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Reactoonz (Play'n GO) Slot Review & Casinos in 2025

Adorable extraterrestrial creatures charged with the power of the stars fall from space and land in Reactoonz, an electrifying alien-themed video slot developed by Play'n GO.

Just like its predecessor, Energoonz, this game features a cascading reel mechanism, as well as random wilds and five Quantum features that destroy and transform paying symbols.

For more information about Reactoonz, keep reading this review, which details its mechanics, rules, winnings, and special features.

Best casinos with Reactoonz in 2025

The following list shows some of the best online casinos to play Reactoonz for real money. These casinos have all been certified by an official regulator, have a good reputation among users, and offer attractive bonuses with fair conditions.

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100% up to €200 + 100 free spins ▼ More Details ▼ *New Players only, 18+, Valid on first deposit, Bonus wagering 35x, Free spins are credited 10 spins/day over 10 days. T&Cs apply18+ | Please play responsibly | Operator's T&C apply.
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18+ | Please play responsibly | Operator's T&C apply.
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(T&Cs apply)100% up to €/£10018+ | Please play responsibly | Operator's T&C apply.
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(T&Cs apply)no welcome bonus available, 10% Cashback instead ▼ More Details ▼ *18+, all players, 10% lifetime cashback on losses within a day when balance drops to zero or below £10, Cashback is credited the following day and can be cashed out or played, cashback is valid for 10 days, T&Cs apply18+ | Please play responsibly | Operator's T&C apply.

*Bonus T&Cs apply! Accuracy not guaranteed, terms can change any time.

Pros and cons of Reactoonz

Reactoonz slot features

Reactoonz does not have traditional reels; instead, the action unfolds on a seven-by-seven grid with a cluster-pay system.

Winning combinations are formed by getting five or more symbols in a connected group, touching either horizontally or vertically.

The game's graphics are spectacular, with a cartoon-style art design reminiscent of a 3D animated film. The background features a slice of outer space, with galactic nebulas and dim stars flanking both sides of the grid.

The soundtrack, as in many other slots, is relatively intrusive and repetitive, although the futuristic sound effects are a delight for sci-fi fans.

Regarding symbols, there are eight regular ones: four low-value aliens with a single eye in yellow, green, red, and purple, and four premium ones, consisting of blue, orange, green, and pink extraterrestrials.

The last one—the pink alien—is the highest-paying symbol, awarding 1,200 times your bet for a cluster of more than fifteen symbols.

There is a vortex-shaped wild that substitutes for all other symbols.

The return to player (RTP) of Reactoonz is 96.51%, which is quite decent for an online slot. However, we recommend checking the payout rate at the casino of your choice, as Play'n GO slot RTPs can be adjusted by operators.

Cascading reels

When you get a group of five or more symbols connected horizontally or vertically, they disappear from the grid, and new symbols fall from above to fill the empty positions.

The cascading reel mechanic continues until no new winning combinations can be formed.

Quantum Leap Features

All wins achieved during a game round help charge the five Quantum Leap meters, one by one.

Once a meter is fully charged, one of the following quantum features is randomly added to the queue:

• Implosion: Transforms three to six symbols into wilds while destroying all adjacent symbols.
• Alteration: Selects a random one-eyed symbol and converts all matching symbols into another symbol. If no one-eyed aliens are on the grid, the feature can choose any available one.
• Demolition: Destroys all one-eyed and matching symbols.
• Incision: A wild symbol is placed in the middle and creates two diagonal intersecting lines. Both lines will display the same randomly chosen symbol.

When all five meters are fully charged, the Gargantoon feature is added to the queue.
The Gargantoon first adds a 3x3 wild to a random position on the grid. If no more cascades occur, it splits into two 2x2 wilds before finally becoming nine 1x1 wilds.

New symbols fall from the top of the screen to refill the grid before each move.

If no further cascades can be formed, any queued quantum features are activated. The round continues normally, allowing the meters to recharge for more effects and additional winnings.

The charge meters reset only at the end of the round if no more winning combinations are available.

Instability Feature

As if that weren't enough, the Gargantoon can randomly drop between four and eight wild symbols onto the grid if you land a non-winning spin. This is known as the Instability feature.

Giantoonz Feature

Four identical symbols adjacent to each other in a square shape (2x2) automatically create the Giantoonz.

Winnings are doubled in any winning combination that includes one or more Giantoonz.

Fluctuation Feature

In this special feature, a one-eyed alien is randomly chosen as the fluctuating symbol on each spin.

If any of the marked symbols are part of a winning cluster, they leave behind two wilds that substitute for all other regular symbols.

Our verdict of Reactoonz

The Reactoonz slot may seem a bit confusing and complicated at first due to its numerous features, but it's actually simple once you start playing.

Play'n GO has specialized in this type of cluster-pay game, which has become increasingly popular among players, so you're in expert hands.

The win potential is high (4,570x the total bet), and the base game is packed with adrenaline and tension as you try to charge the five Quantum Leap meters.

But beware; Reactoonz can be highly unpredictable. It's not uncommon to reach the third or fourth bar on the meter only to see your progress vanish instantly.

Additionally, the Gargantoon sometimes lands in the worst possible spot on the grid.

All in all, we thoroughly enjoyed this title. It's anything but traditional—which is a good thing—and it offers plenty of action. And if you liked the alien theme, we recommend playing Reactoonz 2, which offers slightly higher maximum payouts.

Reactoonz FAQ