Jammin' Jars Series: Push Gaming Fruit Slots at Flush

Jammin’ Jars Series: Push Gaming Fruit Slots at Flush

Last Updated: May 2026 | Editorial Team, Flush Casino

The Jammin’ Jars series from Push Gaming occupies a unique position in the high-volatility slot landscape. It was among the first major cluster pays titles to run on an 8x8 grid, which is significantly larger than the 5x5 or 6x5 grids that most cluster pays games use. This grid size changes the dynamics of cluster pays fundamentally: more positions mean larger clusters are possible, tumble chains run longer, and the game can sustain win sequences that feel unlike anything in the genre. The original Jammin’ Jars, released in 2018, was an immediate hit at crypto-friendly casinos and cemented Push Gaming’s reputation for genuinely high-ceiling games. Jammin’ Jars 2, released in 2021, introduced the Hypernova Wild and raised the max win from 20,000x to 50,000x. A third entry, Jammin’ Jars 3, has been referenced in Push Gaming’s pipeline as of the writing of this guide, though release confirmation and specific RTP data were not publicly available as of May 2026. This guide covers the two confirmed entries in full mechanical detail and addresses Jammin’ Jars 3 as a forthcoming title. Flush carries both current Jammin’ Jars games and supports BTC, ETH, USDT, TRX, and SOL deposits for real-money play on all Push Gaming titles.

The Jammin’ Jars Series at a Glance

Game	RTP	Volatility	Max Win	Year	Status
Jammin’ Jars	96.83%	Very High	20,000x	2018	Active
Jammin’ Jars 2	96.4%	Very High	50,000x	2021	Active
Jammin’ Jars 3	TBC	Very High (expected)	TBC	TBC	Unreleased as of May 2026

Jammin’ Jars

Jammin’ Jars is the original and, for many high-volatility players at Flush, still the definitive fruit slot. It runs on an 8x8 grid with cluster pays: winning clusters form when five or more matching fruit symbols connect horizontally or vertically. The grid has 64 positions, which is more than double the 30 positions on a 6x5 scatter pays grid and significantly more than the 49 on a 7x7. This creates substantially more space for large clusters to form and for tumble chains to sustain across multiple consecutive wins.

The symbols in Jammin’ Jars are fruit in jars: red strawberries, purple grapes, pink raspberries, watermelons, oranges, lemons, and cherries. Each fruit has a different value per cluster size. The most valuable symbol is the strawberry, which pays 50x your bet for a cluster of 15 or more (the maximum calculated in the pay table). Smaller clusters scale down proportionally: five strawberries pay 1x, ten strawberries pay 10x, fifteen pay 50x. Lower-value fruits like lemons pay 0.5x for five, scaling to 10x or more for very large clusters.

Cluster sizes on an 8x8 grid can theoretically reach up to 64 if all positions are filled with the same symbol, though realistic maximum cluster sizes tend to run in the 20 to 40 range in productive sequences. The tumble mechanic removes winning clusters and allows new symbols to fall from above, which can continue generating clusters in a single spin. A spin that starts with two small clusters can tumble into a third, fourth, and fifth consecutive win as new symbols fill vacated positions.

The rainbow feature is what elevates Jammin’ Jars from a standard cluster pays game to something genuinely distinctive. During any spin in the base game or bonus, a rainbow can appear at the edge of the grid. The rainbow activates a Wild Jar symbol that slides across the grid in its path, adding a Wild Jar to every column it crosses. Wild Jars substitute for all fruit symbols and remain on the grid for subsequent tumbles, meaning a rainbow event mid-sequence can dramatically extend and amplify an already productive tumble chain.

The free spins bonus triggers when six or more scatter symbols land on the grid in a single spin (including across tumbles in the same spin). The scatter is a musical note symbol. Six or more scatters award eight free spins. During free spins, the rainbow feature appears more frequently than in the base game, and each rainbow also increases the multiplier applied to all wins: the first rainbow applies 1x, the second applies 2x, the third applies 3x, and so on. Each free spin builds on the multiplier established by previous rainbow appearances, creating an accumulating multiplier system across the bonus. By the time four or five rainbows have appeared in a bonus, the multiplier applied to every subsequent win is 4x or 5x on top of the base cluster pays.

