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Each game page at Cluster Pays Slots leads with the same four figures, and the table below lists them for the lobby's core titles.
Game | Studio | Grid | Min cluster | Max win | RTP (default) |
Reactoonz | Play'n GO | 7 x 7 | 5 | 4,570x | 96.51% |
Reactoonz 2 | Play'n GO | 7 x 7 | 5 | 5,083x | 96.2% |
Moon Princess | Play'n GO | 5 x 5 | 3 | 5,000x | 96.5% |
Jammin' Jars | Push Gaming | 8 x 8 | 5 | 20,000x | 96.83% |
Jammin' Jars 2 | Push Gaming | 8 x 8 | 5 | 50,000x | 96.4% |
Aloha! Cluster Pays | NetEnt | 6 x 5 | 9 | see paytable | 96.42% |
Cluster Slide | ELK Studios | see paytable | 5 | see paytable | see paytable |
Bonanza Billion | BGaming | cascading grid | 5 | see paytable | see paytable |
RTP figures are studio defaults. The in-game information panel shows the version running at Cluster Pays Slots, and where a studio ships several versions the difference can be more than a percentage point.
Play'n GO built the most played cluster games by adding memory to the grid. In Reactoonz every removed symbol charges the Quantum meter, 25 per charge, and each charge fires a feature: wilds added, a symbol type removed, a random symbol transformed. Four charges bring Gargantoon, a three-by-three wild that splits across cascades. Reactoonz 2 doubles the meters and adds electric wilds. Moon Princess shrinks the grid to five-by-five, drops the minimum cluster to three, and runs three princess meters that each release a power; a full grid clear pays a bonus and opens free spins. Rise of Olympus follows the same design with three gods in place of three princesses.
The house style is steady base-game action with the big result at the end of a long chain. Cluster Pays Slots ranks Play'n GO first for players who want the grid to do something on most spins.
Jammin' Jars is the cluster game with the highest ceiling in the lobby's first generation, and the ceiling comes from one symbol. The jar is a wild with a multiplier that starts at 1x, rises by one each time the jar is part of a win, and moves one space in a random direction after each cascade. Three jars on screen start free spins in which the multipliers are carried over and keep growing. A rainbow feature on non-winning spins adds fruit symbols to keep the chain alive. Jammin' Jars 2 keeps the jars, adds a Giga Jar that collects across spins, and raises the maximum to 50,000x.
The house style is long quiet runs and rare, large chains. Cluster Pays Slots ranks Push Gaming first for ceiling and lists a stake floor of three to five hundred beside both games.
Aloha! Cluster Pays, released in 2016, gave the format its name. Six reels, five rows, and a nine-symbol minimum that looks steep until the Sticky Win Re-Spin is understood: any cluster of six or more holds in place while the other positions spin again, and keeps holding while it grows, until no new symbol joins. Free spins add substitution symbols that turn into whatever forms the largest cluster. The game is in the lobby as the reference point, and it still plays as a complete design rather than a museum piece.
ELK Studios' Cluster Slide moves symbols between cascades so that clusters form from sideways motion as well as from drops. BGaming's Bonanza Billion keeps multiplier symbols on screen through a chain and adds them together at the end, then applies the total to the spin's winnings, which gives a long chain with several multiplier symbols a very different value from a short one. Both sit on the medium shelf at Cluster Pays Slots and both are among the most opened games by players arriving from scatter-pays titles.
The most opened cluster game in the lobby. Seven-by-seven, five-symbol clusters, Quantum meter at 25 symbols per charge, Gargantoon at four charges. Steady base game, big result at the end of a long chain. Two hundred stakes is the floor.
Eight-by-eight, five-symbol clusters, jar wilds with growing, moving multipliers, free spins at three jars. Long quiet runs and a 20,000x ceiling. Three to five hundred stakes.
Five-by-five, three-symbol clusters, three princess meters, bonus on a full clear. Wins on most spins and a bonus within a normal session. A hundred stakes.
The original's jars plus a Giga Jar that collects across spins and drops as a large multiplier wild. Quieter base game, 50,000x ceiling. Five hundred stakes.
Two meters, electric wilds, and a larger top feature than the original. A shelf above Reactoonz, at three hundred stakes.
Six-by-five, nine-symbol clusters, Sticky Win Re-Spins that hold a growing cluster while the rest of the grid spins. The origin of the format and a medium-shelf game at two hundred stakes.
