Gigantoonz
Gigantoonz is one of many online slots in Play’n GO’s popular Reactoonz series. In our Gigantoonz review, we will let you know all about the slot’s features and payouts, so you can decide whether it is right for you. The slot uses an extra-large 8x8...
Reviewed by A. Lynch
·
Updated: 2026-04-15
| Provider | Play'n GO |
| RTP | 94.25% (varies) |
| Reels | 8 × 8 |
| Paylines | Cluster Pays |
| Max Win | Up to 4,000x |
| Bet Range | £0.2 – £5 |
| Themes | space |
| Released | 2022-01-27 |
| Technology | HTML5 |
| Updated | 2026-04-15 |
- RTP: 94.25% (varies)
- Max Win: Up to 4,000x
- Provider: Play'n GO
- Reels: 8 × 8
- Best Casino: SpinGenie (9.30/10)
Where to Play Gigantoonz
Gigantoonz RTP and Wagering
Gigantoonz uses an 8x8 grid and has the cluster pays mechanic in place. To win, six or more identical symbols have to land in a cluster. Symbols only count as being in a cluster when they are touching horizontally or vertically. The bigger the cluster, the bigger the payout.
Whenever you win, a cascade takes place. First, all of the winning symbols disappear from the grid. What happens next is that symbols fall and new ones drop down from above so that there are no empty positions. This can create new clusters; if it does, another cascade takes place.
When playing Gigantoonz, you can bet with various amounts ranging from £0.20 up to £5. The slot’s RTP is 94.25%, which is somewhat below average when you compare it to other slot games. Most online slots have a payout rate of around 96%. The most you can win when playing the Gigantoonz slot is 4,000x your bet.
Gigantoonz Symbols and Audio & Video Design
Gigantoonz has an outer space theme and focuses on Reactoonz, the alien-like creations of Dr Toonz. They have become bigger and now go by the name of Gigantoonz. The slot has an impressive sci-fi vibe complete with high-quality visuals and animations. The soundtrack is minimal yet it blends in with the theme well. The nine paying symbols are various Gigantoonz, and their payouts are below.
Small Yellow Gigantoon
6 —0.1x bet / 7 — 0.1x bet / 8-9 — 0.2x bet / 10-11 — 0.4x bet / 12 / 13 — 0.5x bet / 14-16 — 0.6x bet / 17-20 — 0.8x bet / 21-24 — 1x bet / 25-29 — 3x bet / 30+ — 5x bet
Small Green Gigantoon
6 —0.1x bet / 7 — 0.1x bet / 8-9 — 0.2x bet / 10-11 — 0.4x bet / 12 / 13 — 0.5x bet / 14-16 — 0.6x bet / 17-20 — 0.8x bet / 21-24 — 1x bet / 25-29 — 3x bet / 30+ — 5x bet
Small Red Gigantoon
6 —0.2x bet / 7 — 0.2x bet / 8-9 — 0.3x bet / 10-11 — 0.5x bet / 12 / 13 — 0.6x bet / 14-16 — 0.8x bet / 17-20 — 1x bet / 21-24 — 2x bet / 25-29 — 4x bet / 30+ — 10x bet
Small Purple Gigantoon
6 —0.2x bet / 7 — 0.2x bet / 8-9 — 0.3x bet / 10-11 — 0.5x bet / 12 / 13 — 0.6x bet / 14-16 — 0.8x bet / 17-20 — 1x bet / 21-24 — 2x bet / 25-29 — 4x bet / 30+ — 10x bet
Small Blue Gigantoon
6 —0.3x bet / 7 — 0.3x bet / 8-9 — 0.5x bet / 10-11 — 0.7x bet / 12 / 13 — 1x bet / 14-16 — 1.5x bet / 17-20 — 3x bet / 21-24 — 5x bet / 25-29 — 10x bet / 30+ — 20x bet
Large Blue Gigantoon
6 —0.3x bet / 7 — 0.3x bet / 8-9 — 0.5x bet / 10-11 — 0.7x bet / 12 / 13 — 1.5x bet / 14-16 — 2x bet / 17-20 — 5x bet / 21-24 — 12.5x bet / 25-29 — 30x bet / 30+ — 50x bet
Large Orange Gigantoon
6 —0.4x bet / 7 — 0.5x bet / 8-9 — 0.6x bet / 10-11 — 0.8x bet / 12 / 13 — 2x bet / 14-16 — 2.5x bet / 17-20 — 7.5x bet / 21-24 — 20x bet / 25-29 — 40x bet / 30+ — 100x bet
Large Green Gigantoon
6 —0.4x bet / 7 — 0.5x bet / 8-9 — 0.8x bet / 10-11 — 1x bet / 12 / 13 — 3x bet / 14-16 — 5x bet / 17-20 — 12.5x bet / 21-24 — 25x bet / 25-29 — 75x bet / 30+ — 200x bet
Large Pink Gigantoon
6 —0.5x bet / 7 — 1x bet / 8-9 — 2x bet / 10-11 — 3x bet / 12-13 — 5x bet / 14-16 — 10x bet / 17-20 — 20x bet / 21-24 — 50x bet / 25-29 — 125x bet / 30+ — 400x bet
Large Red Gigantoon
6 —1x bet / 7 — 2x bet / 8-9 — 5x bet / 10-11 — 10x bet / 12-13 — 20x bet / 14-16 — 20x bet / 17-20 — 50x bet / 21-24 — 100x bet / 25-29 — 200x bet / 30+ — 1,250x bet
Gigantoonz Mobile Features
Play’n GO has made Gigantoonz playable on mobile devices. Whether you access the slot through a smartphone or tablet, you should have no issues with playing it. Gigantoonz looks just as impressive on mobiles as it does on computers. Its performance should also be the same across different device types.
Gigantoonz Bonus Features
There are several special features that can trigger when playing Gigantoonz. Here are summaries of them.
Quantumeter
The Quantumeter fills with 1 unit of charge for every winning symbol (Mega symbols use their cluster value). It has four features that activate at 25, 50, 75 and 100 charges. These are:
Disintegration: Chooses four random symbols and removes all instances of them.
Metamorphosis: Chooses one symbol and turns all instances of it into another symbol.
Radiation: Adds up to four Mega symbols and two to four wilds.
Gargantoonz: All Mega symbols become wild and extra wilds appear
Gigantoonz Final Thoughts
Gigantoonz is a great addition to the Reactoonz series as it builds on the earlier slots and offers a fun, thrilling slot experience. Its RTP (94.25%) and maximum payout (4,000x) could be higher, but the slot is still well worth playing thanks to its theming and features. Spin the reels to land Mega symbols, trigger cascades and unlock up to four Quantumeter effects. Whether you are familiar with Reactoonz or not, you are sure to enjoy playing the Gigantoonz slot.
Rating: 8.0