The 20,000x max win is reached through the combination of a maximum cluster of the highest-value symbol with accumulated rainbow multipliers and Wild Jar substitutions extending the cluster. This requires a specific convergence of favorable symbol falls and rainbow timing, but it is mechanically achievable and has been recorded in documented play.

At Flush, Jammin’ Jars carries a 96.83% RTP, which is one of the highest RTPs among very high volatility slots in the Flush library. This is genuinely significant: most high-ceiling games sit at 96% to 96.5%. The 96.83% on Jammin’ Jars means players retain more theoretical value per spin before variance has its say. Flush players using BTC and ETH often highlight this RTP as a differentiating factor when comparing Push Gaming titles to Pragmatic Play or Relax Gaming alternatives.

Demo mode is available at Flush for Jammin’ Jars. Because the game does not have a buy-bonus feature (Push Gaming historically did not include this in the original), players learn the mechanics through base game play. This makes extended demo sessions particularly useful for understanding the rainbow feature timing and Wild Jar behavior before committing real funds.

Jammin’ Jars 2

Jammin’ Jars 2, released in 2021, retained the 8x8 grid, cluster pays mechanics, rainbow feature, and tumble system of the original and added the Hypernova Wild: a major new bonus symbol that fundamentally changes what is possible during the free spins round.

The Hypernova Wild is a large Wild symbol that occupies a 3x3 block on the grid (nine positions) rather than a single position. When a Hypernova Wild is present, it substitutes for all fruit symbols across its entire 3x3 footprint, effectively guaranteeing large clusters in any adjacent symbol group. If two Hypernova Wilds appear simultaneously or overlap through grid movement, the cluster amplification becomes dramatic: large fruit clusters form naturally around the expanded substitution area.

During the base game in Jammin’ Jars 2, Hypernova Wilds can appear on the grid and behave like enhanced versions of the Wild Jars introduced by the rainbow in the original. They persist through tumbles, remain in place while new symbols fall, and extend cluster chains significantly. The visual impact of a Hypernova Wild landing is immediately apparent: the 3x3 block of Wild positions surrounded by matching fruit symbols creates clusters that span large fractions of the 64-position grid.

The free spins bonus in Jammin’ Jars 2 triggers similarly to the original: six or more scatter symbols on the grid in a single spin (including across tumbles) award eight free spins. The rainbow feature and accumulating multiplier remain central to the bonus: each rainbow increases the active multiplier by 1x and applies it to all subsequent wins. The Hypernova Wild appears more frequently during free spins than in the base game, and its 3x3 footprint combines with accumulated multipliers to create the conditions for the 50,000x maximum win.

The 50,000x ceiling in Jammin’ Jars 2 compared to 20,000x in the original is the direct result of Hypernova Wild cluster amplification combined with the same rainbow multiplier accumulation from the first game. A Hypernova Wild landing within a high-multiplier phase of a productive free spins sequence can generate a cluster win that would be geometrically impossible in the original, where single-position Wild Jars cap the cluster extension.

The RTP of Jammin’ Jars 2 is 96.4%, notably lower than the original’s 96.83%. This is the most significant trade-off between the two games from a player value perspective. The 0.43% RTP difference is real and noticeable over large sample sizes. Players at Flush who prioritize theoretical return over maximum win ceiling will find the original more favorable. Players who prioritize the 50,000x ceiling and the Hypernova Wild mechanic will accept the lower RTP as the cost of the upgrade.

At Flush, Jammin’ Jars 2 is available in demo and real-money modes. Players depositing ETH, BTC, USDT, TRX, or SOL can access both games from the same Flush account with identical navigation. The bet sizing range on Jammin’ Jars 2 at Flush accommodates low-stake play starting at around 0.20 per spin and extends to high-roller ranges, matching the original’s accessibility profile.

Jammin’ Jars 3

As of May 2026, Jammin’ Jars 3 has not been officially released. Push Gaming has continued developing high-volatility cluster pays titles, and a third Jammin’ Jars entry has been anticipated by the series fanbase given the success of the first two entries. However, specific mechanical details, confirmed RTP, max win, and release date were not publicly available from Push Gaming at the time this guide was written.

