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A cluster counts when matching symbols touch horizontally or vertically. Diagonal contact does not count. The minimum size varies by game: five in most Play'n GO and Push Gaming titles, three in Moon Princess, nine in Aloha! Cluster Pays. Bigger clusters pay more on a steep scale, so a fifteen-symbol block is worth many times three five-symbol blocks.
Wilds join clusters like any other symbol, and in several games the wild is the whole point: Jammin' Jars uses jar wilds that carry a multiplier and move one space after each cascade, so a jar can sit inside cluster after cluster while its multiplier climbs.
Every game in the ClusterPays lobby removes winning clusters and lets the grid refill. The refill can form a new cluster, which is removed in turn, and the chain runs until the grid settles with no win. Some games attach a meter to the chain. Reactoonz charges a Quantum meter with every removed symbol and releases a feature at each threshold, ending with Gargantoon, a three-by-three wild that splits into smaller wilds over successive cascades.
The chain is why cluster games feel busy. A single stake can produce four or five separate payouts, and the total is what the session is judged on, not any one of them.
Grid | Cells | Minimum cluster | Examples in the lobby | Feel |
5 x 5 | 25 | 3 | Moon Princess, Rise of Olympus | Frequent small clusters, meter-driven bonus |
6 x 5 | 30 | 5 | Bonanza Billion, Cluster Slide | Cascades with multiplier symbols |
6 x 5 | 30 | 9 | Aloha! Cluster Pays | The original, sticky win respins |
7 x 7 | 49 | 5 | Reactoonz, Reactoonz 2 | Meter fills, features stack |
8 x 8 | 64 | 5 | Jammin' Jars, Jammin' Jars 2 | Moving multiplier wilds, big ceilings |
Larger grids form clusters more often but need more symbols to fill them, so the size alone does not set volatility. The bonus rule does. Jammin' Jars on an 8 x 8 grid is more volatile than Moon Princess on 5 x 5 because its wins depend on jars stacking multipliers, not on frequent small clusters.
The two are confused constantly, and ClusterPays keeps them on separate shelves. Sweet Bonanza and Gates of Olympus from Pragmatic Play pay when eight or more matching symbols appear anywhere on the grid, touching or not. That is scatter pays. It cascades like a cluster game and looks like one, but position never matters. In a cluster game, five matching symbols scattered across the grid pay nothing; five touching ones pay. If you switch between the two formats, that rule is the one to keep in mind.
A wild on a grid joins any adjacent cluster, and because it can touch four neighbours at once it can bridge two groups of the same symbol into one large cluster. That bridging is worth more than the substitution: two clusters of five pay as two small wins, while the same ten symbols bridged into one cluster pay on the ten-symbol tier, which is many times more. The games at ClusterPays add wilds in three ways. Reactoonz drops them as a meter feature and as Gargantoon; Jammin' Jars carries them as jars with multipliers; Moon Princess's powers convert symbols into wilds. Watching where a wild lands, in the middle of the grid or on an edge, tells you most of what the spin will do.
Cluster games do not all have free spins, and the ones that do use them differently. Jammin' Jars starts free spins when three jars are on screen and keeps their multipliers for the round, so a round that begins with jars at 4x, 3x and 2x is already valuable. Moon Princess opens free spins after a full grid clear, with the princess powers active throughout. Aloha! Cluster Pays awards free spins by scatter count and adds substitution symbols. Reactoonz has no free spins at all; its features fire from the meter in the base game. ClusterPays marks each game with its bonus type so a player who wants a free spin round is not sent to a game that has none.
NetEnt's 2016 release put the phrase in the name. Six reels, five rows, clusters of nine or more, and a Sticky Win Re-Spin: any cluster of six or more symbols holds in place while the rest of the grid spins again, and keeps holding while the cluster grows. Free spins add substitution symbols that turn into whatever forms the largest cluster. The game is in the ClusterPays lobby as the reference point for everything that followed.
Seven-by-seven grid, clusters of five. The Quantum meter charges with every removed symbol and releases four features in turn, with Gargantoon at the top. RTP 96.51%, maximum win 4,570x.
