Double Stacks Demo Slot by Netent Free Play

Double Stacks is an online Slot from Netent.

Quick Facts

- Layout: 5 reels x 3 rows

- Paylines: 10 fixed

- Key mechanics: Double Stacks feature, Free Spins with stacked Wilds

- Special symbols: Wild, Scatter, Diamond, Red Seven, Bar, Bell

How the Game Plays

Double Stacks is a vibrant, neon-lit tribute to classic fruit machines. Developed by Netent, it uses a traditional 5x3 grid with 10 fixed paylines. The reels are filled with high-definition versions of nostalgic symbols like cherries, watermelons, and lemons, along with higher-value icons like diamonds and bells. Winning combinations are formed by landing matching symbols from left to right, but the game's unique twist comes from how these symbols interact with the stacks.

Double Stacks Feature Explained

The standout mechanic is the Double Stacks feature, which applies to the four highest-paying symbols: Diamonds, Red Sevens, Bars, and Bells. When a reel is entirely filled with a stack of one of these symbols, they all double in size. Each symbol on that reel then counts as two symbols instead of one for win calculations. This allows for up to 10-of-a-kind combinations on a single payline, significantly boosting the payout potential compared to standard 5-of-a-kind wins.

Free Spins Explained

The Free Spins round is triggered by landing three or more Scatter symbols anywhere on the reels. Depending on the number of Scatters, you receive 5, 15, or 30 spins. During this bonus, Wild symbols are added to the reels and can also appear in stacks. Because high-value symbols remain stacked during the feature, there is a much higher frequency of triggering the doubling mechanic, especially with Wilds helping to complete those 10-symbol lines. Extra spins can be won by landing just two or more Scatters during the round.

Click the Play for Free button to load the Double Stacks demo, test its features and payouts and decide if it is a game you enjoy.