While Double Stacks may have firm roots in the old style of fruit machines, this is definitely one slot that you wouldn’t find in a local pub. That’s mainly due to the bright neon visuals that would no doubt deter the regulars. However, for slot players, the lights are alluring and inject the game with that extra wow factor. Or the X Factor, if you will. The main symbols include Plums, Lemons, Cherries, Watermelons, Bells, Lucky Sevens, Bars and Diamonds. They all flash in front of the screen when they form part of a winning combination, but the real magic is when the Disco Ball Scatter appears. The music changes and we can get our funk on as we enter the bonus rounds.

The stacked symbols are the key focus of this slot. Symbols that match can duplicate, activating the Double Stacks feature which allows for more combinations to be made and more wins to be won. This makes the gameplay faster and frenetic as we see fruity symbols splat up on screen before transforming into a sticky stacked symbol. All the action takes place bathed in glorious neon colours with a soundtrack that George Clinton would be proud of.


When stacked symbols land on a reel, the Double Stacks feature activates. All the symbols on the reel then double up, giving us more winning combinations. If the reels fill with the highest paying symbol, the Diamonds, they double up and can reward us with 1,000 times our stake. We trigger the Free Spins feature when the Disco Ball Scatter appears three, four or five times anywhere on the reels. Our reward is 5, 15 or 30 free spins. During these spins, we can use the Double Stacks feature as well as re-trigger the spins by landing two to five additional Scatters. Throw the Diamonds into the equation and there’s never been a jackpot so juicy.


Not everybody loves fruit, we get that. But when we can get a healthy dose of fruit that gives us more than just a vitamin boost, we’re naturally intrigued. Double Stacks definitely fills our fruity needs with its retro graphics, and then gives our balance a nice healthy check with the Double Stacks and Free Spins features. As the Double Stacks mechanism runs throughout the base game and the free spins, it really is the fruity gift that keeps on giving.

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The King

"The King" is a collective pseudonym representing the work of various former contributors to our site, who have since moved on but left behind a legacy of well-crafted online casino reviews. Our dedicated team of current writers has thoroughly fact-checked and verified the content to maintain its accuracy and relevance. While we gradually replace these reviews, we acknowledge and appreciate the valuable insights shared by "The King" and strive to uphold their high standards for our readers.

Reviewer since November, 2014

Double Stacks Slot Details

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