Reactoonz is a grid slot Play’n GO released in 2017. Instead of reels and paylines it drops small one-eyed and two-eyed creatures onto a 7x7 field, and wins are formed by clusters of matching symbols. The theme is a cartoon laboratory full of alien blobs, and the game is best known for the layered meters that sit above the grid and turn a long cascade into a chain of extra effects.
- Cluster pays
- Cascading symbols
- Quantum Leap
- Gargantoon wild
- Studio
- Play’n GO
- Released
- 2017
- Layout
- 7x7 grid, 49 positions
- Ways to win
- Cluster pays, no paylines
- Volatility
- Very high
How It Plays
The field is a 7x7 grid of 49 positions with no reels and no paylines. A win is a cluster of five or more identical symbols touching each other horizontally or vertically — diagonal contact does not count. Winning symbols are removed, the ones above drop into the gaps and new symbols fill the top, so a single spin can pay several times before it settles.
The stake is set as one number per spin rather than as a line bet times a coin value, and the usual range runs from 0.20 to 100 per spin, though an individual casino may offer a narrower band. Because the game has no paylines, there is nothing to adjust beyond the stake itself. The top win is capped, and the figure for the build in play is shown in the game’s information panel.
Symbols
There are eight regular symbols, all of them Energoons — small coloured creatures split into two groups. The four one-eyed ones are the low end and appear most often; the four two-eyed ones are the high end and pay several times more for the same cluster size. Because the grid is large and cascades are frequent, the low group does most of the visible work while the high group is what makes a long reaction worth something.
Payouts step up with the size of the cluster rather than with a fixed three, four or five, so the same symbol pays one amount at five matched and considerably more at twelve or fifteen. Wilds substitute for any regular symbol, and there is no scatter symbol in the game.
Bonus Feature
Reactoonz has no free spin round. Everything happens inside the paid spin, driven by two meters above the grid, and the trigger for both of them is destruction: every symbol removed by a win feeds them.
The first effect is direct. Each time a reaction destroys five or more symbols, a wild is created on the grid, so a good cascade leaves behind material for the next one. The second is the Quantumeter, which charges with the symbols removed during a spin. As it fills, a Quantum Leap effect fires — the game reshapes part of the grid, adding wilds or converting symbols, and then lets the cascades continue from the new arrangement.
Charging the meter all the way brings the Gargantoon, a giant wild that occupies a 3x3 block. It does not sit still: on the following reactions it splits into smaller wilds and then into single ones, scattering wilds across the field as it goes. This is where the largest results in the game come from, and it is also the part that arrives least often.
Controls
The panel runs along the bottom. A single control sets the total stake per spin, the spin button sits in the middle, and there is a fast-play option that shortens the cascade animations without changing anything about the outcome. The Quantumeter and the charge display sit above the grid and update as symbols are cleared.
Autoplay runs a chosen number of spins and can be told to stop on a single win over an amount you set, or when losses reach a limit. It is worth setting those limits here rather than in most games: a run of blank spins in Reactoonz is normal, and autoplay will keep going through it.
Every game also carries an information panel with its rules and its return-to-player figure for the build running here. That panel is the accurate source; a number copied from elsewhere may describe a different build — see how to read RTP.
Pros and Cons
This is a very high volatility game, and that is the main thing to know about it. Most spins produce a short cascade or nothing at all, and the meters usually stop part way. The design is built so that the interesting part — a long chain that fills the Quantumeter and brings the Gargantoon out — is rare, and the ordinary spins in between are quiet. There is no free spin round to soften that.
It suits a player who is comfortable with a flat stretch and wants the swing when it comes, and it rewards a smaller stake than you might use on a low-volatility slot. It is a poor fit if you want regular small returns or a session that moves at a predictable pace. One thing worth saying plainly: a dry run does not build anything up. Each spin is resolved independently, and the meters reset with it, so a game that has not paid for a while is in exactly the same position as a fresh one.
- Cluster pays on a 7x7 grid keeps a spin alive longer than a payline game
- Wilds are created by the cascades themselves, so wins feed the next win
- The Gargantoon is a genuinely distinct top feature, not a reskinned free spin round
- One stake control and nothing else to configure
- Very high volatility means long stretches with nothing
- No free spins and no scatter
- The meters often stall part way, which can feel like a near miss
- Busy screen: several things animate at once and take a while to read
18+ or the legal age where you live. This game carries a house edge like every other. Play only with money you can afford to lose.
More From Play’n GO
Other titles by the same studio in our lobby.
Questions
- Does Reactoonz have free spins?
- No. There is no free spin round and no scatter symbol. All of its features — the wilds from reactions, the Quantum Leap effects and the Gargantoon — happen during ordinary paid spins.
- How do wins work without paylines?
- Five or more identical symbols touching each other up, down, left or right form a cluster and pay. Diagonal contact does not count. The bigger the cluster, the higher the payout for that symbol.
- What is the Gargantoon?
- A giant wild that covers a 3x3 block and appears when the Quantumeter is fully charged. On the reactions that follow it breaks apart into smaller wilds and then into single ones, spreading wilds across the grid.
- Is the game due to pay after a long losing run?
- No. Every spin is worked out on its own, and the meters start empty again each time. A long dry run tells you nothing about the next spin.
- Can I try it for free?
- Yes, there is a demo mode on virtual credits. Given how the volatility works, it is a sensible way to see how long the quiet stretches actually feel before staking anything.