Play’n GO · Slot Review

Reactoonz 2 — Full Review & Free Demo

Name: Reactoonz 2
Availability: InStock
Author: Play’n GO

3.6/5

Reviewed by Ryan Cole · April 2026 · Verified ✓

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RTP

96.20%

Volatility

High

Max Win

5,083x

Provider

Play’n GO

Reels

Bet Range ($,€,£)

0.20 - 100

Rating

3.6/5

Released

Oct 2020

Reactoonz 2 Overview

Reactoonz 2 is the sequel to one of Play'n GO's most popular grid slots, and honestly, I can see why people were buzzing about it. Same 7x7 grid, same lovable googly-eyed alien critters, but with a few extra tricks thrown in. Released back in October 2020, it uses Cluster Pays instead of paylines, so you need clusters of five or more matching symbols to score a win.

What makes this one different from the original is the dual meter system. You've got the Fluctometer and the Quantumeter working together, plus four types of wilds instead of the old random features. It feels like Play'n GO took everything from the first game and gave it a proper polish. My first impression? Familiar enough to feel comfortable, but different enough to keep me interested.

Symbols and Paytable

Eight alien creatures make up the regular paytable, split into one-eyed low payers and two-eyed high payers. Clusters of 15 or more matching symbols are where the real money sits, ranging from 3x to 500x your stake. The pink alien is the top payer at 500x for a full cluster. Decent numbers, though individual symbol payouts aren't massive on their own.

Four wild types add the real spice here. Uncharged Wilds appear after cascades but sit dormant until a win happens next to them, then they transform into Electric Wilds. Electric Wilds substitute for everything and zap surrounding symbols off the grid. Energoon Wilds come from the Quantumeter at lower levels, while the mighty Gargantoon Wild is the big prize; a 3x3 beast that splits into smaller wilds through cascades.

Symbol Payouts

15+	x500
12+	x50
10+	x20
9	x8
8	x5
7	x3
6	x2
5	x1

15+	x200
12+	x20
10+	x10
9	x4
8	x3
7	x2
6	x1
5	x0.8

15+	x100
12+	x10
10+	x5
9	x3
8	x2
7	x1
6	x0.8
5	x0.6

15+	x60
12+	x6
10+	x3
9	x2
8	x1.5
7	x1
6	x0.7
5	x0.5

15+	x10
12+	x3
10+	x1
9	x0.8
8	x0.6
7	x0.4
6	x0.2
5	x0.15

15+	x10
12+	x3
10+	x1
9	x0.8
8	x0.6
7	x0.4
6	x0.2
5	x0.15

15+	x3
12+	x1
10+	x0.8
9	x0.6
8	x0.3
7	x0.2
6	x0.15
5	x0.1

15+	x3
12+	x1
10+	x0.8
9	x0.6
8	x0.3
7	x0.2
6	x0.15
5	x0.1

Wild

Bonus Features and Meters

Everything revolves around Cascading Wins. Land a cluster, winning symbols disappear, new ones drop in. Simple enough. But each cascade feeds into the two meters on the right side of the screen, and that's where things get properly exciting.

The Fluctometer picks a random one-eyed symbol each spin. Win with that symbol and the meter charges up. Fill it completely and you get 1 to 3 Electric Wilds dropped onto the grid. Those Electric Wilds then do the heavy lifting for the Quantumeter, because every non-wild symbol they zap counts as a charge. Collect 55 charges for four small Energoon Wilds, 85 for a 2x2 Energoon, 110 for the massive 3x3 Gargantoon, and 135 to add a 2x multiplier on top of everything. The Gargantoon then splits into two 2x2 wilds after a cascade, which break into nine 1x1 wilds. Proper chain reaction stuff.

There's also the Wild Pair Explosion. If two or more Electric Wilds remain after all features resolve, symbols between or around them get destroyed. Doesn't pay out directly, but it charges the Quantumeter further. I'll be honest, the rules read like a science textbook. My advice? Just spin the demo for ten minutes and it clicks much faster than reading about it.

Bonus Buy Options

Fluctometer

A random one-eyed symbol is chosen to fluctuate each round. Wins with that symbol charge the meter, and a full charge awards 1 to 3 Electric Wilds on the grid.

