Reactoonz Slot Game


#AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18, Please Gamble responsible.


#AD New customers only, 10 free spins on registration (max withdrawal £100), 100 free spins after first deposit, min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply


New depositing players only. Min. deposit: £10. Max. bonus: £200 + 25 Bonus Spins on Book of Dead. Offer valid on the first deposit. No wagering is required on Bonus Spins. Wagering Required on Bonus Cash: 40x. The match-up bonus that requires a deposit must be wagered 40x.


18+. New Players Only. Spins are given as follows: 50 Spins upon a first deposit of minimum £10. Spins may only be used in specific games. The game allowed: Book of Dead. Wagering Requirement: 35x. Spins expire after 24 hours. Promotion available for 72 hours.

18+ new players only. Maximum £50 bonus. Minimum deposit: £20. Deposit Bonus wins are capped at £500. Max bet with active bonus: £2. Wagering requirement 100% match deposit bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money without wagering requirement. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. Deposit Bonus expires after 30 days if wagering requirement has not been met. Free Spins expire after 3 days. One bonus allowed per person, address, device, IP. For full bonus terms and conditions, please read below. Responsible Gaming


Prepare for a weird, wonderful, and downright wacky adventure with the Reactoonz slot, available right now at many of our recommended online casinos. This online slot machine combines a unique structure with a chain reaction mechanic and a few other special features bundled in for good measure. It’s filled with vibrant alien blobs, and an aesthetic that is sure to bring a smile to your face.


  • Game Type: 7 reels and connecting win lines
  • Return to Player: 96.51%
  • Volatility: High
  • Themes: Cartoon
  • Release Year: 2017

Reactoonz is a colourful, zany, and fast-moving video slot that keeps all senses stimulated. It utilises an extra-terrestrial theme, with anthropomorphic aliens in the shape of colourful blobs, each with its own expression and distinct personality.

These alien blobs fall out of the sky and land on the reels, stacking up in random order. For a winning payline, you need at least 5 of the same symbols grouped together, and when that occurs, the payout will be triggered, the symbols will disappear, and new ones will drop into place from above.

There is also a Gargantoon on the side of the reels, waiting to play an important role during one of the bonus features. This Gargantoon likes to stay busy, and if you’re inactive for even just a few seconds, it will get impatient and eventually fall asleep, only waking when you start spinning again.

Play for Real Money

Click the image above o start playing Reactoonz for real money and begin exploring the weird and wonderful world that Play’n GO has developed. If you don’t have an account just yet, visit the Promotions page of your chosen casino before you sign up, as there may be a Welcome Bonus just waiting to be collected.

Deposit your funds, set your stake, and start spinning those reels!


You can win as much as 750x with a single symbol on the Reactoonz slot, but the potential payouts don’t stop there, as this game’s chain reaction feature and bonuses help to push the maximum win even higher.


  • Coin Sizes: Bet as little as £0.20 or as much as £100 per spin. Keep an eye on your stake, gamble responsibly, and don’t forget to check your account balance, which is displayed on the left side of the info panel.
  • Symbols
    • Main: Colourful Alien Blobs
    • Standard: Playing Card Symbols (10 to A)
Symbols5 symbols6 symbols7 symbols8 symbols9 symbols10+ symbols12+ symbols15+ symbols
Big Red1x2x3x5x8x20x50x750x
big green0.8x1x2x3x4x10x25x300x
big orange0.6x0.8x1x2x3x5x10x150x
big blue0.5x0.7x1x1.5x2x3x5x75x
small red0.15x0.20x0.40x0.60x0.80x1x3x10x
small orange0.15x0.20x0.40x0.60x0.80x1x3x10x
Small green0.10x0.15x0.20x0.30x0.60x0.80x1x3x
Small Yellow0.10x0.15x0.20x0.30x0.60x0.80x1x3x
  • Additional Bonus Features
    • Quantum Leap: Fill the meter to unlock one of the four bonus features.
    • Gargantoon: Unlocks extra Wilds during non-winning spins and can also appear as a mega symbol.

The Gargantoon can interact with the game from time to time. During any non-winning spin, it’s possible for this horned monster to drop between 4 and 9 Wild symbols on the reels. These can only appear when activated by the Gargantoon and can replace all other symbols in the game.

The Gargantoon can also appear on the reels. This happens when the Quantum Leap reaches the end, at which point the monster is added as a 3x3 symbol. The Quantum Leap climbs every time you win, with each vertical line equating to a queued feature. When all of these have been queued, the game will end and the features will begin.

The four features it can trigger are:

  • Implosion: Between 3 and 6 symbols become Wild.
  • Demolition: All one-eyed symbols and matching symbols are destroyed.
  • Incision: A Wild symbol is etched onto the centre of the reels as diagonal lines are created that show the same matching symbol.
  • Alteration: A one-eyed symbol is chosen at random and all matching symbols then transform into another symbol.

Software Mobile Experience

From the satisfying “zap” that sounds when you hit “Spin”, to the buzz of the symbols as they fall into place, record winning paylines, and then disappear from view, Reactoonz is a pleasing slot from the first spin to the last. And as good as all of this sounds, looks, and feels on desktop, it’s even better on mobile, adding a tactile element that helps to increase immersion and make this a more enjoyable experience all-round.

The buttons are large enough for you to see and tap, but small enough so they don’t get in the way, and the game screen itself was clearly made with mobiles in mind. The mechanics and the layout bear a close resemblance to mobile puzzle games, the same ones that have dominated app stores since the launch of the very first iPhone.

If you have a tablet or smartphone, we recommend picking it up and giving Reactoonz a spin today.


Join the chaos and surround yourself with squeaky, blobby aliens and their horned overlord. If you join one of our recommended sites and deposit for the first time, you can even take part in our Welcome Bonus, which could offer bonus credits and other extras to all new players.

When you finish with this slot, check out some of our other recommended titles, including Shields of Rome and Golden Colts.