Based on the series trajectory, a third entry would be expected to retain the 8x8 grid and cluster pays foundation while introducing a new mechanical element beyond the Hypernova Wild, likely addressing the max win ceiling or modifying the rainbow multiplier accumulation system to create a higher theoretical peak. The very high volatility designation is near-certain based on the series’ consistent positioning.

Flush will update this guide and the Jammin’ Jars 3 game page when the title is released and full specifications are available. Players who want to be notified when new Push Gaming titles arrive at Flush can monitor the Flush new games section, which is updated as new titles are added to the library. Jammin’ Jars 3 will be reviewed and added to this guide at Flush as soon as it becomes available.

How the Series Evolved

The Jammin’ Jars series evolved through a single consistent principle: make the Wild mechanism bigger. The original introduced the Wild Jar delivered by the rainbow feature, a single-position Wild symbol that could appear in one or several grid positions depending on how many rainbow events occurred. This was already a significant cluster pays Wild relative to games that used standard single-symbol Wilds without the rainbow delivery mechanism.

Jammin’ Jars 2 answered the question of what comes after a single-position Wild by introducing the Hypernova Wild with a 3x3 footprint. Nine positions of Wild substitution represents a qualitative change in cluster formation potential, not just a quantitative improvement. The 50,000x max win versus the original’s 20,000x is a direct measure of what 3x3 Wild coverage enables when combined with rainbow multiplier accumulation.

The series also became iconic for high-volatility players because the 8x8 grid created a playing experience that looked different from other cluster pays games. The larger grid makes individual clusters visually dramatic when they span a significant portion of the 64 positions. A cluster of 30 matching symbols filling almost half the grid, tumbling into cascading new wins, with rainbow multipliers building across the bonus, is genuinely different in feel from the same theoretical payout on a smaller grid. The game communicates its wins vividly, which is part of why it built the audience it did among high-volatility players at Flush and across the broader online casino community.

Push Gaming’s release pace for the Jammin’ Jars series has been measured rather than rapid, with the original in 2018 and the sequel in 2021. This three-year gap suggests the developer waits for a genuinely new mechanic before releasing a sequel rather than publishing incremental updates on an annual schedule. This pattern gives players confidence that a third entry, when it arrives, will introduce something materially new rather than simply repackaging the Hypernova Wild with different symbols.

Which Jammin’ Jars Game Has the Best RTP?

Game	RTP	Max Win
Jammin’ Jars	96.83%	20,000x
Jammin’ Jars 2	96.4%	50,000x
Jammin’ Jars 3	TBC	TBC

The RTP comparison between the first two Jammin’ Jars entries presents a genuine trade-off rather than the negligible differences seen in the Gates of Olympus and Sweet Bonanza series. The 0.43% difference between 96.83% and 96.4% is meaningful over large spin volumes. At 1,000 spins of 1.00 each, the theoretical return difference is 4.30 in favor of the original. At 10,000 spins, the difference is 43.00. These are theoretical figures across large samples, but they represent a real difference in player value.

For players at Flush who prioritize long-term theoretical value, Jammin’ Jars 1 at 96.83% is the clearest choice in the series. For players who want the Hypernova Wild mechanics and the 50,000x ceiling, Jammin’ Jars 2 is the stronger game despite the lower RTP. Flush provides both at comparable bet sizes, so players can make the choice based on personal preference rather than accessibility constraints.

The recommendation from Flush for new series players is to begin with Jammin’ Jars in demo mode. The original’s mechanics are foundational: understanding how the rainbow feature delivers Wild Jars, how multipliers accumulate across the bonus, and how cluster sizes scale on the 8x8 grid is essential context before the Hypernova Wild’s additional mechanics make complete sense in Jammin’ Jars 2.

Playing the Jammin’ Jars Series at Flush

Both available Jammin’ Jars games are accessible at Flush in demo and real-money modes. Flush accepts BTC, ETH, USDT, TRX, and SOL for deposits, and all balances apply equally to both Jammin’ Jars titles and the rest of the Push Gaming library at Flush.

Neither current Jammin’ Jars entry includes a Bonus Buy feature, which means players must trigger the free spins bonus organically during base game play. This makes bankroll planning especially important: players should budget for extended base game sessions. At Flush, the minimum stake on both Jammin’ Jars titles starts around 0.20 per spin, making it practical to carry many hundreds of spins in a session at low stakes.

