Reactoonz is Play'n GO's 7x7 cluster-pays slot from 2017, and it sits in the SpinAway Casino lobby. The best RTP setting is 96.51%, volatility is high and wins cap at 4,570x the stake.
Yes - Reactoonz by Play'n GO is in the SpinAway Casino lobby. It is a high-volatility 7x7 cluster slot with five published RTP settings, the best being 96.51%, a top win of 4,570x the stake and no classic free spins round. The Quantum features and Gargantoon wilds do that job instead.
Reactoonz has no scatter and no free spins round, and that surprises many first-time players. Everything happens inside a normal paid round: every win charges the Quantum Leap meters, full meters queue a feature, and the features fire the moment the cascades run dry. One lucky round can chain several of them together, which is where the big Reactoonz wins come from.
Play'n GO's own game rules list four Quantum features and one finale. Each full meter adds one of the four at random; when all five meters are full, Gargantoon joins the queue. The meters reset only when the round ends with no winning cluster left on the grid.
Five charge meters, called Quantum Leap meters in the rules and the Quantumeter by most players. Every winning cluster in the round fills them one by one.
Turns 3 to 6 symbols into wilds and destroys every symbol next to them, so new aliens drop straight into the gaps.
Picks one random one-eyed alien and changes all matching symbols into another type, often building one big cluster.
Removes every one-eyed alien and every matching symbol from the grid, clearing space for a fresh drop.
Cuts a wild into the centre of the grid and draws two crossing diagonal lines through it, both showing the same random symbol.
The finale: a 3x3 wild that splits into two 2x2 wilds, then into nine single wilds, one step each time the cascades stop.
Two smaller extras work on every spin. Four matching aliens in a square merge into a Giantoonz, and any cluster that includes one pays double. One one-eyed alien type is also marked as the fluctuating symbol each spin, and when it wins it leaves two wilds behind.
Looking for Reactoonz free spins?The game has none of its own. Free spins you may see at SpinAway are casino rewards, not a game feature, so check the terms of the welcome package to see which slots they cover.
Reactoonz is part of the regular SpinAway lobby - you will find it on the game rail on our homepage alongside other Play'n GO titles such as Moon Princess and Fire Joker.
SpinAway is run by Jungle Media Ltd under Malta Gaming Authority licence MGA/B2C/822/2020, and Play'n GO is one of the approved game suppliers on that licence. In practice that means the SpinAway Casino Reactoonz you open is the studio's own build of the game, the same one Play'n GO supplies to every licensed casino.
On Android you can play inside the SpinAway app; on an iPhone the mobile site in Safari runs the game just as well. The quickest route is to open the SpinAway lobby, type "Reactoonz" into the search and add it to your favourites so it stays one tap away.
Forget paylines. Reactoonz drops 49 aliens onto a square grid, and anything that touches in a big enough group pays. Here is one round from start to finish, in the order the rules sheet describes it.
You set a total stake from €0.20 to €100 and the grid fills. A cluster of five or more matching aliens touching horizontally or vertically is a win; bigger clusters pay more.
Winning symbols vanish and new ones fall from above. The cascade repeats until no new cluster forms, so one stake can pay several times.
Every win in the round adds charge to the five Quantum Leap meters, and each full meter puts a Quantum feature in the queue.
When the cascades stop, the queued features trigger. If they create new clusters, the round carries on and the meters keep charging.
With no win left on the grid, the meters reset and the round ends. Nothing carries over to the next spin.
TipThe Fluctometer you may have read about belongs to Reactoonz 2. The original game uses the fluctuating symbol described above, so do not wait for a second meter that is not there.
A Reactoonz demo is the cheapest way to see a full feature chain before any euro is on the line.
Play'n GO hosts a free version of Reactoonz on playngo.com, and the game's rules sheet confirms a free game mode. The credits are play money with no cash value.
Give it a few hundred spins. You will see how often the meters fill, how rarely Gargantoon arrives and how long the quiet spells can last on a high-volatility slot.
For euro wins you need a SpinAway account with a deposit through one of the options shown in the cashier, such as a debit card or an e-wallet. Under the casino's terms, e-wallet and prepaid deposits are credited immediately.