Quantumeter

Non-wild symbols removed by Electric Wilds charge this four-level meter. Level 1 (55 charges) gives four 1x1 Energoon Wilds, Level 2 (85) a 2x2 Energoon, Level 3 (110) a 3x3 Gargantoon, and Level 4 (135) adds a 2x multiplier.

Wild Pair Explosion

Triggers when 2 or more Electric Wilds remain after all features resolve. Adjacent wilds destroy all non-wild symbols; non-adjacent wilds destroy symbols between them. Removed symbols charge the Quantumeter but do not pay directly.

Gargantoon

A 3x3 Gargantoon Wild splits into two 2x2 Gargantoons after a cascade, which then break into nine 1x1 Gargantoons after another cascade, creating a chain of wins.

RTP, Volatility, and Max Win

RTP sits at 96.2% on the default setting, which is fair. Watch out though; some casinos run a lower 94.2% version thanks to RTP ranges, so always check before playing with real cash. Volatility is high at 8 out of 10, meaning your balance can swing about a lot between those bigger hits.

Max win is 5,083x your stake. Not the biggest you'll ever see, but Play'n GO actually bumped this up from an originally planned 3,000x after player feedback. No separate free spins round exists here; everything happens in the base game through the meter system. That means you're always just one good cascade chain away from a proper result.

In-Game Screenshots

💬 What Players Say

Fans of the original generally enjoy the sequel's extra meters and wild types, though some feel it's too similar to justify being called a new game. Based on 5 reviews.

Ryan Cole’s Verdict

Final Verdict

Reactoonz 2 is a proper sequel. Not a massive reinvention, but enough tweaks to feel fresh if you enjoyed the original. The dual meter system gives every spin a sense of building towards something, and when the Gargantoon finally drops and starts splitting, it genuinely gets your pulse going. The cascading wins keep things moving at a nice pace too.

My gripe? The features can feel a bit overwhelming at first, and the high volatility means you'll have stretches where not much happens. Not everyone will enjoy watching their balance dip while waiting for the meters to charge. But for a casual session where you fancy something with a bit of depth, it's a solid pick. Give the demo a go first; five minutes in and you'll know if it's your kind of slot.

3.6

★★★★☆

out of 5

✓ Pros

✅ Four different wild types keep things interesting

✅ Dual meter system builds proper excitement

✅ Gargantoon splitting mechanic creates big chain wins

✅ Solid max win of 5,083x the stake

✅ Cascading reels keep combos rolling

✗ Cons

✅ High volatility can drain your balance quickly

✅ No traditional free spins round

✅ Features take a while to fully understand

✅ RTP can be lower at some casinos

Reactoonz 2 FAQ

How does the Gargantoon Wild actually work in Reactoonz 2? ▼

When the Quantumeter reaches level 3 at 110 charges, a 3x3 Gargantoon Wild lands on the grid. After it triggers a cascade, it splits into two 2x2 Gargantoon Wilds. Those then break into nine 1x1 Gargantoons after another cascade, creating a long chain of wins.

What is the difference between the Fluctometer and the Quantumeter? ▼

The Fluctometer charges when you win with the randomly chosen fluctuating symbol each spin, and rewards you with Electric Wilds. The Quantumeter charges when Electric Wilds zap non-wild symbols off the grid, and it releases increasingly powerful Energoon and Gargantoon Wilds across four levels.

Does Reactoonz 2 have free spins? ▼

No, there is no traditional free spins round. All features happen in the base game through the cascading wins and dual meter system. The Quantumeter and Gargantoon mechanic effectively replace what free spins would normally do.

What changed from the original Reactoonz to Reactoonz 2? ▼

The sequel adds the dual meter system with Fluctometer and Quantumeter instead of the original's random modifier features. Four wild types replaced the old setup, and the max win increased from around 4,570x to 5,083x. The volatility and general feel remain similar.

Can the Fluctometer charge more than once in a single spin? ▼

Yes, the Fluctometer can recharge multiple times during the same spin as long as cascades keep producing wins with the fluctuating symbol. However, it becomes disabled once a Gargantoon Wild is released from the Quantumeter.