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 grid, has a maximum win of 4,000x and launched in 2022.



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.
The Gigantoonz is available at some of the top online casinos in the UK right now. Here are the best slot sites hosting the game:



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
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.



There are several special features that can trigger when playing Gigantoonz. Here are summaries of them.

Each Gigantoonz can appear as a Mega symbol 2x2, 3x3, 4x4, 5x5, 6x6 or 7x7 in size. A Mega symbol counts as one symbol only, but has a random cluster value of up to 13. This cluster value determines how much it pays when you win with it.
On any non-winning spin, five to 10 wild symbols may appear. These land on random positions on the grid.
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 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
These are some common questions about Gigantoonz.