About this game
Play’n GO’s space-themed game Reactoonz was released in 2017 and has remained on the lists of the most popular games ever since. Colorful and adorable space creatures take over a 7x7 grid, where a single win can trigger a long chain reaction.
Reactoonz does not use traditional paylines; instead, wins are created when symbols form clusters and disappear, making room for new combinations. The game adds excitement with a wide range of bonus features, such as basic symbols transforming into wilds or expanding symbols that can increase the size of the wins.
Game Overview
- Game Developer: Play’n GO
- Release Date: 2017
- Grid: 7x7
- Ways to Win: Cluster wins
- RTP: 96.5%
- Volatility: High
- Maximum win: 4,570x bet
- Free Spins: No
On a Journey with the Toonz
Reactoonz features a unique and highly detailed visual style: cute and funny space creatures look around and interact with each other while waiting for the player’s next move. The Gargantoon creature falls asleep when the reels are not spinning. Electronic sound effects and space-themed background music complete the gameplay experience.
Reactoonz’s one-eyed and two-eyed space creatures spin across a 7x7 grid, with the two-eyed symbols being slightly more valuable than the one-eyed ones. A win is created when at least five identical symbols are connected horizontally or vertically. Winning symbols disappear and new ones fall into their place, potentially triggering additional wins during the same spin.
What kind of game is Reactoonz?
The game does not include traditional free spins, but instead offers a variety of special bonus features, such as oversized symbols, symbols transforming into other symbols, and regular symbols turning into Wilds, all of which can increase the winning potential. Reactoonz can feature a lot of action during a single spin, and although the game may initially seem complex, the mechanics become easier to understand after a few spins, and the bonus features add extra excitement to the gaming experience.
On the other hand, due to its high volatility, the game can also have several spins without a win, but in return, wins can be larger when they eventually land. Especially, during special features and long chain reactions the winning potential increases. Theoretical return to player of Reactoonz at Tuplaa Casino is 96.5%, which is the highest possible RTP for the game.
For fans of the Toonz, Play’n GO’s retro-styled Energoonz is the original game in the series and well worth trying. Looking to spend more time with the space creatures, check out Reactoonz 2, which features expanded bonus features and a higher maximum win. Gigantoonz, meanwhile, offers bonus features alongside with mega symbols that can appear during spins.
Key Features
Reactoonz's special features can transform the game grid during a spin and keep winning chain reactions going even after no new cluster wins are formed. Multiple features can be activated within the same game round.
Giantoonz and the Transforming symbol
During a game round, four matching symbols can form a 2×2 Giantoonz. If the Giantoonz is part of a winning cluster, the value of that win is doubled.
In addition, one one-eyed symbol type is selected as the Fluctuating Symbol for each round. If it becomes part of a winning cluster, it leaves behind two Wild symbols that can trigger new chain reactions.

Quantum Leap and Quantum features
Each cluster win charges one of the five Quantum Leap meters. When a meter is fully charged, the game adds one random Quantum Feature to the queue. These features are triggered after the normal chain reactions end and can create additional winning opportunities.
The Quantum Features include:
- Implosion transforms 3–6 symbols into Wilds while removing all adjacent symbols.
- Alteration transforms one randomly selected one-eyed symbol type into another symbol across the entire grid.
- Demolition removes all symbols of one randomly selected one-eyed symbol type from the grid.
- Incision places a Wild symbol in the centre of the grid and creates two diagonal lines filled with the same random symbol.
Gargantoon and Instability
Gargantoon is a special Reactoonz feature that places a giant 3×3 Wild symbol on the game grid. It is activated once all five Quantum Leap meters have been fully charged. If the giant Wild does not immediately create new wins, it breaks apart into smaller Wild symbols, creating additional opportunities for new winning clusters.
If a game round starts without a winning combination, the Instability feature can add 4–8 Wild symbols to the grid, giving an otherwise losing round another chance to develop into a winning chain reaction.

Good to know about the game:
How do you win in Reactoonz?
Wins in Reactoonz are formed by clusters. A cluster consists of five or more matching symbols that are connected horizontally or vertically. When a cluster is formed, it awards a win.
Why can a single game round last so long?
Winning symbols are removed from the grid and replaced by new ones. If the new symbols form additional clusters, the same game round continues with more wins. Reactoonz's special features can also transform the grid and extend the chain reaction.
What does the Wild symbol do?
The Wild symbol substitutes for all regular symbols, helping to create new winning clusters. Wilds can appear on the grid through several Reactoonz special features, including the Quantum Features.
Can you buy the bonus in Reactoonz?
No. The original Reactoonz does not include a Bonus Buy feature. All special features are triggered through the game's mechanics.
How much can you win in Reactoonz?
The maximum win in Reactoonz is 4,570x your stake. The game's biggest win potential comes from long chain reactions, where multiple special features can be activated during the same game round.
Game details
- RTP
- 96.51%
- Volatility
- High
- Released
- 2017
- Provider
- Play'n Go
- Genre
- Video Slots
- Theme
- Aliens, Monsters



















