Jammin' Jars

What these figures mean for Jammin' Jars

Jammin' Jars is published with two return figures, 96.83% and 94.25%, and Push Gaming's own page adds a sentence that matters more than either number: the RTP may vary per casino, and the figure in force is shown in the user panel and on the loading screen. In plain words, the game you open is one of two configurations, and it will tell you which one if you look. Most slot pages never get that far.

The distance between the two settings is 2.58 percentage points. Expressed as a house edge, the higher build keeps 3.17% of what you stake and the lower build keeps 5.75%, so the cheaper version of the game costs you roughly 1.8 times as much per spin as the better one. On a £1 stake that is about 3.2p against about 5.8p. Over a thousand spins — not an unusual evening for a cascading game — the expected cost is about £31.70 on the 96.83% build and about £57.50 on the 94.25% one, a gap of roughly £26 for an identical-looking session.

That gap is real money, but it is worth setting beside the other studios in this catalogue, because Push's structure is noticeably tighter than theirs. Gemix, a Play'n GO game that shares the exact 96.83% headline, is certified in five builds whose lowest is 84.9%. The four Hacksaw titles here all bottom out between 88.28% and 88.42%. Push publishes a floor about two and a half points down rather than eight or twelve. If you have to play at a casino that runs the lower configuration, this is one of the milder penalties on the site; if you can choose, the higher one is still worth seeking out.

The ceiling deserves a careful reading. Push does not call 19,998.5x a maximum win. Its page labels it the highest observed win, and the half-multiple at the end gives away what kind of number it is: not a round cap written into the rules, but a result that has actually been recorded. The page does not say whether it was recorded in live play or in the studio's own testing. Either way, it is neither a promise that nothing larger can happen nor a statement of how rare such an outcome is — there is no probability attached, no one-in-N, nothing like the odds Nolimit City prints for its games. On a £1 spin it describes almost £20,000. How often anything like it arrives is unknown, and we are not going to guess.

Mechanically the game is built around one symbol doing two jobs. The jam jar is both the wild and the scatter, it carries its own multiplier starting at 1x, and that multiplier applies to every win the jar takes part in. Three or more jars anywhere open the free games. Wins come from groups of five or more matching fruit on an 8x8 grid — sixty-four positions — which then clear so that new symbols can fall in. Put together, that tells you where the money in this game is concentrated: in spins where several jars land together and keep contributing across successive cascades. A session without them is mostly small groups of fruit. The one exception is the rainbow feature, which the studio says triggers at random and drops oversized fruit onto the board that can burst into wins. Because it needs no particular symbols to land, it is the one route to a sizeable result described on the page that does not depend on the jars. The studio rates the volatility as high, which fits that shape, though it is a label on Push's own scale rather than a figure you can compare across studios.

Push also lists a bonus buy for this title. Whether a particular lobby offers it is a separate question from whether the studio has built it, and the studio page says nothing about what a bought feature costs or what return it carries. Treat the option, if you see it, as something whose maths you do not know.

What to check before you play is therefore short and specific. Open the game, wait for the loading screen or open the user panel, and read the RTP. If it says 96.83%, you have the better of the two configurations Push publishes. If it says 94.25%, you are paying about 1.8 times as much per spin for the same grid, the same jars and the same 19,998.5x record. If it says something else entirely, the casino is running a version that does not appear on the studio's page, and that is worth a question to support before you deposit.

The fair summary of Jammin' Jars on published evidence: a two-setting game with an unusually narrow gap between its settings, a ceiling the studio honestly describes as observed rather than guaranteed, and no published odds for anything. The arithmetic of the two builds is the most useful thing you can take into the lobby, and the game itself hands you the means to check it.

The RTP you get depends on the casino

Push Gaming publishes 2 different RTP builds of this game and each casino chooses which one to run. Most review sites print a single number; these are all the builds the studio publishes for Jammin' Jars, highest first. Push Gaming names no default among them, so the figure at the top of this page is simply the highest it publishes.

On £100 of turnover the gap between the highest and lowest build here is £2.58. A casino is not obliged to tell you which build it runs, so treat any single RTP figure — including ours — as the best case until you have checked the game's own info screen in the lobby.

How Jammin' Jars compares with the rest of our catalogue

Against every other game here whose studio publishes its maths.

Volatility as the studio states it — what the index measures.