. The 8x8 grid layout makes it perfect for playing on mobile devices as Push Gaming deploys Portrait Mode on all their slot games to ensure the best user experience. For me, Jammin’ Jars is suited to the best casino apps as it fits the screen nicely.

Bonus Features

The Jammin’ Jars slot game has a total of 5 bonus features. Winning clusters lead to Collapses/cascades with Jam Jar Wilds containing an increasing multiplier. The random Rainbow feature sees giant fruit symbols land on the grid for guaranteed wins. In the Free Games feature, Jam Jar Wild multipliers can only rise, with no limits.


When a winning cluster of matching symbols lands, the Collapse feature is activated. Winning symbols disappear from the grid with existing symbols dropping down into the newly-vacated spaces. Then new symbols fall in from above. This allows you to form another winning cluster. This process is repeated as long as winning clusters are formed.


Jammin' Jars slot Rainbow feature screenshot

When no winning cluster is formed, the Rainbow feature can randomly trigger. A rainbow animates over the grid and adds 1 or more giant fruit symbols. If matching symbols appear adjacent to the giant fruit symbol, they will become part of the winning cluster for a bigger payout.

Jam Jar Multiplier

Jammin' Jars slot Jam Jar Wild Multipliers screenshot

Keep an eye out for the Jam Jar Wild symbol being part of a winning cluster. If so, it moves to an adjacent and empty position before the next Collapse occurs. These Jam Jar Wilds are held in position too.

Importantly, Jam Jar Wilds have multipliers which increase by 1 every time they are of a winning cluster. The multiplier value can increase with no limits. When no wins occur, they drop off the reels.

Free Games

Jammin' Jars slot Free Games feature screenshot

Landing 3 or more Jam Jar Wild symbols anything on the grid during a base game spin will see you trigger the Free Games feature. 6 free spins are then awarded. If you trigger the feature with any Jam Jar Wild multipliers, they will be carried over to the free spins.

If a Jam Jar Wild contributes to a cluster win, the symbol randomly moves to an adjacent, vacant position before the next Collapse. Held in position, the multiplier increases by 1. Unlike the base game, multiplier values can only rise meaning bigger wins potentially.

Bonus Buy

Not available to us mere mortals in the UK, there is an optional Bonus Buy feature that was added to Jammin’ Jars back in October 2021. It allows you to buy your way into the Free Games feature for a fee of 84 times your total bet. If playing with the highest RTP setting (96.83%), the RTP for this feature is 96.49%.

Expert Verdict

Jammin; Jars slot OLBG rating banner

The Jammin’ Jars slot is a well-designed game that was created with mobile players in mind. With Push Gaming using Portrait Mode for an enhanced experience, the graphics and visuals are bold and colourful whilst the 70s/disco soundtrack is upbeat and fun.

With Collapses/cascades, the key symbol is the Jam Jar Wild which comes with an increasing multiplier. If they remain on the grid for a few cascades/collapses, big wins are certainly possible. In the Free Games feature, Jam Jar Wild multiplier values can only increase making it more likely, in theory, to land bigger wins.

High variance, the average win from the Free Games feature is just 82 times your total bet. With 19,998.5 times bet max wins available, you need to ramp up the Jam Jar Wild multipliers. You also have a very high RTP rate of 96.83% which is a lot higher than the norm.

Simple, fast-paced and fun, Jammin’ Jars is a cult favourite amongst slot players and regarded as one of the best Cluster Pays slots available online. Due to its popularity, Push Gaming released a sequel, Jammin’ Jars 2, in June 2021. With similar gameplay, it offers 50,000 times bet max win potential.

Push Gaming has taken things further and created several spin-offs. These include Retro Tapes (November 2022), Giga Jar (March 2023) and Retro Sweets (May 2024).

Editorial Information

The Jammin' Jars slot review was written by Chris Taylor from our OLBG Expert team who has written over 10,000 slot game reviews in an iGaming career spanning over 2 decades. It was then verified by Jenny Mason, our prime Slot reviewer who has 17+ years in online gambling, top UK brands. 

Jenny Mason

Jenny Mason

Slots content manager

Jenny Mason has more than 17 years of experience in the online gambling industry and has worked for some of the UK’s top betting brands. She started at OLBG in 2014 and her role involves creating great content and looking after the marketing activity. Jenny is knowledgeable in all areas of online sports betting and has an interest in slots and bingo.

👨‍🏫 Specialist Subjects🔬📚

🎰🍒🍀 Jenny has become an expert with online slots completing hundreds of our various new slot reviews and creating and writing some of the slot articles found on site. She has become a firm fan of NoLimitCity and Hacksaw gaming slot in this process and always awaits the new releases with much anticipation


Jammin' Jars FAQs

  • What is the Jammin’ Jars RTP rate?

    The Jammin’ Jars RTP rate is 96.83%. High compared to the 96% average, Push Gaming has also produced 95.25% and 94.24% RTP versions which may be used at UK casinos.

  • What is the max win on Jammin’ Jars?

    Jammin’ Jars can deliver maximum wins of 19,998.5 times your total bet. Key to the bigger wins are the Jam Jar Wild multipliers which can rise infinitely during the free spins.

  • Is Jammin’ Jars a good slot?

    Jammin’ Jars is considered one of the most popular online slot games in the UK. It’s among the best Cluster Pays slots which has also spawned a sequel and series of spin-offs.

  • What are the minimum and maximum bets on Jammin’ Jars?

    You can play Jammin’ Jars from 20p to £100 a spin. At some slot websites, the maximum bet may be limited to £20 or even as low as £10 per spin.

  • Is there a Jammin’ Jars demo?

    The Jammin’ Jars free play version can be enjoyed here at OLBG. Available on all devices, it’s best played on smartphone devices due to Push Gaming’s unique Portrait Mode.

  • Which casinos have Jammin’ Jars?

    Jammin’ Jars, as well as other Push Gaming slots, are available at many reputable UK-licensed casinos. Check out OLBG’s recommended sites at the top of our review.

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