Double Stacks Online Slot

Date Updated:9 Sep 2019 Written by Jerico

Double Stacks is an exciting a 5 by 3 classic slot game that is not only full of radiant color, but also features a Double Stacks feature, and Free Spins where the reels are packed to the brim with stacked Wilds. And speaking of excitement, Double Stacks delivers 1000x potential max win per single spin!

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Progressive Jackpot: No

Software: Net Entertainment

Paylines: 10

Reels: 5

RTP: 96.10%

When it comes to online slots, sparkling gems and fruits are classic elements that are used often. Net Entertainment is a master of this and goes to the very same well once again with Double Stacks — a five-reel slot with three rows and ten fixed paylines.

As the title suggests, Double Stacks features double symbols and some tasty jackpot prizes, which you can try to win with a gentle tune accompanying your gameplay while a dim red background pulsates behind the transparent reels.

Aesthetically, this is a striking online slot that often reminded me of Starburst and Twin Spin. The soundtrack, however, is arguably its most fabulous feature! It was actually one of the very first things I took note of when starting the game up. I realize that music might be a question of preference but in my opinion, this 80s-inspired soundtrack is just outstanding.

Now, there are a lot of good things to speak of as far as Double Stacks is concerned. As already mentioned: the visuals are fantastic, the soundtrack is one of the best that I have heard in a long time, and the playability is smooth and seamless.

At first, I assumed the 1000x potential was the absolute max win in the bonus, but apparently, it’s the max win per single spin, which means this game actually boasts of decent potential. This might be one of the best slots released by Net Entertainment in a long while and with 15 to 30 free spins, along with a re-trigger, it could even turn out to be one of the best ever.


There are eight regular symbols in the game: four low-value symbols marked by watermelons, lemons, plums and cherries, and four premium symbols made out of bells, bars, sevens, and diamonds.

The diamond is of the highest value, worth 4-5 times the stake for five across a full payline. All premium symbols appear stacked on the reels, and the main objective of the game is to try and land a full screen of diamonds which triggers the max win of 1000x. The max win in relation to the existing bet size is seen on top of the reel set for each of the high-value symbols.

Aside from the regular symbols, you’ll also find a standard Scatter symbol and a Wild which, when compared to the regular symbols, do not appear stacked in the main game.


Double Stacks

Filling every position on a specific reel is the way to land double symbols, which will then count as two when any payouts are evaluated. If you manage to fill all five reels with corresponding double symbols, you’ll win the equivalent value shown above the reels.

Free Spins

The Free Spins is initiated by landing three, four or five of the scatter symbols anywhere for which you will receive five, 15 or 30 free spins, respectively. During this round, the wild symbol can appear stacked in addition to the diamonds, sevens, bars, and bells to help you come away with bigger wins. Landing two, three, four or five scatters during this round will award two, five, 15 or 30 extra spins.