How it plays
Jammin' Jars is an 8x8 cluster-pays slot: five or more matching fruit symbols touching horizontally or vertically pay out, then cascade away as new symbols drop in. The stars are the jam jars — wilds that carry a multiplier starting at 1x, join any cluster, and jump to a new position after every cascade, growing +1x with each win they take part in.
The randomly triggered Rainbow feature drops giant fruit symbols onto the grid to force new clusters.
Bonus features
Landing 3+ jam jars in view triggers the free games feature, where the jars turn sticky-style persistent: they keep their accumulated multipliers for the whole bonus and keep growing with every cascade — the engine behind the game's biggest hits.
A bonus buy is available in eligible markets. Push Gaming lists the highest observed win at 19,998.5x, with the top win widely published as 20,000x.
RTP versions
Push Gaming publishes two configurations: 96.83% and 94.25%. The provider notes RTP may vary per casino and is shown in the game's user panel and loading screen.
Volatility is officially rated high.
Verdict
Released in September 2018, Jammin' Jars turned a cheerful disco fruit theme into one of the most volatile cluster games of its era — its roaming, compounding jar multipliers remain Push Gaming's signature mechanic.
