Complete Guide to Play ‘n GO’s Reactoonz Slot Series

OLBG heads on an interstellar trip with Play ‘n GO’s Reactoonz slot series: you’ll find free demos, details on each release, information on each character, free demos, the top UK slot sites to play for real money.
Complete Guide to Play ‘n GO’s Reactoonz Slot Series
Chris Taylor
Chris Taylor The King of Slots

20+ years in the gambling industry including 13+ years playing and reviewing slots.

With the release of Energoonz in December 2013, slot provider Play ‘n GO started the Reactoonz slot series which takes you on an interstellar trip to a grid slot saga from another galaxy.

Offering electrifying visuals, immersive storylines, quirky characters and innovative mechanics, Reactoonz slots are amongst the most popular at UK casinos and slots sites. In my in-depth guide, there’s information about each slot game, free demo play slots and a breakdown of each of the characters. First, I begin with the top places to play these popular slot games in the UK.

Best Slot Sites to Play Reactoonz Slots

Quirky, colourful, immersive and simply fun, the Reactoonz slot series is very popular amongst UK players. If you want to play them for real money, below is a list of trusted and UK Gambling Commission-licensed slot sites you can find them at. To see how these sites are rated, check out OLBG’s How We Rate criteria. For more information on the sites, use the review link or use the SEE OFFER button to take advantage of their welcome offer.

4.7 / 5 18 Ratings
  • Mobile-first Casino With Instant Withdrawals
  • 6 minute withdrawals
4.8 / 5 13 Ratings
  • UK-only Casino With 24/7 Customer Support
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4.3 / 5 11 Ratings
  • Free, Instant Withdrawals
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4.4 / 5 37 Ratings
  • 10% Cashback always
  • Filter games by provider or theme
  • Exclusive All British games

All Reactoonz Slots

Energoonz was released in December 2013 but it wasn’t until Reactoonz came nearly 4 years later that the Reactoonz slot series was born. With a few more additions, this interstellar slot series is amongst the most popular with Cluster Pays slots fans. Below, OLBG’s Chris Taylor looks at each game in greater detail:  

1. Energoonz

Energoonz slot information banner: RTP, max win, volatility, minimum bet and release date

Released way back in December 2013, Energoonz was Play ‘n GO’s first Cluster Pays/grid slot game. This out-of-this-world adventure is played on a 5x5 grid with Cluster Pays from 20p per spin. When you land a win of 3+ matching symbols in a cluster, you’ll benefit from cascades and an increasing win multiplier up to 10x.

Clear all symbols on the grid to win a 1,000 times bet payout. When the word ‘BONUS’ is revealed in 1 or more columns, you’ll play the Bonus feature where up to 20 free spins and a 5x multiplier can be won on a non-cascading grid.

Medium volatility, Energoonz comes with 18,566 x bet max wins. It also boasts a very high 96.69% RTP rate which is the highest in the series. If you want high RTP slots, check out OLBG’s guide to the best payout slots.

2. Reactoonz

Reactoonz slot information banner: RTP, max win, volatility, minimum bet and release date

Released in October 2017, Reactoonz is the most popular game in the series. Played on a 7x7 grid with Cluster Pays, you can spin away from 20p per spin. High energy, winning clusters award cascades for continuous wins as well as charge the Quantum Leap meters. Once full, various features come into play including symbol destructions, diagonal lines of matching symbols, wild transformations and Vortex Wilds.

If you manage to charge all Quantum Leap meters, you will activate the Gargantoon feature with a 3x3 wild symbol added to the grid. This then splits into two 2x2 wilds and nine 1x2 wilds which every cascade. With the chance of Vortex Wilds being added to the grid, the Giantoonz will double wins when part of a winning cluster. Reactoonz also comes with a 96.51% RTP rate and 4,570 x bet max wins.

3. Reactoonz 2

Reactoonz 2 slot information banner: RTP, max win, volatility, minimum bet and release date

A slot sequel, Reactoonz 2 was released in October 2020 and is also played on a 7x7 grid with Cluster Pays. Set in a playful parallel universe and playable from 20p a spin, winning clusters lead to cascades for continuous wins. If they appear next to Uncharged Wilds, they will transform into electric wilds.

If fluctuating symbols are part of a cluster win, a single electric wild will appear. This in turn charges the Fluctometer when removed after a cascade or is destroyed by electric wilds. Fill the meter to add up to 3 electric wilds to the grid. When an electric wild is part of a cluster win or zaps any Reactoonz, the Quantumeter is charged.

There are 4 charge levels which activate Energoon Wilds. In level 3, a 3x3 Gargantoon appears and in level 4, a 2x multiplier is applied to all wins involving Gargantoon Wilds. Finally, there is a Wild Pair Explosion feature which destroys symbols on the grid or a line. Reactoonz 2 comes with a 96.2% RTP rate as well as 5,083 x bet max wins. If you like slot sequels, check out the best ones:

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4. Dr Toonz

Dr Toonz slot information banner: RTP, max win, volatility, minimum bet and release date

Released in September 2021, Dr Toonz sees you head to the depths of the Reactoonz creator’s undersea lab. Played with 6 reels and 4,096 ways to win, you can spin away from 20p per spin. With cascades for continuous wins, they also charge the Quantumeter which triggers 1 of 3 charge features.

These add up to 6 wilds, transform up to 8 symbols to another symbol or remove 1-eyed aliens and add wilds to the reels. The Quantum Wilds and Disintegration features add wilds which gives you more ways to win. Known as the Dynamic Payways mechanic, there are up to 262,144 ways to win in total.

