Jammin' Jars Pokie: A Look at the 8x8 Cluster Game from Push Gaming

Push Gaming released Jammin' Jars in 2018. It's a high-volatility pokie with an 8x8 grid. Instead of traditional paylines, it uses a cluster pays system: you win when five or more matching symbols land adjacent to each other, horizontally or vertically. The theme is a disco dance party with fruit symbols and jam jars. The game has a minimum bet of $0.20 and a maximum bet of $100 per spin. The layout is square, not the usual 5x3, which changes the feel of the game. The jam jars act as wilds and scatters, each carrying its own multiplier that increases with each cascade. This structure is the core of the game's design.

To play Jammin' Jars, first set your bet using the bet selector. The minimum is $0.20 and the maximum is $100 per spin. The game uses an 8x8 grid with cluster pays, so a win is formed when five or more matching symbols land adjacent horizontally or vertically. Winning clusters disappear and new symbols fall, potentially creating further wins in the same spin. The paytable and game info are accessible via the info button, usually next to the bet selector. The spin button starts a round. There is also a bonus buy option that costs 84x your stake; it triggers the free games feature directly. You might use it if you prefer to skip the base game and go straight to the feature, but it's a significant cost.

Given the high volatility, your bankroll needs to handle dry spells. With a $50 session, a sensible bet is around $0.50 per spin, giving you 100 spins. For a $200 session, you could bet $1.00 per spin, giving you 200 spins. The bonus buy costs 84x your stake, so on a $0.50 bet that's $42, which is most of a $50 session. On a $1 bet, it's $84, which is under half of a $200 session. No betting system changes the RTP or the odds. The game's volatility means wins can be infrequent but potentially large. The maximum win is 20,000x your stake, so a $1 bet could return $20,000, but that's rare. Always play within your means.

The key features are cascading cluster pays, jam jars as wilds and scatters, a random rainbow feature, free games, and a bonus buy. Cascading cluster pays mean winning symbols disappear and new ones fall into place, potentially creating more wins in one spin. Each jam jar has its own multiplier, and it increases by +1 with every cascade. The random rainbow feature can add giant fruit symbols to the grid, which can help form larger clusters. If you land three or more jam jars, you trigger free games: you get six spins, and the jam jars stay sticky for the duration. The bonus buy lets you purchase the free games feature directly for 84x your stake.

The default RTP is 96.83%, but there are other versions available: 94.25% and 90.45%. The difference matters. At 96.83%, for every $100 wagered, the theoretical return is $96.83. At 94.25%, it's $94.25, and at 90.45%, it's $90.45. That's a difference of up to $6.38 per $100. The max win is 20,000x your stake. For example, a $1 bet could win $20,000. The game is high volatility, meaning wins are less frequent but can be larger. Always check the RTP version in the game's info panel before you play.

The demo version uses play credits, but the game’s maths and RTP version are the same as the real-money build at the casino where you open it. For a high-volatility game like this, a demo session is useful for getting a feel for how often the jam jar multipliers and free games trigger, and how the bet size affects the pace of your bankroll. You can test bets across the range without risking real money. When you switch to real AUD, the bets are real, so you'll need to consider your bankroll and the minimum and maximum limits. The demo won't tell you which RTP version you'll get for real money, so check the info panel when you play for real.

You can play Jammin' Jars at Just Casino, Lucky Dreams, in AUD. They offer a demo mode, so you can try the game for free before playing with real money. When you play for real, check which RTP version is active in the game's info panel. Remember to play responsibly. If you need help, contact Gambling Help Online at 1800 858 858.

Sugar Rush — Sugar Rush is a 7x7 cluster pays pokie from Pragmatic Play with high volatility and a max win of 5,000x. It shares the cluster mechanic and cascading wins, but has a lower max win and uses multiplier spots instead of jam jar multipliers.

Reactoonz — Reactoonz is a 7x7 cluster pokie from Play'n GO with high volatility and a max win of 4,570x. It features cascading wins and special symbols, similar to Jammin' Jars, but with a different theme and no sticky multipliers.

Big Bamboo — Big Bamboo is from the same studio, Push Gaming, and has high volatility with a max win of 50,000x. It uses a 5x6 grid and features mystery symbols and multipliers, but differs in format and win mechanics.