The high RTP of Jammin’ Jars (96.83%) combined with the absence of a Bonus Buy means players who prefer to play long sessions without skipping to the bonus will find the theoretical value relatively favorable compared to the broader very high volatility slot market. Players who specifically want Bonus Buy access should look to other titles in the Flush library, as Push Gaming has not added this feature to the Jammin’ Jars series as of this writing.

All Push Gaming titles at Flush are certified RNG games with independently audited RTPs. Flush displays game information including RTP and volatility rating for both Jammin’ Jars entries in their respective information panels. For players depositing SOL or TRX at Flush, the game loading experience and bet sizing interface are identical to BTC and ETH-funded sessions.

The Rainbow Feature Explained

The rainbow feature is the defining mechanic of the Jammin’ Jars series, the element that sets both games apart from every other cluster pays slot and the primary reason Jammin’ Jars built the following it did at Flush and across the broader crypto casino community.

The rainbow can trigger at any point during a spin in the base game or during free spins. It is not tied to scatter landings or any specific symbol combination: it activates as a random overlay event, which means its appearance is always a surprise and always changes the state of the board immediately. When it fires, a rainbow arc appears at one edge of the 8x8 grid and sweeps across it in one direction, either horizontally across a full row or vertically across a full column. Every symbol in the rainbow’s path is converted to a Wild Jar: a special symbol that substitutes for all fruit types and carries its own individual multiplier value assigned at the moment of conversion.

A horizontal rainbow sweep across one of the 8 rows converts all 8 symbols in that row to Wild Jars simultaneously. A vertical sweep across one of the 8 columns does the same for the 8 symbols in that column. Each converted Wild Jar receives its own multiplier, typically ranging from 2x to 6x but occasionally higher in the base game and free spins. The converted Wild Jars remain on the grid for all subsequent cascades within the same spin, meaning every tumble event that follows benefits from the presence of those wild substitutes and their individual multipliers.

When multiple Wild Jars from a rainbow event contribute to the same winning cluster, their multipliers combine multiplicatively rather than additively. Two 3x Wild Jars in the same cluster produce a 9x combined multiplier on that cluster’s base payout. Three 4x Wild Jars in the same cluster produce 64x. Four 5x Wild Jars produce 625x. This exponential growth is the mechanism behind the 20,000x max win in Jammin’ Jars: it does not require a single high-value symbol combination so much as the right number of high-multiplier Wild Jars converging in a single cluster formation.

During free spins, the rainbow feature operates on a more frequent trigger rate than in the base game. Push Gaming has not disclosed the exact probability differential, but observed play at Flush and across the broader player community consistently shows rainbow events firing multiple times per free-spins feature in productive sessions. More significantly, each rainbow event during free spins contributes to a cumulative multiplier that applies on top of the Wild Jar multipliers: the first rainbow in the bonus applies a 1x base multiplier to all wins, the second rainbow raises it to 2x, the third to 3x, and so on. By the time four or five rainbows have appeared in a feature, every win in the feature carries a 4x or 5x base multiplier before any Wild Jar multiplier compounding is calculated. The combination of accumulated base multiplier and Wild Jar cluster multipliers is what creates the most extreme feature outcomes at Flush.

The rainbow can add up to 8 Wild Jars to the grid in a single event, and across multiple rainbow events in the same free-spins feature, the grid can accumulate 16, 24, or more Wild Jars from successive sweeps. When two rainbow sweeps cross the same cell (one horizontal, one vertical), that cell becomes a Wild Jar from both events, which does not double the multiplier on that specific cell but does mean the cell participated in both conversions and its multiplier applies to any cluster touching it. A free-spins feature containing three or four rainbow events is the context in which the 20,000x ceiling becomes a realistic target rather than an abstract theoretical figure. Flush players who have seen this configuration in demo mode understand why the rainbow feature is the heart of the Jammin’ Jars series.

The 8x8 Grid Mathematics

The 8x8 grid in Jammin’ Jars is not a cosmetic choice: it is a mathematical decision that changes every aspect of how the game plays relative to cluster pays titles on smaller grids. Understanding the grid mathematics at Flush gives players a clearer picture of why both Jammin’ Jars games feel different from other high-volatility cluster titles.

