Quick verdict: Reactoonz is Play’n GO’s alien cluster-pays slot on a 7×7 grid. Groups of 5 or more matching symbols win, cascades keep the action going, and a charging meter unleashes features ending in the giant Gargantoon wild. It’s highly volatile, with a 96.51% default RTP and a 4,570x top win.
Where we play Reactoonz
1win is our top-rated casino (9.9/10), with thousands of slots and a crypto withdrawal that took 15 minutes in our test.
Play at 1win18+. T&Cs apply. Not available in every country. Game libraries vary, so search the lobby for Reactoonz.
Reactoonz at a glance
| Provider | Play’n GO |
| Released | October 2017 |
| Layout | 7×7 grid, cluster pays (5+ touching symbols) |
| RTP | 96.51% default (lower versions exist) |
| Volatility | High |
| Bet range | $0.20 to $100 |
| Max win | 4,570x your stake |
| Key features | Quantum Leap meter, Gargantoon, Giantoonz |
How Reactoonz works
Symbols that touch horizontally or vertically in groups of 5 or more pay out, then disappear. New symbols drop in, and the cascade continues until there are no more wins. There are no paylines and no free spins: everything happens through cascades and features.
The features
- Quantum Leap meter: winning symbols charge the meter. Each filled segment triggers a Quantum feature: Implosion, Demolition, Incision or Alteration, which clear or change symbols to set up new wins.
- Gargantoon: filling the meter completely releases a 3×3 wild that splits into smaller wilds as it’s used.
- Giantoonz: four matching symbols in a square can merge into a 2×2 giant symbol, which counts double.
- Fluctuation and Instability: random effects that can add wilds to the grid.
RTP and volatility
The default RTP is 96.51%, but Play’n GO supplies lower versions, so check the game info. Volatility is high: many cascades end quickly, while the big wins need a full meter and Gargantoon.
Pros and cons
| Pros | Cons |
|---|---|
| Constant action with cascades and features | High volatility |
| Gargantoon can transform a spin | No free spins round |
| Good default RTP of 96.51% | Lower RTP versions exist |
| 4,570x max win | Busy screen takes getting used to |
Tips
- Try the demo to learn what each Quantum feature does.
- Keep stakes steady and sessions planned; volatility is high.
- Check the RTP at your casino before playing.
Where to play Reactoonz
Our first choice is 1win (9.9/10), which paid our test crypto withdrawal in 15 minutes. BitStarz (9.5/10) is a good alternative. Play’n GO games are widely available, but casino libraries vary by country, so search the lobby before you deposit, and check the RTP in the game info screen. Compare more options in our casino reviews.
Reactoonz FAQs
What is the RTP of Reactoonz?
96.51% by default, with lower versions available to casinos.
What is the max win on Reactoonz?
4,570x your stake.
Does Reactoonz have free spins?
No. Its features come from the Quantum Leap meter and cascades.
What is Gargantoon in Reactoonz?
A 3×3 wild released when the Quantum Leap meter is full.
How do you win in Reactoonz?
Land clusters of 5 or more matching symbols touching horizontally or vertically.
Signing up at 1win? Use promo code Ultragambler for the 500% welcome package. How it works
18+. T&Cs apply.
Check your local laws before you play
Online gambling laws differ from country to country, and in some places it is restricted or not permitted at all. Before you sign up to any casino listed on UltraGambler, check that online gambling is legal where you live and that the casino accepts players from your country. You must be 18 or older (or the legal gambling age in your country, if higher) to play. Only gamble with money you can afford to lose, and use the deposit limits and self-exclusion tools your casino provides if gambling stops being fun.
