Jammin’ Jars Slot Review
Last updated: July 2026
The Jammin’ Jars slot by Push Gaming is a disco-fruit cluster classic and one of the studio’s biggest hits. Its signature wild jars stay on the grid and grow their multiplier every time they win, which is how it reaches its roughly 20,000x top payout. It runs a strong 96.83% RTP and is high volatility. Here is the honest guide: how the jars really work, the lower RTP versions, and where to play.
Our score: 4.2/5. A joyful, brilliantly designed cluster slot with a genuinely clever growing-wild mechanic and a strong default RTP. Marked down for high volatility and Push Gaming’s lower-RTP versions. A deserved modern classic.
Jammin’ Jars at a glance
What is the Jammin’ Jars slot?
Jammin’ Jars is Push Gaming’s breakout classic, released in 2018, a joyful disco-themed cluster slot where jam jars jive across a dancefloor of fruit. Its bright 70s look and its clever growing-wild mechanic made it a huge favourite, and it remains one of the most-played cluster slots around. It is an 8×8 grid where wins come from clusters, not paylines.
How Jammin’ Jars works
You win with clusters of 5 or more matching fruit touching horizontally or vertically. Winning symbols clear, new fruit tumbles down, and fresh clusters keep paying, chaining tumbles from one spin.
The wild jars are the genius of it. The jam jar is both a wild and a scatter, and each one carries a multiplier that starts at 1x. Every time a jar is part of a winning cluster, its multiplier climbs by one, and the jar stays on the grid and moves around as the fruit tumbles, applying its ever-growing multiplier to future wins. Keep a jar alive through a long run of tumbles and its multiplier can build into something huge. There is also a Rainbow feature that randomly drops giant fruit onto the grid, bursting into a big same-fruit cluster.
Jammin’ Jars free spins
Land 3 or more scatter jars to trigger the free spins, and this is where the game earns its ceiling. During the bonus the jar multipliers persist and keep climbing across spins, so several jars each carrying a large, growing multiplier can turn a modest cluster into a massive win. There is effectively no cap on how high the multipliers can build within the round, which is the path to that roughly 20,000x top payout.
Jammin’ Jars RTP and max win
The default RTP is a strong 96.83%, well above average, but Push Gaming also ships a lower 94.25% version (and some operators run other reduced builds), so check the info screen. Volatility is high. On max win, the commonly cited figure is around 20,000x, with Push’s own spec listing a precise 19,998.5x. Note that the 50,000x figure you may see belongs to the sequel, Jammin’ Jars 2, not the original.
Where to play Jammin’ Jars
Jammin’ Jars is a flagship Push Gaming hit, popular in the UK and Europe, a crypto-casino staple, and available at regulated US casinos where Push Gaming is licensed. The casinos below are the ones we have tested that carry it. Scores are out of 10. Remember to check the RTP version.
| Casino | Our score | Type | Review |
|---|---|---|---|
| BetMGM Casino | 8.9 | Real money | Read review |
| LeoVegas | 8.8 | Real money | Read review |
| bet365 Casino | 8.7 | Real money | Read review |
| Stake.com | 7.9 | Crypto | Read review |
| BitStarz | 7.4 | Crypto | Read review |
For the studio behind it, see our best Push Gaming casinos guide.
Chip’s verdict on Jammin’ Jars
Jammin’ Jars is pure joy, and one of the smartest cluster slots ever made. The disco theme is infectious, and the growing wild jars are a genuinely brilliant mechanic, the tension of keeping a jar alive as its multiplier ticks higher and higher is unlike anything else. The 96.83% RTP is strong, and a good free-spins round with several fat jars is a real spectacle.
My honest cautions are the high volatility, which means patience, and Push Gaming’s lower-RTP versions, so check the info screen. Play the 96.83% version, bankroll for the swings, and enjoy a modern classic that thoroughly earns its reputation. Score it 4.2 out of 5. See how we rate.
Frequently asked questions
What is the RTP of Jammin’ Jars?
The default RTP is a strong 96.83%, but Push Gaming also ships a lower 94.25% version, and some operators run other reduced builds. Check the in-game info screen for the figure where you play.
What is the max win on Jammin’ Jars?
Around 20,000x your stake, with Push Gaming’s spec listing a precise 19,998.5x. The 50,000x figure you may see belongs to the sequel Jammin’ Jars 2, not the original.
How do the wild jars work?
The jam jar is both wild and scatter, with a multiplier starting at 1x. Each time a jar is part of a winning cluster its multiplier climbs by one, and it stays on the grid and moves, applying its growing multiplier to future wins.
How do the Jammin’ Jars free spins work?
Land 3 or more scatter jars to trigger free spins, where the jar multipliers persist and keep climbing across spins. Several jars with large growing multipliers are how the big wins and the top payout happen.
Is Jammin’ Jars high volatility?
Yes, it is high volatility. The big wins are concentrated in the free spins and in long tumble runs that grow the jar multipliers, so bankroll for the swings.
Who makes Jammin’ Jars?
Jammin’ Jars is made by Push Gaming and was released in 2018. It is the studio’s breakout hit, followed by the sequel Jammin’ Jars 2 in 2021.
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