Free spins and sticky multipliers form the central attraction and the highest risk area of the game. Here is how it works: when a winning cluster explodes, the grid positions get marked. A second win on a marked position adds a x2 multiplier, which doubles upon subsequent wins up to a strict limit of x1,024. During the base game, these spots reset after each spin.
However, if three or more scatter symbols activate the free spins feature, the marked spots and their multipliers become "sticky" and persist until the entire bonus round concludes. Multipliers overlapping the same winning cluster multiply each other, which is how payouts can accelerate dramatically.
The base game hit rate sits at roughly 34.48%, meaning approximately one winning cluster every three spins. The grid produces frequent small wins, but meaningful payouts require chain-reaction tumbles that build multiplier positions. Small wins, in other words, are common. Big ones are not.