All casinos featured on Bojoko are our partners. They are all licensed and regulated by the UK Gambling Commission. Ad Disclosure
All casinos featured on Bojoko are our partners with valid gambling licenses. Ad Disclosure

Reactoonz slot review

Added by Play'n GO. Information last updated: 15/05/2020

User rating:

- (0)

Tester rating:

3.7 (1)

Game information

Game supplier:Play'n GO

Release date:10/2017



Max. win:bet x 4570

Mobile version:Yes

Play Reactoonz


Non standard reels


Stacked wilds

Cascading reels

Colossal symbols





Cute & cuddly

User ratings (0)

Game design:



Game sounds:

Mobile gaming:



Screenshot Screenshot Screenshot Screenshot
RTP (Return to player):
Max. win:
bet x 4570

Bojoko score (compared to other slots on Bojoko)
Play'n GO score (compared to other slots of supplier)

Slot tester's review: Kati Saari

Charge up a quantum leap and tear holes through the parallel universes. Reactoonz is a game full of energy and chaos.

In 2017, Play’n GO released Reactoonz, a sequel to Energoonz. Reactoonz takes everything that was good in the original and pushes it even further. This is one sequel that has made the original obsolete.

Reactoonz is not your average slot. It is played on a 7x7 grid and it has no paylines. You win if there are five or more of the same symbols in a cluster. Energoonz and Gemix were one of the first slots of this kind, but it is NetEnt who has become well known for their Cluster Pays mechanic. They have even trademarked the name.

Reactoonz is a game full of special features, random bonuses and all kinds of chaos. This is a double-edged sword, as it is hard to understand what is going on. It took me a good while to figure out what each special feature is and how they work, and I have played a ton of different slots.

Graphics and sound

Reactoonz is a light-hearted sci-fi slot full of aliens. The visual style is an improved version of Energoonz, which means cute creatures with varying amounts of eyes, bolts of electricity zapping across the stage and quantum vortexes opening portals to distant universes. So, your typical sci-fi stuff.

Reactoonz has a fairly unique look that is easy to recognise and easy to use. Every visual aspect is made to be user-friendly. I found it to be easier to learn all the mechanics by playing the slot, rather than reading the rules.

The game sounds like any other space-themed game. This is a part that could use a little work, as it is so forgettable. It’s not bad, but just not something you would remember after you close the game.

There is one thing that is worth a mention. The aliens do sound a little like the Minions. So, if you aren’t a fan of the yellow buggers, you might want to mute the game completely.

Symbols and wins

The symbols are all made up of cute little aliens. The one-eyed little ones are the lower-valued symbols and the bigger, more matured two-eyed ones are the high-value symbols. They are somewhat colour-coded, but only three out of the four aliens follow that system.

During the normal play, there is one special symbol in there as well. That is the wild quantum vortex. This symbol can only be created by other features and will never just fall from the top of the screen.

Reactoonz is based on chain reactions. A single win is always tiny, but it will cause a cascade effect and new symbols fall in to fill its place. It is like the Avalanche mechanic in Gonzo’s Quest.

Instead of getting a multiplier, you get a quantum charge when you get a win. A full quantum charge is used when there are no winning combinations and they keep the game moving. Get enough quantum charges and even the great Gargantoon will show up.

Reactoonz is a high-volatility slot with an RTP of 96.51%. To win big, you need to chain up multiple smaller wins and keep the wheels spinning. A single spin will basically never be worth your wager.


  • Glowing Alien: Get wilds with reactive aliens

In every round, there are some random aliens that glow. If you get them in a winning combination, they leave behind a wild quantum vortex.

  • Instability: The parallel universes aren’t very stable

Each time the first spin in a round doesn’t get a winning combination, the great Gargantoon may send in some wild vortexes. If the Instability feature activates, you get 4-8 wilds added to random places on the field.

  • Giantoonz: Grow you aliens for more value

Aliens are very adaptive and can change size and combine with each other. If you get a 2x2 square filled with one type of alien, they combine into a Giantoon. Giantoonz are counted as four symbols, but they double every win they are a part of.

  • Quantum Feature: Charge up the quantum leap and alter reality

Every time you win anything, you charge up your quantum machine. Get enough juice and you get a full charge of a random type. A charge is used when you get a spin with no winning combinations. Your round is over when there are no wins available and you have no charges left if the quantum machine.

There are four different charges:

  • Implosion: Implosion changes 3-6 random symbols to wilds and destroys every symbol that surrounds those wilds.
  • Incision: Incision will change the center square into a wild and cut two diagonal lines across the field. Those aliens that are touched by the incision are all changed to one random symbol.
  • Demolition: Demolition will destroy every one-eyed alien from the board.
  • Alteration: Alteration takes a random one-eyed alien and changes every one of them into a different symbol.

