Gigantoonz Slot Review

⭐ 7/10
Create by: Play’n GO
Review by:
Posts by Michael White
Updated: December 1, 2025

Gigantoonz is a High volatile slot from Play’n GO with an RTP 96.25% and up to x4000 maximum win. Play demo for free.

Gigantoonz Slot Demo

Software
Release Date
2022-01-27
RTP
96.25%
Max Win
x4000
Volatility
High
Bet Range ($,€,£)
0.20 - 100
Number of Reels
8
Features
Cluster Pays, Collect Symbols, Colossal Symbols, Mega Symbols, Monsters, Multiplier, Random Wilds, Symbol Swap

Gigantoonz Slot Theme And Storyline

As soon as I opened Gigantoonz, I felt right back in the Reactoonz universe, only larger and louder. The 8x8 grid hangs in front of a deep space backdrop with a swirling purple singularity behind the reels, while Gargantoon snoozes beside the Quantumeter waiting to wake up. The cartoon aliens bounce and blink with every cascade, so long sessions never feel flat or lifeless.

Gigantoonz slot screenshot

Gigantoonz Rules And Gameplay

Gigantoonz uses an 8x8 grid and a cluster pays engine, so there are no paylines in the traditional sense. I can bet from 20 pence up to 100 pounds per paid drop, which suits both cautious play and more aggressive sessions. Wins land when at least six matching symbols connect horizontally or vertically, and the slot then triggers cascading wins that keep the same stake rolling.

When a cluster hits, all symbols in that group explode and fresh ones fall from above, giving a chance to chain several results off a single spin. Each winning symbol adds one charge to the Quantumeter, while any mega symbol adds its assigned cluster value instead. During a long streak I can see the meter race upwards, which is where the game really starts to feel dangerous and exciting.

Because the volatility is rated 10 out of 10, I treat Gigantoonz as a session slot rather than a quick flutter. Dry spells happen, yet the game area is large enough that one charged sequence can wipe out earlier losses and leave a hefty profit. The lack of a classic free spins round never bothers me, since the whole experience already feels like a rolling feature game.

Gigantoonz Symbols And Paytable

The paytable sticks to the familiar one eyed and two eyed Reactoonz. Five small one eyed creatures in yellow, green, brown, purple and turquoise form the low tier, paying around 5x to 20x the bet for a cluster of thirty or more. The bigger two eyed aliens in blue, orange, harlequin, magenta and red sit at the top, reaching 50x up to a chunky 1,250x for max size groups.

There are no scatters here, only two wild symbols that keep the grid alive. Quantum Wilds look like glowing energy orbs, and Gargantoon Wilds are the giant three eyed boss. Both substitute for regular symbols to build clusters, though they do not carry their own line wins. Because the pays scale across many cluster sizes, even medium hits can climb fast once a screen fills with similar aliens.

Symbols and Paytable

Symbol Quantity Payout
icon 1 30+ x1250
25+ x200
21+ x100
17+ x50
14+ x20
12+ x20
10+ x10
8+ x5
7 x2
6 x1
icon 2 30+ x400
25+ x125
21+ x50
17+ x20
14+ x10
12+ x5
10+ x3
8+ x2
7 x1
6 x0.5
icon 3 30+ x200
25+ x75
21+ x25
17+ x12.5
14+ x5
12+ x3
10+ x1
8+ x0.8
7 x0.5
6 x0.4
icon 4 30+ x100
25+ x40
21+ x20
17+ x7.5
14+ x2.5
12+ x2
10+ x0.8
8+ x0.6
7 x0.5
6 x0.4
icon 5 30+ x50
25+ x30
21+ x12.5
17+ x5
14+ x2
12+ x1.5
10+ x0.7
8+ x0.5
7 x0.3
6 x0.2
icon 6 30+ x20
25+ x10
21+ x5
17+ x3
14+ x1.5
12+ x1
10+ x0.7
8+ x0.5
7 x0.3
6 x0.3
icon 7 30+ x10
25+ x4
21+ x2
17+ x1
14+ x0.8
12+ x0.6
10+ x0.5
8+ x0.3
7 x0.2
6 x0.2
icon 8 30+ x10
25+ x4
21+ x2
17+ x1
14+ x0.8
12+ x0.6
10+ x0.5
8+ x0.3
7 x0.2
6 x0.2
icon 9 30+ x5
25+ x3
21+ x1
17+ x0.8
14+ x0.6
12+ x0.5
10+ x0.4
8+ x0.2
7 x0.1
6 x0.1
icon 10 30+ x5
25+ x3
21+ x1
17+ x0.8
14+ x0.6
12+ x0.5
10+ x0.4
8+ x0.2
7 x0.1
6 x0.1
icon 11 Wild

Gigantoonz Bonuses And Special Features

Mega symbols are what set Gigantoonz apart. They can land in blocks from 2x2 up to a huge 7x7, yet they always count as a single position when forming clusters. Each one receives a random cluster value up to thirteen that feeds the Quantumeter, and whenever a mega block wins it leaves behind a standard wild. If it cannot drop further, it breaks into 1x1 copies to plug the gaps.

On dead spins I often see between five and ten Quantum Wilds thrown across the grid, which can rescue a round that felt finished. Every winning symbol charges the Quantumeter, and hitting 25, 50, 75 and 100 charges triggers Disintegration, Metamorphosis, Radiation and finally Gargantoonz. Those modifiers remove symbol sets, morph others, add more mega blocks and wilds, then flood the board with Mega Gargantoonz in a two step burst.

Gigantoonz RTP, Volatility, And Max Win

From a numbers point of view, Gigantoonz runs on a default RTP of 96.25 percent, although some operators can lower it as far as 84.25 percent, so I always check the info screen first. Volatility is extreme, rated ten out of ten, and the advertised maximum win is 4,000 times the bet, with the top hit frequency quoted around once every few million spins in long term simulations.

Gigantoonz slot screenshot

Gigantoonz Review Summary

For me, Gigantoonz feels like a cleaner take on the Reactoonz idea rather than a wild experiment. The big grid, frequent mega symbols and straight Quantumeter progression make it easier to follow than some earlier outings, yet it still has that manic, snowball style gameplay. Instead of chasing free spins, I focus on building clusters, feeding the meter and hoping for one of those explosive Gargantoonz finishes.

If you like high variance grid slots, Gigantoonz is worth sitting with for a serious session, though casual players may find the swings uncomfortable. The combination of Quantum Wilds, mega blocks and the four Quantumeter modifiers can line up into chains that pay hundreds of times the stake, yet plenty of rounds drift by with small clusters. I treat it with respect, but I keep coming back.

Screenshots

Gigantoonz slot screenshot 1
Gigantoonz slot screenshot 2
Gigantoonz slot screenshot 3
Gigantoonz slot screenshot 4
Gigantoonz slot screenshot 5
Gigantoonz Final Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (96.25%)








Max Win (x4000)








Originality








FAQs About Gigantoonz

Can I play Gigantoonz free slot?

Absolutely! You can enjoy Gigantoonz for free on our website without registration. Our partner casinos of Play’n GO also usually offer demo mode access.

Can I win real money on Gigantoonz slot?

Yes, to win real money in Gigantoonz, you'll need to create an account at a licensed casino site. You can then play for real and win up to x4000.

Can I play Gigantoonz slot on mobile phone?

Yes, Gigantoonz is fully optimized for mobile devices and runs smoothly on any devices.

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