Jammin’ Jars Slot (Push Gaming)

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.

Chris Taylor

- Your Slots Guide 👍

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.

Released on the 18^th 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

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.

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.

Collapse

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.

Rainbow

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

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

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%.

Jammin' Jars Slot

Rating: 4.6/5

Jammin' Jars is arguably the most popular Cluster Pays slot with a 96.83% RTP rate and 19,998.5 x bet max wins. It prompted Push Gaming to create a sequel and various spin-offs.

Chris Taylor

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).

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

- Your Bingo Guide 👍

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 involved creating great content and looking after marketing activities. Jenny is knowledgeable in all areas with specialisation in Bingo and Online Slots.