The game you open there is the same Play'n GO build as the demo, so what you learned carries straight across.
Play'n GO ships Reactoonz with five RTP settings. The casino chooses one, and the number changes what a session costs on average.
| RTP setting | House edge | Return per €100 | Cost per €1,000 |
|---|---|---|---|
| 96.51% | 3.49% | €96.51 | €34.90 |
| 94.51% | 5.49% | €94.51 | €54.90 |
| 91.49% | 8.51% | €91.49 | €85.10 |
| 87.5% | 12.5% | €87.50 | €125 |
| 84.51% | 15.49% | €84.51 | €154.90 |
Swipe the table sideways to see every column.
The five values come from Play'n GO's Reactoonz rules and settings sheet, with 96.51% marked as the default. "Return per €100" is the long-run average paid back for every €100 staked, and "cost per €1,000" is the average loss on €1,000 of total bets.
To see which setting you are playing at SpinAway, open the game menu inside Reactoonz and go to the game rules: the theoretical RTP line there is the one in force. We check it every time we load the game, and our RTP explained guide covers how that percentage plays out for Irish players.
Volatility is the other half of the picture. Play'n GO rates Reactoonz high, 9 on its scale, so most spins return small cluster wins or nothing, and the real payouts sit in rare rounds where features chain into Gargantoon.
Move the sliders to see what a Reactoonz session costs on average.
Averages only: high volatility means real results swing far either side. Session time assumes about 4 seconds per spin; long cascades take longer. If play stops being fun, Gambling Care offers free support in Ireland. 18+.
The Reactoonz max win is set in the rules sheet as a maximum exposure of €457,030 at the default top bet of €100, which works out at 4,570.3x the total stake. Play'n GO puts the chance of reaching it at less than 1 in 1 billion, so treat it as a ceiling, not a target.
The biggest rounds almost always need the full chain: several Quantum features building clusters, the meters filling again and Gargantoon splitting into wilds across a packed grid. Giantoonz help too, since any cluster they touch pays double.
After a long dry spell Gargantoon is due.
Every round is independent and the meters reset when it ends, so nothing builds up between spins.
A bigger stake raises the RTP.
The RTP is the same at every stake. Only the setting the casino chose changes it, which is why the game rules screen matters.
Most hiccups have a quick fix. This is what we try before we contact SpinAway's live chat.
The questions we hear most about the slot, answered from the Play'n GO rules sheet.
Yes. Reactoonz is on the game rail of the SpinAway lobby, and Play'n GO is one of the approved game suppliers on SpinAway's Malta Gaming Authority licence MGA/B2C/822/2020. Use the lobby search if you do not spot it straight away.
Play'n GO publishes five settings: 96.51% (the default), 94.51%, 91.49%, 87.5% and 84.51%. The casino picks one, and the game rules screen inside Reactoonz shows the value in use. Our RTP guide explains what the number means over a session.
No, there is no free spins round in the game itself. The bonus action comes from the Quantum Leap meters, the four Quantum features, Giantoonz, the fluctuating symbol and Gargantoon, all inside ordinary paid rounds.
The rules sheet caps a round at 4,570.3x the total stake. At the default maximum bet of €100 that is €457,030, and Play'n GO rates the chance of hitting it at less than 1 in 1 billion.
Yes. Play'n GO hosts a free-play version on its own site, and the rules sheet lists a free game mode. Demo credits have no cash value, so it is the right place to watch the meters and features before you play for euro.
When all five Quantum Leap meters fill, Gargantoon joins the queue. He lands as a 3x3 wild, splits into two 2x2 wilds when cascades stop, then breaks into nine single wilds. He can also drop 4 to 8 wilds on a non-winning spin.
Play'n GO rates it high, 9 on its volatility scale. Expect long stretches of small cluster wins and rare big rounds when the features chain together, so pick a stake that leaves room for many spins.
Reactoonz is waiting in the SpinAway lobby. Check the RTP in the game rules, set a stake your bankroll can carry and let the aliens cascade.
Reactoonz in the lobby
7x7 grid, 4,570x max win
Welcome Bonus Package: 100% up to €500 + 200 Free Spins
