
Free demo & player guide
Gigantoonz

No sign-up · no deposit · full screen available
Free slot demo · player guide
Gigantoonz
The Reactoonz are bigger than ever!
18+ · free play · no account or deposit
Game details checked 2 Oct 2026How we check games

60-second guide
What matters at a glance
Free play
Play Gigantoonz here
Open the game above to check its pace, controls and features. Free play stays on SlotsCollector.
Look for
Features worth trying
- Bonus Game
Bonus Game
- Cascading Wins
Cascading Wins
- Free Spins
Free Spins
Game overview
What is Gigantoonz?
One of our favourite series, the Reactoonz series just keeps growing! The charger features an animated Gargantoon integrated and applies different features to the Mega symbols for ultimate entertainment throughout gameplay. When forming wins, a Mega Symbol counts as a single symbol but its has a higher cluster value. If a Mega symbol won’t fit, it splits in the value to create single symbols that will fill the empty spaces. Need a little energy boost? On non-winning rounds five to 10 Quantum Wilds may be added randomly to the grid. But Gagantoonz Wilds will only appear when he’s awoken by the Quantumeter. The Quantumeter has four charge levels, when there are no more cascades the next charge feature in line triggers. DISINTERGRATIONS Collect 25 charges to start the energy boost and remove all instances of four randomly selected symbols, METAMORPHOSIS Collect 50 to trigger this stage where randomly selected symbols will be randomly transformed into a different symbol including Mega symbols! RADIATION Another 25 to make 75 charges in total and adds up to four Mega symbols and two to five Quantum Wilds randomly. GARGANTOONZ Finally, 100 charges to awaken Gargantoonz from his slumber! All Mega symbols will be transformed into Mega Gargantoonz, at least three Mega Gargantoonz will appear regardless of what is on the grid. Then a Mega Gargantoonz will split into a 1x1 Gargantoonz which are removed as usual. This is another piece to the Reactoonz puzzle and we’re far from finished...
How it plays
The features that shape the game
The Reactoonz are bigger than ever!
Bonus Game
Bonus Game
Cascading Wins
Cascading Wins
Free Spins
Free Spins
Scatter Symbols
Scatter Symbols
Wild Symbols
Wild Symbols
Before you play
Does Gigantoonz match what you want?
Judge the format and features first. Theme alone tells you very little about how a game feels.
What this game offers
- Grid Slot format from Play’n GO
- VERY HIGH volatility
- Bonus Game
- Cascading Wins
- Free Spins
What to check first
- This page lists RTP at 96.25%; confirm it in the version you open.
- Casino stake limits and feature settings may differ from the free-play version.
- Free play shows the mechanics, but it cannot predict a future result.
Quick answers
Gigantoonz FAQ
Clear answers based on the game information and demo status available today.
Can I play Gigantoonz for free?
Yes. Select “Play free demo” to open Gigantoonz on this page without an account or deposit.
What type of game is Gigantoonz?
Gigantoonz is listed as a Grid Slot from Play’n GO. The Reactoonz are bigger than ever!
What is the RTP of Gigantoonz?
The RTP shown for Gigantoonz is 96.25%. A casino may offer a different configuration, so confirm the value in the in-game information screen.
Can I play for real money here?
No. SlotsCollector provides game information and free demos only; it does not accept bets or deposits.
Game facts
Gigantoonz numbers and features
These are the details currently confirmed for this game. Check the in-game information before using real money.
Payouts & risk
- RTP
- 96.25%
- Volatility
- VERY HIGH
- Maximum win
- 4,000×
- Bet range
- 0.2 – 100
Reels & wins
- Reel layout
- Grid Slot - 8×8 Grid
- Paylines
- 1
Release & devices
- Release date
- 27 Jan 2022
- Platforms
- Desktop, Mobile
- Theme
- Creatures, Sci Fi
Check real-money availability
This game may be available to play for real money at our partner sites. Availability varies by location.
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