In the Free Spins feature, you’ll begin with up to 25 free spins. The Quantumeter begins with 1 or 2 charges on each free spin making it easier to trigger the features. With 1 or more reels containing a 2x multiplier, this doubles the win amount on that reel. Up to 6 multipliers can activate resulting in a multiplier up to 64x.

Highly volatile, Dr Toonz comes with a 96.25% RTP rate. It’s also the highest-paying game in the Reactoonz series with 22,000 x bet max wins.

5. Gigantoonz

Gigantoonz slot information banner: RTP, max win, volatility, minimum bet and release date

Released in January 2022, Gigantoonz is played on an 8x8 grid with Cluster Pays from 20p per spin. Bigger and brighter than its predecessors, it comes with cascades and Mega Symbols which are up to 7x7 in size and contain a value of up to 13 symbols. Each winning Mega Symbol also leaves a wild symbol on the grid.

Look out for Quantum Wilds with up to 10 appearing randomly on the grid. Every winning symbol chargers the Quantumeter which 4 charge levels. With every 25 charges, a feature is activated to remove and transform symbols as well as adding Mega Symbols and Quantum Wilds are well as transforming Mega Symbols into the Mega Gargantoonz for more wins. With a 96.25% RTP rate and 4,000 x bet max wins, Gigantoonz is a fun slot game which is a decent addition to the popular series.

6. Gargantoonz

Gargantoonz slot information banner: RTP, max win, volatility, minimum bet and release date

Experience zero gravity in the Gargantoonz slot. Released in November 2023, it’s played on a 7x7 grid and uses a Cluster Pays mechanic. Playable from just 10p per spin, you help Dr. Toonz conduct various experiments. With a random symbol fluctuating on each spin, a win with that symbol will see up to 2 Quantum Wilds added to the grid. Up to 8 Quantum Wilds can be added randomly with the Discharge feature.

Winning clusters charge the Experiment Charge which activates various experiments. The Gamma Ray Burst adds wilds to the grid and removes instances of the same symbols whilst the Black Hole adds wilds which then collect adjacent symbols. The Supernova sees up to 5 wilds added which move in any direction collecting symbols.

Every experiment charges the Gargantoon Charger which begins with a 1x multiplier. Each overcharged experience increases the multiplier. If you complete all 3 experiments, you’ll trigger the Gargantoonz feature which adds Gargantoon Wilds to the grid which are up to 3x3 in size. Gargantoonz has a 96.2% RTP rate and comes with 7,000 x bet max wins.

Reactoonz Slots Facts

Slot NameRTP %VolatilityMax Win (x Bet)Minimum BetRelease Date
Energoonz96.69%Medium18566.15£0.2031/12/2013
Reactoonz96.51%Very High4570.3£0.2023/10/2017
Reactoonz 296.20%High5083£0.2001/10/2020
Dr Toonz96.25%High22000£0.2009/09/2021
Gigantoonz96.25%Very High4000£0.2027/01/2022
Gargantoonz96.20%High7000£0.1030/11/2023

Even though Energoonz was released in December 2013, it was only until Reactoonz came out in October 2017 that the Reactoonz slot series was born. Featuring cute aliens, you are taken to another galaxy where you are guaranteed electrifying graphics, quirky soundtracks, lots of bonus features and high win potential.

With details on all Reactoonz slots below, you’ll find a list of useful facts about the popular slot series. At a glance, you can see the most popular game, the highest max win potential, the highest RTP rate and more:

  • 🥇 1st Release: Energoonz was released in December 2013.
  • 👍 Most Popular: Without a doubt, Reactoonz is the most popular game in the series and amongst the most-played grid slots around.
  • 💰 Highest Max Win Potential: Dr. Toonz offers the biggest wins with 22,000 x bet max wins.
  • 📈 Highest RTP Rate: Energoonz comes with a high 96.69% RTP rate.
  • 🪙 Lowest Bet: Gargantoonz can be played from 10p per spin (all others have a 20p minimum bet).
  • 🔧 Mechanic: All are Cluster Pays slots except Dr. Toonz which has up to 262,144 ways to win.
  • 📱 Mobile-Friendly: Using HTML5 technology, all Reactoonz slots can be played on mobile devices.

Meet the Reactoonz

Reactoonz Slots Meet the Reactoonz banner

Want to more about the colourful creatures/aliens that inhabit the Reactoonz world? There are various bundles of energy which make the slot series come to life. Here is a run-down of all the characters:

  • Unitoon, Pentoon & Quantoon: This trio are not the smartest creatures but they use their powers and award Mega symbols to maximise win potential in Gigantoonz.
  • Wacktoon, Tritoon & Glowtoon: Featuring the Reactoonz games, they are cheeky aliens which play pranks on the Reactoonz family. They use their Flux Capacitor Wilds and Quantum Leap in the Reactoonz slot game.
  • Spiketoon, Gemtoon & Blocktoon: The hard workers and brains of the family, they are responsible for the Quantameter and Electric Wilds in Reactoonz 2.
  • Quantoon: A lone wolf, Quantoon is best known for his Quantumeter abilities and experiments in the Dr. Toonz slot game.
  • Gargantoon: Finally, the Gargantoon is the leader of the pack and uses his dynamic powersets to dominate the grids and award big wins. The Gargantoon awards experiments, fluctuating symbols and is the star of the Gargantoonz slot game.

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