Grid size and minimum cluster set how often something pays; maximum win and RTP set what a session can reach and what it returns over time. A small grid with a three-symbol minimum and a moderate maximum, Moon Princess, pays often and reaches a modest ceiling. A large grid with a five-symbol minimum and a very high maximum, Jammin' Jars 2, pays rarely and reaches far. RTP is the number that changes least between them, and it is the one that changes between casinos, which is why Cluster Pays Slots shows the running version in the game panel rather than only the studio default.
The order at Cluster Pays Slots is not fixed. A studio ships a new grid game, the four numbers are entered, a two-hundred-spin demo log is run, and the game takes the shelf its low point and ceiling call for. A sequel can move its studio up or down: Reactoonz 2 moved Play'n GO's top shelf a step higher, and Jammin' Jars 2 confirmed Push Gaming at the top of the ceiling column. A studio can also lose its place. When a game's RTP version at the casino is changed, the game page is updated the same day and the ranking is re-checked, because a point of RTP is worth more to a player than any theme. The date of the last change is printed on every game page.
Cluster games cluster around a few themes, and knowing them helps when the lobby is searched by look rather than by studio. Candy and fruit dominate: Jammin' Jars, Sweet Alchemy, Cluster Slide's fruit set. Space and creatures: Reactoonz and its sequel. Myth: Moon Princess, Rise of Olympus. Tropical: Aloha! Cluster Pays. The theme says nothing about the maths; the four numbers do.
Two formats sit next to cluster pays on the lobby and are often mistaken for it. Scatter pays, used by Sweet Bonanza and Gates of Olympus, pays for eight or more matching symbols anywhere on the grid, touching or not. Ways, used by Megaways games, pays for matching symbols on adjacent reels from the left, whatever the row. A cluster pays slot needs adjacency on a grid and nothing else. Cluster Pays Slots keeps the three on separate shelves.
Format | Adjacency required | Grid or reels | Examples |
Cluster pays | Yes, side to side | Grid | Reactoonz, Jammin' Jars |
Scatter pays | No | Grid | Sweet Bonanza, Gates of Olympus |
Ways | Adjacent reels, any row | Reels | Bonanza, Book Of Cats Megaways |
Every promotion is published with its wagering requirement, game weighting and stake cap while the bonus is active. Cluster games count in full toward wagering unless the offer page says otherwise. A jar chain in Jammin' Jars can move a bonus balance far in a single spin, so the stake cap is the line to read first. Free spin awards are tied to a named game at a fixed stake, and their winnings carry the offer's wagering. Cashback, where offered, is calculated on net losses over the stated period with its own terms alongside; none of it changes a game's RTP.
Balances are in EUR. Deposits by Visa, Mastercard, Skrill, Neteller, Trustly and paysafecard are credited on confirmation. Withdrawals return to cards, e-wallets or bank transfer after identity and address verification; e-wallets are released first, and paysafecard cannot receive payouts. A document uploaded at sign-up means the first withdrawal is not held for checks.
The lobby runs in any phone browser without an app. Square grids fit portrait screens, with the meter or jar counter beside the board, and cascades are easy to follow at phone size. Stake and paytable controls sit behind a menu icon; confirm the stake before the first drop. Balance, bonus progress and limits follow the login between devices.
Cluster Pays Slots is for adults of legal gambling age. Deposit limits, loss limits, session reminders, time-outs and self-exclusion are in account settings; a lower limit applies at once, a higher one after a cooling-off period. Cascade chains compress time, and a session reminder is the tool for that. Independent help is available from Gamblers Anonymous (https://www.gamblersanonymous.org).
The help centre is arranged by studio, so a question about a Play'n GO meter sits beside a question about a Push Gaming jar. Verification, withdrawals, limits and bonus terms have their own pages. The support team is reached by chat or contact form from the account menu, and account matters are discussed only with the verified holder; a limit reduction or self-exclusion is applied at once.
Play'n GO for steady grid action with a meter, Push Gaming for the highest ceilings. NetEnt made the first one.
Five in most games. Three in Moon Princess and Rise of Olympus, nine in Aloha! Cluster Pays.
No. It is scatter pays and sits on a separate shelf.
Jammin' Jars 2 at 50,000x the stake.
Yes, without an account and at the same RTP version as real play.
EUR throughout.
Pick a studio, open its top game in demo, and watch the feature that studio is known for fire once before you deposit. Cluster Pays Slots updates the ranking as new cluster titles arrive.
