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PlayNGo
Reactoonz is a grid-based online slot from Play’n GO, known for its colourful alien theme and cascading symbols mechanic. Unlike traditional slots with fixed paylines, Reactoonz uses a 7x7 grid where wins are formed by clusters of matching symbols. Winning clusters disappear and make way for new symbols to fall into place, creating the potential for multiple consecutive wins from a single spin.
The game is designed around quirky alien characters called Reactoonz, each with its own unique look and payout value. Alongside the base game, features such as Quantum wilds, fluctuating symbols, and the Gargantoon bonus provide added layers of play. With its animations and chain-reaction gameplay, Reactoonz has become one of the most recognisable cluster slots available.

Before spinning, select your stake using the controls. Reactoonz supports a range of bets, allowing both cautious play and higher stakes depending on player preference.
Once the bet is set, press the spin button. The 7x7 grid will fill with symbols, and any cluster of five or more matching icons connected horizontally or vertically will result in a win.
When a winning cluster is formed, the symbols disappear and new ones fall into place. This continues until no new wins are created, meaning a single spin can produce multiple winning combinations.
Highlights
Considerations
Smaller, single-eyed aliens in different colours represent the lower-value symbols. While these appear frequently, they award smaller payouts per cluster.
Larger, two-eyed aliens are higher-paying symbols. Bigger clusters of these creatures can lead to substantial returns.
The energy orb acts as the Wild. It substitutes for all other symbols to help complete clusters, and it also appears during bonus features.

On every spin, one random one-eyed alien is marked as fluctuating. If this symbol forms part of a winning cluster, extra wilds are added to the grid.
Winning clusters charge the Quantum meter. Filling the meter triggers one of four Quantum features:
When all Quantum features have been activated in a single round, the Gargantoon appears. This oversized alien drops onto the grid as a 3x3 Wild, then splits into smaller 2x2 and 1x1 Wilds in successive cascades.
Reactoonz is fully optimised for play on smartphones and tablets. The 7x7 grid fits neatly onto smaller screens, and the cascading animations remain smooth on both Android and iOS devices. The game requires no downloads and runs directly through mobile browsers.
Reactoonz is available now here at the UK online casino 7bet. Players must register, verify their account, and be aged 18 or over to play for real money. For those who prefer real-time table play, explore other options in our live casino.
Reactoonz has a Return to Player (RTP) of approximately 96.51%. This percentage reflects the theoretical long-term return to players, though actual results will vary per session.
No, Reactoonz does not feature paylines. Wins are formed by clusters of five or more matching symbols connected vertically or horizontally on a 7x7 grid.
The maximum win potential in Reactoonz is achieved during the Gargantoon bonus round. While there is no progressive jackpot, the combination of cascading wins and multiplier features creates significant payout opportunities.
No, Reactoonz does not include a traditional free spins round. Instead, bonus play comes through Quantum features and the Gargantoon Wild mechanic, which substitute for the role of free spins in other slots.
Yes, Reactoonz is designed for mobile-friendly play. The grid layout and animations scale well to smartphones and tablets without affecting performance or gameplay.
Yes, Reactoonz is considered a high volatility slot. This means wins may be less frequent, but the game is capable of awarding larger payouts when features are triggered.
Betting is only available to participants aged 18 years and over. Please bet responsibly. BeGambleAware.org