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Quick verdict: Jammin’ Jars is a fruity cluster-pays slot from Push Gaming on an 8×8 grid. Its jam jar wilds move after each win and carry multipliers that grow every time they are part of a winning cluster, with no upper limit in free spins. The RTP is 96.83%, and the maximum win is about 20,000x. It is one of the best-known cluster slots online.
Where we play Jammin’ Jars
1win is our top-rated casino (9.9/10), with thousands of slots and a crypto withdrawal that took 15 minutes in our test.
Play at 1win18+. T&Cs apply. Not available in every country. Game libraries vary, so search the lobby for Jammin’ Jars.
Jammin’ Jars at a glance
| Provider | Push Gaming |
| Released | 2018 |
| Layout | 8×8 grid, cluster pays (5 or more) |
| RTP | 96.83% (lower versions exist) |
| Volatility | High (some reviews rate it medium) |
| Max win | About 20,000x your bet |
| Free spins | 6, with uncapped jar multipliers |
| Extra features | Rainbow feature with giant fruit symbols |
How Jammin’ Jars works
You win with clusters of 5 or more matching fruit symbols touching horizontally or vertically. Winning symbols disappear and new ones drop in. The jam jar is a wild that also moves to a neighbouring position after a win. Each time a jar is part of a winning cluster, its multiplier goes up by 1. If several jars are in the same cluster, their multipliers are added together.
The Rainbow feature
When a spin produces no win, the Rainbow feature can trigger at random. It adds one or more giant fruit symbols to the grid, which often creates a win straight away and can start a chain of tumbles.
Free spins
Land 3 or more jam jars to trigger 6 free spins. During the feature, the jars stay on the grid and their multipliers can only go up, with no upper limit. A long chain of wins involving several jars is how the biggest payouts happen. Where allowed, you can buy the feature directly; bonus buys are not available in some countries, including the UK.
RTP and volatility: what they mean for you
At 96.83%, Jammin’ Jars has a slightly higher RTP than many popular slots, a house edge of about 3.2%. Push Gaming also offers lower versions, so check the info screen. Results swing a lot: the base game can be quiet, while free spins with several growing jars can pay many times your stake. Compare it with other games in our highest RTP slots guide.
Tips for playing Jammin’ Jars
- Look for the 96.83% version in the info screen.
- Use small stakes to ride out quiet spells between features.
- Watch where the jars move: wins next to them grow their multipliers.
- Treat any bonus buy as a high-risk stake.
- More tips in our win more, lose less guide.
Slots like Jammin’ Jars
- Jammin’ Jars 2: the sequel with bigger features.
- Razor Shark: another Push Gaming favourite with growing multipliers.
- Sugar Rush: a cluster slot with multiplier spots.
- Reactoonz: a classic cluster-pays slot from Play’n GO.
Where to play Jammin’ Jars
Our top-rated casino, 1win (9.9/10), carries thousands of slots and paid our crypto withdrawal in 15 minutes. Push Gaming titles are not stocked everywhere, so search its lobby for “Jammin” before you deposit. New players can use promo code Ultragambler for the welcome package; see our 1win promo code page. Game libraries and RTP versions vary by country, so search the lobby and check the RTP in the game’s info screen.
Jammin’ Jars FAQs
What is the RTP of Jammin’ Jars?
96.83% in the standard version. Lower versions are also available to casinos.
What is the max win on Jammin’ Jars?
About 20,000x your bet.
How do the jam jars work?
They are wilds that move after each win. Every time a jar is part of a winning cluster, its multiplier rises by 1.
How many free spins do you get in Jammin’ Jars?
6 free spins, triggered by 3 or more jam jars. Jar multipliers have no upper limit during the feature.
Who makes Jammin’ Jars?
Push Gaming. It was released in 2018.
Important: check your local laws before you play
Online gambling laws differ from country to country, and in some places it is restricted or not permitted at all. Check that online gambling is legal where you live and that the casino accepts players from your country. You must be 18 or older (or the legal gambling age in your country, if higher). Only gamble with money you can afford to lose.
