Sunny Stacks

Sunny Stacks is a cluster-pays slot game developed by SkyWind. The game is played on a 5×6 grid with a unique 2×2 top symbol positioned above reels 3 and 4. Wins are awarded for clusters of 9 or more adjacent matching symbols, which must be connected horizontally or vertically.

The game features a Sunny Respin mechanic. When the top symbol is involved in a winning cluster, it triggers a respin where winning symbols are locked in place. This process continues until there are no more upgrades to the winning cluster including the top symbol, or the reels are fully covered by locked symbols.

The Sunny Free Games feature is activated by landing 3 or more scatter symbols, awarding 8 to 14 free games depending on the number of scatters. During free games, the top symbol always acts as a Wild. The Sunny Respin mechanic is active during free games, with an added multiplier that can increase up to x50.

A unique “Play it Your Way” gamble feature allows players to potentially increase their free games up to 25 and the initial multiplier up to x5 before the feature begins. The game also offers a Buy-in Feature, allowing players to directly purchase the Free Games feature for 75 times their base bet.