A standard 5x5 cluster grid has 25 positions. A standard 6x5 scatter-pays grid has 30. A 7x7 grid has 49. The 8x8 grid has 64 positions, which is more than twice the positions on a 5x5 and 14 more than a 7x7. This scale difference has non-linear effects on cluster formation probability.

On a 25-position grid with seven symbol types, the expected number of any single symbol type across the grid (assuming uniform distribution) is approximately 3.6. Forming a cluster of 5 matching symbols requires a concentration of 5 from a baseline of 3.6, meaning the cluster requires above-average density of that symbol type in adjacent positions. On the 8x8 grid with 64 positions, the expected count of any symbol type is approximately 9.1. Forming a cluster of 5 matching symbols on the 8x8 grid requires a concentration of just 55% of the expected symbol count, which is far more probable than the equivalent on a 25-position grid. This is why both Jammin’ Jars games have a noticeable base-game win frequency: clusters of 5 to 10 symbols form regularly because the grid has enough positions for multiple symbol types to reach clustering density simultaneously.

The pay structure for both Jammin’ Jars games scales steeply with cluster size, which is where the large grid’s secondary effect matters. On a 25-position grid, a cluster of 15 symbols represents 60% grid coverage and is extremely rare because filling 60% of a small grid with one symbol type requires exceptional symbol concentration. On the 8x8 grid, a cluster of 15 symbols represents only 23% coverage, which is achievable within normal variance. This means the pay table entries at 12, 15, and 20+ symbols are realistic targets rather than theoretical maximums, and they pay at a multiple of the small-cluster rates: a strawberry cluster of 15 at Flush pays 50x the bet compared to 1x for a cluster of 5, and clusters larger than 15 scale further.

Cascade chain length is directly affected by grid size. On a 5x5 grid, a winning cluster of 10 symbols removes 40% of the grid in one cascade, and the symbols falling to replace them may or may not form another cluster. The replacement set is small and the probability of cascading drops quickly after the first event. On the 8x8 grid, a winning cluster of 10 symbols removes only 15.6% of the grid, leaving 54 positions still populated. The new symbols falling to fill the 10 vacated positions arrive into a context where 54 other symbols are already present and forming their own proximity relationships, which gives new cascade formations a much richer environment to arise from. This is why both Jammin’ Jars games consistently produce cascade chains of 4, 5, 6, or more events during productive base-game spins: the large grid sustains the cascade environment.

The cluster size thresholds that matter for payout purposes in both Jammin’ Jars games are 5, 8, 12, 15, and 20 or more symbols. At each threshold, the payout per cluster for a given symbol type increases substantially. The 8x8 grid makes the 12 and 15-symbol thresholds reachable in normal play rather than exceptional-luck events, and the 20-plus-symbol threshold occurs in productive sessions with Wild Jar assistance. Clusters above 30 symbols, representing nearly half the grid, are rare but documented and represent the category of win where Wild Jar multiplier compounding on a very large cluster produces four and five-digit multiples at Flush.

Jammin’ Jars at Flush: RTP, Bankroll, and Crypto Play

Flush carries both Jammin’ Jars games with the following certified RTPs: Jammin’ Jars at 96.83% and Jammin’ Jars 2 at 96.4%. These are audited figures from Push Gaming’s certified RNG implementation, and Flush displays both in the respective game information panels before any session begins.

In practical terms for a 1,000-spin session at $0.20 per spin: Jammin’ Jars at 96.83% produces a theoretical expected loss of $6.34 (1.17% house edge on $200 wagered x 1,000 spins = $3.34 theoretical loss difference vs JJ2). Jammin’ Jars 2 at 96.4% produces a theoretical expected loss of $7.20. The difference of $0.86 over 1,000 spins at $0.20 is negligible within any single session’s variance but real over thousands of spins.

For bankroll planning at Flush, a 300-unit session (meaning 300 times your stake per spin in reserve) is the minimum recommended buffer for either Jammin’ Jars game at any stake level. At $0.20 per spin, that is a $60 session bankroll. At $0.50 per spin, it is $150. This 300-unit buffer provides enough capital to survive extended base-game droughts between free-spins triggers at average trigger frequency (approximately 1 per 100 to 150 spins), meaning a 300-unit bankroll at $0.20 per spin covers 300 spins at minimum: roughly 2 expected free-spins triggers before the buffer is depleted if features produce near-average returns.