What you get is chosen randomly, but you can tell what you have in store by the colour of the charge.

  • Gargantoon: Bring forth the giant creature

If you manage to fill up the entire Quantum Feature, you get a visit from the great Gargantoon. This 3x3 alien is a gigantic wild, which will deteriorate over time. The Gargantoon will stay in place but divide into smaller creatures with every spin.

My experiences

I have always been fascinated by slots that do something different. That is why I liked Energoonz and was interested in Reactoonz when I first heard about it. Innovation is key when it comes to good game design.

Reactoonz is not the simplest of games. If you read the rules, you might spend a good moment trying to figure out how things work. I tried that and didn’t quite understand everything. When I started to play, then it all made sense. So, what is the solution? Just go and play, you’ll figure everything out soon enough.

When the slot gets going, it is a wild ride. The quantum charges can keep the game moving for a good while, and if you get up to Gargantoon, you are in for a treat.

For me, this is an interesting slot, but not a one that I would play often. It is fun to play, but the volatility is just a tad too high for my taste. The game is a bit chaotic and a lot is determined by random events. If you like a game with high volatility and the possibility of a super valuable spin, then Reactoonz is definitely worth a look.

Overall rating:


Gameplay trailer

Play Reactoonz for free

Browse casinos with Reactoonz and other slots from Play'n GO. Create an account and try the game for free before making a deposit.

+18, new UK players only, be GambleAware | Full apply

+18, new UK players only, be GambleAware | Full terms apply

+18, new UK players only, be GambleAware | Full apply


Wins and bets

RTP (Return to Player):96.51%


Max. win:bet x 4570

Min. bet:£0.2

Max. bet:£100

Progressive jackpot:

Reels & playlines



Non-standard layout:

Max. lines:1

Min. lines:1

Win both ways:

Other features


Expanding reels:

Stacked symbols:

Colossal symbols

Auto play:

Turbo play:

Quick play:

Virtual reality:

Bonus features

Bonus game:

Random bonus:

Progressive bonus:

Buy bonus:

Free spins:

Scatter symbols:

Bonus game symbols:


Standard wilds:

Sticky wilds:

Walking wilds:

Stacked wilds:

Random wilds:

Multiplier wilds:



Walking re-spins:

Sticky re-spins:

Cascading reels:

Sticky wins:


You can play Reactoonz in English, Finnish, Swedish, German and 30 other languages.

All supported languages:
English, Finnish, Swedish, German, French, Spanish, Italian, Russian, Bulgarian, Croatian, Czech, Danish, Dutch, Estonian, Greek, Hungarian, Latvian, Lithuanian, Polish, Norwegian, Portuguese, Romanian, Slovak, Turkish, Ukrainian, Chinese, Slovene, Korean, Japanese, Indonesian, Thai, Vietnamese, Malay


Reactoonz supports GBP, EUR, USD, CAD


Release date 10/2017
82nd newest on Play'n GO 1,155th newest on Bojoko
RTP 96.51% 0.65% > average
59th highest on Play'n GO 447th highest on Bojoko
Win up to 4570 x your bet
95th highest on Play'n GO 722nd highest on Bojoko
Paylines 1 95% < average
125th highest on Play'n GO 1,923rd highest on Bojoko
Min bet £0.2 per spin
99th lowest on Play'n GO 1,044th lowest on Bojoko
Max bet £100 per spin
2nd highest on Play'n GO 642nd highest on Bojoko
Rated 0 by 0 members
16th most rated on Play'n GO 38th most rated on Bojoko
151 more slots listed by Play'n GO

Similar slots

Slot tester's profile


Kati Saari

Kati Saari

The year was 2013 when I first came across online casinos. Around the same time, I also began my career as a content writer, specializing in online casinos and casino games.

It's been an awesome journey, seeing how online casinos have evolved since the early 2000s to what they are today!

During these years I particularly fell in love with online slot games. I'm continuously amazed by how they've advanced from simple, three-reel slots to beautifully crafted games - sometimes working without reels entirely.

My favourite games are usually made by NetEnt and Play'n GO. Though it's hard to name just one all-time-favourite, Gonzo's Quest was the one that "reeled" me in.

Latest reviews:
Reactoonz cover

Game supplier:Play'n GO

Release date:10/2017

RTP (Return to player):96.51%

Max. win:bet x 4570

Mobile version:Yes

User rating: 0
Tester rating: 3.7

User reviews

Sign in to review slots on Bojoko.

Say "yes" to the cookies. Learn more in our privacy policy.