Jammin' Jars launched on September 14, 2018 and is one of Push Gaming's most iconic cluster pays slots — an absolute legend of the fruit/cluster genre, referenced across the entire industry.
TL;DR
- Push Gaming slot, September 2018, the cult original of the fruit-cluster genre. 8x8 grid format, cluster pays.
- 95.25% RTP (92-94% versions common ⚠️), high volatility, MAX 20,000x.
- Avalanche function + cumulative multiplier wilds (jars) + 3x3 mega symbols + a random rainbow feature.
- Free Spins triggered by 3+ jars in the base game. No bonus buy.
Why JJ1 is legendary
This is the fruit-cluster slot that laid the groundwork later reused by Sweet Bonanza (2019), Sugar Rush (2022), Doodle Smash (2024), and every imitator since. Before Jammin' Jars, cluster pays existed (NetEnt's Aloha! Cluster Pays, 2016), but without the combination of cluster + cumulative multipliers + a cult neon aesthetic that defines the genre today.
| Fruit cluster slot | Year | JJ1's influence |
|---|---|---|
| Jammin' Jars | 2018 | Lays the groundwork |
| Sweet Bonanza | 2019 | Reuses cluster + tumble |
| Reactoonz 2 | 2020 | Cluster + Push-style multipliers |
| Sugar Rush | 2022 | Cluster + cumulative multipliers (direct heir) |
| Jammin' Jars 2 | 2020 | Official sequel (50,000x max) |
JJ1 remains the genre's benchmark for quality — try it to understand everything that has followed.
Multiplier wilds (jars) — the signature feature
Jars are special wilds that appear randomly on the grid:
- Each jar carries a multiplier (x2 to x100)
- When a winning cluster includes a jar, the multiplier applies to the win
- During Free Spins, jars become sticky and persistent
- Multipliers accumulate on sticky jars — exponential potential
3+ jars in the base game trigger Free Spins.
Avalanche function — infinite cascades
Base mechanic:
- A winning cluster collapses (5+ connected symbols)
- Symbols drop from above to fill the gaps
- A new cluster may form → the cascade continues
- Infinite cascade for as long as hits keep coming
- Jar multipliers accumulate across the session
During Free Spins, sticky jars don't drop — they stay in place, and their multipliers increment with every winning cascade. That's the path to the 20,000x win.
3x3 mega symbols + random rainbow
Two bonus features:
- 3x3 mega symbols: a massive 3x3 symbol appears randomly and counts as 9 standard symbols
- Random rainbow feature: a rainbow mega-fruit symbol descends from the top of the grid → a guaranteed cluster trigger
Both mechanics keep things exciting even without Free Spins — the neon aesthetic, the rainbow feature, and the multiplier jars are all cult favorites.
JJ1 vs. JJ2 comparison
| Aspect | Jammin' Jars (2018) | Jammin' Jars 2 (2020) |
|---|---|---|
| Format | 8x8 | 8x8 |
| Cluster pays | Yes | Yes |
| Multiplier wilds | x2 to x100 | x2 to x500 (giga jar) |
| Max win | 20,000x | 50,000x |
| Mega symbols | 3x3 | 3x3 + 4x4 |
| Free Spins | Standard | + Giga Jar feature |
JJ1 = the cult original, foundational mechanics, 20,000x max win, pure 2018 aesthetics. JJ2 = a "bigger win" sequel with a x500 giga jar, 50,000x max win.
JJ1 remains the preferred pick for some players for its pacing and mechanical simplicity.
95.25% RTP — degraded versions
⚠️ Like most Push Gaming slots, degraded versions of 92-94% are common at certain casinos. Checking the in-game 'i' button is essential — the long-term difference is significant.
| RTP version | EV vs. the 95.25% version |
|---|---|
| 95.25% | Reference |
| 94% | -1.25pt EV |
| 92% | -3.25pt EV (significant) |
Only play at casinos that display 95.25% in the info panel.
No bonus buy — a 2018 limitation
Released before Push Gaming systematically integrated bonus buys. Consequence: patience is required to trigger Free Spins (3+ jars in the base game).
This is offset by the thrill of anticipation — the pace of clusters, cascades, mega symbols, and rainbow features keeps sessions enjoyable even without a bonus.
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FAQ
What is Jammin' Jars's RTP?
Official RTP: 95.25%. ⚠️ Degraded versions of 92-94% are common depending on the casino. Checking the in-game 'i' button is essential — the EV difference is felt over the long term.
Jammin' Jars 1 or Jammin' Jars 2?
JJ1 (2018) = the cult original, 20,000x max win, neon aesthetics, foundational mechanics. JJ2 (2020) = sequel with a giga jar wild (x500 max multiplier), 50,000x max win, identical format. JJ1 remains preferred by some for its pacing. JJ2 is more geared toward big wins.
How do the multiplier jars work?
Jars are special wilds that appear randomly on the grid. Each jar carries a multiplier (x2 to x100). When a winning cluster includes a jar, its multiplier applies to the win. During Free Spins, jars become sticky, and multipliers accumulate for the duration of the bonus.
Is Jammin' Jars available at real-money casinos?
Yes, at most of the top-rated casinos in our comparison that carry Push Gaming.
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