The Gargantoon is the ultimate feature in Reactoonz and is triggered after you've charged the Quantum Meter five times. When the Gargantoon appears, it starts as a 3x3 Wild symbol that can cover a large portion of the grid. After the initial drop, the Gargantoon splits into two 2x2 Wilds, and then into nine individual 1x1 Wilds. This feature can lead to massive payouts, especially if you're lucky enough to create multiple winning clusters during the Gargantoon's rampage.