Reactoonz 100

Reactoonz 100 is a cluster pays slot from Play’n GO, released on 16 October 2025. It returns 94.2% at high volatility and takes bets from 0.10 to 100. The top prize is 10,000x the bet. It is the enlarged edition of the studio’s long-running alien series, and the number in the title is the point: there are far more positions on this grid than on the original.

One-Eyed Aliens In Deep Space

The grid floats against a purple starfield with a ringed planet on one side and a moon on the other. There is no reel frame at all – the symbols simply sit in space. A small flying saucer hovers on the left and a glass jar containing a startled alien stands on the right; both carry the current multiplier.

The symbols are the Reactoonz cast: four premium aliens with single eyes and horns in pink, orange, blue and green, and four low aliens in purple, yellow, red and green. They are drawn as soft gel blobs, and they wobble.

Clusters, Not Lines

There are no paylines and no ways. Symbols pay when enough of the same kind touch each other, and the paytable is banded by cluster size rather than by reel position. At a bet of 100.00 the top symbol pays:

15 or more – 10,000.00
12 or more – 4,000.00
10 or more – 2,000.00
9 – 800.00
8 – 500.00
7 – 300.00
6 – 200.00
5 – 100.00

Eight separate bands, starting at five and topping out at fifteen or more, is a wider ladder than most cluster games use – and it is the clearest evidence of how large the grid is. On a standard 7x7 board, clusters of fifteen are rare enough not to need their own tier.

The Other Seven Symbols

The premiums step down in a clean pattern. At the same 100.00 bet, for a cluster of fifteen or more:

Pink alien – 10,000.00, or 100x the bet
Orange alien – 4,000.00, or 40x
Blue alien – 2,000.00, or 20x
Green alien – 1,000.00, or 10x

The four low aliens are far flatter, running from around 20.00 for five up to about 150.00 for fifteen or more – between a fifth and one and a half times the stake. On this game the low symbols genuinely are filler; the pink alien is where the money is.

The Multiplier Climbs

Both the saucer and the jar carry a number, and it moves. Our screenshots caught it at x1 early in a spin, then x9, then x20 as the cascades continued.

That progression is the engine of the whole game. Winning clusters vanish, new symbols drop in, and every cascade pushes the multiplier up – so a chain that starts with a 10.00 win can end somewhere completely different. Our x9 spin was worth 403.33 at a 100.00 bet, built on a cluster paying 100.00 before the multiplier touched it.

Demolition

The feature that interrupted our session announces itself in yellow capitals over a glowing orb: DEMOLITION. It arrives with the multiplier already at x20 on both the saucer and the jar, and the spin paid 600.00 – six times the stake.

Slot catalogues list random wilds, a mega symbol (3x3), substitution symbols and both a fixed and a random multiplier among the features, so Demolition is one of several named effects the game can fire. The pattern is familiar from the series: the base grid is quiet, and the character features do the work.

Two Multiplier Displays, Not One

Worth noticing that the number appears in two places: on the flying saucer to the left of the grid and on the glass jar to the right, and in our screenshots both always showed the same value – x9 on both, then x20 on both.

On a grid this wide that redundancy is a sensible piece of design rather than clutter. Whichever side of the screen your eye happens to be on when a cascade chain fires, the multiplier is there without having to look away from the action.

Cascades Are The Whole Game

It is worth spelling out how the pieces connect, because the paytable alone makes the game look worse than it is. A cluster pays, those symbols vanish, new ones drop into the gap, and the multiplier steps up. If the new arrangement forms another cluster, it pays at the higher multiplier, and the chain continues.

That is why our 403.33 spin is more informative than any single paytable entry: the underlying cluster was worth 100.00, and the x9 on the meter turned it into four times that. A chain that reaches x20, as the Demolition spin did, is doing the same arithmetic again.

A 94.2% Return

That figure is low, and it deserves to be flagged rather than buried. Most Play’n GO releases sit at 96%; this one gives back nearly two points less. The catalogues also flag it as an RTP range, so individual casinos may be running something lower still.

Combined with high volatility and a cluster engine, it describes a demanding game: long stretches where clusters of five pay a fifth of the stake, punctuated by cascade chains where the multiplier does something dramatic. The 10,000x ceiling exists, but the arithmetic to reach it is severe – the biggest single cluster pays 100x, so the remaining hundredfold has to come from multipliers and chains.

A Bet Ladder, Not A Spinner

Play’n GO puts the stake selector under the grid as five fixed buttons – 10.00, 20.00, 40.00, 50.00 and 100.00 – with the chosen one highlighted. Since the paytable is printed in cash at the selected level, changing the button changes every number on the information screen with it.

What The Bet Changes

Everything scales with the stake. Our screenshots were taken at the 100 maximum. At the 0.10 minimum a fifteen-strong pink cluster pays 10.00 and a five-strong purple one pays two cents; the multiples – 100x for the best cluster, 10,000x at the ceiling – are unchanged.

More From Play’n GO

Play’n GO has had a busy year. Bubblin’ Riches arrived a day before this one with 4,096 ways instead of clusters, Cursed Moon Power Collection builds its multiplier through a level meter, and Static Nightmare Abyssways grows its reels to 46,656 ways.

Who It Is For

Reactoonz 100 is for players who already know the series and want more of it. The eight-band paytable rewards the big clusters a larger grid makes possible, the multiplier on the saucer and the jar gives every cascade chain a visible stake, and Demolition and its siblings keep the screen busy. The caveat is the return: at 94.2% and flagged as a range, this is one of the more expensive games on the site to sit at, and the gap between a 100x cluster and a 10,000x ceiling tells you how much of the potential lives in the multipliers. All six casinos we checked carry it.

You can try this game on 7gold Online Casino. There’s a unique casino bonus offer of 400% up to £1500 for a limited time.