Eight-by-eight grid, clusters of five, jar wilds with a multiplier that grows by one each time the jar joins a win and moves after each cascade. RTP 96.83%, maximum win 20,000x. Jammin' Jars 2 adds a Giga Jar and raises the ceiling to 50,000x.
Cluster wins on a cascading grid with multiplier symbols that combine at the end of the chain. One of the most opened games in the lobby for players moving over from scatter-pays titles.
Five-by-five grids, clusters of three, and a set of powers that clear or transform symbols to keep the chain going. A full clear of the grid pays a bonus of its own.
Newer cluster titles with sliding and runner mechanics that move symbols between cascades. Both are on the medium shelf.
The sequel replaces the single meter with two, adds electric wilds, and raises the volatility. Same grid, same five-symbol rule.
A single stake in Reactoonz, taken from a demo log at ClusterPays, shows what a cascade chain is worth and where it stops.
The lesson is that a cluster game is played across spins, not within them. The meter is the memory, and a quiet spin that adds six symbols to it is not a wasted spin.
The stake in a cluster game is flat per spin, and the paytable values are multiples of it, so a bankroll rule is easy to state in stakes. Moon Princess and Rise of Olympus, with three-symbol clusters on a small grid, pay on most spins and are comfortable at a hundred stakes. Reactoonz and Bonanza Billion, where the result depends on chain length and meter charges, want two hundred. Jammin' Jars and its sequel, where the ceiling is set by moving multiplier wilds, want three to five hundred, because the sessions between a big jar chain are long and quiet. ClusterPays prints the floor on every game page, next to the maximum win, so the two numbers can be read together.
Every offer at ClusterPays shows its wagering requirement, game weighting and stake cap on the offer page. Cluster games count in full toward wagering unless the page says otherwise. A long cascade chain can move a bonus balance a long way in a few seconds, so the stake cap is the first line to read before opening Jammin' Jars with bonus funds. Free spin awards are tied to a named game at a fixed stake, and winnings from them carry the wagering of the offer they came with. Cashback, where offered, is calculated on net losses over the stated period with its own terms beside it.
Balances are in EUR. Deposits by Visa, Mastercard, Skrill, Neteller, Trustly and paysafecard are credited when the provider confirms them. Withdrawals return to cards, e-wallets or bank transfer; paysafecard cannot receive payouts. Identity and address are verified before the first withdrawal, and e-wallets are released first once that is done, with card and bank transfers following at the receiving bank's speed.
The site runs in a phone browser without an app. Square grids suit portrait screens: the whole seven-by-seven or eight-by-eight board stays visible with the meter beside it, and cascades are easy to follow. Stake controls sit behind a menu icon on small screens, so confirm the stake before the first drop. Balance, bonus progress and limits follow the login between devices.
ClusterPays is for adults of legal gambling age. Deposit limits, loss limits, session reminders, time-outs and self-exclusion are in account settings, with lower limits applying at once and higher ones after a cooling-off period. Cascade chains make time pass quickly; a session reminder is the tool for that. Independent help is available from Gamblers Anonymous (https://www.gamblersanonymous.org).
The help centre at ClusterPays covers the questions grid players ask: why five scattered symbols did not pay, how a meter carries between spins, what a jar multiplier does when it leaves the grid, and how verification and limits work. Anything else goes to the support team by chat or contact form from the account menu; account questions are answered only for the verified holder.
Five in most games, three in Moon Princess and Rise of Olympus, nine in Aloha! Cluster Pays. The paytable states the minimum.
No. Symbols must touch horizontally or vertically.
No. It is scatter pays: eight or more matching symbols anywhere on the grid, touching or not.
Jammin' Jars at 96.83% by default. The in-game panel shows the version running at ClusterPays.
Yes. Every game opens in demo mode without an account.
EUR for accounts, deposits and withdrawals.
Open Reactoonz in demo, watch the meter fill over a dozen cascades, then set a deposit limit and play the grid for real. ClusterPays adds new cluster releases as the studios ship them.