Flush accepts BTC, ETH, USDT, TRX, and SOL for deposits, all of which fund your Flush balance with no conversion required at the game layer. BTC deposits at Flush allow fractional stake sizing that is particularly useful for players who want to run extended sessions at the $0.10 per spin minimum, stretching a small BTC deposit across hundreds of base-game spins. ETH deposits at Flush process quickly and are well-suited to medium-stake sessions in the $0.20 to $0.50 per spin range. USDT deposits are stable-value and allow players to budget sessions in fiat-equivalent terms, which is practical for a Very High volatility title where session variance can be substantial. TRX deposits on the TRON network carry minimal network fees and are practical for frequent small top-ups during extended Jammin’ Jars sessions. SOL deposits at Flush confirm in under a second and are the fastest funding option available.

Demo mode for both Jammin’ Jars games is accessible at Flush without registration or deposit. Running demo sessions until you have seen 10 to 15 free-spins features in each game is the recommended preparation before committing real BTC, ETH, USDT, TRX, or SOL to either title. The rainbow multiplier accumulation in particular is difficult to appreciate from a description alone: seeing it build through three or four rainbow events in demo free spins and watching the combined effect on subsequent cluster pays is the most efficient way to understand why both Jammin’ Jars games carry 20,000x and 50,000x theoretical ceilings respectively.

FAQ

How does the 8x8 grid change cluster pays mechanics in Jammin’ Jars?

The 8x8 grid in Jammin’ Jars has 64 positions, compared to 49 on a 7x7 grid or 30 on a 6x5 grid. More positions mean larger clusters can form: a cluster that might max out at 15 or 20 on a smaller grid can reach 30 or 40 on the 8x8. Tumble chains also run longer because more space is available for cascading symbol falls to generate new clusters. The larger grid makes individual winning events visually bigger and gives the rainbow feature and Wild Jars more room to connect distant matching symbols.

What is the rainbow feature in Jammin’ Jars?

The rainbow feature activates randomly during base game and free spins spins. A rainbow appears at the edge of the grid and sweeps across it, depositing a Wild Jar symbol in each column it passes through. Wild Jars substitute for all fruit symbols and remain in place through subsequent tumbles in the same spin, extending cluster chains. During free spins, each rainbow appearance also increases the active multiplier by 1x, building a cumulative multiplier that applies to all wins in later free spins.

What is the Hypernova Wild in Jammin’ Jars 2?

The Hypernova Wild is a 3x3 Wild symbol introduced in Jammin’ Jars 2. It occupies nine grid positions simultaneously and substitutes for all fruit symbols across its entire footprint. This creates immediate large clusters in adjacent fruit groups. The Hypernova Wild persists through tumbles and appears more frequently during free spins than in the base game. Its 3x3 coverage is the primary mechanical reason Jammin’ Jars 2’s max win reaches 50,000x compared to 20,000x in the original.

Can I play Jammin’ Jars with crypto at Flush?

Yes. Flush accepts BTC, ETH, USDT, TRX, and SOL deposits, and all balances apply to both Jammin’ Jars titles in the library. Deposits are processed on-chain and credited to your Flush balance for immediate use. Both games support the same minimum and maximum bet range, with minimum stakes starting around 0.20 per spin at Flush.

Is Jammin’ Jars 3 available at Flush?

As of May 2026, Jammin’ Jars 3 has not been officially released by Push Gaming. No confirmed RTP, grid structure, or release date was publicly available at the time of this guide’s publication. Flush will add Jammin’ Jars 3 to the library and update this series guide when the game is released and full specifications are confirmed by Push Gaming.

About the Author

Editorial team at Flush Casino reviews and compares online casino games with a focus on crypto gambling, mechanical transparency, and player-oriented analysis. Our series guides cover every entry so players can make informed decisions about where to start and how the franchise evolved. All data in our series reviews comes from official RTP documentation and direct gameplay testing.

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Jammin' Jars Series: Push Gaming Fruit Slots at Flush