Reactoonz 2
This demo version does not require any deposits and is for informational purposes only. Play responsibly – BeGambleAware.org. 18+.

Reactoonz 2 Free Play

The Reactoonz 2 demo mode lets players see how wins chain together through cascades, with every removal of symbols helping to build charge on two meters. In test mode you can clearly follow how the process unfolds spin by spin, making it easier to understand the slot before playing with real stakes.

Play’n GO
39 games
92.7%
Return to player
£0.2
Min bet
10000x
Max win
high
Volatility
About the game

Play’n GO returns to its alien playground with Reactoonz 2, where the mischievous one-eyed crew chains of cascading wins. The sequel leans on charge-up mechanics that release different wild types and push rounds to bigger swings. In this Reactoonz 2 review, we focus on the features that shape the gameplay, while in our demo hub you can find other striking releases from the same provider.

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Reactoonz 2: Slot Overview

The Reactoonz 2 slot places its action on a glowing laboratory backdrop, where clusters of cartoon aliens tumble into place with each spin. 

Graphics & Sound: Neon Lab Chaos with Bouncing Aliens

Characters bounce and twitch as wins connect, while the oversized Gargantoon dominates the grid when released, shaking the screen with each move.

The soundtrack blends electronic bleeps with pulsing effects that rise in tempo as the meters fill, creating a sense of pressure before the next feature drops. Audio cues mark every charge and explosion, and all sounds can be turned off in the settings menu.

Main game

Volatility & RTP

Reactoonz 2 RTP options: 94.20% or 91.20% depending on the version. This is a relatively low return compared to many other slots. Volatility is high, meaning long dry spells can be followed by sudden swings, while the maximum win is capped at x5,083 your stake.

How to Play Reactoonz 2

Reactoonz 2 demo play starts with choosing a stake from fixed amounts between £0.20 and £5, adjusted using the arrows under the reels. Spins are launched with the central button.

Some operators will offer you a demo with the autoplay function after logging in. It lets you set between 10 and 100 spins, with optional stop conditions such as a single win above a chosen value, or when your balance increases or decreases by a set amount. A fast spin mode can also be enabled for shorter rounds.

Game Symbols and Payouts

In Reactoonz 2, wins are created by clusters of 5 or more matching symbols that touch horizontally or vertically.

Top symbols

Symbol567891012+15+
Pink alienx1x2x3x5x8x20x50x500
Green alienx0.8x1x2x3x4x10x20x200
Orange alienx0.6x0.8x1x2x3x5x10x100
Blue alienx0.5x0.7x1x1.5x2x3x6x60

Low symbols

Symbol567891012+15+
Purple / Red one-eyedx0.15x0.2x0.4x0.6x0.8x1x3x10
Green / Yellow one-eyedx0.1x0.15x0.2x0.3x0.6x0.8x1x3

Reactoonz 2: Slot Features

In Reactoonz 2 slot free mode, the action is powered by a chain of features built into the base game. Each spin can trigger different interactions, and the order of play is always Fluctometer → Quantummeter → Wild Pair Explosion.

  • Fluctometer: each round, one one-eyed symbol is chosen to fluctuate. If it wins, the removed icons turn into electric wilds and charge the meter. It can hold up to 11 charges, and when full, it adds 1–3 extra Electric Wilds. The fluctometer can recharge within the same round, but is disabled when gargantoon appears.
  • Quantummeter: charges only when electric wilds remove non-wild symbols. It has four levels: 55, 85, 110 and 135 charges. Levels 1–2 release energoon wilds, level 3 releases gargantoon, and level 4 adds a permanent x2 multiplier for that round. The meter resets on every new spin, keeps charging after Energoon, but stops once gargantoon is released.
  • Energoon Wilds: appear if the quantummeter ends at level 1 or 2. Level 1 spawns four 1x1 energoons, and level 2 drops one 2x2 energoon. Both substitute for all symbols.
  • Gargantoon Wilds: unlocked at level 3 or higher. First, a 3x3 Gargantoon lands. After the next cascade, it splits into two 2x2 gargantoons, and then into nine 1x1 gargantoons. At level 4, all wins in that round are doubled with a x2 multiplier.
  • Electric Wilds: appear from the fluctometer, uncharged wilds, or other triggers. They substitute for all symbols and are the only way to charge the quantummeter.
  • Uncharged Wilds: can drop on any cascade. They do not pay themselves but transform into electric wilds if placed next to a winning symbol or when the wild pair explosion activates.
  • Wild Pair Explosion: triggers when at least two electric wilds remain on the grid after all other features. If they are adjacent, all other symbols are cleared except wilds. If they are apart, everything between them and around them is destroyed. Removed symbols don’t pay but do add charges to the quantummeter.

Bonus Choice

Reactoonz 2 does not include a traditional bonus game or Free Spins. Instead, all special events happen inside the base play, where Fluctometer, Quantummeter and different Wild types keep the action moving. The lack of a separate bonus round is balanced by the variety of features built into every spin.

Summary

The Reactoonz 2 free play mode lets players see how the slot builds tension through its meters and evolving wilds. The absence of a dedicated feature round may be disappointing for some, yet the base play carries enough mechanics to keep each spin engaging.

The relatively low RTP contrasts with industry standards, and the high volatility means long stretches can pass without much return. However, once a chain of cascades begins to connect, the mix of Electric, Energoon and Gargantoon Wilds can completely transform the grid in just a few moves.

This makes the slot a good fit for players who enjoy layered systems and sharp momentum shifts. Those looking for something simpler may prefer Sugar Rush, while anyone drawn to a darker twist could try Mental from Nolimit City.

Paul Hutchings | Author
Paul Hutchings
4 January 2026, 19:17
Reactoonz 2
Provider
Play’n GO
Theme
Creatures
Reels × Rows
7x7
Bet Range (£)
0.2 - 5
Free spins
Progressive Jackpot
Mobile friendly
Release year
2020