Reactoonz slot overview
Reactoonz is Play'n GO's alien-themed cluster pays slot, where cascading wins charge a Quantum meter that unleashes powerful features and the giant Gargantoon. First released in 2017, it remains a staple at UK online casinos.
How to play Reactoonz
Reactoonz is played on a 7×7 grid. Clusters of 5 or more matching symbols touching horizontally or vertically win, then cascade away.
- Choose your stake – up to the UK maximum of £5 per spin (£2 for players aged 18–24).
- Spin the reels and watch for wilds and scatters.
- Trigger the bonus features for the biggest wins.
Reactoonz features and free spins
Cascades
Winning clusters are removed and new symbols drop in.
Quantum Leap
Charging the Quantum meter triggers features that transform, destroy or add wilds to the grid.
Gargantoon
Fill the meter to release the Gargantoon – a giant wild that splits into smaller wilds.
Reactoonz RTP and volatility
Reactoonz is high volatility with a published default RTP of 96.51% and a maximum win of 4,570x your stake.
Tips for playing Reactoonz
- Cluster pays feel very different from paylines – try it in demo mode first.
- The Gargantoon is where big wins happen.
- Expect long sequences of small cascades.
Reactoonz pros and cons
Pros
- Unique cluster pays on a 7×7 grid
- Quantum features and Gargantoon
- 4,570x max win
Cons
- High volatility
- Different feel from payline slots
Reactoonz vs similar slots
| Slot | Developer | RTP | Volatility | Ways to win |
|---|---|---|---|---|
| Reactoonz | Play'n GO | 96.51% | High | Cluster pays (7×7) |
| Book of Dead | Play'n GO | 96.21% | High | 10 paylines |
| Big Bass Bonanza | Pragmatic Play | 96.71% | High | 10 paylines |
| Sweet Bonanza | Pragmatic Play | 96.48% | High | Scatter pays |
Book of Dead, Big Bass Bonanza, Sweet Bonanza are good alternatives if you enjoy Reactoonz.
Reactoonz on mobile and in demo mode
Reactoonz is fully playable on mobile in casino apps and browsers. You can also try it in demo mode at UK-licensed casinos once you have verified your age – a good way to see how often the features trigger before playing for real.
Our verdict on Reactoonz
Reactoonz is a high volatility slot from Play'n GO with a 96.51% default RTP. Its standout strength is unique cluster pays on a 7×7 grid; the main thing to be aware of is that it has high volatility. Set a budget that can handle quiet spells.
Where to play Reactoonz in the UK
Reactoonz is widely available at leading UK casinos. Check the game lobby at your chosen casino, and compare welcome offers below.
See every offer on our casino bonuses page, or browse more video slots.
Frequently asked questions
What is the RTP of Reactoonz?
The developer's published default RTP is 96.51%. Check the game's help screen, as casinos can run different versions.
Is Reactoonz high volatility?
Reactoonz is high volatility.
What is the max win on Reactoonz?
The maximum win is 4,570x your stake.
Can I play Reactoonz for free?
Yes, in demo mode at UK-licensed casinos once you have verified that you are 18 or over.
How does Reactoonz pay?
Clusters of 5 or more matching symbols touching horizontally or vertically win.